Breaking the x86 Instruction Set
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- Recommended by 15 people: 9 on Hacker News, 2 on Lobsters, 3 in engineering communities and 1 curated list.
- A classic. People kept recommending it from 2017 to 2021.
- Presented by Christopher Domas, security researcher
Advanced. Deep dive for people who know the field.
381K views9 years ago15 recommendations
SecurityHardwareCPUs and computer architectureExploits and vulnerabilitiesReverse engineering
Christopher Domas demonstrates how to use page fault analysis and processor fuzzing to exhaustively search for undocumented x86 instructions.
A processor is not a trusted black box for running code; on the contrary, modern x86 chips are packed full of secret instructions and hardware bugs. In this talk, we'll demonstrate how page fault analysis and some creative processor fuzzing can be used to exhaustively search the x86 instruction set and uncover the secrets buried in your chipset. Full Abstract & Presentation Materials: blackhat.com/us-17/briefings.html#breaking-the-x86-instructi…Why it's here
15 people recommend thisWhat people say. Recommended as an entertaining and clever demonstration of finding hidden CPU instructions and the limitations of disassemblers.
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