feat: MariBank 风控 bypass、澳洲银行 Hook 与 reverse 逆向工作区
新增 MariBank/SeaBank PH Root 与 SHPSSDK bypass、riskToken 净化及 Up/Suncorp/ubank 消息 Hook;整理 reverse/ 脚本与 Frida 工具链,并补充当日工作说明文档。
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reverse/scripts/dump_crypto_jni.py
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reverse/scripts/dump_crypto_jni.py
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# -*- coding: utf-8 -*-
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"""Dump JNI/native methods for sdkutils crypto + register-related classes."""
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import re
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import subprocess
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import zipfile
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from pathlib import Path
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from typing import List
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APK = Path(__file__).resolve().parent.parent / "apks" / "seabank_ph_base.apk"
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DEXDUMP = Path(r"C:\Users\Administrator\AppData\Local\Android\Sdk\build-tools\37.0.0\dexdump.exe")
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OUT = Path(__file__).resolve().parent.parent / "output" / "crypto_jni_targets.txt"
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CLASS_PATTERNS = [
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rb"Lcom/shopee/bke/lib/jni/[^;]{1,80};",
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rb"Lcom/shopee/shpssdkbank/wvvvuwwu;",
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rb"Lcom/shopee/shpssdkbank/uwuvuvvww/vvuuuuvvv;",
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rb"Lcom/shopee/shpssdkbank/uwuvuvvww/[^;]{1,40};",
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]
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EXTRA_KEYWORDS = (
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b"NativeEncrypt",
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b"CharacterCrypto",
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b"SecurityMain",
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b"encrypt",
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b"decrypt",
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b"register",
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)
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def dump_class(out: str, target: str) -> List[str]:
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lines: list[str] = []
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cap = False
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for line in out.splitlines():
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if f"Class descriptor : '{target}'" in line:
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cap = True
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elif cap and line.startswith(" Class descriptor") and target not in line:
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break
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if cap:
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lines.append(line)
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return lines
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def main() -> None:
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with zipfile.ZipFile(str(APK)) as zf:
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data = b"".join(zf.read(n) for n in zf.namelist() if n.endswith(".dex"))
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classes: set[str] = set()
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for pat in CLASS_PATTERNS:
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for m in re.finditer(pat, data):
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classes.add(m.group().decode()[1:-1].replace("/", "."))
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for kw in EXTRA_KEYWORDS:
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for m in re.finditer(rb"Lcom/[^;]{0,120};", data):
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s = m.group()
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if kw in s or kw in data[data.find(s) : data.find(s) + 4000]:
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classes.add(s.decode()[1:-1].replace("/", "."))
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# log tags -> classes from crash log
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for tag in [
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"com.shopee.bke.lib.jni.utils.f", # SoUtils
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"com.shopee.bke.lib.jni.uwuwuwuw",
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"com.shopee.bke.lib.jni.uvuvuvuv",
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"com.shopee.bke.lib.jni.uvwwwwuv",
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]:
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classes.add(tag)
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native_entries: List[str] = []
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with zipfile.ZipFile(str(APK)) as zf:
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for dex_name in zf.namelist():
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if not dex_name.endswith(".dex"):
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continue
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dex = zf.read(dex_name)
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hits = [c for c in classes if c.replace(".", "/") in dex.decode("latin1", errors="ignore")]
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if not hits:
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continue
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tmp = Path(__file__).resolve().parent.parent / "tmp" / "tmp_crypto_jni.dex"
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tmp.write_bytes(dex)
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out = subprocess.check_output(
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[str(DEXDUMP), "-d", str(tmp)], universal_newlines=True, errors="replace"
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)
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for cls in sorted(hits):
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block = dump_class(out, "L" + cls.replace(".", "/") + ";")
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if not block:
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continue
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native_entries.append(f"\n=== {dex_name} {cls} ===")
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for line in block:
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if any(
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k in line
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for k in ("NATIVE", "name :", "type :", "loadLibrary")
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):
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native_entries.append(line)
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text = "\n".join(native_entries)
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OUT.write_text(text, encoding="utf-8")
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print(text)
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print(f"\nwritten {OUT}")
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if __name__ == "__main__":
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main()
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