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trezor-firmware/tools/mem_read.py

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#!/usr/bin/env python
from __future__ import print_function
from trezorlib.debuglink import DebugLink
from trezorlib.client import TrezorClient, TrezorDebugClient
from trezorlib.transport_hid import HidTransport
import binascii
import sys
# 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
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def main():
# List all connected TREZORs on USB
devices = HidTransport.enumerate()
# Check whether we found any
if len(devices) == 0:
print('No TREZOR found')
return
# Use first connected device
transport = HidTransport(devices[0])
# Creates object for manipulating TREZOR
debug_transport = HidTransport(devices[0], **{'debug_link': True})
client = TrezorClient(transport)
debug = DebugLink(debug_transport)
arg1 = int(sys.argv[1], 16)
arg2 = int(sys.argv[2], 16)
step = 0x400 if arg2 >= 0x400 else arg2
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f = open('memory.dat', 'w')
for addr in range(arg1, arg1 + arg2, step):
mem = debug.memory_read(addr, step)
f.write(mem)
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f.close()
client.close()
if __name__ == '__main__':
main()