Hello and welcome to the #nakeddiefriday again.
-
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
-
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
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.
-
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.
A detail view on the analog section; the features on the right seem to be four resistor arrays of the same value, and those on the left are multiple capacitors connected in parallel. I wonder why they decided to make multiple separate parts instead of making a large one of required geometry.
-
R relay@relay.infosec.exchange shared this topic
