Bob and Alice in Kernel-land - Part 3

Mon, 14 Oct 2024 12:00:00 +0200

This is the last part of a 3-part series on Bob and Alice in Kernel-land. You can find Part 1 here and Part 2 here.

CrowdStrike podcast “Adversary Universe Podcast” just released a new episode entitled “The Kernel’s Essential Role in Cybersecurity Defense” featuring Adam Myers w/ Alex Ionescu, who is the original architect of the CrowdStrike Falcon kernel agent and also known for being the co-author of “Windows Internals” book and to be among the most knowledgeable people when it comes to understanding how the Windows (or any other OS tbh) kernel works.

Bob and Alice in Kernel-land - Part 2

Fri, 23 Aug 2024 12:00:00 +0200

It’s been a month since I wrote Part 1 of “Bob and Alice in Kernel-land”. As expected, we saw minimal constructive feedback from vendors, with a few notable exceptions. Sophos provided the most detailed information about their drivers, while CrowdStrike offered valuable insights into their kernel architecture, including the use of Microsoft’s Winsock kernel file transfer. This feature, introduced in Windows Vista+, was designed to replace the outdated Transport Driver Interface (TDI). It’s reasonable to assume that the existence of this capability has significantly contributed to more operations being moved to kernel mode, as leveraging TDI posed considerable challenges without compromising stability.

Kernel on Matt Suiche

Bob and Alice in Kernel-land - Part 3

Bob and Alice in Kernel-land - Part 2