Post #920699
2026-03-20 13:37 UTC
Hello and welcome to the #nakeddiefriday again. This one will be a continuation of the previous one with the same exhibit but in more depth. :-)
To remind you, this is the unnamed smartcard IC, which I believe was fabbed by Samsung.
Let's try removing some metal from the top. 🧵
#electronics #reverseengineering #smartcard
Replies (1)
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@infosecdj@infosec.exchange 2026-03-20 13:40
Interestingly, the thick infill area was way more resistant to the lapping process and the majority of metal-3 remained there, while the rest got stripped off. There is a lot of analog circuitry on the bottom and right sides of the chip. I am not sure why there is so much and what it does exactly.