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Related: ACL, admin, code, crack, hack, key, secure, recover, rescue, reset, word

==Microsoft Windows
$ net.exe user USERNAME * /domain #reset a domain password
$ net.exe user USERNAME * #reset a local password

$ control userpasswords2

$ rundll32.exe keymgr.dll, KRShowKeyMgr

IHTeam.net/eden-live >>Welcome to the Eden Project! This small distribution was born to retrive passwords and sensitive files on Windows and Unix partitions.

Ophcrack.sf.net >>Ophcrack is a Windows password cracker based on a time-memory trade-off using rainbow tables. This is a new variant of Hellman's original trade-off, with better performance. It recovers 99.9% of alphanumeric passwords in seconds.

CDSlow.WebHost.ru/ntpwedit >>NTPWEdit based on sources from The Offline NT Password Editor (chntpw version 0.99.4 070409 (decade)) (c) 1997-2007 Petter Nordahl-Hagen. In fact, NTPWEdit is a Win32 GUI port of chntpw.

HowToGeek.com/howto/windows-vista/reset-your-forgotten-password-the-easy-way-using-the-ultimate-boot-cd-for-windows/

$ chntpw -l SAM #Change your NT, 2k/2000, XP, 2003, Vista, 2008

Home.EUNet.no/pnordahl/ntpasswd/bootdisk.html >>Offline NT Password & Registry Editor, Bootdisk / CD

Pogostick.net/~pnh/ntpasswd
"'
    * This is a utility to (re)set the password of any user that has a valid (local) account on your Windows NT/2k/XP/Vista etc system.
    * You do not need to know the old password to set a new one.
    * It works offline, that is, you have to shutdown your computer and boot off a floppydisk or CD or another system.
    * Will detect and offer to unlock locked or disabled out user accounts!
    * There is also a registry editor and other registry utilities that works under linux/unix, and can be used for other things than password editing.
'"


Ophcrack.sf.net >>Ophcrack is a free Windows password cracker based on rainbow tables. It is a very efficient implementation of rainbow tables done by the inventors of the method. It comes with a Graphical User Interface and runs on multiple platforms.

www.CGSecurity.org/wiki/Chntpw_for_Dos >>NTFS driver & Change a NT password from MSDOS (March 25, 2002)

NoBodix.org/seb/win2003_adminpass.html >>How to reset the Domain Admin Password under Windows 2003 Server

==GNU
HowToGeek.com/howto/linux/reset-your-forgotten-ubuntu-password-in-2-minutes-or-less


Blog.Dipinkrishna.info/2009/09/recover-your-linux-root-password.html
"'
1. Reboot your system and at the GRUB press "e". Edit the first line and make sure it says "linux single". Then press "b" to boot the new entry line.

2. You will now have access to a BASH prompt. Enter the following commands:


cd /etc
nano passwd


and look for a line somewhere at the top of the file that looks like this:


root:x:0:0:root:/root:/bin/bash


You must remove the "x" from that line so it will look like this:


root::0:0:root:/root:/bin/bash


And save the file.

3. Run the following command:


nano shadow


Edit the first line in the shadow file by removing the encrypted password. The line must now look exactly like this:

root::::


Now save the file.

4. Reboot the system and log in as a normal user, then set your new root password using the following commands:


$ sudo su
$ passwd
'"