GOD MODE UNLOCKED: hardware backdoors in some x86 CPUs
github.com/xoreaxeaxeax/r…
White paper coming tomorrow. @BlackHatEvents
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domas
38 posts
domas
@xoreaxeaxeax
// hacker math & stuff // M/o/Vfuscator // sandsifter // project:rosenbridge // ..cantor.dust.. // REpsych // the memory sinkhole // nightshyft //
Katılım Nisan 2015
71 Takip Edilen8.5K Takipçiler
So is branchless computation hardened against #spectre and #meltdown? Here's a secure, branchless DOOM ...
7 hours in, 1 frame rendered. github.com/xoreaxeaxeax/m…
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domas retweetledi
VIDEO: “Breaking the x86 Instruction Set” by @xoreaxeaxeax #BHUSA 2017 Briefing presentation ow.ly/JLFR30eNDdt
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@c7zero @ABazhaniuk @JohnLoucaides @mikhailgorobets Thanks for the feedback. I was wondering about this, but wasn't sure if such hypercalls existed. Catching up on some of your papers now...
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@aurelsec @herbertbos @RolfRolles @thorstenholz Agreed, I rushed the paper for BH; will need to update w/ prior research (in fairness, I foolishly didn't check prior research before today)
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new project: sandsifter x86 processor fuzzer; exposes hidden instructions in x86; github.com/xoreaxeaxeax/s…
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copy/paste/search/replace are turing-complete so, brainf@!# interpreter, in vanilla vim. github.com/xoreaxeaxeax/v…
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Hmm. All programs reduce to the same instruction stream. Left, AES; right, Minesweeper. github.com/xoreaxeaxeax/r…
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and the randomfuscator just randomly throws crap together: github.com/xoreaxeaxeax/m… (HT
@angealbertini @f4grx)
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XADD-, SBB-, ADC-, and PUSH/POP- fuscators... github.com/xoreaxeaxeax/m…
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@angealbertini Need to start by setting a register to 0. Easy with xor or sub, a bit more convoluted with add.
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