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iCopy-X Teardown, Ongoing

Some ongoing notes trying to understand what the iCopy-X is made of, what's the current state and what could be done once the software gets fully open-sourced.

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I want to warmly thank @gator96100 for sharing his own finding that are being merged over time in this repo as well!

Official links

Links mentioned in the documentation and in social networks

TL;DR


2021-08 UPDATE

Source of Hardware blueprints, schematics, STM32 firmware, Proxmark3 modifications and new FGPA support have been recently released. Parts are now merged in the official Proxmark3/RRG repo.

See all details here.

We're still missing the Python application details to be able to develop on the iCopy-X interface.

Most teardown observations predate the source releases.


So far, major observations are the following.

iCopy-X is based on Proxmark3 and a NanoPi NEO embedded Linux to run the client side. It contains an additional Python wrapper to provide a user interface with LCD and buttons.

  • Proxmark3 has an external flash like RDV4 but no smartcard reader
  • Proxmark3 FPGA is a larger model XC3S100E than the usual XC2S30
  • Proxmark3 runs a modified version of RRG/Iceman repo circa September 2020 (forked from 29c8b3aa4ee8cb3d66a1542d95740d996abe201f)
    • ARM firmware got modified at least to deal with the new FPGA image and to remove version information
    • FPGA image got modified to merge lf, hf and felica images
    • fpga_compress got modified to allow larger image (#define FPGA_CONFIG_SIZE 72864L)
    • client for NanoPi got modified at least to return error codes, to deactivate history and logs and to remove version information
    • client for Windows got modified at least to return error codes and to remove version information
    • UPDATE: full diff here

Open Questions

  • How firmwares are tied to serial numbers? cf version.so
  • Is the antenna LED drivable?
  • LED screen drivable by both STM32 and NanoPi?
  • Non-PC Mode: is there any usage of /dev/ttyACM0 when untied to ?

Desired changes

  • Open most of the Python application such that it could be properly maintained up to date with the RRG/Iceman and its GUI maintained properly as well
  • Bind the UART-to-USB bridge to the Linux Debug console when in non-PC-Mode, it's much more convenient than using the inner UART1

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