Task - Install and run John The Ripper Password Cracker


1) Locate and install the "John the Ripper" package.

# cd /usr/local/pkg
# pkgadd -d john-1.6-sol8-sparc-local 

The following packages are available:
  1  SMCjohn     john
				   (sparc) 1.6

2) Create 3-4 users with various passwords.

# useradd john1
# passwd john1
New password: 

# useradd john2
# passwd john2
New password: 

# useradd john3
# passwd john3
New password: 

3) Run "John the Ripper" on the /etc/shadow file.

# cd /usr/local/run
# ./john /etc/shadow
Loaded 2 passwords with 2 different salts (Standard DES [32/32 BS])
john             (john2)

4) Notice how processor intensive "John the Ripper" is by using the prstat command.

# prstat

PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS/NLWP       
____________________________________________________________________
24959 root     6544K 6104K run     10    0   0:01.20  96% john/1
19189 root       27M   72M sleep   59    0   0:02.34 0.4% Xsun/1
19275 root     8248K 6000K sleep   48    0   0:00.16 0.2% dtterm/1

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