Skip to content

Command line tool to extract/decrypt the password that was stored in the LSA by SysInternals AutoLogon

Notifications You must be signed in to change notification settings

securesean/DecryptAutoLogon

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

3 Commits
 
 
 
 
 
 
 
 

Repository files navigation

This tool can extract/decrypt the password that was stored in the LSA by SysInternals AutoLogon. I made this to be used with Cobalt Strike's execute-assembly: execute assembly screen shot Compiled with .NET 3.0 (Windows Vista's default)+. Needs to be run as SYSTEM. Not just as a high intgrity process because the special registry keys need are only visible to SYSTEM and can only be decyrpted by SYSTEM.

Why?

In order to support Kiosk mode Windows needs to keep the user's password in a reversable format. This was being kept at HKLM\Software\Microsoft\Windows NT\CurrentVersion\Winlogon under "DefaultUserName" and "DefaultPassword" . Autologon was updated to store the passwords in the LSA Secrets registry keys that are only visible to SYSTEM. keithga provided a binary that popped a Message but no source code or command line version.

How it works

Through pInvoke calls:

  • LSAOpenPolicy()
  • LsaRetrievePrivateData()

Credits

So thanks to who actually did the work: keithga, frohwalt

Download

Compiled Version HERE

About

Command line tool to extract/decrypt the password that was stored in the LSA by SysInternals AutoLogon

Resources

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages