extract.py

import binascii, re
start_hex = "89504E470D0A1A0A"
end_hex = "49454E44AE426082"
cursor = 0
filecount = 1
with open("res.bin", "rb") as file:
    resources = file.read()
    hexed = binascii.hexlify(resources).decode("ascii").upper()
    pngends = [a.start() for a in re.finditer(end_hex, hexed)]
    for end in pngends:
        filename = "img{0}.png".format(filecount)
        with open(filename, "wb") as img:
            img_data = start_hex + hexed[cursor:end+16]
            binary_string = binascii.unhexlify(img_data)
            img.write(binary_string)
        cursor = end + 16
        filecount += 1