﻿{"id":401,"date":"2011-01-15T10:40:03","date_gmt":"2011-01-15T10:40:03","guid":{"rendered":""},"modified":"2011-11-18T17:12:15","modified_gmt":"2011-11-18T09:12:15","slug":"401","status":"publish","type":"post","link":"http:\/\/zerobox.org\/notes\/401.html","title":{"rendered":"WebShell\u68c0\u6d4b\u601d\u8def\u6d45\u8c08"},"content":{"rendered":"<h4>WebShell\u68c0\u6d4b\u601d\u8def\u6d45\u8c08<\/h4>\n<pre style=\"width: 100%; word-wrap: break-word;\">Author: lake2 [80SEC][TSRC]\r\nEMail:  lake2[at]foxmail.com\r\nSite:   http:\/\/www.0x54.org\r\nDate:   2010-12-19\r\n\r\n[\u76ee\u5f55]\r\n\r\n0x00  \u524d\u8a00\r\n0x01  Webshell\u68c0\u6d4b\u6a21\u578b\r\n0x02  \u9759\u6001\u7279\u5f81\u68c0\u6d4b\r\n0x03  \u52a8\u6001\u7279\u5f81\u68c0\u6d4b\r\n0x04  \u7ed3\u8bed\r\n\r\n0x00  \u524d\u8a00\r\n\r\n    \u4ec0\u4e48\u662fwebshell\uff1f\u6211\u76f8\u4fe1\u5982\u679c\u770b\u5b98\u80fd\u6709\u5174\u8da3\u770b\u8fd9\u7bc7\u6587\u7ae0\uff0c\u4e00\u5b9a\u5bf9webshell\u6709\u4e2a\u4e86\u89e3\u3002\u4e0d\r\n\u8fc7\u4e0d\u4e86\u89e3\u4e5f\u6ca1\u5173\u7cfb\uff0c\u90a3\u5c31\u8bf7\u5148\u641c\u7d22\u4e0b\u76f8\u5173\u8d44\u6599[1]\u3002\u5f53\u7136\uff0c\u672c\u7740\u201cknow it then hack it\u201d\r\n\u7684\u539f\u5219\uff0c\u5efa\u8bae\u4f60\u8fd8\u662f\u642d\u4e2a\u73af\u5883\uff0c\u719f\u6089\u4e0b\u5148\uff0c\u6bd5\u7adf\u7eb8\u4e0a\u8c08\u5175\u662f\u8981\u4e0d\u5f97\u7684\u3002\r\n\r\n    \u968f\u7740\u7f51\u7edc\u7684\u53d1\u5c55\uff0cWeb\u7ad9\u70b9\u7684\u589e\u52a0\uff0cwebshell\u8fd9\u79cd\u811a\u672c\u540e\u95e8\u6280\u672f\u4e5f\u53d1\u5c55\u8d77\u6765\u4e86\uff0c\u591a\u5c11\u9ed1\r\n\u5ba2\u6545\u4e8b\u90fd\u662f\u4ece\u4e00\u4e2a\u5c0f\u5c0f\u7684webshell\u5f00\u59cb\u7684\u3002\u6240\u4ee5\u5bf9\u4e8e\u7f51\u7ad9\uff0c\u7279\u522b\u662f\u7ad9\u70b9\u548c\u5e94\u7528\u4f17\u591a\u7684\u4e92\u8054\u7f51\r\n\u4f01\u4e1a\uff0c\u80fd\u591f\u5728\u51fa\u73b0webshell\u7684\u9636\u6bb5\u53ca\u65f6\u53d1\u73b0\u548c\u54cd\u5e94\u5c31\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002\r\n\r\n    \u672c\u6587\u4ee5\u7b14\u8005\u591a\u5e74\u4ece\u4e8b\u76f8\u5173\u5de5\u4f5c\u7684\u7ecf\u9a8c\u6765\u63a2\u8ba8\u4e0bwebshell\u7684\u68c0\u6d4b\u624b\u6bb5\u3002\r\n\r\n0x01  Webshell\u68c0\u6d4b\u6a21\u578b\r\n\r\n    \u8bb0\u5f97\u5f53\u5e74\u7b2c\u4e00\u4e2aASP\u6728\u9a6c\u51fa\u6765\u7684\u65f6\u5019\u53f7\u79f0\u201c\u6c38\u4e0d\u88ab\u6740\u7684ASP\u6728\u9a6c\u201d\uff08\u8bf7\u5927\u5bb6\u8654\u8bda\u5730\u8d77\u7acb\uff0c\r\n\u6211\u4eec\u4e00\u8d77\u6765\u819c\u62dc\u4e00\u4e0b\u6d77\u6d0b\u9876\u7aefASP\u6728\u9a6c\u4e4b\u7236LCX\u5927\u53d4\uff09\uff0c\u56e0\u4e3a\u5b83\u4f7f\u7528\u6b63\u5e38\u7aef\u53e3\uff0c\u4e14\u811a\u672c\u5bb9\u6613\u53d8\r\n\u5f62\uff0c\u4f7f\u5f97\u67e5\u6740\u5b83\u53d8\u5f97\u56f0\u96be\u3002\u4f46\u662f\uff0cWebshell\u8fd9\u79cd\u7279\u6b8a\u7684Web\u5e94\u7528\u7a0b\u5e8f\u4e5f\u6709\u4e24\u4e2a\u547d\u95e8\uff1a\u6587\u4ef6\u548c\r\nHTTP\u8bf7\u6c42\u3002\r\n\r\n    \u6211\u4eec\u5148\u6765\u770b\u4e0bWebshell\u7684\u8fd0\u884c\u6d41\u7a0b\uff1ahacker -&gt; HTTP Protocol -&gt; Web Server -&gt; CGI\u3002\r\n\u7b80\u5355\u6765\u770b\u5c31\u662f\u8fd9\u6837\u4e00\u4e2a\u987a\u5e8f\uff1a\u9ed1\u5ba2\u901a\u8fc7\u6d4f\u89c8\u5668\u4ee5HTTP\u534f\u8bae\u8bbf\u95eeWeb Server\u4e0a\u7684\u4e00\u4e2aCGI\u6587\u4ef6\u3002\r\n\u68d8\u624b\u7684\u662f\uff0cwebshell\u5c31\u662f\u4e00\u4e2a\u5408\u6cd5\u7684TCP\u8fde\u63a5\uff0c\u5728TCP\/IP\u7684\u5e94\u7528\u5c42\u4e4b\u4e0b\u6ca1\u6709\u4efb\u4f55\u7279\u5f81\uff08\u5f53\u7136\r\n\u4e0d\u662f\u7edd\u5bf9\u7684\uff09\uff0c\u53ea\u6709\u5728\u5e94\u7528\u5c42\u8fdb\u884c\u68c0\u6d4b\u3002\r\n\r\n    \u9ed1\u5ba2\u5165\u4fb5\u670d\u52a1\u5668\uff0c\u4f7f\u7528webshell\uff0c\u4e0d\u7ba1\u662f\u4f20\u6587\u4ef6\u8fd8\u662f\u6539\u6587\u4ef6\uff0c\u5fc5\u7136\u6709\u4e00\u4e2a\u6587\u4ef6\u4f1a\u5305\u542b\r\nwebshell\u4ee3\u7801\uff0c\u5f88\u5bb9\u6613\u60f3\u5230\u4ece\u6587\u4ef6\u4ee3\u7801\u5165\u624b\uff0c\u8fd9\u662f\u9759\u6001\u7279\u5f81\u68c0\u6d4b\uff1bwebshell\u8fd0\u884c\u540e\uff0cB\/S\u6570\r\n\u636e\u901a\u8fc7HTTP\u4ea4\u4e92\uff0cHTTP\u8bf7\u6c42\/\u54cd\u5e94\u4e2d\u53ef\u4ee5\u627e\u5230\u86db\u4e1d\u9a6c\u8ff9\uff0c\u8fd9\u662f\u52a8\u6001\u7279\u5f81\u68c0\u6d4b\u3002\r\n\r\n0x02  \u9759\u6001\u7279\u5f81\u68c0\u6d4b\r\n\r\n    \u9759\u6001\u7279\u5f81\u68c0\u6d4b\u662f\u6307\u4e0d\u6267\u884c\u800c\u901a\u8fc7\u56f4\u89c2\u7684\u65b9\u5f0f\u6765\u53d1\u73b0webshell\uff0c\u5373\u5148\u5efa\u7acb\u4e00\u4e2a\u6076\u610f\u5b57\u7b26\u4e32\r\n\u7279\u5f81\u5e93\uff0c\u7136\u540e\u901a\u8fc7\u5728\u5404\u7c7b\u811a\u672c\u6587\u4ef6\u4e2d\u68c0\u67e5\u662f\u5426\u5339\u914d\u3002\u8fd9\u662f\u4e00\u79cd\u6700\u7b80\u5355\u4e5f\u662f\u6700\u5e38\u89c1\u7684\u6280\u672f\uff0c\u9ad8\r\n\u7ea7\u4e00\u4e9b\u7684\uff0c\u53ef\u80fd\u8fd8\u6d89\u53ca\u5230\u8bed\u4e49\u5206\u6790\u3002\u7b14\u800506\u5e74\u5f00\u53d1\u7684\u201c\u96f7\u5ba2\u56feASP\u7ad9\u957f\u5b89\u5168\u52a9\u624b\u201d[2]\u5373\u662f\u901a\r\n\u8fc7\u6b64\u7c7b\u529e\u6cd5\u67e5\u627eASP\u7c7b\u578b\u7684webshell\u7684\u3002\r\n\r\n    \u9759\u6001\u7279\u5f81\u68c0\u6d4b\u9762\u4e34\u7684\u4e00\u4e2a\u95ee\u9898\u662f\u8bef\u62a5\u3002\u56e0\u4e3a\u4e00\u4e9b\u7279\u5f81\u5b57\u7b26\u4e32\u6b63\u5e38\u7a0b\u5e8f\u672c\u8eab\u4e5f\u9700\u8981\u7528\u5230\u3002\r\n\u6bd4\u5982PHP\u91cc\u9762\u7684eval\u3001system\u7b49\uff0cASP\u91cc\u9762\u7684FileSystemObject\u3001include\u7b49\u3002\u6240\u4ee5\u96f7\u5ba2\u56fe\u5728\r\n\u8bbe\u8ba1\u4e4b\u521d\u5c31\u662f\u4e00\u4e2a\u8f85\u52a9\u5de5\u5177\uff0c\u6700\u7ec8\u8fd8\u9700\u8981\u6709\u76f8\u5173\u5b89\u5168\u7ecf\u9a8c\u7684\u4eba\u6765\u5224\u5b9a\u3002\r\n\r\n    \u5bf9\u4e8e\u5c11\u91cf\u7ad9\u70b9\u53ef\u4ee5\u7528\u8fd9\u6837\u4eba\u8089\u53bb\u68c0\u67e5\uff0c\u5982\u679c\u662f\u4e00\u4e2a\u6210\u5343\u4e0a\u4e07\u7ad9\u70b9\u7684\u5927\u578b\u4f01\u4e1a\u5462\uff0c\u8fd9\u4e2a\u65f6\r\n\u5019\u518d\u4eba\u8089\u90a3\u5de5\u4f5c\u91cf\u53ef\u5c31\u5927\u4e86\u3002\u6240\u4ee5\u7528\u8fd9\u6837\u4e00\u79cd\u601d\u8def\uff1a\u5f3a\u5f31\u7279\u5f81\u3002\u5373\u628a\u7279\u5f81\u7801\u5206\u4e3a\u5f3a\u5f31\u4e24\u79cd\u7279\r\n\u5f81\uff0c\u5f3a\u7279\u5f81\u547d\u4e2d\u5219\u5fc5\u662fwebshell\uff1b\u5f31\u7279\u5f81\u7531\u4eba\u5de5\u53bb\u5224\u65ad\u3002\u52a0\u5165\u4e00\u79cd\u5f3a\u7279\u5f81\uff0c\u5373\u628a\u6d41\u884cwebshell\r\n\u7528\u5230\u7684\u7279\u5f81\u4f5c\u4e3a\u5f3a\u7279\u5f81\u91cd\u70b9\u76d1\u63a7\uff0c\u4e00\u65e6\u51fa\u73b0\u8fd9\u6837\u7684\u7279\u5f81\u5373\u53ef\u786e\u8ba4\u4e3awebshell\u7acb\u5373\u8fdb\u884c\u54cd\u5e94\u3002\r\n\u6bd4\u5982PHPSpy\u91cc\u9762\u4f1a\u51fa\u73b0phpspy\u3001wofeiwo\u3001eval($_POST[xxx])\u7b49\uff0cASP\u91cc\u9762\u51fa\u73b0Shell.Application\r\n\u7b49\u3002\u5f53\u7136\uff0c\u9ed1\u5ba2\u5b8c\u5168\u53ef\u4ee5\u53d8\u5f62\u8eb2\u8fc7\uff0c\u6ca1\u5173\u7cfb\uff0c\u8fd8\u6709\u4eba\u5de5\u68c0\u67e5\u7684\u5f31\u7279\u5f81\u3002\r\n\r\n    \u53e6\u4e00\u4e2a\u95ee\u9898\u662f\u6f0f\u62a5\u3002\u7a0b\u5e8f\u7684\u5173\u952e\u662f\u7279\u5f81\u5b57\u7b26\u4e32\uff0c\u5b83\u76f4\u63a5\u5173\u7cfb\u7740\u7ed3\u679c\uff0c\u5982\u679c\u4f60\u7684\u7279\u5f81\u5e93\u91cc\r\n\u9762\u6ca1\u6709\u8bb0\u5f55\u7684\u751a\u81f3\u662f\u4e00\u79cd\u65b0\u7684webshell\u4ee3\u7801\uff0c\u5c31\u53ef\u80fd\u675f\u624b\u65e0\u7b56\u4e86\u3002\u96f7\u5ba2\u56fe\u7b2c\u4e00\u7248\u51fa\u6765\u540e\uff0c\u6211\r\n\u81ea\u4ee5\u4e3a\u6240\u6709\u7684ASP webshell\u90fd\u53ef\u4ee5\u67e5\u4e86\uff0c\u4f46\u662f\u6211\u9519\u4e86\uff0c\u56e0\u4e3a\u4e0d\u65ad\u4f1a\u6709\u65b0\u7684\u65b9\u5f0f\u51fa\u6765\u7ed5\u8fc7\uff0c\u6700\r\n\u7ec8\u7ed3\u679c\u5c31\u662f\u7279\u5f81\u88ab\u52a8\u7684\u8ddf\u7740webshell\u5347\u7ea7\u800c\u5347\u7ea7\uff0c\u540c\u65f6\u8fd8\u9762\u4e34\u672a\u77e5\u7684webshell\u2014\u2014\u8fd9\u4e2a\u60c5\u51b5\r\n\u548c\u7279\u5f81\u7801\u6740\u6bd2\u8f6f\u4ef6\u4f55\u5176\u76f8\u4f3c\u3002\r\n\r\n    \u8981\u89e3\u51b3\u8bef\u62a5\u548c\u6f0f\u62a5\uff0c\u5c31\u4e0d\u80fd\u62d8\u6ce5\u4e8e\u4ee3\u7801\u7ea7\u522b\u4e86\u3002\u53ef\u4ee5\u6362\u4e2a\u89d2\u5ea6\u8003\u8651\u95ee\u9898\uff1a\u6587\u4ef6\u7cfb\u7edf\u3002\u6211\r\n\u4eec\u53ef\u4ee5\u7ed3\u5408\u6587\u4ef6\u7684\u5c5e\u6027\u6765\u5224\u65ad\uff0c\u6bd4\u5982apache\u662fnoboy\u542f\u52a8\u7684\uff0cwebshell\u7684\u5c5e\u4e3b\u5fc5\u7136\u4e5f\u662fnobody\uff0c\r\n\u5982\u679c\u6211\u7684Web\u76ee\u5f55\u65e0\u7f18\u65e0\u6545\u591a\u4e86\u4e2anobody\u7684\u6587\u4ef6\