#!/usr/bin/env python3 # This file is part of the Trezor project. # # Copyright (C) 2012-2022 SatoshiLabs and contributors # # This library is free software: you can redistribute it and/or modify # it under the terms of the GNU Lesser General Public License version 3 # as published by the Free Software Foundation. # # This library is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Lesser General Public License for more details. # # You should have received a copy of the License along with this library. # If not, see <https://www.gnu.org/licenses/lgpl-3.0.html>. import sys from trezorlib.debuglink import DebugLink from trezorlib.transport import enumerate_devices # usage examples # read entire bootloader: ./mem_read.py 8000000 8000 # read initial stack pointer: ./mem_read.py 8000000 4 # an entire bootloader can be later disassembled with: # arm-none-eabi-objdump -D -b binary -m arm -M force-thumb memory.dat # note that in order for this to work, your trezor device must # be running a firmware that was built with debug link enabled def find_debug() -> DebugLink: for device in enumerate_devices(): try: debug_transport = device.find_debug() debug = DebugLink(debug_transport, auto_interact=False) debug.open() return debug except Exception: continue else: print("No suitable Trezor device found") sys.exit(1) def main() -> None: debug = find_debug() arg1 = int(sys.argv[1], 16) arg2 = int(sys.argv[2], 16) step = 0x400 if arg2 >= 0x400 else arg2 f = open("memory.dat", "wb") for addr in range(arg1, arg1 + arg2, step): mem = debug.memory_read(addr, step) f.write(mem) f.close() if __name__ == "__main__": main()