When life gives you exploits, you turn them into Beacon Object Files. 1. Back to BOFs I never thought I would say this, but after spending so much time in kernel land, it’s almost as if developing kernel functionality is easier than writing user land applications, especially when they need to fly under the radar. … Continue reading Kernel Karnage – Part 8 (Getting Around DSE)
Category: Red Team
Kernel Karnage – Part 7 (Out of the Lab and Back to Reality)
This week I emerge from the lab and put on a different hat. 1. Switching hats With Interceptor being successful in blinding $vendor2 sufficiently to run a meterpreter reverse shell, it is time to put on the red team hat and get out of the perfect lab environment. To do just that, I had to … Continue reading Kernel Karnage – Part 7 (Out of the Lab and Back to Reality)
Kernel Karnage – Part 6 (Last Call)
With the release of this blogpost, we’re past the halfway point of my internship; time flies when you’re having fun. 1. Introduction - Status Report In the course of these 6 weeks, I’ve covered several aspects of kernel drivers and EDR/AVs kernel mechanisms. I started off strong by examining kernel callbacks and why EDR/AV products … Continue reading Kernel Karnage – Part 6 (Last Call)
Kernel Karnage – Part 5 (I/O & Callbacks)
After showing interceptor's options, it’s time to continue coding! On the menu are registry callbacks, doubly linked lists and a struggle with I/O in native C. 1. Interceptor 2.0 Until now, I relied on the Evil driver to patch kernel callbacks while I attempted to tackle $vendor2, however the Evil driver only implements patching for … Continue reading Kernel Karnage – Part 5 (I/O & Callbacks)
Kernel Karnage – Part 4 (Inter(ceptor)mezzo)
To make up for the long wait between parts 2 and 3, we're releasing another blog post this week. Part 4 is a bit smaller than the others, an intermezzo between parts 3 and 5 if you will, discussing interceptor. 1. RTFM & W(rite)TFM! The past few weeks I spent a lot of time getting … Continue reading Kernel Karnage – Part 4 (Inter(ceptor)mezzo)
Kernel Karnage – Part 3 (Challenge Accepted)
While I was cruising along, taking in the views of the kernel landscape, I received a challenge … 1. Player 2 has entered the game The past weeks I mostly experimented with existing tooling and got acquainted with the basics of kernel driver development. I managed to get a quick win versus $vendor1 but that … Continue reading Kernel Karnage – Part 3 (Challenge Accepted)
