{"id":1052,"date":"2025-02-08T17:59:19","date_gmt":"2025-02-08T08:59:19","guid":{"rendered":"https:\/\/emeth.jp\/diary\/?p=1052"},"modified":"2025-02-08T18:44:03","modified_gmt":"2025-02-08T09:44:03","slug":"modctf-2025-writeup","status":"publish","type":"post","link":"https:\/\/emeth.jp\/diary\/2025\/02\/modctf-2025-writeup\/","title":{"rendered":"\u9632\u885b\u7701\u30b5\u30a4\u30d0\u30fc\u30b3\u30f3\u30c6\u30b9\u30c8 2025 writeup"},"content":{"rendered":"\n<p>\u5168\u5b8c\u3057\u30667\u4f4d\u30021\u4f4d\u306est98\u6c0f\u306f\u5348\u524d\u4e2d\u306b\u7d42\u3048\u308b\u3068\u3044\u3046\u9a5a\u7570\u7684\u306a\u30b9\u30d4\u30fc\u30c9\u3002\u3059\u3052\u3048\u3088\u3002<\/p>\n\n\n\n<p>\u5168\u4f53\u7684\u306b\u96e3\u6613\u5ea6\u306f\u4f4e\u3081\u3067\u521d\uff5e\u4e2d\u7d1a\u8005\u5411\u3051\u3060\u3063\u305f\u3002\u524d\u56de\u3088\u308a\u3082\u7c21\u5358\u306b\u611f\u3058\u305f\u3002<\/p>\n\n\n\n<p>\u3044\u3064\u3082\u901a\u308awriteup\u3092\u66f8\u3044\u3066\u3044\u304f\u3002\u3067\u304d\u308b\u3060\u3051\u521d\u5b66\u8005\u306b\u3082\u89e3\u304f\u624b\u9806\u304c\u308f\u304b\u308b\u3088\u3046\u306b\u66f8\u3044\u3066\u3044\u308b\u3064\u3082\u308a\u3002\u308f\u304b\u3089\u306a\u3044\u70b9\u304c\u3042\u3063\u305f\u3089\u7b54\u3048\u308b\u306e\u3067\u4f55\u3089\u304b\u306e\u5f62\u3067\u805e\u3044\u3066\u307b\u3057\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/Top-10-Users1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"316\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/Top-10-Users1-1024x316.png\" alt=\"\" class=\"wp-image-1151\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/Top-10-Users1-1024x316.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/Top-10-Users1-300x93.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/Top-10-Users1-768x237.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/Top-10-Users1-624x193.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/Top-10-Users1.png 1296w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">PG\u30ab\u30c6\u30b4\u30ea\uff08\u30d7\u30ed\u30b0\u30e9\u30df\u30f3\u30b0\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7e2e\u3081\u308b\u3060\u3051\u3058\u3083\u30c0\u30e1 [100pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u306eExcel\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30d5\u30e9\u30b0\u3092\u8aad\u307f\u53d6\u3063\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u30de\u30af\u30ed\u4ed8\u304d\u306eExcel\u30d5\u30a1\u30a4\u30eb\u304c\u4e0e\u3048\u3089\u308c\u308b\u306e\u3067\u958b\u3044\u3066\u8868\u793a\u3092\u8abf\u6574\u3057\u3066\u307f\u308b\u3068\u3053\u3093\u306a\u611f\u3058\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"481\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-1-1024x481.png\" alt=\"\" class=\"wp-image-1055\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-1-1024x481.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-1-300x141.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-1-768x361.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-1-624x293.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-1.png 1259w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u4f55\u304b\u30d5\u30e9\u30b0\u304c\u66f8\u304b\u308c\u3066\u3044\u308b\u304c <code>{<\/code> \u3068 <code>}<\/code> \u306e\u9593\u306e\u6570\u5b57\u304c\u308f\u304b\u3089\u306a\u304f\u306a\u3063\u3066\u3044\u308b\u3002\u30de\u30af\u30ed\u3092\u898b\u308b\u3068\u3053\u3093\u306a\u611f\u3058\u306b\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-2.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"537\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-2-1024x537.png\" alt=\"\" class=\"wp-image-1056\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-2-1024x537.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-2-300x157.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-2-768x403.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-2-624x327.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-2.png 1264w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u30bb\u30eb\u306e\u8272\u3092\u8a2d\u5b9a\u3057\u3066\u304a\u7d75\u63cf\u304d\u3057\u3066\u3044\u308b\u6a21\u69d8\u3002\u5b9f\u884c\u3057\u3066\u307f\u3066\u3082\u7279\u306b\u5909\u5316\u306f\u7121\u3044\u3088\u3046\u306b\u898b\u3048\u308b\u3002\u3088\u304f\u308f\u304b\u3089\u3093\u306e\u3067\u30c7\u30d0\u30c3\u30b0\u3057\u3066\u307f\u3088\u3046\u3068\u30b9\u30c6\u30c3\u30d7\u5b9f\u884c\u3057\u3066\u3044\u3063\u305f\u3068\u3053\u308d\u3001\u3042\u308b\u3068\u3053\u308d\u307e\u3067\u884c\u304f\u3068\u3053\u306e\u3088\u3046\u306b\u3002\u3053\u308c\u3088\u308a\u5148\u306b\u9032\u3080\u3068\u6570\u5b57\u304c\u6f70\u3055\u308c\u3066\u521d\u671f\u72b6\u614b\u3068\u540c\u3058\u306b\u306a\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-3.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"481\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-3-1024x481.png\" alt=\"\" class=\"wp-image-1057\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-3-1024x481.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-3-300x141.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-3-768x361.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-3-624x293.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-3.png 1259w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code><code>Flag: flag{268653}<\/code><\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6697\u7b97\u3067\u3082\u3067\u304d\u308b\u3051\u3069\uff1f [100pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u5b9f\u884c\u3057\u305f\u969b\u306e\u51fa\u529b\u5024\u306e68\u756a\u76ee\u306e\u5024\u3068\u3001\u3053\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304b\u3089\u63a8\u6e2c\u3055\u308c\u308b314\u756a\u76ee\u306e\u5024\u3092\u8db3\u3057\u305f\u6570\u3092\u7b54\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304c\u6539\u884c\u3055\u308c\u3066\u306a\u3044\u306e\u3067\u8aad\u307f\u306b\u304f\u3044\u304c\u30011000\u4ee5\u4e0b\u306e\u7d20\u6570\u3092\u6c42\u3081\u308b\u3082\u306e\u306b\u306a\u3063\u3066\u3044\u308b\u300268\u756a\u76ee\u306e\u7d20\u6570\u306f337\u3001314\u756a\u76ee\u306e\u7d20\u6570\u306f2083\u3067\u3001\u8db3\u3057\u30662420\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{2420}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">formjacking [200pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u306e\u30d5\u30a1\u30a4\u30eb\u306f\u300cCard Stealer\u300d\u3068\u547c\u3070\u308c\u308b\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u306e\u5165\u529b\u5024\u3092\u5916\u90e8\u3078\u9001\u4fe1\u3059\u308bJavaScript\u3067\u3059\u3002 \u30ab\u30fc\u30c9\u60c5\u5831\u304c\u59a5\u5f53\u306a\u5834\u5408\u3001\u305d\u306e\u5024\u306f\u5916\u90e8\u3078\u9001\u4fe1\u3055\u308c\u308b\u3088\u3046\u306a\u306e\u3067\u8ffd\u8de1\u3057\u305f\u3044\u3067\u3059\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u4e0e\u3048\u3089\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u306f\u96e3\u8aad\u5316\u3055\u308c\u305fJavaScript\u30d5\u30a1\u30a4\u30eb\u3002\u89e3\u8aad\u3059\u308b\u306e\u306f\u81ea\u5206\u306b\u306f\u7121\u7406\u306a\u306e\u3067 <a href=\"https:\/\/github.com\/CapacitorSet\/box-js\" target=\"_blank\" rel=\"noopener\" title=\"\">box-js<\/a> \u3092\u4f7f\u3063\u3066\u89e3\u6790\u3057\u3066\u307f\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-4.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"200\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-4-1024x200.png\" alt=\"\" class=\"wp-image-1058\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-4-1024x200.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-4-300x59.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-4-768x150.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-4-624x122.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-4.png 1051w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u30a2\u30af\u30bb\u30b9\u5148\u306eURL\u304c\u5f97\u3089\u308c\u305f\u3002<code>cardnumber<\/code> \u306b\u306f\u30c6\u30b9\u30c8\u7528\u306e\u30ab\u30fc\u30c9\u756a\u53f7\u3001<code>exp-date<\/code> \u306b\u306f\u672a\u6765\u306e\u65e5\u4ed8\u3001<code>cvc<\/code> \u306b\u306f\u9069\u5f53\u306a\u5024\u3092\u5165\u308c\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51fa\u3057\u3066\u307f\u308b\u3068\u30d5\u30e9\u30b0\u304c\u5f97\u3089\u308c\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-5.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1012\" height=\"60\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-5.png\" alt=\"\" class=\"wp-image-1059\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-5.png 1012w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-5-300x18.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-5-768x46.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-5-624x37.png 624w\" sizes=\"auto, (max-width: 1012px) 100vw, 1012px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{f1iping_de0bfuscat0r}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">loop in loop [300pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4ee5\u4e0b\u306e\u8981\u4ef6\u3092\u6e80\u305f\u3059\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u8a00\u8a9e\u306f\u554f\u3044\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\uff11\uff0e\u5f15\u6570\u3068\u3057\u3066\u4ee5\u4e0b\u306e\u5024\u3092\u6307\u5b9a\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u5f15\u6570\uff1a\u6587\u5b57\u5217<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u5f15\u6570\uff1a\u6587\u5b57\u5217<\/li>\n<\/ul>\n\n\n\n<p>\uff12\uff0e\u30d7\u30ed\u30b0\u30e9\u30e0\u5185\u90e8\u3067\u5f15\u6570\u306b\u4ee5\u4e0b\u306e\u51e6\u7406\u3092\u52a0\u3048\u308b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u305d\u308c\u305e\u308c\u306e\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u6c42\u3081\u308b\u3002\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u306fRIPEMD160\u3092\u4f7f\u7528\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u7b2c\u4e00\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e1\u6587\u5b57\u76ee\u3068\u7b2c\u4e8c\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e1\u6587\u5b57\u76ee\u3092\u629c\u304d\u51fa\u3057\u3001\u305d\u308c\u3089\u306e\u5024\u304c\u4e21\u65b9\u6570\u5024\u3060\u3063\u305f\u5834\u5408\u3001\u305d\u308c\u3089\u306eXOR\u3092\u6c42\u3081\u308b\u3002\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u4f55\u3082\u51e6\u7406\u3057\u306a\u3044\u3002<\/li>\n\n\n\n<li>\u7d9a\u3044\u3066\u3001\u7b2c\u4e00\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e1\u6587\u5b57\u76ee\u3068\u7b2c\u4e8c\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e2\u6587\u5b57\u76ee\u3092\u629c\u304d\u51fa\u3057\u3001\u305d\u308c\u3089\u306e\u5024\u304c\u4e21\u65b9\u6570\u5024\u3060\u3063\u305f\u5834\u5408\u3001\u305d\u308c\u3089\u306eXOR\u3092\u6c42\u3081\u308b\u3002\u305d\u3046\u3067\u306a\u3044\u5834\u5408\u306f\u4f55\u3082\u51e6\u7406\u3057\u306a\u3044\u3002<\/li>\n\n\n\n<li>\u540c\u69d8\u306b\u30013\u6587\u5b57\u76ee\u30014\u6587\u5b57\u76ee\u3068\u7d9a\u3051\u3001\u3068\u7b2c\u4e8c\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e\u6700\u5f8c\u306e\u6587\u5b57\u307e\u3067\u884c\u3046\u3002<\/li>\n\n\n\n<li>\u7d9a\u3051\u3066\u7b2c\u4e00\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e2\u6587\u5b57\u76ee\u306b\u5bfe\u3057\u3066\u7b2c\u4e8c\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e1\u6587\u5b57\u76ee\u304b\u3089\u540c\u69d8\u306e\u51e6\u7406\u3092\u884c\u3046\u3002<\/li>\n\n\n\n<li>\u540c\u69d8\u306b\u7b2c\u4e00\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e3\u6587\u5b57\u76ee\u30014\u6587\u5b57\u76ee\u3068\u7d9a\u3051\u3001\u3068\u7b2c\u4e00\u5f15\u6570\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u306e\u6700\u5f8c\u306e\u6587\u5b57\u307e\u3067\u884c\u3046\u3002<\/li>\n\n\n\n<li>\u305d\u308c\u305e\u308c\u306e\u5024\u3092\u52a0\u7b97\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u52a0\u7b97\u3055\u308c\u305f\u5024\u309210\u9032\u6570\u3067\u51fa\u529b\u3059\u308b\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3053\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u4e0b\u8a18\u306e\u5f15\u6570\u3092\u4e0e\u3048\u305f\u6642\u306b\u51fa\u529b\u3055\u308c\u308b\u5024\u3092\u7b54\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7b2c\u4e00\u5f15\u6570\uff1aPhoenix<\/li>\n\n\n\n<li>\u7b2c\u4e8c\u5f15\u6570\uff1aMessiah<\/li>\n<\/ul>\n<\/blockquote>\n\n\n\n<p>\u554f\u984c\u6587\u304c\u9577\u3044\u3002\u3061\u3083\u3093\u3068\u8aad\u307e\u305a\u306bChatGPT\u306b\u7a81\u3063\u8fbc\u3093\u3060\u3089\u7b54\u3048\u304c\u5f97\u3089\u308c\u305f\u3002\u30d7\u30ed\u30b0\u30e9\u30e0\u4f5c\u6210\u3068\u5f15\u6570\u3092\u4e0e\u3048\u308b\u306e\u3092\u5225\u3005\u306b\u5165\u529b\u3059\u308b\u3068\u6b63\u3057\u3044\u7b54\u3048\u3092\u51fa\u3057\u3066\u304d\u305f\u304c\u3001\u554f\u984c\u6587\u5168\u90e8\u3092\u307e\u3068\u3081\u3066\u5165\u529b\u3057\u305f\u3089\u9593\u9055\u3063\u305f\u7b54\u3048\u3092\u51fa\u3057\u3066\u304d\u305f\u3002\u30b3\u30fc\u30c9\u306f\u5408\u3063\u3066\u3088\u3046\u306b\u898b\u3048\u308b\u3093\u3060\u304c\u8b0e\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/chatgpt.com\/share\/679f287a-36b4-8004-8655-1196df750e62\" target=\"_blank\" rel=\"noopener\" title=\"\">https:\/\/chatgpt.com\/share\/679f287a-36b4-8004-8655-1196df750e62<\/a><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{5785}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">NW\u30ab\u30c6\u30b4\u30ea\uff08\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u982d\u304c\u809d\u5fc3\u3067\u3059 [100pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u3057\u305f\u30e1\u30fc\u30eb\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30d5\u30e9\u30b0\u3092\u63a2\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u30d5\u30e9\u30b0\u306f\u3053\u306e\u30e1\u30fc\u30eb\u304c\u5c4a\u304f\u307e\u3067\u306b\u7d4c\u7531\u3057\u305f\uff12\u756a\u76ee\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u306eIP\u30a2\u30c9\u30ec\u30b9\u3068\u3057\u307e\u3059\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u30a8\u30c7\u30a3\u30bf\u3067\u958b\u304f\u3068\u3053\u3093\u306a\u611f\u3058\u3002ISO-2022-JP\u304c\u3061\u3083\u3093\u3068\u89e3\u91c8\u3055\u308c\u3066\u306a\u3044\u3051\u3069\u307e\u3042\u8aad\u3081\u306a\u3044\u3053\u3068\u306f\u306a\u3044\u3002<\/p>\n\n\n\n<p><code>Received<\/code> \u306e\u9593\u306b <code>To<\/code> \u3084 <code>Subject<\/code> \u304c\u631f\u307e\u3063\u3066\u3044\u308b\u4e0d\u601d\u8b70\u306a\u5f62\u5f0f\u3060\u304c\u3001\u305d\u3053\u306b\u306f\u76ee\u3092\u3064\u3076\u3063\u3066 <code>Received<\/code> \u3092\u898b\u3066\u3044\u304f\u3002<code>Received<\/code> \u306f\u30b5\u30fc\u30d0\u3092\u7d4c\u7531\u3059\u308b\u3054\u3068\u306b\u4e0a\u306b\u8ffd\u52a0\u3055\u308c\u308b\u306e\u3067\u3001\u4e0b\u304b\u30892\u756a\u76ee\u306e <code>Received<\/code> \u306e <code>by<\/code> \u306e\u5f8c\u306b\u7d9a\u304f\u306e\u304c2\u756a\u76ee\u306e\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u3067 <code>mx.example.com<\/code> \u3067\u3042\u308b\u3068\u308f\u304b\u308b\u3002\u305d\u306eIP\u30a2\u30c9\u30ec\u30b9\u306f\u3082\u3046\u4e00\u3064\u4e0a\u306e <code>Received<\/code> \u306b\u66f8\u3044\u3066\u3042\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{172.16.25.39}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">3 Way Handshake? [200pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u3057\u305f\u306e\u306fTCP\u30dd\u30fc\u30c8\u30b9\u30ad\u30e3\u30f3\u6642\u306e\u30d1\u30b1\u30c3\u30c8\u30ed\u30b0\u3067\u3059\u3002 \u30aa\u30fc\u30d7\u30f3\u30dd\u30fc\u30c8\u3092\u898b\u3064\u3051\u3066\u304f\u3060\u3055\u3044\u3002 \u30aa\u30fc\u30d7\u30f3\u3057\u3066\u3044\u308b\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u5c0f\u3055\u3044\u9806\u306b\u300c,(\u30ab\u30f3\u30de)\u300d\u3067\u533a\u5207\u3063\u3066\u7b54\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u30dd\u30fc\u30c8\u304c\u30aa\u30fc\u30d7\u30f3\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306f <code>SYN+ACK<\/code> \u304c\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067\u3053\u308c\u3092\u62bd\u51fa\u3059\u308b\u30d5\u30a3\u30eb\u30bf\u3092\u4f5c\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-6.