微盾PHP脚本加密专家解密算法

lrx182125

Code:
<?php // This file is protected by copyright law & provided under license. Copyright(C) 2005-2009 www.vidun.com, All rights reserved. $OOO0O0O00=__FILE__;$OOO000000=urldecode('%74%68%36%73%62%65%68%71%6c%61%34%63%6f%5f%73%61%64%66%70%6e%72');$OO00O0000=28;$OOO0000O0=$OOO000000{4}.$OOO000000{9}.$OOO000000{3}.$OOO000000{5};$OOO0000O0.=$OOO000000{2}.$OOO000000{10}.$OOO000000{13}.$OOO000000{16};$OOO0000O0.=$OOO0000O0{3}.$OOO000000{11}.$OOO000000{12}.$OOO0000O0{7}.$OOO000000{5};$O0O0000O0='OOO0000O0';eval(($$O0O0000O0('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')));return;?> kr9NHenNHenNHe1zfukgFMaXdoyjcUImb19oUAxyb18mRtwmwJ4LT09NHr8XTzEXRJwmwJXPkr9NTzEXHenNHtILT08XT08XHr8XhtONTznNTzEXHr8Pkr8XHenNHr8XHtXLT08XHr8XHeEXhUXmOB50cbk5d3a3D2iUUylRTlfNaaOnCAkJW2YrcrcMO2fkDApQToxYdanXAbyTF1c2BuiDGjExHjH0YTC3KeLqRz0mRtfnWLYrOAcuUrlhU0xYTL9WAakTayaBa1icBMyJC2OlcMfPDBpqdo1Vd3nxFmY0fbc3Gul6HerZHzW1YjF4KUSvkZLphUL7cMYSd3YlhtONHeEXTznNHeEpK2a2CBXPkr9NHenNHenNHtL7eWplC2ivwunPFolVcM8PhTSYtI==

很明显，是使用了某种PHP代码混淆工具混淆了下，Google一把，原来是使用的微盾PHP脚本加密专家加密的，网上搜了下，没找到免费的解密工具，于是乎，自己就研究了下，写了个解密算法，share下，给遇到同样问题的朋友一个方便。

       另外需要说明的是，我测试，本地解密出来的代码可以阅读的，由于代码混淆过，可能还原出来的有些地方和原代码有出入，有需要可自行修改之。

Code:
<?php /*********************************** *威盾PHP加密专家解密算法 By：Neeao http://Neeao.com *2009-09-10 ***********************************/  $filename="install.php";//要解密的文件 $lines = file($filename);//0,1,2行  //第一次base64解密 $content=""; if(preg_match("/O0O0000O0\('.*'\)/",$lines[1],$y)) {     $content=str_replace("O0O0000O0('","",$y[0]);     $content=str_replace("')","",$content);     $content=base64_decode($content); } //第一次base64解密后的内容中查找密钥 $decode_key=""; if(preg_match("/\),'.*',/",$content,$k)) {     $decode_key=str_replace("),'","",$k[0]);     $decode_key=str_replace("',","",$decode_key); } //截取文件加密后的密文 $Secret=substr($lines[2],380); //echo $Secret;  //直接还原密文输出 echo "<?php\n".base64_decode(strtr($Secret,$decode_key,'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'))."?>";  ?>