March 2016 – harmj0y

Empire 1.5

Published March 31, 2016 by harmj0y

Three months have elapsed since the Empire 1.4 release, and we have some awesome new features for our next release! The notes for Empire 1.5 are below, but a quick warning- this release modifies part of the backend database schema, so do not apply this update if you have existing agents on your Empire server. You will need to run ./setup/reset.sh to reinitialize the database, and will likely need to rerun setup.sh or pip install flask to install the Flask dependencies necessary for the RESTful API. New Modules The core version of PowerView was updated with the newest version from PowerSploit’s dev branch. With…

Abusing GPO Permissions

Published March 17, 2016 by harmj0y

A friend (@piffd0s) recently ran into a specific situation I hadn’t encountered before: the domain controllers and domain admins of the environment he was assessing were extremely locked down, but he was able to determine that a few users had edit rights on a few specific group policy objects (GPOs). After a bit of back and forth, he was able to abuse this to take down his target, and we were able to integrate some new functionality into PowerView that facilitates this process. This post will cover these new features and demonstrate how to enumerate and abuse misconfigured GPOs in case you encounter…

Local Group Enumeration

Published March 9, 2016 by harmj0y

I’ve found that one of the most useful features of PowerView (outside of its user hunting capabilities) is its ability to enumerate local group membership on remote machines. I’ve spoken about this briefly before, and gave some details on its utilization of the ADSI WinNT Provider in the “Pass-the-Hash is Dead: Long Live Pass-the-Hash” post. My colleague @sixdub wrote an excellent post titled “Derivative Local Admin” that shows the power this functionality can give attackers, and fellow ATD member @_wald0 expanded on this with his “Automated Derivative Administrator Search” post. This functionality has been indispensable on both our pentests and longer-term red-team engagements. I wanted…

PowerSCCM

Published March 1, 2016 by harmj0y

I’m taking a quick break from our Empire series to bring you something my ATD teammate Matt Nelson and myself have been working on over the last month or so- a project called PowerSCCM. This is the first primarily defensive-oriented post I’ve published, but fear not, more offensive material is in the hopper ;) Using Microsoft’s System Center Configuration Manager (SCCM) for unintended purposes has been on a people’s radar since Dave Kennedy’s “Owning One To Rule Them All” presentation at Defcon 20. Matt expanded on this type of material in his ShmooCon Firetalk “Red Team Upgrades: Using SCCM for Malware Deployment” and accompanying blog post. I’ve recently…

Month: March 2016

Empire 1.5

Abusing GPO Permissions

Local Group Enumeration

PowerSCCM