DEF CON 26 - Christopher Domas - GOD MODE UNLOCKED Hardware Backdoors in redacted x86

These links don't work for me, but the videos are on YT: - [VIDEO] - [LINK] And yes, they are spectacular.

I cannot wait for the accompanying Black Hat talk. Christopher Domas is one of my absolute favorite all-time hackers. He does such a fantastic job of explaining his work. Some of my favorite talks of his: - Psychological Warfare in Reverse Engineering [LINK] - The MoVfuscator [LINK] - Hardware Backdoors in redacted x86 [VIDEO]

This guy now works for intel: DEF CON 26 - Christopher Domas - GOD MODE UNLOCKED Hardware Backdoors in redacted x86 [VIDEO] This is one of many amazing videos this guy did before they hired him.

Holy shit, Christopher Domas is back. I remember watching his Defcon talks on x86 shenanigans[^1][^2] and being amazed at what he's been able to discover. Then he got whisked away by Intel and now drops this. I'm excited. [^1]: [LINK] [^2]: [VIDEO]

While somewhat interesting, I'm not sure there's much to discuss unless the presentation or details are already available. Interestingly, this reminds me of two Defcon talks I watched in the last day or two, which also cover vulnerability through additional processors onboard.[1][2] 1: [VIDEO] 2: [LINK]

You are taking these ideas into crazy places! Fun to think about. Given this context, I have a few thoughts: Contemporary processors may be interesting when simplified some. Your projects make me think about the Zachtronics games. [LINK] That is an assembly language game with surprising depth. People, who play it seriously will learn quite a lot. Using older hardware in tandem with current is a lot of fun. The terminal, for example, still does exactly what it was designed to do and is still useful today. A C64 has a user port for this kind of thing. Apple 2 computers saw all manner of expansion cards capable of data capture, control, computation... making ones own card with a PIA was a standard type project, just as connecting a circuit to the user port was. BASIC was often enough for many basic controls, say regulating temperature, or turning things off and on based on time, or other data states, assembly language brought more of the speed possible, and with more speed, we get more posibilities. Take one bit wired to a speaker. That is what the Apple and IBM PC shipped with to make sound. The PC had a spiffy timer to bang out notes, and the Apple had nothing but a toggle. Speaker on, or off. Here is where the fun part was back in the day: At first, it seems useless. Access an address and the speaker pops out. Do it again, and the speaker pops in. One can type this right into the computer with a BASIC POKE statement, or the monitor by address and watch the speaker change stat

Related: a defcon talk about it (DEF CON 26 - Christopher Domas - GOD MODE UNLOCKED Hardware Backdoors in redacted x86) [VIDEO] Website collecting info on thin clients, which many are VIA, if anyone gets interested in exploring it from a recycled unit: [LINK] EDIT: also [LINK] - Christopher Domas: Hardware Backdoors in X86 CPUs

haha maybe Christopher Domas knows :D [VIDEO] [x86 god mode] but there is a difference between knowing vaguely how internal combustion engine works versus treating your car as a magic box from the future. (which of course now most cars are, you can not even disable the tire pressure alert after you pump your tires without going to the service shop) I fear that nobody will even teach the fetch-execute cycle to our kids.