本文实例总结了php网站被挂木马后的修复方法。分享给大家供大家参考。具体方法如下：
在linux中我们可以使用命令来搜查木马文件,到代码安装目录执行下面命令
复制代码 代码如下:find ./ -iname "*.php" | xargs grep -H -n "eval(base64_decode"
搜出来接近100条结果，这个结果列表很重要，木马都在里面，要一个一个文件打开验证是否是木马，如果是，马上删除掉
最后找到10个木马文件，存放在各种目录，都是php webshell，功能很齐全，用base64编码
如果你在windows中查找目录直接使用windows文件搜索就可以了，可以搜索eval或最近修改文件，然后如果是dedecms我们要查看最新dedecms漏洞呀然后修补。
下面给个php木马查找工具,直接放到你站点根目录
复制代码 代码如下:<"t00ls"; //设置用户名
$password = "t00ls"; //设置密码
$md5 = md5(md5($username).md5($password));
$version = "PHP Web木马扫描器v1.0";
PHP Web 木马扫描器
$realpath = realpath('./');
$selfpath = $_SERVER['PHP_SELF'];
$selfpath = substr($selfpath, 0, strrpos($selfpath,'/'));
define('REALPATH', str_replace('//','/',str_replace('\','/',substr($realpath, 0, strlen($realpath) - strlen($selfpath)))));
define('MYFILE', basename(__FILE__));
define('MYPATH', str_replace('\', '/', dirname(__FILE__)).'/');
define('MYFULLPATH', str_replace('\', '/', (__FILE__)));
define('HOST', "http://".$_SERVER['HTTP_HOST']);
"Content-Type" content="text/html; charset=gb2312" />
<style>
body{margin:0px;}
body,td{font: 12px Arial,Tahoma;line-height: 16px;}
a {color: #00f;text-decoration:underline;}
a:hover{color: #f00;text-decoration:none;}
.alt1 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f1f1f1;padding:5px 10px 5px 5px;}
.alt2 td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#f9f9f9;padding:5px 10px 5px 5px;}
.focus td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#ffffaa;padding:5px 10px 5px 5px;}
.head td{border-top:1px solid #fff;border-bottom:1px solid #ddd;background:#e9e9e9;padding:5px 10px 5px 5px;font-weight:bold;}
.head td span{font-weight:normal;}
</style>
</head>
<body>
<"frmlogin" name="frmlogin" method="post" action="">用户名: <input type="text" name="username" id="username" /> 密码: <input type="password" name="password" id="password" /> <input type="submit" name="btnLogin" id="btnLogin" value="登陆" /></form>';
}
elseif(isset($_POST['username']) && isset($_POST['password']) && (md5(md5($_POST['username']).md5($_POST['password']))==$md5))
{
setcookie("t00ls", $md5, time()+60*60*24*365,"/");
echo "登陆成功！";
header( 'refresh: 1; url='.MYFILE.'"t00ls", $md5, time()+60*60*24*365,"/");
$setting = getSetting();
$action = isset($_GET['action'])"";
if($action=="logout")
{
setcookie ("t00ls", "", time() - 3600);
Header("Location: ".MYFILE);
exit();
}
if($action=="download" && isset($_GET['file']) && trim($_GET['file'])!="")
{
$file = $_GET['file'];
ob_clean();
if (@file_exists($file)) {
header("Content-type: application/octet-stream");
header("Content-Disposition: filename="".basename($file).""");
echo file_get_contents($file);
}
exit();
}
"0" cellpadding="0" cellspacing="0" width="100%">
<tbody><tr class="head">
<td><"float: right; font-weight:bold;"><"<a href='http://www.t00ls.net/'>$version</a>""alt1">
<td><span style="float: right;"><"Y-m-d H:i:s",mktime())"">扫描</a> |
<a href="">设定</a> |
<a href="">登出</a>
</td>
</tr>
</tbody></table>
<br>
<"setting")
{
if(isset($_POST['btnsetting']))
{
$Ssetting = array();
