Micro Shield PHP script encryption expert php decryption algorithm_PHP tutorial

Copy code The code is as follows:

/***********************************
*Weidun PHP encryption expert decryption algorithm By: Neeao
*http://Neeao.com
*2009-09-10
****************************** *****/

$filename="play-js.php";//The file to be decrypted
$lines = file($filename);//Lines 0, 1, 2

//First base64 decryption
$content="";
if(preg_match("/O0O0000O0('.*')/",$lines[1],$y))
{
$content=str_replace( "O0O0000O0('","",$y[0]);
$content=str_replace("')","",$content);
$content=base64_decode($content);
}
//Find the key in the first base64 decrypted content
$decode_key="";
if(preg_match("/),'.*',/",$content, $k))
{
$decode_key=str_replace("),'","",$k[0]);
$decode_key=str_replace("',","",$decode_key );
}
//Find the length of the string to be intercepted
$str_length="";
if(preg_match("/,d*),/",$content,$k))
{
$str_length=str_replace("),","",$k[0]);
$str_length=str_replace(",","",$str_length);
}
//Intercept the encrypted ciphertext of the file
$Secret=substr($lines[2],$str_length);
//echo $Secret;

//Restore the secret directly Text output
echo "";
?>

Weidian PHP script cracking

Copy code The code is as follows:

function get_filetree($path ){
$tree = array();
foreach(glob($path . '/*') as $single){
if(is_dir($single)){
$tree = array_merge($tree,get_filetree($single));
} else {
$tree[] = $single;
}
}
return $tree;
}
function eval_decode($File)
{
$Lines = file($File);
$Content;
if(preg_match("/O0O0000O0('.*')/", $Lines [1], $S)){
$Content = str_replace("O0O0000O0('", "", $S[0]);
$Content = str_replace("')", "", $ Content);
$Content = base64_decode($Content);
} else {
return "file not encode!";
}
$Key;
if(preg_match(" /),'.*',/", $Content, $K)){
$Key = str_replace("),'", "", $K[0]);
$Key = str_replace ("',", "", $Key);
} else {
return "not decode key!";
}
$Length;
if(preg_match("/, d*),/", $Content, $K)){
$Length = str_replace("),", "", $K[0]);
$Length = str_replace(",", "", $Length);
} else {
return "not decode base64 string!";
}
$Secret = substr($Lines[2], $Length);
$Decode = "";
file_put_contents($File, $Decode);
return " file decode success!";
}

$filelist = get_filetree("D:/PHPnow/htdocs/1");
foreach($filelist as $value){
echo $ value." :tt".eval_decode($value) . "nr
";
}
?>

http://www.bkjia.com/PHPjc/322493.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/322493.htmlTechArticleCopy the code as follows: ?php /****************** ******************* *Weidun PHP encryption expert decryption algorithm By: Neeao *http://Neeao.com *2009-09-10 ****** *****************************...