12月26

乘风多用户PHP统计系统cf.php解码

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00:26    Bear 本站原创    不指定
    今天一位朋友在我的《Base64在线编码解码》上留言说解出来的是乱码，于是我帮他分析了下。
<?php    if (!function_exists("T7FC56270E7A70FA81A5935B72EACBE29"))  {   function T7FC56270E7A70FA81A5935B72EACBE29($TF186217753C37B9B9F958D906208506E)   {    $TF186217753C37B9B9F958D906208506E = base64_decode($TF186217753C37B9B9F958D906208506E);    $T7FC56270E7A70FA81A5935B72EACBE29 = 0;    $T9D5ED678FE57BCCA610140957AFAB571 = 0;    $T0D61F8370CAD1D412F80B84D143E1257 = 0;    $TF623E75AF30E62BBD73D6DF5B50BB7B5 = (ord($TF186217753C37B9B9F958D906208506E[1]) << 8) + ord($TF186217753C37B9B9F958D906208506E[2]);    $T3A3EA00CFC35332CEDF6E5E9A32E94DA = 3;    $T800618943025315F869E4E1F09471012 = 0;    $TDFCF28D0734569A6A693BC8194DE62BF = 16;    $TC1D9F50F86825A1A2302EC2449C17196 = "";    $TDD7536794B63BF90ECCFD37F9B147D7F = strlen($TF186217753C37B9B9F958D906208506E);    $TFF44570ACA8241914870AFBC310CDB85 = __FILE__;    $TFF44570ACA8241914870AFBC310CDB85 = file_get_contents($TFF44570ACA8241914870AFBC310CDB85);    $TA5F3C6A11B03839D46AF9FB43C97C188 = 0;    preg_match(base64_decode("LyhwcmludHxzcHJpbnR8ZWNobykv"), $TFF44570ACA8241914870AFBC310CDB85, $TA5F3C6A11B03839D46AF9FB43C97C188);    for (;$T3A3EA00CFC35332CEDF6E5E9A32E94DA<$TDD7536794B63BF90ECCFD37F9B147D7F;)    {     if (count($TA5F3C6A11B03839D46AF9FB43C97C188)) exit;     if ($TDFCF28D0734569A6A693BC8194DE62BF == 0)     {      $TF623E75AF30E62BBD73D6DF5B50BB7B5 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) << 8);      $TF623E75AF30E62BBD73D6DF5B50BB7B5 += ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]);      $TDFCF28D0734569A6A693BC8194DE62BF = 16;     }     if ($TF623E75AF30E62BBD73D6DF5B50BB7B5 & 0x8000)     {      $T7FC56270E7A70FA81A5935B72EACBE29 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) << 4);      $T7FC56270E7A70FA81A5935B72EACBE29 += (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA]) >> 4);      if ($T7FC56270E7A70FA81A5935B72EACBE29)      {       $T9D5ED678FE57BCCA610140957AFAB571 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) & 0x0F) + 3;       for ($T0D61F8370CAD1D412F80B84D143E1257 = 0; $T0D61F8370CAD1D412F80B84D143E1257 < $T9D5ED678FE57BCCA610140957AFAB571; $T0D61F8370CAD1D412F80B84D143E1257++)        $TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012+$T0D61F8370CAD1D412F80B84D143E1257] = $TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012-$T7FC56270E7A70FA81A5935B72EACBE29+$T0D61F8370CAD1D412F80B84D143E1257];       $T800618943025315F869E4E1F09471012 += $T9D5ED678FE57BCCA610140957AFAB571;      }      else      {       $T9D5ED678FE57BCCA610140957AFAB571 = (ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) << 8);       $T9D5ED678FE57BCCA610140957AFAB571 += ord($TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++]) + 16;       for ($T0D61F8370CAD1D412F80B84D143E1257 = 0; $T0D61F8370CAD1D412F80B84D143E1257 < $T9D5ED678FE57BCCA610140957AFAB571; $TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012+$T0D61F8370CAD1D412F80B84D143E1257++] = $TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA]);       $T3A3EA00CFC35332CEDF6E5E9A32E94DA++; $T800618943025315F869E4E1F09471012 += $T9D5ED678FE57BCCA610140957AFAB571;      }     }     else $TC1D9F50F86825A1A2302EC2449C17196[$T800618943025315F869E4E1F09471012++] = $TF186217753C37B9B9F958D906208506E[$T3A3EA00CFC35332CEDF6E5E9A32E94DA++];     $TF623E75AF30E62BBD73D6DF5B50BB7B5 <<= 1;     $TDFCF28D0734569A6A693BC8194DE62BF--;     if ($T3A3EA00CFC35332CEDF6E5E9A32E94DA == $TDD7536794B63BF90ECCFD37F9B147D7F)     {      $TFF44570ACA8241914870AFBC310CDB85 = implode("", $TC1D9F50F86825A1A2302EC2449C17196);      $TFF44570ACA8241914870AFBC310CDB85 = "?".">".$TFF44570ACA8241914870AFBC310CDB85."<"."?";      return $TFF44570ACA8241914870AFBC310CDB85;     }    }   }  }  eval(T7FC56270E7A70FA81A5935B72EACBE29("一大堆貌似base64_encode后的代码"));  ?>

