JTR cluster

From BackTrack Linux

Building a John the Ripper Cluster in Backtrack5 R2 & R3

• In this tutorial we are going to build a cluster that will aid us in cracking hashes using John the Ripper.
• The first thing we want to do is install libssl-dev and mpich2 after which we configure it. (Note: secretword must be the same on each machine.)

root@bt:~# apt-get install mpich2 libssl-dev
root@bt:~# touch /etc/mpd.conf
root@bt:~# chmod 600 /etc/mpd.conf 
root@bt:~# echo "secretword=bt" >> /etc/mpd.conf
root@bt:~# touch mpd.hosts
root@bt:~# echo "192.168.1.69:1" >> mpd.hosts 
root@bt:~# chmod 600 mpd.hosts
root@bt:~# mpdboot
root@bt:~# mpdtrace 
bt
root@bt:~# mpdallexit 

• Now we install the the MPI version of John the Ripper.

root@bt:~/Desktop# wget http://www.bindshell.net/tools/johntheripper/john-1.7.3.1-all-2-mpi8.tar.gz
root@bt:~/Desktop# tar xvfz john-1.7.3.1-all-2-mpi8.tar.gz 
root@bt:~/Desktop/john-1.7.3.1-all-2-mpi8/src# make clean linux-x86-sse2
root@bt:~# mv -f john-1.7.3.1-all-2-mpi8 /pentest/passwords/john-mpi

• After installing the MPI version of John the Ripper we configure our /etc/hosts file.

root@bt:~# nano /etc/hosts                                                           
127.0.0.1       localhost
192.168.1.69    server
192.168.1.70    node1


# The following lines are desirable for IPv6 capable hosts
::1     localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

NOTE: Do the exact same thing on the client.

• Once we have the server and the client setup it's time to enable our SSH server and transfer the configuration files from the server to the client.

root@bt:~# ssh root@192.168.1.70 mkdir -p /root/.ssh
root@bt:~# cat /root/.ssh/id_rsa.pub | ssh root@192.168.1.70 'cat>>.ssh/authorized_keys'
root@bt:~# scp /root/mpd.hosts root@192.168.1.70:/root/
root@bt:~# scp /etc/mpd.conf root@192.168.1.70:/etc/
root@bt:~# scp /etc/hosts root@192.168.1.70:/etc/

• If we start the cluster we should see our server and client.

root@bt:~# mpdboot -v --file=/root/mpd.hosts -n 2
running mpdallexit on bt
LAUNCHED mpd on bt  via  
RUNNING: mpd on bt
LAUNCHED mpd on 192.168.1.70  via  bt2
RUNNING: mpd on 192.168.1.70


root@bt:~# mpdtrace 
bt
bt2

• Now let's test our cluster.

root@bt:~# echo "admin:21232f297a57a5a743894a0e4a801fc3" > /root/test
root@bt:~# scp /root/test root@192.168.1.70:/root/
root@bt:~# mpiexec -host 192.168.1.69 -np 2 /pentest/passwords/john-mpi/run/john --format:raw-MD5  /root/test
Loaded 1 password hash (Raw MD5 [raw-md5])
admin            (admin)
admin            (admin)
thread: 1 guesses: 1  time: 0:00:00:00 100% (1)  c/s: 160  trying: admin - admins
thread: 0 guesses: 1  time: 0:00:00:00 100% (1)  c/s: 133  trying: admin - admins