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"572\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-6-1024x572.png\" alt=\"\" class=\"wp-image-1060\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-6-1024x572.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-6-300x167.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-6-768x429.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-6-624x348.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-6.png 1134w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p><code>info<\/code> \u5217\u306b\u66f8\u3044\u3066\u3042\u308b\u77e2\u5370\u306e\u5de6\u5074\u306e\u6570\u5b57\u304c\u958b\u3044\u3066\u3044\u308b\u30dd\u30fc\u30c8\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{21,23,37,70,79,98,109,110,111,113,143,513,514,1025,50506}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u3055\u3042\u5f97\u70b9\u306f\uff1f [200pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u3055\u308c\u305f\u30d1\u30b1\u30c3\u30c8\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u653b\u6483\u3092\u7279\u5b9a\u3057\u3001\u305d\u306e\u653b\u6483\u306eCVE\u3092\u8abf\u3079\u3066\u304f\u3060\u3055\u3044\u3002 \u305d\u306e\u653b\u6483\u306eCVSS Version2.0\u306eBaseScore\u304c\u30d5\u30e9\u30b0\u3067\u3059\u3002 CVSS\u306e\u30b9\u30b3\u30a2\u306fNIST\u3067\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u5024\u3068\u3057\u307e\u3059\u3002 <a href=\"https:\/\/nvd.nist.gov\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/nvd.nist.gov\/<\/a><\/p>\n<\/blockquote>\n\n\n\n<p>\u6700\u521d\u306eTCP\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u898b\u308b\u304b\u3089\u306b\u602a\u3057\u3044 <code>Range<\/code> \u3084 <code>Request-Range<\/code> \u30d8\u30c3\u30c0\u304c\u898b\u3048\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-7.png\"><img loading=\"lazy\" decoding=\"async\" width=\"575\" height=\"409\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-7.png\" alt=\"\" class=\"wp-image-1061\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-7.png 575w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-7-300x213.png 300w\" sizes=\"auto, (max-width: 575px) 100vw, 575px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>&#8220;HTTP Range \u8106\u5f31\u6027&#8221;\u3068\u3044\u3063\u305f\u30ad\u30fc\u30ef\u30fc\u30c9\u3067\u691c\u7d22\u3059\u308b\u3068\u554f\u984c\u306eCVE\u304cCVE-2011-3192\u3068\u308f\u304b\u308b\u3002NIST\u306e\u30da\u30fc\u30b8\u3067\u3053\u306e\u8106\u5f31\u6027\u3092\u8abf\u3079\u308b\u3068CVSS 2.0\u306eBaseScore\u304c7.8\u3068\u308f\u304b\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-8.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"294\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-8-1024x294.png\" alt=\"\" class=\"wp-image-1063\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-8-1024x294.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-8-300x86.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-8-768x220.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-8-624x179.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-8.png 1371w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{7.8}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">decode [300pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u306e\u30d1\u30b1\u30c3\u30c8\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u30d5\u30e9\u30b0\u3092\u63a2\u3057\u3066\u304f\u3060\u3055\u3044<\/p>\n<\/blockquote>\n\n\n\n<p>\u914d\u5e03\u3055\u308c\u305fZip\u30d5\u30a1\u30a4\u30eb\u3092\u5c55\u958b\u3059\u308b\u3068pcap\u30d5\u30a1\u30a4\u30eb\u304c\u305f\u304f\u3055\u3093\u3002\u3069\u3046\u3084\u3089\u7d30\u5207\u308c\u306b\u3057\u305f\u30d5\u30a1\u30a4\u30eb\u306e\u3088\u3046\u306a\u306e\u3067\u3001Wireshark\u4ed8\u5c5e\u306e <code>mergecap<\/code> \u3067\u4e00\u3064\u306b\u307e\u3068\u3081\u3066\u898b\u3066\u307f\u308b\u3002<\/p>\n\n\n\n<p>HTTP\u901a\u4fe1\u3092\u898b\u3066\u307f\u308b\u3068\u3001<code>image.php<\/code> \u306bGET\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u3063\u3066\u753b\u50cf\u3092\u53d6\u5f97\u3057\u3066\u3044\u308b\u3002\u753b\u50cf\u30c7\u30fc\u30bf\u306f\u30ec\u30b9\u30dd\u30f3\u30b9\u306eJSON\u30c7\u30fc\u30bf\u306e <code>image<\/code> \u30ad\u30fc\u306e\u5024\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-10.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"598\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-10-1024x598.png\" alt=\"\" class=\"wp-image-1065\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-10-1024x598.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-10-300x175.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-10-768x449.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-10-624x365.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-10.png 1410w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u5024\u3092\u30b3\u30d4\u30fc\u3057\u3066CyberChef\u3092\u4f7f\u3063\u3066\u51e6\u7406\u3059\u308b\u3068\u753b\u50cf\u306e\u78ba\u8a8d\u307e\u3067\u3067\u304d\u308b\u3002\u304b\u308f\u3044\u3044\u732b\u3061\u3083\u3093\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-9.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-9-1024x680.png\" alt=\"\" class=\"wp-image-1064\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-9-1024x680.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-9-300x199.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-9-768x510.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-9-624x414.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-9.png 1370w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p><code>200 OK<\/code> \u304c\u8fd4\u3063\u3066\u304d\u3066\u3044\u308b\u306e\u306f\u5168\u3066\u732b\u3061\u3083\u3093\u306e\u753b\u50cf\u3067\u7279\u306b\u30d5\u30e9\u30b0\u306b\u7e4b\u304c\u308b\u60c5\u5831\u306f\u7121\u304b\u3063\u305f\u3002\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u6b63\u3057\u304f\u53d6\u308c\u3066\u304a\u3089\u305a\u3001&#8221;Continuation&#8221;\u3068\u306a\u3063\u3066\u3044\u308b\u3082\u306e\u304c\u3044\u304f\u3064\u304b\u3042\u308b\u306e\u3067\u3001TCP\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u8ffd\u8de1\u3092\u3059\u308b\u3068\u305d\u308c\u3089\u3067\u3082\u30ec\u30b9\u30dd\u30f3\u30b9\u306eJSON\u30c7\u30fc\u30bf\u3092\u5f97\u3089\u308c\u308b\u3002\u305d\u306e\u3046\u3061\u306e\u4e00\u3064\u306b\u30d5\u30e9\u30b0\u304c\u66f8\u304b\u308c\u3066\u3044\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-11.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"680\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-11-1024x680.png\" alt=\"\" class=\"wp-image-1066\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-11-1024x680.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-11-300x199.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-11-768x510.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-11-624x414.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-11.png 1370w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{c4ptur3_cat}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">WE\u30ab\u30c6\u30b4\u30ea\uff08Web\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7c21\u5358\u306b\u306f\u898b\u305b\u307e\u305b\u3093 [100pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><a href=\"https:\/\/we1-prod.2025winter-cybercontest.net\" target=\"_blank\" rel=\"noopener\" title=\"\">https:\/\/we1-prod.2025winter-cybercontest.net<\/a><\/p>\n<\/blockquote>\n\n\n\n<p>\u30a2\u30af\u30bb\u30b9\u3057\u3066\u3082\u300c\u3053\u306e\u30da\u30fc\u30b8\u306b\u30d5\u30e9\u30b0\u306f\u3042\u308a\u307e\u305b\u3093\u300d\u3068\u51fa\u308b\u306e\u307f\u3002\u304a\u3082\u3080\u308d\u306b <code>dirb<\/code> \u3092\u4ed5\u639b\u3051\u3066\u307f\u308b\u3068\u3001<code>blue<\/code> \u3068\u3044\u3046\u30d5\u30a9\u30eb\u30c0\u304c\u3042\u308a\u3001\u30d5\u30a1\u30a4\u30eb\u30ea\u30b9\u30c8\u304c\u898b\u3048\u308b\u3053\u3068\u304c\u308f\u304b\u3063\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-12.png\"><img loading=\"lazy\" decoding=\"async\" width=\"678\" height=\"557\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-12.png\" alt=\"\" class=\"wp-image-1067\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-12.png 678w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-12-300x246.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-12-624x513.png 624w\" sizes=\"auto, (max-width: 678px) 100vw, 678px\" \/><\/a><\/figure>\n\n\n\n<p>\u8fbf\u308b\u3068\u300c\u3053\u306e\u30da\u30fc\u30b8\u306b\u30d5\u30e9\u30b0\u304c\u3042\u308a\u307e\u3059\u300d\u3068\u51fa\u308b\u3002\u306f\u3044\u30012000\u5e74\u4ee3\u3092\u751f\u304d\u305f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u8001\u4eba\u4f1a\u54e1\u306b\u306f\u7c21\u5358\u3067\u3059\u306d\u3002\u30bd\u30fc\u30b9\u3092\u898b\u308c\u3070\u3044\u3044\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-13.png\"><img loading=\"lazy\" decoding=\"async\" width=\"792\" height=\"478\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-13.png\" alt=\"\" class=\"wp-image-1068\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-13.png 792w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-13-300x181.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-13-768x464.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-13-624x377.png 624w\" sizes=\"auto, (max-width: 792px) 100vw, 792px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{TakeMeToTheFlag}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a66\u7df4\u3092\u4e57\u308a\u8d8a\u3048\u308d\uff01 [100pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e0b\u8a18\u306eURL\u304b\u3089\u30d5\u30e9\u30b0\u3092\u5165\u624b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/we2-prod.2025winter-cybercontest.net\" target=\"_blank\" rel=\"noopener\" title=\"\">https:\/\/we2-prod.2025winter-cybercontest.net<\/a><\/p>\n<\/blockquote>\n\n\n\n<p>\u30d5\u30e9\u30b0\u3092\u5f97\u308b\u306b\u306f1\u4e07\u554f\u306e\u8cea\u554f\u306b\u7b54\u3048\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u3089\u3057\u3044\u3002\u3053\u308c\u306f\u5927\u5909\u3060\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-14.png\"><img loading=\"lazy\" decoding=\"async\" width=\"785\" height=\"385\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-14.png\" alt=\"\" class=\"wp-image-1069\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-14.png 785w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-14-300x147.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-14-768x377.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-14-624x306.png 624w\" sizes=\"auto, (max-width: 785px) 100vw, 785px\" \/><\/a><\/figure>\n\n\n\n<p>\u554f\u984c\u306f\u300c\u4eca\u306f\u4f55\u554f\u76ee\uff1f\u300d\u3067\u5e38\u306b\u540c\u3058\u6a21\u69d8\u30021\u4e07\u554f\u76ee\u306e\u554f\u984c\u306e\u7b54\u3048\u3082\u308f\u304b\u308b\u3002\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u3044\u3058\u3063\u30661\u4e07\u554f\u76ee\u306e\u554f\u984c\u306b\u7b54\u3048\u3066\u3044\u308b\u3088\u3046\u306b\u3059\u308c\u3070\u3088\u3044\u3002<\/p>\n\n\n\n<p>\u79c1\u306fFirefox\u3092\u4f7f\u3063\u3066\u3044\u3066\u3001Firefox\u306e\u958b\u767a\u8005\u30c4\u30fc\u30eb\u3067\u306f\u904e\u53bb\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u7de8\u96c6\u3057\u3066\u518d\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u3067\u305d\u306e\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u653b\u7565\u3059\u308b\u3002\u4e0b\u56f3\u306e\u5de6\u4e0b\u306e\u300c\u30dc\u30c7\u30a3\u300d\u306b\u3042\u308b <code>qCount<\/code> \u3068 <code>answer<\/code> \u3067\u4eca\u4f55\u554f\u76ee\u304b\u3001\u305d\u308c\u306b\u5bfe\u3059\u308b\u56de\u7b54\u306f\u4f55\u304b\u3092\u8868\u3057\u3066\u3044\u308b\u306e\u3067\u305d\u3053\u3092\u3044\u3058\u3063\u306610000\u306b\u3057\u3066\u3084\u308b\u3068\u30d5\u30e9\u30b0\u304c\u5f97\u3089\u308c\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-15.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-15-1024x576.png\" alt=\"\" class=\"wp-image-1070\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-15-1024x576.