Silicon Pr0n

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{{tag>collection_mcmaster vendor_nxp type_unknown year_unknown foundry_unknown}}

TLDR: Fudan FM11RF08S

Bambu filament

NFC taginfo:

<code>
MiFARE Classic (MF1S50)
ID: CD:45:2F:C0
ATQA: 0x0400
SAK: 0x08
</code>

<code>
FYI these might be Fudan clones of the Mifare Classic instead of NXP.
Philippe Teuwen recently uncovered that there was a backdoor in these Fudan chips, a backdoor that at some point also existed in the NXP chip. 

https://eprint.iacr.org/2024/1275
https://github.com/Bambu-Research-Group/RFID-Tag-Guide?tab=readme-ov-file#proxmark3-fm11rf08s-recovery-script
</code>

<code>
Bambu filament uses fudan. 
FM11RF08S
Hence Doegox’s research came in a good time. 

But then the kdf was extracted.
</code>

====== Package ======

{{:mcmaster:nxp:nb1s22-v01:pack3.jpg?400|}}

{{:mcmaster:nxp:nb1s22-v01:pack1.jpg?400|}}

{{:mcmaster:nxp:nb1s22-v01:pack2.jpg?400|}}



====== Die ======

<code>
NB1S22
V01
</code>

{{:mcmaster:nxp:nb1s22-v01:die3.jpg?400|}}

{{:mcmaster:nxp:nb1s22-v01:mz_die2.jpg?300|}}