# -*- coding: utf-8 -*- import re import zipfile from pathlib import Path APK = Path(__file__).resolve().parent.parent / "apks" / "maribank_sg_base.apk" with zipfile.ZipFile(str(APK)) as zf: data = b"".join(zf.read(n) for n in zf.namelist() if n.endswith(".dex")) for needle in [b"getDfp", b"DeviceFingerprintResp", b"deviceFingerprint", b"/dfp/", b"dfp/v1"]: print("\n===", needle.decode(), "===") for m in re.finditer(re.escape(needle) + rb"[\x00-\xff]{0,80}", data): chunk = data[m.start() : m.start() + 120] s = re.sub(rb"[^\x20-\x7e]+", b"|", chunk).decode("ascii", "ignore") print(s[:140]) break # classes with fingerprint in name fps = sorted(set(m.group().decode()[1:-1].replace("/", ".") for m in re.finditer(rb"Lcom/shopee/bke/[^;\x00]{0,120}[Ff]ingerprint[^;\x00]{0,40};", data))) print("\n=== fingerprint classes ===") for c in fps[:30]: print(c) # RegisterViewModel methods - search string RegisterViewModel in dex for m in re.finditer(rb"Lcom/shopee/bke/biz/user/viewmodel/RegisterViewModel[^;\x00]*;", data): print("\nRegisterViewModel:", m.group().decode())