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-15-300x169.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-15-768x432.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-15-624x351.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-15.png 1400w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{WinThroughTheGame}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u76f4\u3057\u3066\u308b\u6700\u4e2d\u306a\u3093\u3067\u3059 [200pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e0b\u8a18\u306e\u30b5\u30a4\u30c8\u304b\u3089\u8106\u5f31\u6027\u306e\u3042\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u7279\u5b9a\u3057\u3001\u305d\u306e\u8106\u5f31\u6027\u3092\u5229\u7528\u3057\u3066\u30d5\u30e9\u30b0\u3092\u5165\u624b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/we3-prod.2025winter-cybercontest.net\" target=\"_blank\" rel=\"noopener\" title=\"\">https:\/\/we3-prod.2025winter-cybercontest.net<\/a><\/p>\n\n\n\n<p>\u30d5\u30e9\u30b0\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u30d5\u30a1\u30a4\u30eb\u306f\u4e0b\u8a18\u306e\u901a\u308a\u3067\u3059\u3002 \/etc\/WE-3<\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-16.png\"><img loading=\"lazy\" decoding=\"async\" width=\"793\" height=\"453\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-16.png\" alt=\"\" class=\"wp-image-1071\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-16.png 793w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-16-300x171.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-16-768x439.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-16-624x356.png 624w\" sizes=\"auto, (max-width: 793px) 100vw, 793px\" \/><\/a><\/figure>\n\n\n\n<p>\u30bd\u30fc\u30b9\u3092\u898b\u308b\u3068\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u306e\u4ed5\u7d44\u307f\u3068\u3084\u3089\u304c\u308f\u304b\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-17.png\"><img loading=\"lazy\" decoding=\"async\" width=\"793\" height=\"758\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-17.png\" alt=\"\" class=\"wp-image-1072\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-17.png 793w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-17-300x287.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-17-768x734.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-17-624x596.png 624w\" sizes=\"auto, (max-width: 793px) 100vw, 793px\" \/><\/a><\/figure>\n\n\n\n<p><code>download.js<\/code> \u306b\u3042\u308b <code>dlFile<\/code> \u3068\u3044\u3046\u95a2\u6570\u3092\u4f7f\u3063\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u30c0\u30a6\u30f3\u30ed\u30fc\u30c9\u3067\u304d\u308b\u3089\u3057\u3044\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-18.png\"><img loading=\"lazy\" decoding=\"async\" width=\"472\" height=\"356\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-18.png\" alt=\"\" class=\"wp-image-1073\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-18.png 472w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-18-300x226.png 300w\" sizes=\"auto, (max-width: 472px) 100vw, 472px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p><code>download.php<\/code> \u306b\u30d5\u30a1\u30a4\u30eb\u540d\u3092POST\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u53d6\u5f97\u3059\u308b\u65b9\u5f0f\u306e\u6a21\u69d8\u3002\u3053\u3046\u3044\u3046\u6642\u306b\u8a66\u3059\u306e\u306f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u30c8\u30e9\u30d0\u30fc\u30b5\u30eb\u3067\u3059\u306d\u3002\u3053\u308c\u3067\u76ee\u7684\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u30b2\u30c3\u30c8\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-19.png\"><img loading=\"lazy\" decoding=\"async\" width=\"995\" height=\"184\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-19.png\" alt=\"\" class=\"wp-image-1074\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-19.png 995w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-19-300x55.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-19-768x142.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-19-624x115.png 624w\" sizes=\"auto, (max-width: 995px) 100vw, 995px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{fGrantUB56skBTlmF14mostFP}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u76f4\u63a5\u805e\u3044\u3066\u307f\u305f\u3089\uff1f [200pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4e0b\u8a18\u306eURL\u306fAPI\u30c6\u30b9\u30c8\u306e\u305f\u3081\u306e\u30d5\u30a9\u30fc\u30e0\u3067\u3059\u3002 \u3053\u3053\u304b\u3089\u30d5\u30e9\u30b0\u3092\u5165\u624b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/we4-prod.2025winter-cybercontest.net\" target=\"_blank\" rel=\"noopener\" title=\"\">https:\/\/we4-prod.2025winter-cybercontest.net<\/a><\/p>\n<\/blockquote>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-20.png\"><img loading=\"lazy\" decoding=\"async\" width=\"719\" height=\"461\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-20.png\" alt=\"\" class=\"wp-image-1075\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-20.png 719w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-20-300x192.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-20-624x400.png 624w\" sizes=\"auto, (max-width: 719px) 100vw, 719px\" \/><\/a><\/figure>\n\n\n\n<p>\u554f\u3044\u5408\u308f\u305b\u30dc\u30bf\u30f3\u3092\u62bc\u3057\u3066\u307f\u3066\u958b\u767a\u8005\u30c4\u30fc\u30eb\u3067\u898b\u3066\u307f\u308b\u3068\u3001Base64\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u9001\u3063\u3066\u3001\u6c42\u3081\u308b\u60c5\u5831\u3092\u8fd4\u3057\u3066\u3082\u3089\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-21.png\"><img loading=\"lazy\" decoding=\"async\" width=\"542\" height=\"104\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-21.png\" alt=\"\" class=\"wp-image-1076\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-21.png 542w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-21-300x58.png 300w\" sizes=\"auto, (max-width: 542px) 100vw, 542px\" \/><\/a><\/figure>\n<\/div>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-22.png\"><img loading=\"lazy\" decoding=\"async\" width=\"547\" height=\"123\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-22.png\" alt=\"\" class=\"wp-image-1077\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-22.png 547w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-22-300x67.png 300w\" sizes=\"auto, (max-width: 547px) 100vw, 547px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>\u9001\u3063\u305f\u30c7\u30fc\u30bf\u3092\u30c7\u30b3\u30fc\u30c9\u3057\u3066\u307f\u308b\u3068\u3069\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u304c\u6b32\u3057\u3044\u304b\u3092\u793a\u3057\u305f\u30c7\u30fc\u30bf\u306b\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-24.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1011\" height=\"469\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-24.png\" alt=\"\" class=\"wp-image-1079\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-24.png 1011w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-24-300x139.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-24-768x356.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-24-624x289.png 624w\" sizes=\"auto, (max-width: 1011px) 100vw, 1011px\" \/><\/a><\/figure>\n\n\n\n<p>\u4eca\u56de\u6b32\u3057\u3044\u306e\u306f\u30d5\u30e9\u30b0\u306a\u306e\u3067\u3001<code>flag<\/code> \u3092\u30ea\u30af\u30a8\u30b9\u30c8\u3057\u3066\u307f\u308b\u3068\u30d5\u30e9\u30b0\u304c\u5f97\u3089\u308c\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-23.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1011\" height=\"469\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-23.png\" alt=\"\" class=\"wp-image-1078\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-23.png 1011w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-23-300x139.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-23-768x356.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-23-624x289.png 624w\" sizes=\"auto, (max-width: 1011px) 100vw, 1011px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-25.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"656\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-25-1024x656.png\" alt=\"\" class=\"wp-image-1080\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-25-1024x656.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-25-300x192.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-25-768x492.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-25-624x399.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-25.png 1184w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{ParameterHandlingError}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6574\u5217\uff01 [300pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u65d7\u306e\u4e0b\u306b\u5fc5\u8981\u306a\u8005\u3060\u3051\u304c\u6b63\u3057\u304f\u4e26\u3079\u3070\u3044\u3044\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/we5-prod.2025winter-cybercontest.net\" target=\"_blank\" rel=\"noopener\" title=\"\">https:\/\/we5-prod.2025winter-cybercontest.net<\/a><\/p>\n<\/blockquote>\n\n\n\n<p>\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u30ea\u30b9\u30c8\u304c\u51fa\u3066\u304f\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-26.png\"><img loading=\"lazy\" decoding=\"async\" width=\"452\" height=\"916\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-26.png\" alt=\"\" class=\"wp-image-1081\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-26.png 452w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-26-148x300.png 148w\" sizes=\"auto, (max-width: 452px) 100vw, 452px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>ID\u306e\u6a2a\u306b\u3042\u308bUp\/Down\u30dc\u30bf\u30f3\u3067ID\u306e\u5024\u306e\u6607\u9806\/\u964d\u9806\u306b\u4e26\u3079\u66ff\u3048\u304c\u3067\u304d\u308b\u3002\u3053\u306e\u6642\u3001\u30a2\u30c9\u30ec\u30b9\u30d0\u30fc\u3092\u898b\u308b\u3068 <code>sort=id+ASC<\/code> \u3068\u3044\u3046\u30af\u30a8\u30ea\u6587\u5b57\u5217\u304c\u304f\u3063\u3064\u3044\u3066\u3044\u308b\u3002\u3053\u308c\u306fSQL\u6587\u306eorder\u53e5\u306e\u5024\u3060\u3068\u601d\u308f\u308c\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-27.png\"><img loading=\"lazy\" decoding=\"async\" width=\"769\" height=\"80\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-27.png\" alt=\"\" class=\"wp-image-1082\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-27.png 769w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-27-300x31.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-27-624x65.png 624w\" sizes=\"auto, (max-width: 769px) 100vw, 769px\" \/><\/a><\/figure>\n\n\n\n<p>\u30af\u30a8\u30ea\u90e8\u5206\u3092\u66f8\u304d\u63db\u3048\u3066 <code>sort=flagSec+ASC<\/code> \u306b\u3059\u308b\u3068\u30d5\u30e9\u30b0\u6587\u5b57\u5217\u304c\u898b\u3048\u308b\u304c\u982d\u306e\u65b9\u3057\u304b\u898b\u3048\u3066\u3044\u306a\u3044\u3002order\u53e5\u306e\u5f8c\u308d\u3067\u4ef6\u6570\u5236\u9650\u3092\u3057\u3066\u3044\u308b\u3068\u63a8\u6e2c\u3057\u3066\u3001order\u53e5\u3067SQL\u6587\u3092\u7d42\u308f\u3089\u305b\u3066\u307f\u308b\u3068\u5168\u4ef6\u51fa\u3066\u304d\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-29.png\"><img loading=\"lazy\" decoding=\"async\" width=\"739\" height=\"563\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-29.png\" alt=\"\" class=\"wp-image-1084\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-29.png 739w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-29-300x229.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-29-624x475.png 624w\" sizes=\"auto, (max-width: 739px) 100vw, 739px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{6f24d2267d87b7b232ed0d6ed3ad2924}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">CY\u30ab\u30c6\u30b4\u30ea\uff08\u6697\u53f7\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u30a8\u30f3\u30b3\u30fc\u30c9\u65b9\u6cd5\u306f\u4e00\u3064\u3058\u3083\u306a\u3044 [100pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u4ee5\u4e0b\u306e\u6587\u5b57\u5217\u3092\u30c7\u30b3\u30fc\u30c9\u3057\u3066Flag\u3092\u7b54\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>%26%23%78%35%35%3b%26%23%78%36%33%3b%26%23%78%36%31%3b%26%23%78%36%65%3b%26%23%78%34%32%3b%26%23%78%37%64%3b%56%6d%46%79%61%57%39%31%63%30%56%75%59%32%39%6b%61%57%35%6e%63%77%3d%3d%36%36%36%63%36%31%36%37%37%62<\/p>\n<\/blockquote>\n\n\n\n<p>URL\u30a8\u30f3\u30b3\u30fc\u30c9\u3055\u308c\u3066\u3044\u308b\u306e\u3067CyberChef\u3067\u30c7\u30b3\u30fc\u30c9\u3057\u3066\u307f\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-30.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"376\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-30-1024x376.png\" alt=\"\" class=\"wp-image-1085\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-30-1024x376.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-30-300x110.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-30-768x282.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-30-624x229.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-30.png 1174w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>HTML\u306e\u6570\u5024\u6587\u5b57\u53c2\u7167\u3068Base64\u3001\u6587\u5b57\u5217\u309216\u9032\u8868\u8a18\u3057\u305f\u3082\u306e\u306e3\u3064\u306e\u30d1\u30fc\u30c8\u306b\u5206\u3051\u3089\u308c\u308b\u306e\u3067\u3001\u305d\u308c\u305e\u308c\u30c7\u30b3\u30fc\u30c9\u3057\u3066\u4e26\u3079\u66ff\u3048\u3066\u30d5\u30e9\u30b0\u3092\u7372\u5f97\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-31.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"304\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-31-1024x304.png\" alt=\"\" class=\"wp-image-1086\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-31-1024x304.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-31-300x89.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-31-768x228.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-31-624x185.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-31.png 1174w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-32.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"304\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-32-1024x304.png\" alt=\"\" class=\"wp-image-1087\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-32-1024x304.