{"blog_url":"https://blog.hamayanhamayan.com/","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fblog.hamayanhamayan.com%2Fentry%2F2021%2F12%2F18%2F132236\" title=\"CTF\u306eWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u304a\u3051\u308bPHP\u307e\u3068\u3081 - \u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["Security"],"title":"CTF\u306eWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u304a\u3051\u308bPHP\u307e\u3068\u3081","author_url":"https://blog.hatena.ne.jp/hamayanhamayan/","url":"https://blog.hamayanhamayan.com/entry/2021/12/18/132236","type":"rich","author_name":"hamayanhamayan","provider_name":"Hatena Blog","description":"\u3053\u306e\u8a18\u4e8b\u306fCTF\u306eWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 Advent Calendar 2021\u306e17\u65e5\u76ee\u306e\u8a18\u4e8b\u3067\u3059\u3002 \u672c\u307e\u3068\u3081\u306fWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3067\u5171\u901a\u3057\u3066\u4f7f\u3048\u307e\u3059\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30f3\u30c6\u30b9\u30c8\uff08CTF\uff09\u3067\u4f7f\u3046\u305f\u3081\u306e\u307e\u3068\u3081\u3067\u3059\u3002 \u60aa\u7528\u3057\u306a\u3044\u3053\u3068\u3002\u52dd\u624b\u306b\u666e\u901a\u306e\u30b5\u30fc\u30d0\u3067\u8a66\u884c\u3059\u308b\u3068\u72af\u7f6a\u3067\u3059\u3002 Web\u30b5\u30fc\u30d0\u306e\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\uff08\u6700\u8fd1\u306f\u305d\u3046\u3067\u3082\u306a\u3044\u304b\uff09\u3001\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u3068\u3057\u3066\u666e\u53ca\u3057\u3066\u3044\u308bPHP\u306b\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u7684\u8ab2\u984c\u304c\u591a\u3044\u3002 <?php eval($_POST['cmd']); ?>\u3068\u306a\u308a\u3046\u308b\u30b3\u30fc\u30c9\u304c\u3042\u308b\u3068\u5371\u967a eval(\"echo \".eval(\"return \".$_GET[\"calc\"].\";\").\";\"); CTFtime.\u2026","provider_url":"https://hatena.blog","width":"100%","version":"1.0","blog_title":"\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093\u306f\u307e\u3084\u3093","published":"2021-12-18 13:22:36","height":"190"}