Extract Firmware Pieces from Dump of Flash for Lenovo C2E Camera

unpacker.py

#!/usr/bin/env python
# coding=utf-8
import click

import os
CHECK_FOLDER = os.path.isdir("flash")
if not CHECK_FOLDER:
    os.makedirs("flash")

@click.command()
@click.argument('inputfile', default="demo_5.5.1.194.bin", type=click.Path(exists=True))
def cli(inputfile):


    dic = [
        ("uboot", 0x40000),
        ("kernel", 0x180000),
        ("rootfs", 0x280000),
        ("rom", 0x20000),
        ("config", 0x80000),
        ("appfs", 0x900000),
        ("appfs1", 0x220000),
    ]

    inputfile = click.format_filename(inputfile)
    fullflash = open(inputfile, 'rb')
    fullflash.seek(0)
    for name, size in dic:
        filename = "flash/" + name + ".bin"
        buffer = fullflash.read(size)
        f = open(filename, "wb")
        f.write(buffer)


if __name__ == '__main__':
    cli()