uff0c\u8fd9\u91cc\u5c31\u6709\u95ee\u9898\u4e86\u3002\u6700\u7406\u60f3\u7684\u529e\u6cd5\u662f\u9700\u8981\u5236\u5ea6\r\n\u548c\u6d41\u7a0b\u6765\u5efa\u8bbe\u4e00\u4e2aWeb\u76ee\u5f55\u552f\u4e00\u53d1\u5e03\u5165\u53e3\uff0c\u63a7\u5236\u4f4f\u8fd9\u4e2a\u5165\u53e3\uff0c\u975e\u6cd5\u8fdb\u6765\u7684Web\u6587\u4ef6\u81ea\u7136\u53ef\u4ee5\u53d1\r\n\u73b0\u3002\r\n\r\n0x03  \u52a8\u6001\u7279\u5f81\u68c0\u6d4b\r\n\r\n    webshell\u4f20\u5230\u670d\u52a1\u5668\u4e86\uff0c\u9ed1\u5ba2\u603b\u8981\u53bb\u6267\u884c\u5b83\u5427\uff0cwebshell\u6267\u884c\u65f6\u523b\u8868\u73b0\u51fa\u6765\u7684\u7279\u5f81\uff0c\u6211\r\n\u4eec\u79f0\u4e3a\u52a8\u6001\u7279\u5f81\u3002\r\n\r\n    \u5148\u524d\u6211\u4eec\u8bf4\u5230\u8fc7webshell\u901a\u4fe1\u662fHTTP\u534f\u8bae\u3002\u53ea\u8981\u6211\u4eec\u628awebshell\u7279\u6709\u7684HTTP\u8bf7\u6c42\/\u54cd\u5e94\r\n\u505a\u6210\u7279\u5f81\u5e93\uff0c\u52a0\u5230IDS\u91cc\u9762\u53bb\u68c0\u6d4b\u6240\u6709\u7684HTTP\u8bf7\u6c42\u5c31\u597d\u4e86\u3002\r\n\r\n    \u8fd9\u4e2a\u65b9\u6848\u6709\u4e2a\u95ee\u9898\u5c31\u662f\u6f0f\u62a5\u3002\u9996\u5148\u4f60\u5f97\u628a\u7f51\u4e0a\u6709\u7684webshell\u90fd\u641c\u96c6\u8d77\u6765\u6293\u7279\u5f81\uff0c\u8fd9\u662f\u4e2a\r\n\u4f53\u529b\u6d3b\uff0c\u65b0\u7684webshell\u51fa\u6765\u8fd8\u8981\u53bb\u66f4\u65b0\u8fd9\u4e2a\u5e93\uff0c\u603b\u662f\u5f88\u88ab\u52a8\uff0c\u88ab\u52a8\u5c31\u7b97\u4e86\uff0c\u4f46\u662f\u4e00\u4e9b\u4e0d\u66fe\u516c\r\n\u5f00\u7684webshell\u901a\u4fe1\u5c31\u4f1a\u6f0f\u6389\u3002\u90a3\u4e48\u8fd9\u4e2a\u65b9\u6848\u6709\u6ca1\u6709\u6548\u679c\uff0c\u53ea\u80fd\u8bf4\u6548\u679c\u6709\u9650\u5427\uff0c\u5bf9\u4ed8\u62ff\u6765\u4e3b\u4e49\r\n\u7684\u83dc\u9e1f\u53ef\u4ee5\uff0c\u9047\u5230\u9ad8\u7ea7\u4e00\u4e9b\u7684\u9ed1\u5ba2\u5c31\u65e0\u6548\u4e86\u3002\u6740\u6bd2\u8f6f\u4ef6\u90fd\u641e\u4e3b\u52a8\u9632\u5fa1\u4e86\uff0cwebshell\u4e5f\u4e0d\u80fd\u8001\r\n\u641e\u7279\u5f81\u7801\u662f\u5427\u3002\r\n\r\n    webshell\u8d77\u6765\u5982\u679c\u6267\u884c\u7cfb\u7edf\u547d\u4ee4\u7684\u8bdd\uff0c\u4f1a\u6709\u8fdb\u7a0b\u3002Linux\u4e0b\u5c31\u662fnobody\u7528\u6237\u8d77\u4e86bash\uff0c\r\nWin\u4e0b\u5c31\u662fIIS