Breaking the x86 Instruction Set

> I trust its disassembler (especially for mainstream languages) more than almost any other disassembler Might I suggest Christopher Domas' Black Hat talk "Breaking the x86 ISA", along the way of which he demonstrates the limitations of all disassemblers out there, including IDA's :) Talk: [VIDEO] Slides: [LINK] Paper: [LINK]

One of my favourite talks I watched was "Low Cost Non-Invasive Biomedical Imaging - An Open Electrical Impedance Tomography Project" [LINK] As it presented an interesting technique I'd never heard of before, along with an implementation. Also I thought the 'Breaking the x86 Instruction Set' talk was extremely clever - [VIDEO]

my favorite were: - How the reputation economy is creating data-driven conformity [LINK] - DEF CON 25 (2017) - Weaponizing Machine Learning [LINK] - BlackHat 2017: Breaking the x86 Instruction Set [VIDEO]

Breaking the x86 Instruction Set by Christopher Domas. [VIDEO] I found it easy to follow and pretty entertaining.

There was a really good Blackhat talk a year or two ago in a sort of similar vein: they developed an approach to iterate and find undocumented opcodes. [VIDEO] The software they developed is called Sandsifter.

"I thought you were saying that the use of microcode would complicate verification of the hardware." I do think that microcode opens up the possibility of subtle injections to follow code/hardware paths you might not easily predict. A really good talk on reverse engineering an ISA implementation: [VIDEO]

There was an interesting black hat talk about automatically finding undocumented instructions. [0] Interesting comment on twitter to the instruction of the original post[1] [0] [VIDEO] [1] [LINK]

How about undocumented instructions? Sandsifter[1] is an interesting project and the video from BlackHat[2] is a good watch. There's also a previous discussion of it on HN[3]. [1] [LINK] [2] [VIDEO] [3] [LINK]