Need Help : Bruteforce NTLM + Challenge

[General.TerroR!]

But there's an option for NTLM ? So why not NTLM + challenge ( salt ). Oh well.

Quoting this :

2.3 The NTLM challenge

The biggest difference between the way the LM and the NTLM hashing mechanism works is the challenge. In NTLM the challenge acts like a a salt in other cryptographic implementations. This throws a major wrench in our precomputing table designs, adding 2 64 permutations to the equation.