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-32-300x89.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-32-768x228.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-32-624x185.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-32.png 1174w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-33.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"304\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-33-1024x304.png\" alt=\"\" class=\"wp-image-1088\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-33-1024x304.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-33-300x89.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-33-768x228.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-33-624x185.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-33.png 1174w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{VariousEncodingsUcanB}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">File Integrity of Long Hash [100pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6dfb\u4ed8\u306eZIP\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u304b\u3089\u4e0b\u8a18\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u63a2\u3057\u3066\u304f\u3060\u3055\u3044\u3002 \u30d5\u30e9\u30b0\u306f\u305d\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u306b\u66f8\u304b\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>189930e3d9e75f4c9000146c3eb12cbb978f829dd9acbfffaf4b3d72701b70f38792076f960fa7552148e8607534a15b98a4ae2a65cb8bf931bbf73a1cdbdacf<\/p>\n<\/blockquote>\n\n\n\n<p>\u3053\u306e\u9577\u3044\u6587\u5b57\u5217\u306fSHA512\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u3068\u601d\u308f\u308c\u308b\u306e\u3067\u8a72\u5f53\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u3092\u63a2\u3059\u3068\u4e00\u81f4\u3059\u308b\u3082\u306e\u304c\u3042\u3063\u305f\u306e\u3067\u305d\u306e\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304b\u308c\u3066\u3044\u308b\u3082\u306e\u304c\u6b63\u89e3\u306e\u30d5\u30e9\u30b0\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-34.png\"><img loading=\"lazy\" decoding=\"async\" width=\"995\" height=\"400\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-34.png\" alt=\"\" class=\"wp-image-1089\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-34.png 995w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-34-300x121.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-34-768x309.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-34-624x251.png 624w\" sizes=\"auto, (max-width: 995px) 100vw, 995px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{346D895B8FF3892191A645}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">Equation of ECC [200pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6955\u5186\u66f2\u7dda\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>a=56,b=58,p=127<\/p>\n\n\n\n<p>\u57fa\u6e96\u70b9(42,67)\u3068\u8a2d\u5b9a\u3057\u305f\u5834\u5408\u3001\u516c\u958b\u9375\u306e\u5024\u304c\u4e0b\u8a18\u306b\u306a\u308b\u79d8\u5bc6\u9375\u306e\u6700\u3082\u5c0f\u3055\u3044\u5024\u3092\u7b54\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<p>\u516c\u958b\u9375(53,30)<\/p>\n<\/blockquote>\n\n\n\n<p>\u3053\u308c\u3082ChatGPT\u306b\u805e\u3044\u305f\u3089\u6b63\u89e3\u3092\u51fa\u3057\u3066\u304f\u308c\u305f\u3002\u6b63\u89e3\u8005\u6570\u304c\u591a\u3044\u3068\u3053\u308d\u3092\u898b\u308b\u3068\u4ed6\u306e\u4eba\u3082\u540c\u3058\u3088\u3046\u306b\u3057\u305f\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u308f\u308c\u308b\u3002<\/p>\n\n\n\n<p><a href=\"https:\/\/chatgpt.com\/share\/679f4155-efa8-8004-82f7-05484973fba6\" target=\"_blank\" rel=\"noopener\" title=\"\">https:\/\/chatgpt.com\/share\/679f4155-efa8-8004-82f7-05484973fba6<\/a><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{16}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">PeakyEncode [300pt, xx solves]<\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>\u6587\u5b57\u5316\u3051\u3057\u305f\u6587\u304c\u9001\u3089\u308c\u3066\u304d\u307e\u3057\u305f\u3002\u9001\u4fe1\u8005\u306b\u3088\u308b\u3068\u3053\u306e\u6587\u5b57\u5316\u3051\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u304b\u3089\u63a2\u3057\u3066\u304d\u305f\u30ed\u30b8\u30c3\u30af\u3092\u4f7f\u3063\u3066\u6697\u53f7\u5316\u3092\u65bd\u3057\u305f\u304b\u3063\u305f\u305d\u3046\u3067\u3059\u3002 \u6697\u53f7\u5316\u3057\u305f\u969b\u306e\u74b0\u5883\u304c\u9001\u3089\u308c\u3066\u304d\u3066\u3044\u308b\u306e\u3067\u5fa9\u53f7\u304c\u3067\u304d\u306a\u3044\u3067\u3057\u3087\u3046\u304b\u3002<\/p>\n<\/blockquote>\n\n\n\n<p>\u914d\u5e03\u30d5\u30a1\u30a4\u30eb\u306e <code>script.rb<\/code> \u306f\u4ee5\u4e0b\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3002\u3053\u306e\u51fa\u529b\u304c <code>encryption<\/code> \u30d5\u30a1\u30a4\u30eb\u3002<code>Dockerfile<\/code> \u3082\u3042\u308b\u3051\u3069 <code>script.rb<\/code> \u3092\u5b9f\u884c\u3059\u308b\u3060\u3051\u3067\u7279\u306b\u8ffd\u52a0\u306e\u60c5\u5831\u306f\u306a\u3044\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: ruby; title: ; notranslate\" title=\"\">\nrequire &#039;.\/encode.rb&#039;\nflag = File.open(&quot;flag&quot;, &quot;r&quot;).read()\ngenerate = PeakeyEncode.new.generate(flag)\ngenerate = generate.gsub(&quot;&gt;&quot;, &quot;\ud83d\ude92&quot;)\ngenerate = generate.gsub(&quot;&lt;&quot;, &quot;\ud83d\ude2d&quot;)\ngenerate = generate.gsub(&quot;+&quot;, &quot;\ud83d\ude21&quot;)\ngenerate = generate.gsub(&quot;-&quot;, &quot;\ud83d\ude4c&quot;)\ngenerate = generate.gsub(&quot;.&quot;, &quot;\ud83c\udf3a&quot;)\ngenerate = generate.gsub(&quot;,&quot;, &quot;\u270d\ufe0f&quot;)\ngenerate = generate.gsub(&quot;&#x5B;&quot;, &quot;\ud83d\ude24&quot;)\ngenerate = generate.gsub(&quot;]&quot;, &quot;\ud83d\udc08&quot;)\n\nsjis = generate.force_encoding(Encoding::SJIS)\np sjis.encode(Encoding::UTF_8)\n<\/pre><\/div>\n\n\n<p><code>encode.rb<\/code> \u3067\u30d5\u30e9\u30b0\u3092\u4f55\u3089\u304b\u306e\u65b9\u5f0f\u3067\u30a8\u30f3\u30b3\u30fc\u30c9\u3057\u3066\u3044\u308b\u3088\u3046\u3060\u304c\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306f\u914d\u5e03\u3055\u308c\u3066\u3044\u306a\u3044\u306e\u3067\u51e6\u7406\u5185\u5bb9\u306f\u8b0e\u3002<code>encryption<\/code> \u306e\u4e2d\u8eab\u3092\u898b\u308b\u611f\u3058\u666e\u901a\u306e\u6587\u5b57\u306f\u542b\u307e\u308c\u3066\u3044\u306a\u3044\u306e\u3067\u3001\u3053\u3053\u3067\u5909\u63db\u3055\u308c\u3066\u3044\u308b\u8a18\u53f7\u3060\u3051\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u63a8\u6e2c\u3002<br>\u305d\u306e\u5f8c\u306b\u3084\u3063\u3066\u3044\u308b\u3053\u3068\u306f\u3001\u300cUTF-8\u3060\u3068\u5404\u7d75\u6587\u5b57\u3068\u3057\u3066\u89e3\u91c8\u3055\u308c\u308b\u30d0\u30a4\u30c8\u5217\u3092\u5f37\u5f15\u306bSJIS\u3068\u3057\u3066\u89e3\u91c8\u3001\u305d\u306e\u5f8cUTF-8\u306b\u5909\u63db\u300d\u3067\u3042\u308b\u3002<br>\u51e6\u7406\u304c\u3069\u3046\u3067\u3042\u308c\u3001\u4e00\u5b9a\u306e\u8a18\u53f7\u306e\u307f\u4f7f\u308f\u308c\u308b\u306e\u3067\u3042\u308c\u3070\u5404\u8a18\u53f7\u3068\u6700\u7d42\u7684\u306a\u51fa\u529b\u306e\u5bfe\u5fdc\u8868\u3092\u4f5c\u308c\u3070\u9006\u5909\u63db\u304c\u3067\u304d\u308b\u306e\u3067\u3001\u5bfe\u5fdc\u8868\u3092\u51fa\u529b\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3057\u305f\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: ruby; title: ; notranslate\" title=\"\">\nfor c in &#x5B;&#039;&gt;&#039;, &#039;&lt;&#039;, &#039;+&#039;, &#039;-&#039;, &#039;.&#039;, &#039;&#x5B;&#039;, &#039;]&#039;, &#039;,&#039;] do\n  print c\n  print &quot;\\t&quot;\n\n  c = c.gsub(&quot;&gt;&quot;, &quot;\ud83d\ude92&quot;)\n  c = c.gsub(&quot;&lt;&quot;, &quot;\ud83d\ude2d&quot;)\n  c = c.gsub(&quot;+&quot;, &quot;\ud83d\ude21&quot;)\n  c = c.gsub(&quot;-&quot;, &quot;\ud83d\ude4c&quot;)\n  c = c.gsub(&quot;.&quot;, &quot;\ud83c\udf3a&quot;)\n  c = c.gsub(&quot;&#x5B;&quot;, &quot;\ud83d\ude24&quot;)\n  c = c.gsub(&quot;]&quot;, &quot;\ud83d\udc08&quot;)\n  c = c.gsub(&quot;,&quot;, &quot;\u270d&quot;)\n\n  print c\n  print &quot;\\t&quot;\n\n  sjis = c.force_encoding(Encoding::SJIS)\n  utf8 = sjis.encode(Encoding::UTF_8)\n  print utf8\n  print &quot;\\t&quot;\n  puts &quot;#{utf8.bytes.map{|b|b.to_s(16)}}&quot;\nend\n<\/pre><\/div>\n\n\n<p>\u5b9f\u884c\u7d50\u679c\u306f\u4ee5\u4e0b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-35.png\"><img loading=\"lazy\" decoding=\"async\" width=\"886\" height=\"218\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-35.png\" alt=\"\" class=\"wp-image-1091\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-35.png 886w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-35-300x74.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-35-768x189.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-35-624x154.png 624w\" sizes=\"auto, (max-width: 886px) 100vw, 886px\" \/><\/a><\/figure>\n\n\n\n<p>\u30ab\u30f3\u30de\u306b\u5bfe\u5fdc\u3059\u308b\u7d75\u6587\u5b57\u306e\u5909\u63db\u6642\u306b\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u3053\u308c\u306f\u3001\u4ed6\u306e\u7d75\u6587\u5b57\u306fUTF-8\u3067\u306f4\u30d0\u30a4\u30c8\u3067\u3042\u308b\u3068\u3053\u308d\u3001\u30ab\u30f3\u30de\u306b\u5bfe\u5fdc\u3059\u308b\u7d75\u6587\u5b57\u3060\u30513\u30d0\u30a4\u30c8\u3067\u3042\u308b\u3053\u3068\u304c\u539f\u56e0\u3002SJIS\u306fASCII\u6587\u5b57\u4ee5\u59161\u6587\u5b572\u30d0\u30a4\u30c8\u306a\u306e\u3067\u5909\u63db\u3067\u304d\u306a\u304f\u3066\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3044\u308b\u3002<code>script.rb<\/code> \u3068\u540c\u3058\u51e6\u7406\u3092\u3057\u3066\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3068\u3044\u3046\u3053\u3068\u306f\u5b9f\u969b\u306e\u5b9f\u884c\u6642\u306b\u306f\u30ab\u30f3\u30de\u306f\u8868\u308c\u3066\u3053\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u6c17\u306b\u3057\u306a\u3044\u3067\u3044\u3044\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u7d50\u679c\u3092\u3082\u3068\u306b\u9006\u5909\u63db\u3092\u3059\u308b\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u4f5c\u6210\u3002\u3082\u3046\u3061\u3087\u3063\u3068\u30b9\u30de\u30fc\u30c8\u306a\u66f8\u304d\u65b9\u306f\u306a\u3044\u3082\u306e\u304b\u3002<\/p>\n\n\n<div class=\"wp-block-syntaxhighlighter-code \"><pre class=\"brush: python; title: ; notranslate\" title=\"\">\nd = open(&quot;encryption&quot;, &quot;rb&quot;).read()\n\nfor i in range(int(len(d) \/ 6)):\n    s = i * 6\n    e = i * 6 + 6\n    if   d&#x5B;s:e] == b&#039;\\xee\\x81\\x9e\\xe5\\x9b\\x83&#039;:\n        print(&#039;&gt;&#039;, end = &quot;&quot;)\n    elif d&#x5B;s:e] == b&#039;\\xee\\x81\\x9e\\xe4\\xba\\x8a&#039;:\n        print(&#039;&lt;&#039;, end = &quot;&quot;)\n    elif d&#x5B;s:e] == b&#039;\\xee\\x81\\x9e\\xe4\\xb8\\x95&#039;:\n        print(&#039;+&#039;, end = &quot;&quot;)\n    elif d&#x5B;s:e] == b&#039;\\xee\\x81\\x9e\\xe5\\x89\\x8f&#039;:\n        print(&#039;-&#039;, end = &quot;&quot;)\n    elif d&#x5B;s:e] == b&#039;\\xee\\x81\\x9e\\xe7\\x8e\\x84&#039;:\n        print(&#039;.&#039;, end = &quot;&quot;)\n    elif d&#x5B;s:e] == b&#039;\\xee\\x81\\x9e\\xe4\\xb8\\xb6&#039;:\n        print(&#039;&#x5B;&#039;, end = &quot;&quot;)\n    elif d&#x5B;s:e] == b&#039;\\xee\\x81\\x9e\\xe7\\xb2\\x8b&#039;:\n        print(&#039;]&#039;, end = &quot;&quot;)\n    else:\n        print(&#039;,&#039;, end = &quot;&quot;)\n\nprint()\n<\/pre><\/div>\n\n\n<p>\u3053\u308c\u3092\u5b9f\u884c\u3057\u3066\u4ee5\u4e0b\u306e\u51fa\u529b\u3092\u5f97\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-36.png\"><img loading=\"lazy\" decoding=\"async\" width=\"658\" height=\"382\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-36.png\" alt=\"\" class=\"wp-image-1092\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-36.png 658w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-36-300x174.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-36-624x362.png 624w\" sizes=\"auto, (max-width: 658px) 100vw, 658px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u306f\u4f55\u304b\u3068\u3044\u3046\u3068 Brainf*ck \u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u3002\u4f7f\u308f\u308c\u3066\u3044\u308b\u8a18\u53f7\u306e\u6642\u70b9\u3067\u63a8\u6e2c\u3057\u3066\u3044\u305f\u3002Brainf*ck\u3067\u306e\u30ab\u30f3\u30de\u306f\u6a19\u6e96\u5165\u529b\u304b\u3089\u306e\u8aad\u307f\u8fbc\u307f\u3067\u3042\u308a\u4eca\u56de\u306e\u51e6\u7406\u3067\u306f\u8868\u308c\u3066\u304f\u308b\u3053\u3068\u306f\u306a\u3044\u306e\u3067\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u3082\u554f\u984c\u306f\u306a\u3044\u3068\u3044\u3046\u308f\u3051\u3067\u3042\u3063\u305f\u3002<br>\u624b\u5143\u306b\u51e6\u7406\u7cfb\u304c\u306a\u3044\u306e\u3067<a href=\"http:\/\/moon.kmc.gr.jp\/~prime\/brainf_ck\/env\/\" target=\"_blank\" rel=\"noopener\" title=\"\">\u30aa\u30f3\u30e9\u30a4\u30f3Brainf*ck\u30c7\u30d0\u30c3\u30ac<\/a>\u3092\u4f7f\u3063\u3066\u5b9f\u884c\u3002\u30d5\u30e9\u30b0\u3092\u5f97\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-37.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"882\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-37-1024x882.png\" alt=\"\" class=\"wp-image-1093\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-37-1024x882.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-37-300x258.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-37-768x661.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-37-624x537.