img_analyze.py

import argparse

def get_int(number):
    if number.startswith('0x'):
        return int(number, 16)
    else:
        return int(number, 10)

def main():
    parser = argparse.ArgumentParser(
        prog="b01lers image analyze tool",
        description="tool to analyze images dumped from flash",
    )

    parser.add_argument(
        "-i", "--image", required=True, help="Image to analyze"
    )

    parser.add_argument(
        "-a", "--addr", required=True, help="Address to dump"
    )

    parser.add_argument(
        "-l", "--len", required=True, help="Length to dump"
    )

    args = parser.parse_args()

    addr = get_int(args.addr)
    index = addr - 0x1000e000
    len = get_int(args.len)

    with open(args.image, 'rb') as f:
        data = f.read()
        # print(hex(data.index(b'expand 16') + 0x1000e000))
        # print(hex(data.index(b'\x13\x23') + 0x1000e000))
        print(hex(data.index(b'\x3c\x0b\x00\x20') + 0x1000e000))
        print(data[index:index + len])

if __name__ == '__main__':
    main()