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#!/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()
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