User\u542f\u52a8cmd\uff0c\u8fd9\u4e9b\u90fd\u662f\u52a8\u6001\u7279\u5f81\uff0c\u4e0d\u8fc7\u9700\u8981\u770b\u9ed1\u5ba2\u662f\u5426\u6267\u884c\u547d\u4ee4\uff08\u591a\u534a\u4f1a\u8fd9\r\n\u6837\uff09\uff0c\u8fd8\u6709\u5c31\u662f\u4f60\u7684\u670d\u52a1\u5668\u4e0a\u8981\u6709\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684Agent\u3002\u8981\u662f\u9ed1\u5ba2\u9ad8\u5174\uff0c\u518d\u53cd\u8fde\u56de\u53bb\uff0c\u8fd9\r\n\u4e0b\u5c31\u66f4\u597d\u4e86\uff0c\u4e00\u4e2aTCP\u8fde\u63a5\uff08\u4e5f\u53ef\u80fd\u662fUDP\uff09\uff0cAgent\u548cIDS\u90fd\u53ef\u4ee5\u6293\u73b0\u884c\u3002\u8fd9\u91cc\u8fd8\u6d89\u53ca\u5230\u4e3b\u673a\r\n\u540e\u95e8\u7684\u4e00\u4e9b\u68c0\u6d4b\u7b56\u7565\uff0c\u4ee5\u540e\u6709\u673a\u4f1a\u518d\u53e6\u6587\u53d9\u8ff0\u3002\r\n\r\n    \u56de\u5230\u7f51\u7edc\u5c42\u6765\uff0c\u4e4b\u524d\u6211\u4eec\u63a2\u8ba8\u8fc7\uff0cWebshell\u603b\u6709\u4e00\u4e2aHTTP\u8bf7\u6c42\uff0c\u5982\u679c\u6211\u5728\u7f51\u7edc\u5c42\u76d1\u63a7HTTP\r\n\u8bf7\u6c42\uff08\u6211\u6ca1\u6709\u76d1\u63a7Apache\/IIS\u65e5\u5fd7\uff09\uff0c\u6709\u4e00\u5929\u7a81\u7136\u51fa\u73b0\u4e00\u4e2a\u65b0\u7684PHP\u6587\u4ef6\u8bf7\u6c42\u6216\u8005\u4e00\u4e2a\u5e73\u65f6\r\n\u662fGET\u8bf7\u6c42\u7684\u6587\u4ef6\u7a81\u7136\u6709\u4e86POST\u8bf7\u6c42\uff0c\u8fd8\u8fd4\u56de\u7684200\uff0c\u8fd9\u91cc\u5c31\u6709\u95ee\u9898\u4e86\u3002\u8fd9\u79cd\u57fa\u4e8e\u533a\u522b\u4e8e\u6b63\u5e38\r\n\u8bf7\u6c42\u7684\u5f02\u5e38\u6a21\u578b\uff0c\u59d1\u4e14\u79f0\u4e4b\u4e3aHTTP\u5f02\u5e38\u8bf7\u6c42\u6a21\u578b\u68c0\u6d4b\u3002\u4e00\u65e6\u6709\u4e86\u8fd9\u6837\u7684\u6a21\u578b\uff0c\u9664\u4e86Webshell\uff0c\r\n\u8fd8\u53ef\u4ee5\u53d1\u73b0\u5f88\u591a\u95ee\u9898\u7684\u3002\r\n\r\n    \u8fd8\u6709\u4e00\u4e2a\u601d\u8def\u6765\u81ea\u300a\u6d45\u8c08javascript\u51fd\u6570\u52ab\u6301\u300b[3]\u548c\u67d0\u6b3e\u4ee3\u7801\u5ba1\u8ba1\u8f6f\u4ef6\u3002\u56de\u5fc6\u4e00\u4e0b\uff0c\r\n\u6211\u4eec\u8c03\u8bd5\u7f51\u9a6c\u7684\u65f6\u5019\uff0c\u600e\u4e48\u8fd8\u539f\u5b83\u5404\u79cd\u7a00\u5947\u53e4\u602a\u7684\u52a0\u5bc6\u7b97\u6cd5\u5462\uff0c\u7b80\u5355\uff0c\u628aeval\u6539\u6210alert\u5c31\r\n\u597d\u4e86\uff01\u7c7b\u4f3c\u7684\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u5728CGI\u5168\u5c40\u91cd\u8f7d\u4e00\u4e9b\u51fd\u6570\uff08\u6bd4\u5982ASP.Net\u7684global.asax\u6587\u4ef6\uff09\uff0c\r\n\u5f53\u6709webshell\u8c03\u7528\u7684\u65f6\u5019\u5c31\u53ef\u4ee5\u53d1\u73b0\u5f02\u5e38\u3002\u4f8b\u5982\u4ee5\u4e0bASP\u4ee3\u7801\u5c31\u5b9e\u73b0\u4e86\u5bf9ASP\u7684execute\u51fd\u6570\r\n\u7684\u91cd\u8f7d\uff1a\r\n\r\n--code-------------------------------------------------------------------------\r\n&lt;%\r\nFunction execute(stra)\r\n    Response.Write(\"get the arg : \"+stra)\r\nEnd Function\r\na=\"response.write(\"\"hello,world\"\")\"\r\nexecute(a)\r\n%&gt;\r\n-------------------------------------------------------------------------------\r\n\r\n    \u8fd9\u4e2a\u65b9\u6cd5\u5728\u5e94\u7528\u5c42\u8fd8\u662f\u6709\u4e9b\u95ee\u9898\uff0c\u6240\u4ee5\u5982\u679c\u5728CGI\u5f15\u64ce\u5185\u6838\u91cc\u9762\u6539\u53ef\u80fd\u4f1a\u597d\u4e9b\u3002\u6839\u636e\u5c0f\r\n\u9053\u6d88\u606f\uff0c\u8fd9\u671fph4nt0m\u7684webzine\u4f1a\u6709\u4e00\u7bc7\u6587\u7ae0\u6d89\u53caPHP\u5185\u6838\u4e2d\u9632webshell\u7684\uff0c\u6709\u5174\u8da3\u7684\u540c\u5b66\r\n\u53ef\u4ee5\u5173\u6ce8\u3002\r\n\r\n0x04  \u7ed3\u8bed\r\n\r\n    \u672c\u6587\u53ea\u63a2\u8ba8\u4e86\u68c0\u6d4bWebshell\u7684\u4e00\u4e9b\u601d\u8def\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u4e9b\u5e2e\u52a9\uff0c\u5982\u679c\u4f60\u6709\u66f4\u597d\u7684\u65b9\u6848\uff0c\u4e5f\r\n\u53ef\u4ee5\u548c\u6211\u63a2\u8ba8\u3002\u81f3\u4e8e\u4e00\u4e9b\u5de5\u5177\u548c\u7279\u5f81\uff0c\u7531\u4e8e\u8fd9\u6837\u90a3\u6837\u7684\u539f\u56e0\u5c31\u4e0d\u516c\u5f00\u4e86\uff0c\u6211\u59cb\u7ec8\u8ba4\u4e3a\uff0c\u76f8\u6bd4\r\n\u4e8e\u5de5\u5177\uff0c\u601d\u8def\u6c38\u8fdc\u662f\u6700\u91cd\u8981\u7684\u3002\r\n\r\n0x05  \u5e7f\u544a\r\n\r\n    \u5230\u6b64\u7ed3\u675f\uff0c\u4e5f\u987a\u4fbf\u505a\u4e2a\u5e7f\u544a\u3002\r\n\r\n    