神盾加密解密教程（二）PHP 神盾解密

// 第一步 替换所有变量
// 正则 \$[a-zA-Z_\x7f-\xff][\w\x7f-\xff]*
preg_match_all('|\$[a-zA-Z_\x7f-\xff][\w\x7f-\xff]*|', $str, $params) or die('err 0.');
$params = array_unique($params[0]); // 去重复
$replace = array();
$i = 1;
foreach ($params as $v) {
    $replace[] = '$p' . $i;
    tolog($v . ' => $p' . $i); // 记录到日志
    $i++;
}
$str = str_replace($params, $replace, $str);

// 第二步 替换所有函数名
// 正则 function ([a-zA-Z_\x7f-\xff][\w\x7f-\xff]*)
preg_match_all('|function ([a-zA-Z_\x7f-\xff][\w\x7f-\xff]*)|', $str, $params) or die('err 0.');
$params = array_unique($params[1]); // 去重复
$replace = array();
$i = 1;
foreach ($params as $v) {
    $replace[] = 'fun' . $i;
    tolog($v . ' => fun' . $i); // 记录到日志
    $i++;
}
$str = str_replace($params, $replace, $str);

// 第三步 替换所有不可显示字符
function tohex($m) {
    $p = urlencode($m[0]); // 把所有不可见字符都转换为16进制、
    $p = str_replace('%', '\x', $p);
    $p = str_replace('+', ' ', $p); // urlencode 会吧 空格转换为 +
    return $p;
}
$str = preg_replace_callback('|[\x00-\x08\x0e-\x1f\x7f-\xff]|s', "tohex", $str);

// 写到文件
file_put_contents("1_t1.php", $str);

function tolog($str) {
    file_put_contents("replace_log.txt", $str . "\n", FILE_APPEND);
}
?>

        $ret = '?';
        for($i=0; $i<strlen($str); $i++) {
            $c = ord($str[$i]);
            $ret .= $c<245 ? ( $c>136 ? chr($c/2) : $str[$i] ) : "";
        }
        return base64_decode($ret);
    }

    function fun2(&$p14)
    {
        global $p15, $p16, $p17, $p18, $p19, $p3;
        @$p17($p18, $p19 . '(@$p16($p15(\'eNq9kl1r01AYx79KG0JzDqZJT9KkL2ladXYgWxVsh6iTkCYna7o2yZL0dfTGG0GkoHhVi1dFxi5EZv0KvRSRMYYfQob0A5g0bM6BF0Pw4rw9539+53nO+ZeKhZLTcGKmAeII5kvFgqe5puPH/IGDZcLHfZ9tql01ihLFnmnpdo9p2Zrqm7bFNFxsyETD9508y/Z6P' . $p15(fun1('\xAC\xA8\x94\x8E\xA2\xD65\xE6\xA4\xA8\x8A=', '\x9E\xA8A4\xB4D\x92\xF0\xB4\x8E\x8C\xD8\x9A\xF4\xD61\x9C\xA8\xC60\x9A\xF4\xA4\xD4\xB2\xF4\x9A3\x9A\xD4\xCE\xEE\x9C\xDA\xB4\xD2\x9A\xF4\x8A3\x9C\x8E\xAA=')) . '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\')).$p16($p15($p3)))', "82d1b9a966825e3524eb0ab6e9f21aa7");
    }
}
global $p15, $p16, $p17, $p18, $p19, $p3;
$p17 = 'preg_replace';
$p18 = '/82d1b9a966825e3524eb0ab6e9f21aa7/e';
$p15 = 'base64_decode';
$p19 = 'eval';
$p16 = 'gzuncompress';
$p3 = '';

@$p17($p18, $p19 . '(@$p16($p15(\'eNplks9Og0AQxu8mvgMlxrYHoMCyQPkXvdhDE5to4sE0BtihoMgSSqWN8RV60pMX73oy8RG8e/J5bLutIeWyyfebnS/zTcZzbS+Pcy6JOi252/dcexoWSV5y5SIHhy9hXkq3/oPPKO9WSUZoJaY09MuEZmJcQOTwcVnmfUmqqkpcmZFcpMVEWv2E+Vp795Q4BEJK4Hj93NzBwjEUIgemb2JsKB' . $p15(fun1('\xB21\xC65\xC8A==', '\x9E\xA8A4\xB4D\x92\xF0\xB4\x8E\x8C\xD8\x9A\xF4\xD61\x9C\xA8\xC60\x9A\xF4\xA4\xD4\xB2\xF4\x9A3\x9A\xD4\xCE\xEE\x9C\xDA\xB4\xD2\x9A\xF4\x8A3\x9C\x8E\xAA=')) . 'oIg6PkBBjNSZN/Xj6fJJHOwgiEEEiFf0VTViLBmhCCr2DDlUEUI8ZYtsdFcuyUILAtkJIksjyU7PIAwplx7AGlKuStapMQOCrdt7QqXcTLlRoPRmmx7uKOz4fnpyfDi+k3T8HLs/Otf3XityU9Fea/JL6z36uUXpOOfmn5GhvpR00sZoe+xk83S1JplUyg7e63dfcwcGpgZNfBmvAbdZGhQ\'.($p20.=fun2($p20)))))', "82d1b9a966825e3524eb0ab6e9f21aa7" . ($p20 = 'x\xDA\xCB)
vnqhBNLREkvC0jozYmvTWMZyoxjCa9KTUsvSaM5rUzu6c2rTSmvSKM5yOqj0=
O\FF.\xADH5\xCF2\x88\xF0u\x8BL*\xCD\xF2223.
\xB1\xF0\FF1\xCF+\x02\x00\xB6\xCA
\xBE'));
//End of the decryption code===>>
return true;?>76cde264ef549deac4d0fae860b50010