chntpw Package Description

This little program provides a way to view information and change user passwords in a Windows NT/2000 user database file. Old passwords need not be known since they are overwritten. In addition it also contains a simple registry editor (same size data writes) and an hex-editor which enables you to fiddle around with bits and bytes in the file as you wish.

If you want GNU/Linux bootdisks for offline password recovery you can add this utility to custom image disks or use those provided at the tools homepage.

chntpw Homepage | Kali chntpw Repo

  • Author: Petter Nordahl-Hagen
  • License: GPLv2

Tools included in the chntpw package

chntpw – NT SAM password recovery utility

root@kali:~# chntpw -h
chntpw version 1.00 140201, (c) Petter N Hagen
chntpw: change password of a user in a Windows SAM file,
or invoke registry editor. Should handle both 32 and 64 bit windows and
all version from NT3.x to Win8.1
chntpw [OPTIONS] <samfile> [systemfile] [securityfile] [otherreghive] [...]
 -h          This message
 -u <user>   Username or RID (0x3e9 for example) to interactively edit
 -l          list all users in SAM file and exit
 -i          Interactive Menu system
 -e          Registry editor. Now with full write support!
 -d          Enter buffer debugger instead (hex editor),
 -v          Be a little more verbose (for debuging)
 -L          For scripts, write names of changed files to /tmp/changed
 -N          No allocation mode. Only same length overwrites possible (very safe mode)
 -E          No expand mode, do not expand hive file (safe mode)

Usernames can be given as name or RID (in hex with 0x first)

See readme file on how to get to the registry files, and what they are.
Source/binary freely distributable under GPL v2 license. See README for details.
NOTE: This program is somewhat hackish! You are on your own!

chntpw Usage Example

root@kali:~# coming soon
Menu