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SMMMmmmm


when root is not enough


Swimming, Diving, Hopefully not Drowning!

I got a super nice project, and for that I needed to learn how the SMM really works. Again I started dipping my toes in this ocean of knowledge and I hope I don’t get too excited and drown myself before even getting started ;) For the people who are not sure if they want to read all this:

TL;DR

In SMM, it is possible to modify SMM saved execution context. SMM also sets its own IDT, it is initialized by the BIOS (DXE) and tons of cool stuff.

Learning about the BIOS


or why do we discuss how to authenticate the user to the machine, but never the machine to the user


My path into low-level security

I have been away for a while as you may or may not have noticed and the reason for that is a great one! I am learning new things and as usual I will try to share my notes here. They are going to be chaotic and I can not give you any guarantee that I got it right, so please let me know if something looks weird ;)