Sunday, 14 August 2011

John the Ripp... oh wait, it's not working

John the Ripper ( is a fantastic Unix based password/hash cracker. If you want to crack md4 hashes then you need the jumbo install, which can fail without the correct bits installed beforehand.

This error:
/usr/bin/ld: cannot find -lcrypto

means you are missing libssl-dev package, which is not something that trips up the standard JtR install. Run this command to fix it all:

apt-get install libssl-dev

It should then complete the make process just fine.