Loly

Background

Come play with Loly. Loly is nice.

• Author: SunCSR Team

• Released on: Dec 10, 2020

• Difficulty: Intermediate

Service Enumeration

As usual, scan the machine for open ports via rustscan!

Rustscan Result:

According to rustscan result, we have one port is opened:

Ports Open	Service
80	nginx 1.10.3

HTTP on Port 80

Always brute force hidden directory in a web server via gobuster!

Gobuster Result:

Found /wordpress directory.

WordPress Enumeration:

Add loly.lc domain to /etc/hosts:

WPScan:

Found user loly.

Brute forcing wp-login.php:

Successfully brute forced loly's password!

• Username:loly
• Password:fernando

Initial Foothold

1. Login to http://loly.lc/wordpress/wp-login.php:

• Username:loly
• Password:fernando

1. Upload a ziped PHP reverse shell via AdRotate plugin:

1. Setup a nc listener and trigger the PHP reverse shell:

And I'm www-data!

local.txt:

Privilege Escalation

www-data to loly

Found MySQL credential in /var/www/html/wordpress/wp-config.php:

• Username:wordpress
• Password:lolyisabeautifulgirl

MySQL Enumeration:

Nothing useful in MySQL.

Found user loly in this machine.

Maybe password reuse??

• Username:loly
• Password:lolyisabeautifulgirl

And we're user loly!!

loly to root

Kernel Exploit:

As we can see, the kernel version is quite old, and may suffer some kernel exploits.

The 45010.c exploit seems like is the perfect exploit for this machine! Let's mirror that C exploit.

Since the target machine has gcc installed, I'll transfer the C exploit and compile it from the target machine.

And we're root! :D

Rooted

proof.txt:

Conclusion

What we've learned:

1. Directory Enumeration
2. WordPress Enumeration (wpscan)
3. WordPress User Brute Forcing
4. Exploiting WordPress Plugin (AdRotate)
5. Privilege Escalation via Reused Password Which Found in wp-config.php
6. Privilege Escalation via Kernel Exploit