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-37.png 1193w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{you_know_bra1n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">FR\u30ab\u30c6\u30b4\u30ea\uff08\u30d5\u30a9\u30ec\u30f3\u30b8\u30c3\u30af\u30fb\u30d0\u30a4\u30ca\u30ea\u89e3\u6790\uff09<\/h2>\n\n\n\n<p>\u3053\u3053\u307e\u3067\u66f8\u3044\u305f\u6642\u70b9\u3067\u554f\u984c\u30ea\u30b9\u30c8\u304c\u898b\u3089\u308c\u306a\u304f\u306a\u3063\u3066\u3057\u307e\u3063\u3066\u3044\u305f\u306e\u3067\u3053\u308c\u4ee5\u964d\u306f\u554f\u984c\u6587\u7121\u3057\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9732\u51fa\u7981\u6b62\uff01 [100pt, xx solves]<\/h3>\n\n\n\n<p>\u30ed\u30b0\u3092\u898b\u308b\u3068 <code>mypage.php<\/code> \u3078\u306e\u30a2\u30af\u30bb\u30b9\u306b\u30bb\u30c3\u30b7\u30e7\u30f3ID\u304c\u304f\u3063\u3064\u3044\u3066\u3044\u308b\u306e\u3067\u305d\u308c\u3092\u305d\u306e\u307e\u307e\u4f7f\u3063\u3066\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u308b\u3068\u3001\u6709\u52b9\u671f\u9650\u5207\u308c\u3068\u8a00\u308f\u308c\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-38.png\"><img loading=\"lazy\" decoding=\"async\" width=\"825\" height=\"481\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-38.png\" alt=\"\" class=\"wp-image-1094\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-38.png 825w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-38-300x175.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-38-768x448.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-38-624x364.png 624w\" sizes=\"auto, (max-width: 825px) 100vw, 825px\" \/><\/a><\/figure>\n\n\n\n<p>\u30bb\u30c3\u30b7\u30e7\u30f3ID\u306fBase64\u306b\u898b\u3048\u308b\u306e\u3067CyberChef\u3067\u30c7\u30b3\u30fc\u30c9\u3059\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-39.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1011\" height=\"469\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-39.png\" alt=\"\" class=\"wp-image-1095\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-39.png 1011w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-39-300x139.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-39-768x356.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-39-624x289.png 624w\" sizes=\"auto, (max-width: 1011px) 100vw, 1011px\" \/><\/a><\/figure>\n\n\n\n<p>\u30ab\u30f3\u30de\u3067\u533a\u5207\u3089\u308c\u305f3\u3064\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u30021\u756a\u76ee\u306fUNIX Timestamp\u3068\u601d\u308f\u308c\u308b\u30022\u756a\u76ee\u306f\u4e0d\u660e\u3002\u6700\u5f8c\u306f\u30e6\u30fc\u30b6\u540d\u3060\u308d\u3046\u30021\u756a\u76ee\u3092\u7406\u89e3\u3057\u3084\u3059\u3044\u65e5\u4ed8\u306b\u5909\u63db\u3057\u3066\u307f\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-40.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1011\" height=\"469\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-40.png\" alt=\"\" class=\"wp-image-1096\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-40.png 1011w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-40-300x139.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-40-768x356.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-40-624x289.png 624w\" sizes=\"auto, (max-width: 1011px) 100vw, 1011px\" \/><\/a><\/figure>\n\n\n\n<p>\u3053\u308c\u304c\u6050\u3089\u304f\u6709\u52b9\u671f\u9650\u3060\u3068\u601d\u308f\u308c\u308b\u306e\u3067\u3001\u672a\u6765\u306e\u65e5\u4ed8\u306b\u3057\u3066\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3092\u4f5c\u308a\u76f4\u3057\u3066\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u306a\u304b\u3063\u305f\u304c\u3001\u300c\u3053\u306e\u30e6\u30fc\u30b6\u306b\u306f\u30d5\u30e9\u30b0\u306f\u8868\u793a\u3055\u308c\u307e\u305b\u3093\u300d\u3068\u51fa\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-42.png\"><img loading=\"lazy\" decoding=\"async\" width=\"825\" height=\"481\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-42.png\" alt=\"\" class=\"wp-image-1098\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-42.png 825w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-42-300x175.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-42-768x448.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-42-624x364.png 624w\" sizes=\"auto, (max-width: 825px) 100vw, 825px\" \/><\/a><\/figure>\n\n\n\n<p>\u30e6\u30fc\u30b6\u540d\u3092admin\u306b\u3057\u3066\u307f\u3066\u3082\u30c0\u30e1\u3060\u3063\u305f\u3002\u30bb\u30c3\u30b7\u30e7\u30f3ID\u3092\u69cb\u6210\u3059\u308b3\u3064\u306e\u30d5\u30a3\u30fc\u30eb\u30c9\u306e\u3046\u3061\u306e2\u756a\u76ee\u306e\u6570\u5b57\u3092\u3044\u3058\u3063\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u3053\u308c\u30921\u306b\u3059\u308b\u3053\u3068\u3067\u30d5\u30e9\u30b0\u304c\u8868\u793a\u3055\u308c\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-43.png\"><img loading=\"lazy\" decoding=\"async\" width=\"825\" height=\"481\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-43.png\" alt=\"\" class=\"wp-image-1099\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-43.png 825w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-43-300x175.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-43-768x448.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-43-624x364.png 624w\" sizes=\"auto, (max-width: 825px) 100vw, 825px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{SessionIDsCarefully}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u6210\u529f\u306e\u8a3c [200pt, xx solves]<\/h3>\n\n\n\n<p>\u4e0e\u3048\u3089\u308c\u305fpcap\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u3066\u307f\u308b\u3068\u3001FTP\u901a\u4fe1\u304c\u898b\u3048\u308b\u306e\u3067ftp\u3067\u30d5\u30a3\u30eb\u30bf\u3092\u304b\u3051\u3066\u307f\u308b\u3068\u3001\u30ed\u30b0\u30a4\u30f3\u8a66\u884c\u3092\u7e70\u308a\u8fd4\u3057\u3066\u3044\u308b\u69d8\u5b50\u304c\u898b\u3048\u308b\u3002&#8221;Login incorrect.&#8221;\u3070\u304b\u308a\u306a\u306e\u3067&#8221;success&#8221;\u3067\u691c\u7d22\u3092\u3059\u308b\u3068&#8221;Login successful.&#8221;\u304c1\u3064\u3060\u3051\u898b\u3064\u304b\u308b\u3002\u540c\u3058\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u8907\u6570\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u304c\u52d5\u3044\u3066\u3044\u308b\u95a2\u4fc2\u3067\u3069\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u6b63\u89e3\u304b\u308f\u304b\u3089\u306a\u3044\u306e\u3067TCP\u30b9\u30c8\u30ea\u30fc\u30e0\u306e\u8ffd\u8de1\u3092\u884c\u3046\u3053\u3068\u3067\u305d\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5f97\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-44.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"646\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-44-1024x646.png\" alt=\"\" class=\"wp-image-1100\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-44-1024x646.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-44-300x189.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-44-768x485.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-44-624x394.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-44.png 1049w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-45.png\"><img loading=\"lazy\" decoding=\"async\" width=\"738\" height=\"580\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-45.png\" alt=\"\" class=\"wp-image-1101\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-45.png 738w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-45-300x236.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-45-624x490.png 624w\" sizes=\"auto, (max-width: 738px) 100vw, 738px\" \/><\/a><\/figure>\n<\/div>\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{zyyzzyzy}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">\u72af\u4eba\u306f\u3053\u306e\u4e2d\u306b\u3044\u308b\uff01 [200pt, xx solves]<\/h3>\n\n\n\n<p>\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u507d\u88c5\u3057\u3066\u3044\u305f\u3068\u3057\u3066\u3082\u3001MAC\u30a2\u30c9\u30ec\u30b9\u307e\u3067\u306f\u507d\u88c5\u3057\u3066\u3044\u306a\u3044\uff08\u306f\u305a\u3001\u3057\u3066\u3044\u308b\u3068\u554f\u984c\u306b\u306a\u3089\u306a\u3044\uff09\u3002\u30b0\u30ed\u30fc\u30d0\u30ebIP\u30a2\u30c9\u30ec\u30b9\u3092\u507d\u88c5\u3057\u3066\u3044\u308b\u30d1\u30b1\u30c3\u30c8\u304b\u3089Src\u306eMAC\u30a2\u30c9\u30ec\u30b9\u3092\u629c\u304d\u51fa\u3057\u3066\u305d\u306e\u30a2\u30c9\u30ec\u30b9\u3092\u4f7f\u3063\u3066\u30d5\u30a3\u30eb\u30bf\u3057\u3066\u3084\u308b\u3068\u3001\u540c\u3058MAC\u30a2\u30c9\u30ec\u30b9\u3092\u6301\u3064\u30ed\u30fc\u30ab\u30ebIP\u30a2\u30c9\u30ec\u30b9\u304c\u7279\u5b9a\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-46.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"646\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-46-1024x646.png\" alt=\"\" class=\"wp-image-1103\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-46-1024x646.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-46-300x189.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-46-768x485.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-46-624x394.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-46.png 1049w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-47.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"646\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-47-1024x646.png\" alt=\"\" class=\"wp-image-1104\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-47-1024x646.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-47-300x189.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-47-768x485.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-47-624x394.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-47.png 1049w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{192.168.204.137}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">chemistry [300pt, xx solves]<\/h3>\n\n\n\n<p>\u4f55\u5ea6\u304b <code>FR-4<\/code> \u3092\u5b9f\u884c\u3057\u3066\u3001\u3042\u308b\u6570\u5b57\u3092\u5165\u529b\u3057\u305f\u3068\u304d\u306e\u51fa\u529b\u306f\u56fa\u5b9a\u3067\u3001\u5358\u767a\u3067\u5b9f\u884c\u3057\u3088\u3046\u3068\u3082\u524d\u5f8c\u306b\u4ed6\u306e\u6570\u5b57\u304c\u3042\u308d\u3046\u3068\u3082\u5909\u308f\u3089\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u305f\u3002\u3067\u306f\u5bfe\u5fdc\u8868\u3092\u4f5c\u3063\u3066\u3084\u308c\u3070\u3088\u3044\u3001\u3068\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3057\u3066\u5bfe\u5fdc\u8868\u3092\u5f97\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-48.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"308\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-48-1024x308.png\" alt=\"\" class=\"wp-image-1105\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-48-1024x308.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-48-300x90.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-48-768x231.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-48-624x188.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-48.png 1090w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u51fa\u529b\u304c\u6b63\u3057\u304f\u8fd4\u3063\u3066\u304f\u308b\u306e\u306f118\u307e\u3067\u3060\u3063\u305f\u3002\u305d\u308c\u3060\u3051\u306a\u3089\u305d\u308c\u307b\u3069\u96e3\u3057\u3044\u3053\u3068\u306f\u306a\u3044\u306e\u3067\u3001\u51fa\u529b\u304c&#8221;FLAG I AM LUCKY&#8221;\u306b\u306a\u308b\u3088\u3046\u306a\u5165\u529b\u3092\u3001\u624b\u52d5\u3067\u30d1\u30ba\u30eb\u3092\u89e3\u3044\u3066\u6c42\u3081\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-49.png\"><img loading=\"lazy\" decoding=\"async\" width=\"738\" height=\"220\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-49.png\" alt=\"\" class=\"wp-image-1106\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-49.png 738w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-49-300x89.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-49-624x186.png 624w\" sizes=\"auto, (max-width: 738px) 100vw, 738px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{114,47,0,53,0,95,0,71,6,19,39}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">InSecureApk [300pt, xx solves]<\/h3>\n\n\n\n<p>APK\u306e\u30c7\u30b3\u30f3\u30d1\u30a4\u30eb\u306f<a href=\"https:\/\/github.com\/skylot\/jadx\" target=\"_blank\" rel=\"noopener\" title=\"\">jadx<\/a>\u3092\u4f7f\u3048\u3070\u7c21\u5358\u306b\u3067\u304d\u308b\u3002\u5c55\u958b\u3057\u3066\u30d5\u30a1\u30a4\u30eb\u3092\u53d6\u308a\u51fa\u3057\u3066\u306a\u3069\u306a\u3069\u3044\u308d\u3044\u308d\u3084\u3089\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u304b\u3063\u305f\u6614\u3068\u6bd4\u3079\u308b\u3068\u683c\u6bb5\u306b\u697d\u306b\u306a\u308a\u7533\u3057\u305f\u3002<\/p>\n\n\n\n<p><code>FR-5.apk<\/code> \u3092\u958b\u3044\u3066\u898b\u3066\u307f\u308b\u3068\u3001<code>MainActivity<\/code> \u5185\u3067\u5165\u529b\u306e\u30c1\u30a7\u30c3\u30af\u3092\u3057\u3066\u3044\u308b\u3002\u3053\u306e\u6bd4\u8f03\u6587\u5b57\u5217\u304c\u30d5\u30e9\u30b0\u304b\u3068\u601d\u3063\u305f\u3051\u3069\u305d\u3046\u3067\u306f\u306a\u304b\u3063\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-50.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1006\" height=\"902\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-50.png\" alt=\"\" class=\"wp-image-1107\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-50.png 1006w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-50-300x269.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-50-768x689.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-50-624x559.png 624w\" sizes=\"auto, (max-width: 1006px) 100vw, 1006px\" \/><\/a><\/figure>\n\n\n\n<p>\u6bd4\u8f03\u306e1\u884c\u4e0a\u3067 <code>SecretGenerator.deoce<\/code> \u3067\u5165\u529b\u6587\u5b57\u5217\u3092\u51e6\u7406\u3057\u3066\u3044\u308b\u3002\u3067\u306f\u3053\u306e\u51e6\u7406\u3092\u898b\u3066\u307f\u3088\u3046\u3068\u3059\u308b\u3082\u3001\u5b9f\u969b\u306b\u51e6\u7406\u3092\u3057\u3066\u3044\u308b <code>checkNative<\/code> \u306e\u5b9f\u88c5\u304c\u66f8\u304b\u308c\u3066\u3044\u306a\u3044\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-51.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1006\" height=\"902\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-51.png\" alt=\"\" class=\"wp-image-1109\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-51.png 1006w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-51-300x269.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-51-768x689.