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Before yesterdayXPN InfoSec Blog

LAPS 2.0 Internals

13 August 2023 at 10:03
This year, LAPS 2.0 was released by Microsoft, and thankfully it now comes built-in to Windows. This time it comes ready for use with Active Directory, as well as being supported in Azure AD aka Entra ID. In this post, we’ll look at how LAPS 2.0 for Active Directory works under the hood, so you can make those fresh recommendations to your clients, and prepare yourself for the inevitable question... β€œBut we just deployed LAPS.. what does LAPS 2.0 do differently?!”.

g_CiOptions in a Virtualized World

15 May 2022 at 06:43
With the leaking of code signing certificates and exploits for vulnerable drivers becoming common occurrences, adversaries are adopting the kernel as their new playground. And with Microsoft making technologies like Virtualization Based Security (VBS) and Hypervisor Code Integrity (HVCI) available, I wanted to take some time to understand just how vulnerable endpoints are when faced with an attacker set on escaping to Ring-0.

Object Overloading

15 February 2022 at 20:01
In this post we are going to look at one such technique that I thought was cool while playing around with the Windows Object Manager, and which should allow us to load an arbitrary DLL of our creation into a Windows process during initial execution, something that I've been calling "Object Overloading" for reasons which will hopefully become apparent in this post.

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