80SEC\u662f\u4e00\u4e2a\u81f4\u529b\u4e8eWeb\u5b89\u5168\u7814\u7a76\u7684\u56e2\u4f53\uff0c\u6b22\u8fce\u5173\u6ce8\u6211\u4eec\u7684\u6700\u65b0\u52a8\u6001\uff0c\u7f51\u5740http:\/\/www.80sec.com\r\n\r\n    TSRC\u662f\u817e\u8baf\u5b89\u5168\u5e94\u6025\u54cd\u5e94\u4e2d\u5fc3\uff08Tencent Security Response Center\uff09\u7684\u7f29\u5199\uff0c\u8fd9\u662f\u817e\r\n\u8baf\u516c\u53f8\u8d1f\u8d23\u7a81\u53d1\u5b89\u5168\u4e8b\u4ef6\u5904\u7406\u7684\u56e2\u961f\uff0c\u5982\u679c\u60a8\u5bf9\u817e\u8baf\u4ea7\u54c1\u548c\u4e1a\u52a1\u6709\u4efb\u4f55\u5b89\u5168\u4e0a\u7684\u610f\u89c1\u53ef\u4ee5\u4e0e\r\n\u6211\u4eec\u8054\u7cfb\uff0c\u4e5f\u6b22\u8fce\u6709\u610f\u5728\u4e92\u8054\u7f51\u5b89\u5168\u884c\u4e1a\u53d1\u5c55\u7684\u540c\u5b66\u52a0\u5165\u6211\u4eec\u3002\r\n\r\n    \u90ae\u7bb1\uff1asecurity#tencent.com\r\n    \u4e3b\u9875\uff1ahttp:\/\/security.qzone.qq.com\r\n\r\nReferences\r\n\r\n[1] soso\u767e\u79d1webshell\uff0chttp:\/\/baike.soso.com\/v35165.htm\r\n[2] \u96f7\u5ba2\u56feASP\u7ad9\u957f\u5b89\u5168\u52a9\u624b\uff0chttp:\/\/www.onegreen.net\/code\/HTML\/24443.html\r\n[3] \u6d45\u8c08javascript\u51fd\u6570\u52ab\u6301\uff0chttp:\/\/www.xfocus.net\/articles\/200712\/963.html\r\n\r\n-EOF-<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>WebShell\u68c0\u6d4b\u601d\u8def\u6d45\u8c08 Author: lake2 [80SEC][TSR &hellip;<\/p>\n<p class=\"read-more\"><a href=\"http:\/\/zerobox.org\/notes\/401.html\">\u7ee7\u7eed\u9605\u8bfb &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[132],"class_list":["post-401","post","type-post","status-publish","format-standard","hentry","tag-webshell"],"views":895,"_links":{"self":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/comments?post=401"}],"version-history":[{"count":0,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/posts\/401\/revisions"}],"wp:attachment":[{"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/media?parent=401"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/categories?post=401"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/zerobox.org\/notes\/wp-json\/wp\/v2\/tags?post=401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}