write-up-lame.md

Lame

This is the write-up for the box Lame that was released at the 14th March 2017.

Let's put this in our hosts file:

10.10.10.3    lame.htb

Enumeration

Starting with a Nmap scan:

nmap -sC -sV -o nmap/lame.nmap 10.10.10.3

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 10.10.14.4
|      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.X - 4.X (workgroup: WORKGROUP)
Service Info: OSs: Unix, Linux; CPE: cpe:/o:linux:linux_kernel

Checking FTP

Anonymous login is allowed but there is nothing on the FTP service. Version of vsftp is 2.3.4 so we try the Metasploit module exploit/unix/ftp/vsftpd_234_backdoor but it does not work.

Checking SMB

Version of SMB is 3.0.20 so we try the Metasploit module exploit/multi/samba/usermap_script. It works an we get a shell as root!