$Ssetting['user']=isset($_POST['checkuser'])"php | php";
$Ssetting['all']=isset($_POST['checkall'])&&$_POST['checkall']=="on""on""t00ls_s", base64_encode(serialize($Ssetting)), time()+60*60*24*365,"/");
echo "设置完成！";
header( 'refresh: 1; url='.MYFILE.'"frmSetting" method="post" action="">
<FIELDSET style="width:400px">
<LEGEND>扫描设定</LEGEND>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="60">文件后缀:</td>
<td width="300"><input type="text" name="checkuser" id="checkuser" style="width:300px;" value="<"></td>
</tr>
<tr>
<td><label for="checkall">所有文件</label></td>
<td><input type="checkbox" name="checkall" id="checkall" <"checked""checkhta">设置文件</label></td>
<td><input type="checkbox" name="checkhta" id="checkhta" <"checked""submit" name="btnsetting" id="btnsetting" value="提交">
</td>
</tr>
</table>
</fieldset>
</form>
<"/""/":$dir;
"frmScan" method="post" action="">
<table width="100%%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="35" style="vertical-align:middle; padding-left:5px;">扫描路径:</td>
<td width="690">
<input type="text" name="path" id="path" style="width:600px" value="<">
<input type="submit" name="btnScan" id="btnScan" value="开始扫描"></td>
</tr>
</table(www.jb51.net)>
</form>
<"";
$list = "";
if(trim($setting['user'])!="")
{
$is_user = explode("|",$setting['user']);
if(count($is_user)>0)
{
foreach($is_user as $key=>$value)
$is_user[$key]=trim(str_replace("","(.)",$value));
$is_ext = "(.".implode("($|.))|(.",$is_user)."($|.))";
}
}
if($setting['hta']==1)
{
$is_hta=1;
$is_ext = strlen($is_ext)>0"|":$is_ext;
$is_ext.="(^.htaccess$)";
}
if($setting['all']==1 || (strlen($is_ext)==0 && $setting['hta']==0))
{
$is_ext="(.+)";
}
$php_code = getCode();
if(!is_readable($dir))
$dir = MYPATH;
$count=$scanned=0;
scan($dir,$is_ext);
$end=mktime();
$spent = ($end - $start);
"padding:10px; background-color:#ccc">扫描: <"100%" border="0" cellspacing="0" cellpadding="0">
<tr class="head">
<td width="15" align="center">No.</td>
<td width="48%">文件</td>
<td width="12%">更新时间</td>
<td width="10%">原因</td>
<td width="20%">特征</td>
<td>动作</td>
</tr>
<" ","n","r","t");
$dh = @opendir( $path );
while(false!==($file=readdir($dh))){
if( !in_array( $file, $ignore ) ){
if( is_dir( "$path$file" ) ){
scan("$path$file/",$is_ext);
} else {
$current = $path.$file;
if(MYFULLPATH==$current) continue;
if(!preg_match("/$is_ext/i",$file)) continue;
if(is_readable($current))
{
$scanned++;
$content=file_get_contents($current);
$content= str_replace($replace,"",$content);
foreach($php_code as $key => $value)
{
if(preg_match("/$value/i",$content))
{
$count++;
$j = $count % 2 + 1;
$filetime = date('Y-m-d H:i:s',filemtime($current));
$reason = explode("->",$key);
$url = str_replace(REALPATH,HOST,$current);
preg_match("/$value/i",$content,$arr);
$list.="
<tr class='alt$j' onmouseover='this.className="focus";' onmouseout='this.className="alt$j";'>
<td>$count</td>
<td><a href='$url' target='_blank'>$current</a></td>
<td>$filetime</td>
<td><font color=red>$reason[0]</font></td>