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-51-624x559.png 624w\" sizes=\"auto, (max-width: 1006px) 100vw, 1006px\" \/><\/a><\/figure>\n\n\n\n<p>\u305d\u306e\u4e0b\u306b <code>System.LoadLibrary(\"insecureapp\");<\/code> \u3068\u3042\u308b\u306e\u3067\u8abf\u3079\u3066\u307f\u308b\u3068\u3001Android\u30a2\u30d7\u30ea\u3067\u306f\u30cd\u30a4\u30c6\u30a3\u30d6\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u30ed\u30fc\u30c9\u3057\u3066\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u6a21\u69d8\u3002\u305d\u306e\u30e9\u30a4\u30d6\u30e9\u30ea\u306fAPK\u3092Zip\u3068\u3057\u3066\u5c55\u958b\u3057\u305f\u6642\u306e <code>lib<\/code> \u30d5\u30a9\u30eb\u30c0\u306b\u914d\u7f6e\u3055\u308c\u3066\u3044\u308b\u3002x86_64\u7528\u306e <code>libinsecureapp.so<\/code> \u3092IDA\u3067\u8aad\u307f\u8fbc\u3093\u3067\u307f\u308b\u3068Exports\u306b <code>checkNative<\/code> \u3092\u898b\u3064\u3051\u305f\u306e\u3067\u898b\u3066\u307f\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-52.png\"><img loading=\"lazy\" decoding=\"async\" width=\"542\" height=\"68\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-52.png\" alt=\"\" class=\"wp-image-1110\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-52.png 542w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-52-300x38.png 300w\" sizes=\"auto, (max-width: 542px) 100vw, 542px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>\u6700\u521d\u306e\u30d6\u30ed\u30c3\u30af\u306b\u6c17\u306b\u306a\u308b\u6587\u5b57\u5217\u3092\u767a\u898b\u3002\u3067\u3082\u3053\u308c\u306f\u30d5\u30e9\u30b0\u3067\u306f\u306a\u304b\u3063\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"466\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53-1024x466.png\" alt=\"\" class=\"wp-image-1111\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53-1024x466.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53-300x137.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53-768x350.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53-1536x699.png 1536w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53-624x284.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-53.png 1592w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>APK\u3067\u6bd4\u8f03\u3057\u3066\u305f\u6587\u5b57\u5217\u3068\u3053\u306e\u6587\u5b57\u5217\u3001\u3069\u3061\u3089\u308216\u6587\u5b57\u306a\u306e\u3067\u3001\u3058\u3083\u3042XOR\u3060\u308d\uff01\u3068\u96d1\u306b\u8003\u3048\u3066\u3084\u3063\u3066\u307f\u305f\u3089\u30d5\u30e9\u30b0\u304c\u51fa\u3066\u304d\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-54.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1011\" height=\"469\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-54.png\" alt=\"\" class=\"wp-image-1112\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-54.png 1011w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-54-300x139.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-54-768x356.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-54-624x289.png 624w\" sizes=\"auto, (max-width: 1011px) 100vw, 1011px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{AppNoGuard}<\/code><\/pre>\n\n\n\n<p>\u4e00\u5fdc\u30eb\u30fc\u30d7\u3057\u3066\u3044\u308b\u30b3\u30fc\u30c9\u306e\u4e2d\u306bXOR\u306f\u51fa\u3066\u304d\u3066\u3044\u305f\u306e\u3067\u6839\u6c17\u3088\u304f\u8aad\u3093\u3067\u3044\u3051\u3070\u6b63\u653b\u6cd5\u3067\u89e3\u3051\u305f\u304b\u3082\u3057\u308c\u306a\u3044\u304c\u3001XOR\u524d\u5f8c\u306ecall\u304c\u4f55\u3060\u304b\u4e0d\u660e\u3067\u3081\u3061\u3083\u304f\u3061\u3083\u6642\u9593\u304c\u304b\u304b\u3063\u3066\u3044\u305f\u3082\u306e\u3068\u601d\u308f\u308c\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-55.png\"><img loading=\"lazy\" decoding=\"async\" width=\"582\" height=\"512\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-55.png\" alt=\"\" class=\"wp-image-1113\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-55.png 582w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-55-300x264.png 300w\" sizes=\"auto, (max-width: 582px) 100vw, 582px\" \/><\/a><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\">PW\u30ab\u30c6\u30b4\u30ea\uff08PWN\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">CVE-2014-7169\u4ed6 [100pt, xx solves]<\/h3>\n\n\n\n<p>CVE-2024-7169\u306f<a href=\"https:\/\/ja.wikipedia.org\/wiki\/2014%E5%B9%B4%E3%82%B7%E3%82%A7%E3%83%AB%E3%82%B7%E3%83%A7%E3%83%83%E3%82%AF%E8%84%86%E5%BC%B1%E6%80%A7\" target=\"_blank\" rel=\"noopener\" title=\"\">ShellShock<\/a>\u3002\u4f7f\u3044\u3084\u3059\u3044\u304b\u3089\u6c17\u6301\u3061\u306f\u308f\u304b\u3089\u306a\u3044\u3067\u3082\u306a\u3044\u3051\u3069\u3001\u53e4\u3059\u304e\u307e\u305b\u3093\u304b\u3002<\/p>\n\n\n\n<p>\u4e0e\u3048\u3089\u308c\u305f\u30ed\u30b0\u30d5\u30a1\u30a4\u30eb\u3092\u898b\u308b\u3068\u3001User-Agent\u306bShellShock\u306eexploit\u3092\u57cb\u3081\u8fbc\u3093\u3067\u3044\u308b\u3002\u307e\u305f\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3088\u308a <code>n.cgi<\/code> \u3060\u3051\u304c\u5b58\u5728\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308b\u306e\u3067\u3053\u308c\u306b\u5bfe\u3057\u3066exploit\u3092\u6295\u3052\u3066\u3084\u308c\u3070\u3088\u3044\u3002<\/p>\n\n\n\n<p>\u3061\u306a\u307f\u306b\u3001<code>n.cgi<\/code> \u306b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068&#8221;shellshockable&#8221;\u3068\u6559\u3048\u3066\u304f\u308c\u308b\u3002\u89aa\u5207\u3002<\/p>\n\n\n\n<p>Firefox\u306e\u958b\u767a\u8005\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066User-Agent\u3092\u66f8\u304d\u63db\u3048\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u308b\u3053\u3068\u3067\u30d5\u30e9\u30b0\u3092\u53d6\u5f97\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-56.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"531\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-56-1024x531.png\" alt=\"\" class=\"wp-image-1114\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-56-1024x531.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-56-300x156.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-56-768x398.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-56-624x324.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-56.png 1184w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{&gt;:(!shellshock!}<\/code><\/pre>\n\n\n\n<p>\u554f\u984c\u540d\u306b\u3042\u308b\u300c\u4ed6\u300d\u306f\u4f55\u3060\u3063\u305f\u306e\u3060\u308d\u3046\uff1f<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a8d\u53ef\u306f\u8a8d\u8a3c\u306e\u5f8c [200pt, xx solves]<\/h3>\n\n\n\n<p>\u4e0e\u3048\u3089\u308c\u305fURL\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u30ed\u30b0\u30a4\u30f3\u753b\u9762\u304c\u51fa\u3066\u304f\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-57.png\"><img loading=\"lazy\" decoding=\"async\" width=\"975\" height=\"536\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-57.png\" alt=\"\" class=\"wp-image-1115\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-57.png 975w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-57-300x165.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-57-768x422.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-57-624x343.png 624w\" sizes=\"auto, (max-width: 975px) 100vw, 975px\" \/><\/a><\/figure>\n\n\n\n<p>\u30a2\u30ab\u30a6\u30f3\u30c8\u306b&#8221;12345678&#8243;\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u306b&#8221;password&#8221;\u3092\u5165\u308c\u3066\u9001\u4fe1\u3057\u305f\u969b\u306e\u901a\u4fe1\u3092Burp Suite\u3067\u898b\u3066\u307f\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-58.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"636\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-58-1024x636.png\" alt=\"\" class=\"wp-image-1116\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-58-1024x636.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-58-300x186.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-58-768x477.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-58-624x388.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-58.png 1249w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u30ed\u30b0\u30a4\u30f3\u30da\u30fc\u30b8\u306b\u306fJavaScript\u3067Validator\u304c\u3042\u3063\u3066\u3081\u3093\u3069\u3044\u306e\u3067Burp\u306eRepeater\u306b\u9001\u3063\u3066\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u3044\u3058\u3063\u3066\u307f\u308b\u3068\u3001<code>name<\/code> \u306e\u3068\u3053\u308d\u306bSQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u306e\u8106\u5f31\u6027\u304c\u3042\u308a\u305d\u3046\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-59.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"636\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-59-1024x636.png\" alt=\"\" class=\"wp-image-1117\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-59-1024x636.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-59-300x186.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-59-768x477.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-59-624x388.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-59.png 1249w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u5b9a\u756a\u306e\u30af\u30a8\u30ea\u3092\u5165\u308c\u3066\u307f\u308b\u3068\u3001\u4f55\u3084\u3089\u8a8d\u8a3c\u304c\u6210\u529f\u3057\u305f\u3088\u3046\u3067Cookie\u3067\u30bb\u30c3\u30b7\u30e7\u30f3ID\u304c\u8fd4\u3063\u3066\u304d\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-60.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"636\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-60-1024x636.png\" alt=\"\" class=\"wp-image-1118\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-60-1024x636.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-60-300x186.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-60-768x477.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-60-624x388.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-60.png 1249w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u51fa\u3066\u304d\u305fCookie\u3092\u30bb\u30c3\u30c8\u3057\u3066 <code>mypage.php<\/code> \u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u308b\u3002\u300c\u30d5\u30e9\u30b0\u3092\u8868\u793a\u300d\u30dc\u30bf\u30f3\u3092\u62bc\u3059\u3068\u7ba1\u7406\u8005\u3067\u306a\u3044\u3068\u30c0\u30e1\u3068\u51fa\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-61.png\"><img loading=\"lazy\" decoding=\"async\" width=\"833\" height=\"547\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-61.png\" alt=\"\" class=\"wp-image-1119\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-61.png 833w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-61-300x197.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-61-768x504.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-61-624x410.png 624w\" sizes=\"auto, (max-width: 833px) 100vw, 833px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-62.png\"><img loading=\"lazy\" decoding=\"async\" width=\"833\" height=\"547\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-62.png\" alt=\"\" class=\"wp-image-1120\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-62.png 833w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-62-300x197.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-62-768x504.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-62-624x410.png 624w\" sizes=\"auto, (max-width: 833px) 100vw, 833px\" \/><\/a><\/figure>\n\n\n\n<p><code>mypage.php<\/code> \u3092\u8868\u793a\u3057\u305f\u3068\u304d\u306e\u30bd\u30fc\u30b9\u3092\u898b\u3066\u307f\u308b\u3068\u3001\u300c\u30d5\u30e9\u30b0\u3092\u8868\u793a\u300d\u30dc\u30bf\u30f3\u3067\u306f <code>flag.php<\/code> \u306bPOST\u3057\u3066\u3044\u308b\u304c\u3001\u8ffd\u52a0\u306e\u30c7\u30fc\u30bf\u3068\u3057\u3066 <code>admin=0<\/code> \u3068\u3057\u3066\u3044\u308b\u3002\u3053\u308c\u3092 <code>admin=1<\/code> \u3068\u3057\u3066\u307f\u305f\u3068\u3053\u308d\u3001\u30d5\u30e9\u30b0\u304c\u8868\u793a\u3055\u308c\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-64.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"636\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-64-1024x636.png\" alt=\"\" class=\"wp-image-1122\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-64-1024x636.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-64-300x186.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-64-768x477.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-64-624x388.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-64.png 1249w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{DoNotUseParameter2Auth}<\/code><\/pre>\n\n\n\n<p>\u304a\u307e\u3051\u3002<code>sqlmap<\/code> \u3067\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u30c0\u30f3\u30d7\u3057\u3066\u307f\u305f\u3002\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u30c6\u30fc\u30d6\u30eb\u306f\u3053\u306e1\u3064\u3060\u3051\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-63.png\"><img loading=\"lazy\" decoding=\"async\" width=\"510\" height=\"177\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-63.png\" alt=\"\" class=\"wp-image-1123\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-63.png 510w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-63-300x104.png 300w\" sizes=\"auto, (max-width: 510px) 100vw, 510px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>\u7ba1\u7406\u8005\u30d5\u30e9\u30b0\u306f\u7121\u3057\u3002<code>secret<\/code> \u304c&#8221;No flag&#8221;\u3060\u3068\u7ba1\u7406\u8005\u3058\u3083\u306a\u3044\u5224\u5b9a\u306a\u306e\u304b\u3068\u601d\u3044\u9069\u5f53\u306a\u5024\u3092\u8a2d\u5b9a\u3057\u305f\u884c\u3092 <code>UNION SELECT<\/code> \u3067\u8ffd\u52a0\u3057\u3066\u3082\u30c0\u30e1\u3060\u3063\u305f\u3002\u3067\u3042\u308c\u3070\u3042\u306e <code>admin=0<\/code> \u306f\u3069\u3053\u304b\u3089\u6301\u3063\u3066\u304d\u3066\u3044\u308b\u3068\u3044\u3046\u306e\u304b\u3002\u3053\u3046\u3044\u3046\u7406\u4e0d\u5c3d\u3055\u306f\u7121\u304f\u3057\u3066\u307b\u3057\u304b\u3063\u305f\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">formerLogin [200pt, xx solves]<\/h3>\n\n\n\n<p>\u4e0e\u3048\u3089\u308c\u305fPowerPoint\u30d5\u30a1\u30a4\u30eb\u306f\u3053\u306e\u3088\u3046\u306a\u3082\u306e\u3002\u7279\u306b\u88cf\u306b\u96a0\u3055\u308c\u305f\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306a\u3069\u306f\u7121\u3057\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-65.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"692\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-65-1024x692.png\" alt=\"\" class=\"wp-image-1124\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-65-1024x692.