LPC bus tap. I feel like I'm modding PS2s again...pic.twitter.com/cXqzRa6SAN
If it ain't broke, I'll fix it!
I'm porting Linux to Apple Silicon Macs at @AsahiLinux.
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LPC bus tap. I feel like I'm modding PS2s again...pic.twitter.com/cXqzRa6SAN
TIL LPC is mixed-endian. Intel, what were you smoking?
Looks like it works. I see a bunch of Super I/O accesses, then COM1, Some port 90h pokes but nobody's listening (POST codes?), PS/2 KBC, and more pokes to 90h and 99h.pic.twitter.com/MEA8cTpxV9
Why am I doing this? TPM sniffer/MitM PoC. Because people who think that transparent-mode (TPM-only) BitLocker is secure are funny.
IIRC, since they removed the elephant diffuser, Bitlocker encryption is now somewhat malleable. You might be able to identify files from read patterns and NOP out the password check?
Yeah, that's another possible attack.
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