<td><font color=#090>$reason[1]</font></td>
<td><a href='";
//echo $key . "-" . $path . $file ."(" . $arr[0] . ")" ."<br />";
//echo $path . $file ."<br />";
break;
}
}
}
}
}
}
closedir( $dh );
}
function getSetting()
{
$Ssetting = array();
if(isset($_COOKIE['t00ls_s']))
{
$Ssetting = unserialize(base64_decode($_COOKIE['t00ls_s']));
$Ssetting['user']=isset($Ssetting['user'])"php | php";
$Ssetting['all']=isset($Ssetting['all'])"php | php";
$Ssetting['all']=0;
$Ssetting['hta']=1;
setcookie("t00ls_s", base64_encode(serialize($Ssetting)), time()+60*60*24*365,"/");
}
return $Ssetting;
}
function getCode()
{
return array(
'后门特征->cha88.cn'=>'cha88.cn',
'后门特征->c99shell'=>'c99shell',
'后门特征->phpspy'=>'phpspy',
'后门特征->Scanners'=>'Scanners',
'后门特征->cmd.php'=>'cmd.php',
'后门特征->str_rot13'=>'str_rot13',
'后门特征->webshell'=>'webshell',
'后门特征->EgY_SpIdEr'=>'EgY_SpIdEr',
'后门特征->tools88.com'=>'tools88.com',
'后门特征->SECFORCE'=>'SECFORCE',
'后门特征->eval("")"|s*)\$',
'可疑代码特征->assert($'=>'assert(('|"|s*)\$',
'危险MYSQL代码->returns string soname'=>'returnsstringsoname',
'危险MYSQL代码->into outfile'=>'intooutfile',
'危险MYSQL代码->load_file'=>'select(s+)(.*)load_file',
'加密后门特征->eval(gzinflate('=>'eval(gzinflate(',
'加密后门特征->eval(base64_decode('=>'eval(base64_decode(',
'加密后门特征->eval(gzuncompress('=>'eval(gzuncompress(',
'加密后门特征->eval(gzdecode('=>'eval(gzdecode(',
'加密后门特征->eval(str_rot13('=>'eval(str_rot13(',
'加密后门特征->gzuncompress(base64_decode('=>'gzuncompress(base64_decode(',
'加密后门特征->base64_decode(gzuncompress('=>'base64_decode(gzuncompress(',
'一句话后门特征->eval($_'=>'eval(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'一句话后门特征->assert($_'=>'assert(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'一句话后门特征->require($_'=>'require(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'一句话后门特征->require_once($_'=>'require_once(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'一句话后门特征->include($_'=>'include(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'一句话后门特征->include_once($_'=>'include_once(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'一句话后门特征->call_user_func("assert"'=>'call_user_func(("|')assert("|')',
'一句话后门特征->call_user_func($_'=>'call_user_func(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'一句话后门特征->$_POST/GET/REQUEST/COOKIE["|s*)\$_(POST|GET|REQUEST|COOKIE)[',
'一句话后门特征->echo(file_get_contents($_POST/GET/REQUEST/COOKIE'=>'echo(file_get_contents(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'上传后门特征->file_put_contents($_POST/GET/REQUEST/COOKIE,$_POST/GET/REQUEST/COOKIE'=>'file_put_contents(('|"|s*)\$_(POST|GET|REQUEST|COOKIE)[([^]]+)],('|"|s*)\$_(POST|GET|REQUEST|COOKIE)',
'上传后门特征->fputs(fopen("","w"),$_POST/GET/REQUEST/COOKIE['=>'fputs(fopen((.+),('|")w('|")),('|"|s*)\$_(POST|GET|REQUEST|COOKIE)[',
'.htaccess插马特征->SetHandler application/x-httpd-php'=>'SetHandlerapplication/x-httpd-php',
'.htaccess插马特征->php_value auto_prepend_file'=>'php_valueauto_prepend_file',
'.htaccess插马特征->php_value auto_append_file'=>'php_valueauto_append_file'
);
}
?>
希望本文所述对大家基于php的网站安全建设有所帮助。