[VectorLock]

I don't think his proof of concept is trying to recreate the entire implant as it is seen in the wild. His POC is trying to answer "A) can i put something in the middle of this one wire on the SPI bus and twiddle it enough to exploit the BMC" which his demo seems to prove.

Did he prove that B) he can do it in the footprint of a surface mount resistor? No. His information on how small uCs can be is supposed to support that.

Did he prove that C) the implant can do it _with only one wire_ going to it with no power and ground? No. He makes references to RFID CPUs to show that it should be possible to power it parasitically.

Does not doing B or C invalidate A and make the whole A, B, C implant impossible? I don't think so.

I would really like to see a POC for C though. That would be super interesting to me. That would be the next logical step for this or another researcher.