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-65-300x203.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-65-768x519.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-65-624x422.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-65.png 1322w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>\u6307\u5b9a\u306eURL\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u3053\u308c\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-66.png\"><img loading=\"lazy\" decoding=\"async\" width=\"730\" height=\"438\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-66.png\" alt=\"\" class=\"wp-image-1125\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-66.png 730w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-66-300x180.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-66-624x374.png 624w\" sizes=\"auto, (max-width: 730px) 100vw, 730px\" \/><\/a><\/figure>\n\n\n\n<p>\u793e\u54e1ID\u3068\u6c0f\u540d\u3068\u3057\u3066\u30a4\u30cb\u30b7\u30e3\u30eb\u3092\u5165\u308c\u308c\u3070\u3044\u3044\u3089\u3057\u3044\u3002\u3057\u304b\u3057PowerPoint\u306b\u898b\u3048\u308b\u4eba\u7269\u306e\u3069\u308c\u3092\u898b\u3066\u3082\u30c0\u30e1\u3002\u5f53\u7136\u305d\u3093\u306a\u7c21\u5358\u306a\u308f\u3051\u304c\u306a\u3044\u3002<\/p>\n\n\n\n<p>\u3068\u3044\u3046\u308f\u3051\u3067PowerPoint\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u8eab\u3092\u898b\u3066\u307f\u308b\u3002PowerPoint\uff08\u3068\u3044\u3046\u304bOffice\uff09\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u5b9f\u4f53\u306fZip\u30d5\u30a1\u30a4\u30eb\u306a\u306e\u3067\u5c55\u958b\u3057\u3066\u307f\u308b\u3002\u3059\u308b\u3068 <code>docProps\/core.xml<\/code> \u306b\u65b0\u305f\u306a\u4eba\u540d <code>ytanaka<\/code> \u3068 <code>htahakashi<\/code> \u3092\u898b\u3064\u3051\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-67.png\"><img loading=\"lazy\" decoding=\"async\" width=\"798\" height=\"498\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-67.png\" alt=\"\" class=\"wp-image-1126\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-67.png 798w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-67-300x187.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-67-768x479.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-67-624x389.png 624w\" sizes=\"auto, (max-width: 798px) 100vw, 798px\" \/><\/a><\/figure>\n\n\n\n<p>\u307e\u305f\u3001<code>ppt\/slides\/slide1.xml<\/code> \u306b\u306f <code>TGT260<\/code> \u3068\u3044\u3046\u793e\u54e1ID\u3092\u898b\u3064\u3051\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-68.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1020\" height=\"680\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-68.png\" alt=\"\" class=\"wp-image-1127\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-68.png 1020w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-68-300x200.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-68-768x512.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-68-624x416.png 624w\" sizes=\"auto, (max-width: 1020px) 100vw, 1020px\" \/><\/a><\/figure>\n\n\n\n<p><code>ytanaka<\/code> \u306e <code>y<\/code> \u3068 <code>htahakashi<\/code> \u306e <code>h<\/code> \u306f\u3044\u305a\u308c\u3082\u540d\u524d\u306e\u982d\u6587\u5b57\u3060\u308d\u3046\u3068\u63a8\u6e2c\u3057\u3066\u793e\u54e1ID <code>TGT260<\/code> \u306b\u5bfe\u5fdc\u3059\u308b\u30a4\u30cb\u30b7\u30e3\u30eb\u3068\u3057\u3066\u5165\u308c\u3066\u307f\u3066\u3082\u30c0\u30e1\u3002<\/p>\n\n\n\n<p>\u305d\u3082\u305d\u3082\u30a4\u30cb\u30b7\u30e3\u30eb\u306e\u8868\u8a18\u306b\u306f\u8907\u6570\u3042\u308b\u3002\u59d3\u3068\u540d\u306e\u3069\u3061\u3089\u3092\u5148\u306b\u3059\u308b\u304b\u3001\u30d4\u30ea\u30aa\u30c9\u306f\u3064\u3051\u308b\u304b\u3001\u59d3\u540d\u306e\u9593\u306b\u30b9\u30da\u30fc\u30b9\u3092\u3044\u308c\u308b\u304b\u3067\u5358\u7d14\u306b\u4e00\u4eba\u3042\u305f\u308a8\u30d1\u30bf\u30fc\u30f3\u3042\u308b\u3002<br>\u793e\u54e1ID\u3082 <code>TGT260<\/code> \u304c\u6b63\u89e3\u3068\u3082\u9650\u3089\u306a\u3044\u306e\u3067\u3001<code>TGT000<\/code> \uff5e <code>TGT999<\/code> \u307e\u3067\u3042\u308a\u5f97\u308b\u3002<br>\u5168\u30d1\u30bf\u30fc\u30f3\u3092\u4f5c\u6210\u3057\u3066 <code>ffuf<\/code> \u3067Brute force\u3059\u308b\u3082\u6210\u529f\u305b\u305a\u3002<br>\u30a4\u30cb\u30b7\u30e3\u30eb\u3068\u306f\u66f8\u3044\u3066\u3042\u308b\u3082\u306e\u306e\u9055\u3046\u304b\u3082\u3068\u601d\u3063\u3066 <code>ytanaka<\/code> \u5f62\u5f0f\u306e\u6c0f\u540d\u3082\u8a66\u3057\u3066\u307f\u305f\u304c\u3084\u306f\u308a\u30c0\u30e1\u3002<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u3001\u305a\u3063\u3068\u982d\u306b\u3072\u3063\u304b\u304b\u3063\u3066\u3044\u305f <code>hta<\/code><font color=\"red\"><code>ha<\/code><\/font><code>kashi<\/code> \u3092 <code>hta<\/code><font color=\"red\"><code>ka<\/code><\/font><code>hashi<\/code> \u306b\u3057\u3066\u307f\u305f\u3068\u3053\u308d\u3001<code>TGT260<\/code> \u3068\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u901a\u3063\u305f\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u304c\u6700\u5f8c\u306e1\u554f\u3060\u3063\u305f\u306e\u3067\u3088\u3063\u3057\u3083\uff01\u3068\u3044\u3046\u6c17\u6301\u3061\u3068\u3001\u3075\u3056\u3051\u3093\u306a\uff01\u3068\u3044\u3046\u6c17\u6301\u3061\u304c\u6ea2\u308c\u305f\u3002\u30a4\u30cb\u30b7\u30e3\u30eb\u3058\u3083\u306a\u3044\u4e0a\u306b\u81ea\u5206\u306e\u540d\u524dtypo\u3057\u3066\u3093\u306e\u304b\u3088\u3002\u3053\u306e\u554f\u984c\u306f\u4eca\u56de\u968f\u4e00\u306e\u30af\u30bd\u554f\u3068\u3057\u3066\u30de\u30fc\u30af\u3055\u308c\u305f\u3002\u6b21\u70b9\u306f\u300c\u8a8d\u53ef\u306f\u8a8d\u8a3c\u306e\u5f8c\u3067\u300d\u3002\u3069\u3063\u3061\u3082PW\u30ab\u30c6\u30b4\u30ea\u304b\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: \u30e1\u30e2\u3057\u5fd8\u308c\u305f<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">overmeow [200pt, xx solves]<\/h3>\n\n\n\n<p>\u30d7\u30ed\u30b0\u30e9\u30e0 <code>overmeow<\/code> \u304c\u6e21\u3055\u308c <code>nc<\/code> \u3067\u306e\u63a5\u7d9a\u5148\u3082\u4e0e\u3048\u3089\u308c\u308b\u3002\u8106\u5f31\u6027\u3092\u898b\u3064\u3051\u3066Exploit\u3057\u308d\u3068\u3044\u3046\u3053\u3068\u3060\u3002<code>overmeow<\/code> \u3092IDA\u3067\u898b\u3066\u307f\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-69.png\"><img loading=\"lazy\" decoding=\"async\" width=\"858\" height=\"1024\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-69.png\" alt=\"\" class=\"wp-image-1129\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-69.png 858w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-69-251x300.png 251w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-69-768x917.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-69-624x745.png 624w\" sizes=\"auto, (max-width: 858px) 100vw, 858px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p><code>_gets<\/code> \u306e\u5165\u529b\u5148\u306e\u30d0\u30c3\u30d5\u30a1\u306f <code>var_20<\/code> \u3067 <code>'mdow'<\/code> \u3068\u6bd4\u8f03\u3057\u3066\u3044\u308b\u306e\u306f <code>var_8<\/code> \u300224\u30d0\u30a4\u30c8\u9069\u5f53\u306a\u5024\u3092\u5165\u308c\u3066\u304b\u3089 <code>'mdow'<\/code> \u3092\u5165\u308c\u308c\u3070\u3088\u3044\u3002\u30a8\u30f3\u30c7\u30a3\u30a2\u30f3\u306b\u6c17\u3092\u4ed8\u3051\u3066\u5165\u529b\u3059\u308b\u3068\u30d5\u30e9\u30b0\u304c\u8fd4\u3063\u3066\u304d\u305f\u3002\uff08\u753b\u50cf\u306epwd\u304c\u304a\u304b\u3057\u3044\u304c\u6c17\u306b\u3059\u308b\u306a\uff09<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-70.png\"><img loading=\"lazy\" decoding=\"async\" width=\"882\" height=\"238\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-70.png\" alt=\"\" class=\"wp-image-1131\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-70.png 882w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-70-300x81.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-70-768x207.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-70-624x168.png 624w\" sizes=\"auto, (max-width: 882px) 100vw, 882px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{I_will_Golondon}<\/code><\/pre>\n\n\n\n<h3 class=\"wp-block-heading\">heapmeow [300pt, xx solves]<\/h3>\n\n\n\n<p>\u4eca\u5ea6\u306f\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u304c\u4e0e\u3048\u3089\u308c\u308b\u3002<code>2. Allocate Cat<\/code> \u3059\u308b\u3068\u9cf4\u304d\u58f0\u3092\u805e\u3044\u3066\u304f\u308b\u304f\u305b\u306b <code>says<\/code> \u30e1\u30f3\u30d0\u306b\u66f8\u304d\u8fbc\u307e\u306a\u3044\u4e0d\u601d\u8b70\u5b9f\u88c5\u3002<\/p>\n\n\n\n<p>\u521d\u671f\u72b6\u614b\u30671\u3064 <code>Cat<\/code> \u304callocate\u3055\u308c\u305f\u72b6\u614b\u3060\u304c\u3001 <code>4. Free cat<\/code> \u3057\u305f\u5f8c\u306b <code>2. Allocate Cat<\/code> \u3059\u308b\u3068Free\u3057\u305f\u306e\u3068\u540c\u3058\u30a2\u30c9\u30ec\u30b9\u306b\u78ba\u4fdd\u3055\u308c\u308b\u3088\u3046\u3067\u300124\u30d0\u30a4\u30c8\u9069\u5f53\u306a\u5024\u306e\u5f8c\u306b <code>meow<\/code> \u3092\u5165\u308c\u308b\u3068\u6761\u4ef6\u3092\u6e80\u305f\u3057\u3066\u30d5\u30e9\u30b0\u304c\u5f97\u3089\u308c\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/71d7cd8e51967c17760155683b8b3833.png\"><img loading=\"lazy\" decoding=\"async\" width=\"995\" height=\"544\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/71d7cd8e51967c17760155683b8b3833.png\" alt=\"\" class=\"wp-image-1133\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/71d7cd8e51967c17760155683b8b3833.png 995w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/71d7cd8e51967c17760155683b8b3833-300x164.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/71d7cd8e51967c17760155683b8b3833-768x420.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/71d7cd8e51967c17760155683b8b3833-624x341.png 624w\" sizes=\"auto, (max-width: 995px) 100vw, 995px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{cat_g0es_me0w}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">TR\u30ab\u30c6\u30b4\u30ea\uff08\u305d\u306e\u4ed6\u30fb\u30c8\u30ea\u30d3\u30a2\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5408\u4f53\u306f\u30ed\u30de\u30f3 [100pt, xx solves]<\/h3>\n\n\n\n<p>4\u3064\u306b\u5206\u5272\u3055\u308c\u305fQR\u30b3\u30fc\u30c9\u306e\u753b\u50cf\u304c\u6e21\u3055\u308c\u308b\u3002\u4ee5\u4e0b\u306e\u753b\u50cf\u306f5\u500d\u306b\u62e1\u5927\u3057\u305f\u3082\u306e\u3002<\/p>\n\n\n\n<figure class=\"wp-block-gallery aligncenter has-nested-images columns-4 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-71.png\"><img loading=\"lazy\" decoding=\"async\" width=\"385\" height=\"395\" data-id=\"1134\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-71.png\" alt=\"\" class=\"wp-image-1134\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-71.png 385w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-71-292x300.png 292w\" sizes=\"auto, (max-width: 385px) 100vw, 385px\" \/><\/a><figcaption class=\"wp-element-caption\">TR-1_1<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-72.png\"><img loading=\"lazy\" decoding=\"async\" width=\"395\" height=\"385\" data-id=\"1135\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-72.png\" alt=\"\" class=\"wp-image-1135\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-72.png 395w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-72-300x292.png 300w\" sizes=\"auto, (max-width: 395px) 100vw, 395px\" \/><\/a><figcaption class=\"wp-element-caption\">TR-1_2<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-73.png\"><img loading=\"lazy\" decoding=\"async\" width=\"385\" height=\"390\" data-id=\"1136\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-73.png\" alt=\"\" class=\"wp-image-1136\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-73.png 385w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-73-296x300.png 296w\" sizes=\"auto, (max-width: 385px) 100vw, 385px\" \/><\/a><figcaption class=\"wp-element-caption\">TR-1_3<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-style-default\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-74.png\"><img loading=\"lazy\" decoding=\"async\" width=\"385\" height=\"410\" data-id=\"1137\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-74.png\" alt=\"\" class=\"wp-image-1137\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-74.png 385w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-74-282x300.png 282w\" sizes=\"auto, (max-width: 385px) 100vw, 385px\" \/><\/a><figcaption class=\"wp-element-caption\">TR-1_4<\/figcaption><\/figure>\n<\/figure>\n\n\n\n<p>QR\u30b3\u30fc\u30c9\u306e\u57fa\u672c\u306b\u3064\u3044\u3066\u306f<a href=\"https:\/\/www.keyence.co.jp\/ss\/products\/autoid\/codereader\/basic2d_qr.jsp\" target=\"_blank\" rel=\"noopener\" title=\"QR\u30b3\u30fc\u30c9\u306e\u3057\u304f\u307f | \u30d0\u30fc\u30b3\u30fc\u30c9\u8b1b\u5ea7 | \u30ad\u30fc\u30a8\u30f3\u30b9\">QR\u30b3\u30fc\u30c9\u306e\u3057\u304f\u307f | \u30d0\u30fc\u30b3\u30fc\u30c9\u8b1b\u5ea7 | \u30ad\u30fc\u30a8\u30f3\u30b9<\/a>\u3092\u53c2\u7167\u3002<\/p>\n\n\n\n<p>QR\u30b3\u30fc\u30c9\u306b\u306f\u767d\u304b\u9ed2\u304b\u304c\u78ba\u5b9f\u306b\u6c7a\u307e\u3063\u3066\u3044\u308b\u9818\u57df\u304c\u3042\u308b\u3002\u5de6\u4e0a\u30fb\u53f3\u4e0a\u30fb\u5de6\u4e0b\u306b\u3042\u308b\u30d5\u30a1\u30a4\u30f3\u30c0\u30d1\u30bf\u30fc\u30f3\u3001\u53f3\u4e0b\u306b\u3042\u308b\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u30d1\u30bf\u30fc\u30f3\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u30d1\u30bf\u30fc\u30f3\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p>\u30a2\u30e9\u30a4\u30e1\u30f3\u30c8\u30d1\u30bf\u30fc\u30f3\u304c\u3042\u308b\u306e\u306f <code>TR-1_3<\/code> \u306e\u307f\u306a\u306e\u3067\u3001<code>TR-1_3<\/code> \u304c\u53f3\u4e0b\u90e8\u5206\u306a\u306e\u306f\u78ba\u5b9a\u3002\u767d\u9ed2\u304c\u53cd\u8ee2\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\u3002\u4ed6\u306e3\u3064\u306f\u767d\u304c\u80cc\u666f\u8272\u3060\u304c\u3053\u308c\u3060\u3051\u306f\u9ed2\u304c\u80cc\u666f\u8272\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u307e\u305f\u3001\u30bf\u30a4\u30df\u30f3\u30b0\u30d1\u30bf\u30fc\u30f3\u304c\u30d5\u30a1\u30a4\u30f3\u30c0\u30d1\u30bf\u30fc\u30f3\u304b\u30892\u65b9\u5411\u306b\u51fa\u3066\u3044\u308b\u306e\u306f <code>TR-1_4<\/code> \u306e\u307f\u306a\u306e\u3067\u3001\u3053\u308c\u304c\u5de6\u4e0a\u90e8\u5206\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u5b9a\u3059\u308b\u3002\u30bf\u30a4\u30df\u30f3\u30b0\u30d1\u30bf\u30fc\u30f3\u306e\u6b8b\u308a\u306e\u90e8\u5206\u306b\u76f8\u5f53\u3059\u308b\u7b87\u6240\u306f <code>TR-1_1<\/code> \u3068 <code>TR-1_2<\/code> \u306e\u3069\u3061\u3089\u306b\u3082\u3042\u308b\u3002<\/p>\n\n\n\n<p>4\u3064\u306e\u30d1\u30fc\u30c4\u3092\u672c\u6765\u306eQR\u30b3\u30fc\u30c9\u306e\u4f4d\u7f6e\u306b\u914d\u7f6e\u3059\u308b\u305f\u3081\u306b\u306f\u56de\u8ee2\u3084\u53cd\u8ee2\u306e\u64cd\u4f5c\u304c\u5fc5\u8981\u306b\u306a\u308b\u3002\u307e\u305a\u306f\u53cd\u8ee2\u306e\u53ef\u80fd\u6027\u3092\u8003\u3048\u305a\u3001\u56de\u8ee2\u3060\u3051\u3067\u914d\u7f6e\u3092\u8a66\u307f\u308b\u3068\u3001<code>TR-1_1<\/code> \u304c\u5de6\u4e0b\u90e8\u5206\u3001<code>TR-1_2<\/code> \u304c\u53f3\u4e0a\u90e8\u5206\u3068\u306a\u308b\u3002\u3053\u306e\u914d\u7f6e\u30674\u30d1\u30fc\u30c4\u306e\u7d50\u5408\u3092\u8a66\u307f\u305f\u3068\u3053\u308d\u3001\u4e0d\u6574\u5408\u306a\u304f\u7dba\u9e97\u306b\u30d1\u30fc\u30c4\u304c\u4e00\u90e8\u91cd\u306a\u308a\u3064\u3064QR\u30b3\u30fc\u30c9\u304c\u5b8c\u6210\u3055\u308c\u305f\u3002\u3053\u308c\u3092\u8aad\u307f\u53d6\u308b\u3068\u3001<code>ThisCodeIsLevelH<\/code> \u3068\u51fa\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-75.png\"><img loading=\"lazy\" decoding=\"async\" width=\"290\" height=\"290\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-75.png\" alt=\"\" class=\"wp-image-1141\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-75.png 290w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-75-150x150.png 150w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-75-144x144.png 144w\" sizes=\"auto, (max-width: 290px) 100vw, 290px\" \/><\/a><figcaption class=\"wp-element-caption\">\u7d50\u5408\u3057\u3066\u3067\u304d\u305fQR\u30b3\u30fc\u30c9<\/figcaption><\/figure>\n<\/div>\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{ThisCodeIsLevelH}<\/code><\/pre>\n\n\n\n<p>\u4f59\u8ac7\u3002<code>TR-1_3<\/code> \u4ee5\u5916\u306e3\u3064\u306f\u3001\u30bb\u30eb\u306e\u8272\u304c\u5358\u8272\u3067\u306f\u306a\u304f\u540c\u7cfb\u7d71\u306e\u8272\u8907\u6570\u306b\u3088\u308b\u307e\u3060\u3089\u6a21\u69d8\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u30bb\u30eb\u306e\u8272\u3092\u5909\u3048\u308b\u3060\u3051\u306a\u30894\u30d1\u30fc\u30c4\u306e\u8b58\u5225\u3092\u3057\u3084\u3059\u304f\u3059\u308b\u305f\u3081\u306b\u3042\u308a\u3060\u3068\u601d\u3046\u306e\u3060\u304c\u3001\u8907\u6570\u8272\u4f7f\u3063\u3066\u3044\u308b\u306e\u306f\u5358\u7d14\u306a\u8272\u306e\u7f6e\u304d\u63db\u3048\u304c\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u304c\u76ee\u7684\u306a\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u52d8\u7e70\u3063\u3066\u3057\u307e\u3046\u3002\u305d\u3093\u306a\u306e\u3053\u306e\u554f\u984c\u306e\u672c\u8cea\u7684\u306a\u30dd\u30a4\u30f3\u30c8\u3058\u3083\u306a\u3044\u3093\u3060\u304b\u3089\u308f\u3056\u308f\u3056\u51e6\u7406\u3057\u306b\u304f\u304f\u3059\u308b\u5fc5\u8981\u306a\u3044\u3060\u308d\u3068\u3002\u3053\u3046\u3044\u3046\u306e\u306f\u5acc\u3044\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Windows\u3067\u89e3\u304d\u307e\u3057\u3087\u3046 [200pt, xx solves]<\/h3>\n\n\n\n<p>\u4e0e\u3048\u3089\u308c\u305f\u30d0\u30c3\u30c1\u30d5\u30a1\u30a4\u30eb\u3092\u4e2d\u8eab\u3092\u898b\u305a\u306b\u5b9f\u884c\u3059\u308b\u3068\u300190\u500b\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u4f5c\u6210\u3055\u308c\u305f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-76.png\"><img loading=\"lazy\" decoding=\"async\" width=\"995\" height=\"598\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-76.png\" alt=\"\" class=\"wp-image-1142\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-76.png 995w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-76-300x180.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-76-768x462.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-76-624x375.png 624w\" sizes=\"auto, (max-width: 995px) 100vw, 995px\" \/><\/a><\/figure>\n\n\n\n<p>\u3069\u308c\u304c\u6b63\u89e3\u306e\u30d5\u30e9\u30b0\u304b\u3002\u300cWindows\u3067\u300d\u3068\u8a00\u3063\u3066\u3044\u308b\u306e\u3060\u304b\u3089Windows\u56fa\u6709\u306e\u4f55\u304b\u3092\u4f7f\u3063\u3066\u3044\u308b\u306f\u305a\u3002\u30d5\u30a1\u30a4\u30eb\u95a2\u9023\u3067Windows\uff08\u3068\u3044\u3046\u304bNTFS\uff09\u56fa\u6709\u3068\u8a00\u3048\u3070\u4ee3\u66ff\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0(ADS, Alternative Data Stream)\u3002<code>dir<\/code> \u30b3\u30de\u30f3\u30c9\u3060\u3068 <code>\/r<\/code> \u30b9\u30a4\u30c3\u30c1\u3067\u78ba\u8a8d\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-77.png\"><img loading=\"lazy\" decoding=\"async\" width=\"995\" height=\"598\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-77.png\" alt=\"\" class=\"wp-image-1143\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-77.png 995w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-77-300x180.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-77-768x462.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-77-624x375.png 624w\" sizes=\"auto, (max-width: 995px) 100vw, 995px\" \/><\/a><\/figure>\n\n\n\n<p><code>flags_25.txt<\/code> \u304c&#8221;TrueFlag&#8221;\u3089\u3057\u3044\u306e\u3067\u3053\u306e\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u8eab\u304c\u6b63\u3057\u3044\u30d5\u30e9\u30b0\u3068\u308f\u304b\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-78.png\"><img loading=\"lazy\" decoding=\"async\" width=\"995\" height=\"148\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-78.png\" alt=\"\" class=\"wp-image-1144\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-78.png 995w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-78-300x45.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-78-768x114.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-78-624x93.png 624w\" sizes=\"auto, (max-width: 995px) 100vw, 995px\" \/><\/a><\/figure>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{7525252364612534937244}<\/code><\/pre>\n\n\n\n<p>\u5225\u89e3\u3002ADS\u3068\u304b\u77e5\u3089\u306a\u304f\u3066\u3082\u30d0\u30c3\u30c1\u30d5\u30a1\u30a4\u30eb\u306e\u4e2d\u8eab\u3092\u898b\u308c\u3070 <code>flags_25.txt<\/code> \u306b\u3060\u3051\u4f55\u304b\u7279\u5225\u306a\u3053\u3068\u3092\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308b\u3002VHDX\u3092\u914d\u308b\u3068\u304b\u3001\u3082\u3046\u3061\u3087\u3063\u3068\u306a\u3093\u3068\u304b\u306a\u3089\u306a\u304b\u3063\u305f\u306e\u304b\u306a\u2026<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-79.png\"><img loading=\"lazy\" decoding=\"async\" width=\"908\" height=\"514\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-79.png\" alt=\"\" class=\"wp-image-1145\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-79.png 908w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-79-300x170.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-79-768x435.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-79-624x353.png 624w\" sizes=\"auto, (max-width: 908px) 100vw, 908px\" \/><\/a><\/figure>\n\n\n\n<p>\u3068\u3053\u308d\u3067\u3001<code>flags_25.txt:TrueFlag<\/code> \u306b\u306f\u4f55\u306e\u30c7\u30fc\u30bf\u3082\u66f8\u304d\u8fbc\u307e\u308c\u3066\u3044\u306a\u3044\u3093\u3060\u3051\u3069\u3001<code>dir \/r<\/code> \u306e\u7d50\u679c\u3067\u306f\u30b5\u30a4\u30ba\u304c22\u306b\u306a\u3063\u3066\u308b\u3002\u3053\u308c\u306f\u4f55\u3067\u3060\u308d\u3046\uff1f<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6392\u4ed6\u7684\u8ad6\u7406\u548c [300pt, xx solves]<\/h3>\n\n\n\n<p>3\u3064\u306e\u30d5\u30a1\u30a4\u30eb\u3068\u6bd4\u8f03\u5bfe\u8c61\u306e\u30d5\u30a1\u30a4\u30eb\u304c\u4e0e\u3048\u3089\u308c\u308b\u3002\u30d5\u30a1\u30a4\u30eb\u30b5\u30a4\u30ba\u306f\u5168\u90e810\u30d0\u30a4\u30c8\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-80.png\"><img loading=\"lazy\" decoding=\"async\" width=\"618\" height=\"400\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-80.png\" alt=\"\" class=\"wp-image-1146\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-80.png 618w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-80-300x194.png 300w\" sizes=\"auto, (max-width: 618px) 100vw, 618px\" \/><\/a><\/figure>\n<\/div>\n\n\n<p>XOR\u3092\u53d6\u3063\u3066\u307f\u308b\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-81.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"455\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-81-1024x455.png\" alt=\"\" class=\"wp-image-1147\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-81-1024x455.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-81-300x133.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-81-768x341.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-81-624x277.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-81.png 1325w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-82.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"455\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-82-1024x455.png\" alt=\"\" class=\"wp-image-1148\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-82-1024x455.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-82-300x133.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-82-768x341.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-82-624x277.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-82.png 1325w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-83.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"455\" src=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-83-1024x455.png\" alt=\"\" class=\"wp-image-1149\" srcset=\"https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-83-1024x455.png 1024w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-83-300x133.png 300w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-83-768x341.png 768w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-83-624x277.png 624w, https:\/\/emeth.jp\/diary\/wp-content\/uploads\/2025\/02\/image-83.png 1325w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p><code>pattern3<\/code> \u306e\u6642\u3060\u3051\u30d5\u30e9\u30b0\u306e\u5f62\u5f0f\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u30ab\u30c3\u30b3\u5185\u306f4\u30d0\u30a4\u30c8\u306e\u30c7\u30fc\u30bf\u3067ASCII\u3067\u306f\u306a\u3044\u304c\u3001IP\u30a2\u30c9\u30ec\u30b9\u3092\u56de\u7b54\u3057\u308d\u3068\u3044\u3046\u3053\u3068\u3060\u3063\u305f\u306e\u3067\u3053\u306e4\u30d0\u30a4\u30c8(<code>ac<\/code>, <code>1d<\/code>, <code>ef<\/code>, <code>fd<\/code>)\u3092IPv4\u30a2\u30c9\u30ec\u30b9\u306e\u8868\u8a18\u306b\u3059\u308b\u3068\u30d5\u30e9\u30b0\u306b\u306a\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Flag: flag{172.29.239.253}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u304a\u308f\u308a\u306b<\/h2>\n\n\n\n<p>\u554f\u984c\u6570\u304c\u591a\u304b\u3063\u305f\u306e\u3067\u9577\u304f\u306a\u3063\u305f\u3002\u6700\u521d\u306b\u3082\u66f8\u3044\u305f\u304c\u96e3\u6613\u5ea6\u306f\u4f4e\u3081\u3067CTF\u3092\u3084\u3063\u3066\u307f\u3088\u3046\u3068\u3044\u3046\u4eba\u306e\u30b9\u30c6\u30c3\u30d7\u30a2\u30c3\u30d7\u306b\u3061\u3087\u3046\u3069\u3044\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3046\u3002\u4e00\u65b9\u3067\u8cea\u306e\u60aa\u3044\u554f\u984c\u3082\u3042\u3063\u305f\u304c\u300130\u554f\u4e2d1,2\u554f\u3067\u3042\u308c\u3070\u8a31\u5bb9\u7bc4\u56f2\u304b\u3002\u3042\u3068\u8106\u5f31\u6027\u306b\u95a2\u3059\u308b\u554f\u984c\u304c\u3042\u308b\u306e\u306f\u3044\u3044\u3093\u3060\u3051\u3069\u3001\u3061\u3087\u3063\u3068\u53e4\u3059\u304e\u3002\u4f7f\u3044\u3084\u3059\u3044\u306e\u306f\u308f\u304b\u308b\u304c\u3002<\/p>\n\n\n\n<p>\u904b\u55b6\u306e\u59ff\u52e2\u306b\u306f\u7591\u554f\u304c\u6b8b\u3063\u305f\u3002\u5f53\u521d\u306e\u52df\u96c6\u6bb5\u968e\u3067\u306f\u7981\u6b62\u4e8b\u9805\u306b\u5165\u3063\u3066\u3044\u306a\u304b\u3063\u305fWriteup\u306e\u516c\u958b\u3092\u7981\u6b62\u3059\u308b\u3088\u3046\u306a\u30eb\u30fc\u30eb\u3092\u901a\u77e5\u3057\u305f\u308a\uff08\u3053\u308c\u306f\u64a4\u56de\u3055\u308c\u305f\uff09\u3001\u30a2\u30f3\u30b1\u30fc\u30c8\u306e\u6709\u52b9\u671f\u9650\u304c\u7af6\u6280\u7d42\u4e861\u6642\u9593\u5f8c\u306e22\u6642\u307e\u3067\u3060\u3063\u305f\u308a\u3002\u7fcc6\u6642\u307e\u3067\u3068\u304b\u3067\u3082\u3044\u3044\u3082\u306e\u30921\u6642\u9593\u3057\u304b\u7336\u4e88\u4e0e\u3048\u3066\u3044\u306a\u3044\u306e\u306f\u305d\u3093\u306a\u306b\u30a2\u30f3\u30b1\u30fc\u30c8\u306b\u56de\u7b54\u3055\u308c\u305f\u304f\u306a\u3044\u306e\u304b\u3001\u3068\u601d\u3063\u3066\u3057\u307e\u3046\u3002<\/p>\n\n\n\n<p>\u3068\u3082\u3042\u308c\u3001\u305f\u304f\u3055\u3093\u89e3\u3051\u308b\u30b3\u30f3\u30c6\u30b9\u30c8\u306f\u697d\u3057\u3044\u3002\u6765\u5e74\u3082\u3042\u308b\u3053\u3068\u3092\u671f\u5f85\u3057\u305f\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9632\u885b\u7701\u30b5\u30a4\u30d0\u30fc\u30b3\u30f3\u30c6\u30b9\u30c82025\u306ewriteup<\/p>\n","protected":false},"author":1,"featured_media":1053,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"cybocfi_hide_featured_image":"","footnotes":""},"categories":[14],"tags":[8],"class_list":["post-1052","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ctf","tag-ctf"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/posts\/1052","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/comments?post=1052"}],"version-history":[{"count":11,"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/posts\/1052\/revisions"}],"predecessor-version":[{"id":1158,"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/posts\/1052\/revisions\/1158"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/media\/1053"}],"wp:attachment":[{"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/media?parent=1052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/categories?post=1052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/emeth.jp\/diary\/wp-json\/wp\/v2\/tags?post=1052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}