Simple solution to phpjm encryption problem free phpjm decryption tool

You may have seen several recent posts based on Empire CMS Developed templates , It's all done SEO Optimized processing template , I bought another one recently , But when scanning the back door, I found that many files were encrypted , It's encrypted phpjm encryption

See more about phpjm encryption The article , There is no problem when using , But in order to check whether there is a back door or decrypt .

I searched the Internet , Found most of phpjm Decrypt See more about phpjm Decrypt The tools of the article are all charged , But it's not expensive , But I used to see this way of encrypting files , Or study whether there is a once and for all solution phpjm Encryption method ？ So I found this free in Baidu phpjm Decrypt See more about phpjm Decrypt Article code .

The way to use it is to run the decrypted file through the browser , Then a decrypted php file .

< !--?php $file = 'phpjm.php'; // The file name to decrypt  $fp = fopen($file, 'r'); $str = fread($fp, filesize($file)); fclose($fp); copy($file, '0_'.$file); $n = 1; while($n < 10){ $code = strdecode($str); if($n == 1){ $code = str_replace("__FILE__", "'0_$file'", $code); } $replace = '$decode'.$n.'=trim'; if(strpos($code, 'eval(') > 0){ $code = str_replace('eval(', $replace.'(', $code); }else{ preg_match("/@$(.*)($(.*),(.*)(/isU", $code, $res); $code = str_replace($res[3], "'$replace", $code); } $code = preg_replace('/$(.*)=false;(.*?)();/', '', $code); // Last version  $code = preg_replace('/||@$(.*?)();/', '|| print("ok");', $code); $code = destr($code); $tmp_file = 'detmp'.$n.'.php'; file_put_contents($tmp_file, $code); include($tmp_file); $val = 'decode'.$n; $str = $$val; unlink($tmp_file); if(strpos($str, ';?-->') === 0){
		$decode = $str;
		break;
	}
	
	$str = "< !--?phprn". $str; $n++; } $decode = preg_replace("/^(.*)exit('Access Denied'); /", "<?phprn", $decode); $del = strrchr($decode, 'unset'); $decode = str_replace($del, "rn?-->", $decode);
file_put_contents($file.'.de.php' ,$decode);
unlink('0_'.$file);
echo 'done';
 

function val_replace($code, $val, $deval){
    $code = str_replace('$'.$val.',', '$'.$deval.',', $code);
    $code = str_replace('$'.$val.';', '$'.$deval.';', $code);
    $code = str_replace('$'.$val.'=', '$'.$deval.'=', $code);
    $code = str_replace('$'.$val.'(', '$'.$deval.'(', $code);
    $code = str_replace('$'.$val.')', '$'.$deval.')', $code);
    $code = str_replace('$'.$val.'.', '$'.$deval.'.', $code);
    $code = str_replace('$'.$val.'/', '$'.$deval.'/', $code);
    $code = str_replace('$'.$val.'>', '$'.$deval.'>', $code);
    $code = str_replace('$'.$val.'<', '$'.$deval.'<', $code);
    $code = str_replace('$'.$val.'^', '$'.$deval.'^', $code);
    $code = str_replace('$'.$val.'||', '$'.$deval.'||', $code);
    $code = str_replace('($'.$val.' ', '($'.$deval.' ', $code);
    return $code;
}
 
function fmt_code($code){
    global $vals,$funs;
    preg_match_all("/$[0-9a-zA-Z[]']+(,|;)/iesU", $code, $res);
    foreach($res[0] as $v){
        $val = str_replace(array('$',',',';'), '', $v);
        $deval = destr($val, 1);
        $vals[$val] = $deval;
        $code = val_replace($code, $val, $deval);
    }
 
    preg_match_all("/$[0-9a-zA-Z[]']+=/iesU", $code, $res);
    foreach($res[0] as $v){
        $val = str_replace(array('$','='), '', $v);
        $deval = destr($val, 1);
        $vals[$val] = $deval;
        $code = val_replace($code, $val, $deval);
    }
 
    preg_match_all("/functions[0-9a-zA-Z[]]+(/iesU", $code, $res);
    foreach($res[0] as $v){
        $val = str_replace(array('function ','('), '', $v);
        $deval = destr($val, 1);
        $funs[$val] = $deval;
        $code = str_replace('function '.$val.'(', 'function '.$deval.'(', $code);
        $code = str_replace('='.$val.'(', '='.$deval.'(', $code);
        $code = str_replace('return '.$val.'(', 'return '.$deval.'(', $code);
    }
    return $code;
}
 
function strdecode($str){
    $len = strlen($str);
    $newstr = '';
    for($i=0; $i<$len; $i++){ $n = ord($str[$i]); $newstr .= decode($n); } return $newstr; } function decode($dec){ if(($dec > 126 || $dec<32) && $dec<>13 && $dec<>10){
        return '['.$dec.']';
    }else{
        return chr($dec);
    }
}
 
function destr($str, $val=0){
    $k = 0;
    $num = '';
    $n = strlen($str);
    $code = '';
    for($i=0; $i<$n; $i++){ if($str[$i] == '[' && ($str[$i+1]==1 || $str[$i+1]==2)){ $k = 1; }elseif($str[$i] == ']' && $k==1){ $num = intval($num); if($val==1){ $num = 97 + fmod($num, 25); } $code .= chr($num); $k = 0; $num = null; }else{ if($k == 1){ $num .= $str[$i]; }else{ $code .= $str[$i]; } } } return $code; } ?>