Proactive Password Auditor 1.60 -
A password security test tool that's designed to
allow Windows NT, Windows 2000, Windows XP and
and Windows Server 2003-based systems administrators
to identify and close security holes in their networks.
Proactive Password Auditor helps secure networks by
executing an audit of account passwords, and
exposing insecure account passwords. If it is
possible to recover the password within a reasonable
time, the password is considered insecure. 
The software supports a few different methods of
obtaining password hashes for further attack/audit:
from dump files (generated by 3rd party tools like
pwdump/pwdump2/pwdump3), Registry of local computer,
binary Registry files (SAM and SYSTEM), memory of
local computer, and memory of remote computers
(Domain Controllers), including ones running Active
Directory. The product features brute-force and
dictionary attacks on LM and NTLM password hashes,
effectively optimized for speed, plus "rainbow"
attack, that uses pre-computed hash tables that
allow to find most passwords in minutes instead of
days or weeks
