# -*- coding: utf-8 -*- import re import zipfile from pathlib import Path APK = Path(__file__).resolve().parent.parent / "apks" / "maribank_sg_base.apk" needle = b"The dfp is empty in register scene" with zipfile.ZipFile(str(APK)) as zf: data = b"".join(zf.read(n) for n in zf.namelist() if n.endswith(".dex")) idx = data.find(needle) ctx = data[max(0, idx - 2000) : idx + 2000] classes = sorted(set(m.group().decode()[1:-1].replace("/", ".") for m in re.finditer(rb"Lcom/[^;\x00]{5,200};", ctx))) print("classes near register dfp empty:") for c in classes: print(c) print("\nstrings:") for m in re.finditer(rb"[\x20-\x7e]{6,100}", ctx): s = m.group().decode() if any(k in s.lower() for k in ("dfp", "register", "fingerprint", "empty", "scene", "monitor", "iv_")): print(s)