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Darah_2Darah_1

Selasa, 10 Agustus 2010

Bingung, apa ni ya Maksudnya??

Aku kan sekarang gi sekolah d luar negeri (LEBAY,... ^_^ ^_^), truss aku tanya d tempat diskusi kayak gni :

password generated with Wordpress
technology?
how to decrypt?
for example:
admin:$P$9UNhia0YtfZBjpIxbzHZMsuL.SXrU9.


habis tu ada yang jawab kayak gni :

Need the salt and it its word press look at the source for the hashing to get an idea of what other information you need...but really u need the salt to crack them, unless they changed out they generate the hash of a password. Otherwise you can crack the salt as well and make it a bitch lol.

Someone correct me or confirm this please.

<?php
class PasswordHash {
var $itoa64;
var $iteration_count_log2;
var $portable_hashes;
var $random_state;

function PasswordHash($iteration_count_log2, $portable_hashes)
{
$this->itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';

if ($iteration_count_log2 < 4 || $iteration_count_log2 > 31)
$iteration_count_log2 = 8;
$this->iteration_count_log2 = $iteration_count_log2;

$this->portable_hashes = $portable_hashes;

$this->random_state = microtime() . uniqid(rand(), TRUE); // removed getmypid() for compability reasons
}

function get_random_bytes($count)
{
$output = '';
if ( @is_readable('/dev/urandom') &&
($fh = @fopen('/dev/urandom', 'rb'))) {
$output = fread($fh, $count);
fclose($fh);
}

if (strlen($output) < $count) {
$output = '';
for ($i = 0; $i < $count; $i += 16) {
$this->random_state =
md5(microtime() . $this->random_state);
$output .=
pack('H*', md5($this->random_state));
}
$output = substr($output, 0, $count);
}

return $output;
}

function encode64($input, $count)
{
$output = '';
$i = 0;
do {
$value = ord($input[$i++]);
$output .= $this->itoa64[$value & 0x3f];
if ($i < $count)
$value |= ord($input[$i]) << 8;
$output .= $this->itoa64[($value >> 6) & 0x3f];
if ($i++ >= $count)
break;
if ($i < $count)
$value |= ord($input[$i]) << 16;
$output .= $this->itoa64[($value >> 12) & 0x3f];
if ($i++ >= $count)
break;
$output .= $this->itoa64[($value >> 18) & 0x3f];
} while ($i < $count);

return $output;
}

function gensalt_private($input)
{
$output = '$P$';
$output .= $this->itoa64[min($this->iteration_count_log2 +
((PHP_VERSION >= '5') ? 5 : 3), 30)];
$output .= $this->encode64($input, 6);

return $output;
}

function crypt_private($password, $setting)
{
$output = '*0';
if (substr($setting, 0, 2) == $output)
$output = '*1';

if (substr($setting, 0, 3) != '$P$')
return $output;

$count_log2 = strpos($this->itoa64, $setting[3]);
if ($count_log2 < 7 || $count_log2 > 30)
return $output;

$count = 1 << $count_log2;

$salt = substr($setting, 4, 8);
if (strlen($salt) != 8)
return $output;

if (PHP_VERSION >= '5') {
$hash = md5($salt . $password, TRUE);
do {
$hash = md5($hash . $password, TRUE);
} while (--$count);
} else {
$hash = pack('H*', md5($salt . $password));
do {
$hash = pack('H*', md5($hash . $password));
} while (--$count);
}

$output = substr($setting, 0, 12);
$output .= $this->encode64($hash, 16);

return $output;
}

function gensalt_extended($input)
{
$count_log2 = min($this->iteration_count_log2 + 8, 24);
# This should be odd to not reveal weak DES keys, and the
# maximum valid value is (2**24 - 1) which is odd anyway.
$count = (1 << $count_log2) - 1;

$output = '_';
$output .= $this->itoa64[$count & 0x3f];
$output .= $this->itoa64[($count >> 6) & 0x3f];
$output .= $this->itoa64[($count >> 12) & 0x3f];
$output .= $this->itoa64[($count >> 18) & 0x3f];

$output .= $this->encode64($input, 3);

return $output;
}

function gensalt_blowfish($input)
{
$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';

$output = '$2a$';
$output .= chr(ord('0') + $this->iteration_count_log2 / 10);
$output .= chr(ord('0') + $this->iteration_count_log2 % 10);
$output .= '
$i = 0;
do {
$c1 = ord($input[$i++]);
$output .= $itoa64[$c1 >> 2];
$c1 = ($c1 & 0x03) << 4;
if ($i >= 16) {
$output .= $itoa64[$c1];
break;
}

$c2 = ord($input[$i++]);
$c1 |= $c2 >> 4;
$output .= $itoa64[$c1];
$c1 = ($c2 & 0x0f) << 2;

$c2 = ord($input[$i++]);
$c1 |= $c2 >> 6;
$output .= $itoa64[$c1];
$output .= $itoa64[$c2 & 0x3f];
} while (1);

return $output;
}

function HashPassword($password)
{
$random = '';

if (CRYPT_BLOWFISH == 1 && !$this->portable_hashes) {
$random = $this->get_random_bytes(16);
$hash =
crypt($password, $this->gensalt_blowfish($random));
if (strlen($hash) == 60)
return $hash;
}

if (CRYPT_EXT_DES == 1 && !$this->portable_hashes) {
if (strlen($random) < 3)
$random = $this->get_random_bytes(3);
$hash =
crypt($password, $this->gensalt_extended($random));
if (strlen($hash) == 20)
return $hash;
}

if (strlen($random) < 6)
$random = $this->get_random_bytes(6);
$hash =
$this->crypt_private($password,
$this->gensalt_private($random));
if (strlen($hash) == 34)
return $hash;

return '*';
}

function CheckPassword($password, $stored_hash)
{
$hash = $this->crypt_private($password, $stored_hash);
if ($hash[0] == '*')
$hash = crypt($password, $stored_hash);

return $hash == $stored_hash;
}
}

?>


^code used to generate the hash, may not be the same as your version but ya...


<?php
$wp_hasher = new PasswordHash(8, TRUE);

$password_hashed = '$P$B55D6LjfHDkINU5wF.v2BuuzO0/XPk/';
$plain_password = 'test';

if($wp_hasher->CheckPassword($plain_password, $password_hashed)) {
echo "YES, Matched";
}
else {
echo "No, Wrong Password";
}
?>


^code from wordpress that can be modified to brute a password, just a fyi lol

That should be everything you need :D


habis itu aku bingung banget apa tu maksud dari jawaban orang tu ya,,....
soalnya bahasa inggris minim banget, jdi ya agak bingung,,,,...

2 komentar:

  1. walah sangar apik banget nih mas ... keren amit ...

    BalasHapus
  2. MD5(WordPress)

    * Digunakan di WordPress.
    * Panjang : 34 Karakter.
    * Deskripsi : Hash dimulai dengan tanda $P$ , kemudian diikuti dengan satu karakter (Paling sering huruf “B”), kemudian diikuti dengan salt (8 karakter acak, di contoh kita saltnya adalah string “12345678″), kemudian diikuti oleh Hashnya.
    * Algorithm : Sebenarnya ini adalah loop yang memanggil algoritma md5 sebanyak 8192 kali.
    * Contoh : $P$B123456780BhGFYSlUqGyE6ErKErL01

    bisa baca disini mas..
    http://my.opera.com/l0calhost/blog/2011/06/09/macam-hash-password

    BalasHapus