get_personal_photo.py

import sys
import re
import chardet

if len(sys.argv) < 2:
    sys.exit(f"Usage: {sys.argv[0]} [file]")

with open(sys.argv[1], "rb") as f:
    input_str = f.read()
    encoding = chardet.detect(input_str)
    matches = re.findall(
        r"1 OBJE\n2 FORM jpg\n2 FILE (.*?)\n(?:2 _.*\n)+2 _PERSONALPHOTO Y",
        input_str.decode(encoding["encoding"]),
    )

    print("\n".join(matches))