    直接将eval替换成echo,结果页面为空白！真郁闷，这招可是百发百中的啊，今天遇到了高人写的代码。。。

    慢慢替换，将长变量替换成短的，增强代码可读性。
<?php    
if (!function_exists("bear01"))  
  {  
  function bear01($bear02)  
    {    
    $bear02 = base64_decode($bear02);    
    $bear01 = 0;    
    $bear03 = 0;    
    $bear04 = 0;    
    $bear05 = (ord($bear02[1]) << 8) + ord($bear02[2]);    
    $bear06 = 3;    
    $bear07 = 0;    
    $bear08 = 16;    
    $bear09 = "";    
    $bear10 = strlen($bear02);    
    $bear11 = __FILE__;    
    $bear11 = file_get_contents($bear11);    
    $bear12 = 0;    
    preg_match(base64_decode("LyhwcmludHxzcHJpbnR8ZWNobykv"), $bear11, $bear12);   ///(print|sprint|echo)/  
    for (;$bear06<$bear10;)    
      {    
      if (count($bear12)) exit;    
      if ($bear08 == 0)    
        {      
        $bear05 = (ord($bear02[$bear06++]) << 8);      
        $bear05 += ord($bear02[$bear06++]);      
        $bear08 = 16;    
        }    
      if ($bear05 & 0x8000)    
        {      
        $bear01 = (ord($bear02[$bear06++]) << 4);      
        $bear01 += (ord($bear02[$bear06]) >> 4);      
        if ($bear01)      
          {      
          $bear03 = (ord($bear02[$bear06++]) & 0x0F) + 3;      
          for ($bear04 = 0; $bear04 < $bear03; $bear04++)        
            $bear09[$bear07+$bear04] = $bear09[$bear07-$bear01+$bear04];      
          $bear07 += $bear03;      
          }    
         else      
              {      
              $bear03 = (ord($bear02[$bear06++]) << 8);      
              $bear03 += ord($bear02[$bear06++]) + 16;      
              for ($bear04 = 0; $bear04 < $bear03; $bear09[$bear07+$bear04++] = $bear02[$bear06]);      
                   $bear06++; $bear07 += $bear03;      
                }    
         }    
       else
            $bear09[$bear07++] = $bear02[$bear06++];    
            $bear05 <<= 1;    
            $bear08--;    
            if ($bear06 == $bear10)    
                 {      
                 $bear11 = implode("", $bear09);      
                 $bear11 = "?".">".$bear11."<"."?";      
                 return $bear11;    
                 }    
         }  
    }  
  }  
eval(bear01("一大堆貌似base64_encode后的代码"));  ?>

其中
preg_match(base64_decode("LyhwcmludHxzcHJpbnR8ZWNobykv"), $bear11, $bear12);

    显得格外扎眼 ，decode出来就是
/(print|sprint|echo)/
  
    哈哈，echo就在里面，将
/(print|sprint)/

    base64_encode一下然后替换，eval替换成echo输出，被隐藏的代码终于重见天日。
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阅读(3036) | 评论(15) | 引用(0)
zhangzyj Email
06/30/2010 12:45
知道了
是preg_match(base64_decode("LyhwcmludHxzcHJpbnR8ZWNobykv"), $bear11, $bear12);   ///(print|sprint|echo)/   这里直接复制过去后面会多一个空格，这个空格影响了输出，去掉“///(print|sprint|echo)/   ”就可以了
Bear 回复于 06/30/2010 12:47
文中的只是为了好看，改的时候在源文件里面改就好了。。。
zhangzyj Email
06/30/2010 12:33
按照你的我解出来也是空白，求教！Q183859648，拜谢
Bear 回复于 06/30/2010 12:35
请将/(print|sprint)/ base64加密一下然后替换LyhwcmludHxzcHJpbnR8ZWNobykv，eval替换成echo输出
sean
06/01/2010 22:18
eval替换成echo 輸出後的程序碼這時候無法修改啊...搞不太懂puke
Bear 回复于 06/05/2010 20:33
请学习PHP相关知识吧grin
down168
06/01/2010 19:44
我代码也解出来了 如何修改呢 谢谢
Bear 回复于 06/05/2010 20:34
试试eval(base64_decode(经base64_encode后的代码))
sean
05/28/2010 00:33
不好意思,代碼是解出來了,但是我要如何修改代碼後,能正常的執行程序?
Bear 回复于 05/28/2010 13:22
最简单的方法就是：你如何解，你就如何还原
追风
05/25/2010 23:49
您好,我想开发一个手机java的小程序,不知道你有没有兴趣,具体情况qq联系:438661567,朱先生.
Bear 回复于 05/28/2010 13:22
没做个这样的项目，不好意思
proxy2008 Email
05/22/2010 13:40
请问博主，顶楼中<?php    if (!function_exists("  这种格式的加密文件要怎么解呢？能不能教教我，我下载了一个WP模板，怎么都解不开。
Bear 回复于 05/22/2010 17:40
能贴下代码么？
test
04/30/2010 15:31
貌似不可以呀？  我这里显示是空白
Bear 回复于 05/28/2010 13:23
肯定是什么地方出错了
help
04/17/2010 13:52
不行啊,怎么回事？
Bear 回复于 04/18/2010 16:14
什么症状？
hulei778
04/16/2010 15:35
那个输出 是什么意思？我没弄懂
Bear 回复于 04/16/2010 17:36
eval替换成echo
eval = 执行代码
echo = 显示代码
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