Script for converting NTAG215 dumps (.bin) to Flipper NFC device files (.nfc)

amiibin2nfcdev.py

#!/usr/bin/env python

import sys
from os.path import splitext, basename

if len(sys.argv) < 2:
  sys.exit('Usage: %s dump.bin' % sys.argv[0])

ntag_file = sys.argv[1]
nfc_file = splitext(ntag_file)[0] + '.nfc'

print('Converting "%s" -> "%s" ... ' % (basename(ntag_file), basename(nfc_file)), end = '')

try:
  with open(ntag_file, 'rb') as file:
    ntag_data = file.read()

  if len(ntag_data) != 540:
    raise RuntimeError('Incorrect NTAG215 dump size (expect 540 bytes, got %d bytes)' % len(ntag_data))

  nfc_device_header = [
    '# Auto-generated by amiibin2nfcdev.py',
    'Filetype: Flipper NFC device',
    'Version: 2',
    'Device type: Mifare Ultralight',
    'UID: {uid}',
    'ATQA: 44 00',
    'SAK: 00',
    'Signature: {sig}',
    'Mifare version: 00 04 04 02 01 00 11 03',
    'Counter 0: 0',
    'Tearing 0: 00',
    'Counter 1: 0',
    'Tearing 1: 00',
    'Counter 2: 0',
    'Tearing 2: 00',
    'Pages total: 135'
  ]

  nfc_device_pages = []

  for i in range(0, len(ntag_data), 4):
    nfc_device_pages.append('Page %d: %02X %02X %02X %02X' % (i / 4, *ntag_data[i:i + 4]))

  nfc_device_uid = ' '.join(['%02X' % x for x in ntag_data[:7]])
  nfc_device_sig = ' '.join(['00'] * 32)

  nfc_device = '\n'.join(nfc_device_header + nfc_device_pages)
  nfc_device = nfc_device.format(uid=nfc_device_uid, sig=nfc_device_sig)

  with open(nfc_file, 'w') as file:
    file.write(nfc_device + '\n')

  print('OK!')
except Exception as e:
  print('ERROR!\n%s' % e)