虎牙App密码登录: 逆向WUP协议并实现纯Python登录编码器
- hook WUP序列化层抓取TLS加密前明文，确认密码登录走 servant=huyaudbwebui / func=hypasswordLogin (msgType=0x1001) - 逆向JCE RequestPacket帧格式(1015字节TAF二进制)，定稿三层结构: WUP header(tag1-10) -> sBuffer Map -> _wup_data业务struct - 澄清两个疑点字节: 0x66/0x7d 是TAF字段头(非分隔符) - 实现 tools/huya_wup_encoder.py，逐字节复现金标准 - 实测纯Python动态构造登录成功(返回uid+token)，TLS指纹不阻断 - userAction随机坐标/时间戳同样通过，内置make_user_action辅助函数 - 新增证据金标准 + 协议文档
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"""虎牙 App 密码登录 WUP(TAF) 请求帧编码器。
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逆向自真实抓包金标准 `evidence/wup_passwordlogin_taf.bin`（1015 字节，
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POST https://udblgn.huya.com/open/hy/passwordLogin 的 base64 解码后 body）。
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帧结构（偏移从 0 开始，含 4 字节长度前缀）:
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[0:4] 长度 = 1015 (big-endian uint32)
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WUP header（TAF 字段，tag 1..10）:
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tag1 iVersion = 3 (INT8)
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tag2 cPacketType = 0 (ZERO)
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tag3 iMessageType = 0 (ZERO)
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tag4 iRequestId = session (INT32)
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tag5 sServantName = "huyaudbwebui" (STRING1)
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tag6 sFuncName = "hypasswordLogin" (STRING1)
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tag7 sBuffer = bytes (SIMPLE_LIST, 961 字节)
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tag8 iTimeout = 0 (ZERO)
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tag9 context = {} (空 MAP)
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tag10 status = {} (空 MAP)
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sBuffer = Map<str, bytes> 共 2 项:
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"_wup_data" -> 915 字节 TAF struct（业务数据，见下）
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"wupudbrequest_v0" -> 5 字节 = INT32(session) ← 裸 INT32 字段，非 struct
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_wup_data struct（915 字节，STRUCT_BEGIN 包裹，字段 t0..t8）:
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t0 (struct, 请求"头"):
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t0 = 0 (ZERO)
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t1 = "1.0"
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t2 = 元数据 JSON (compact, 固定键序)
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t3 = bizAppid "5008"
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t4 = 3 (INT8)
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t5 = safedeviceid
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t6 = ""
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t7 = ""
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t8 = user_action_json
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t9 = ""
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t1 (struct, 设备信息):
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t0 = hdid
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t1 = app_version "13.4.22"
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t2 = sdk_version "1.0.80138"
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t3 = ""
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t4 = ip "127.0.0.1"
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t5 = vendor "xiaomi"
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t6 = ""
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t2 (struct, 屏幕/设备特征，注意 t5 缺失):
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t0 = 1 (INT8)
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t1 = model "M2102J2SC"
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t2 = fingerprint "02df3987..."
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t3 = os "android"
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t4 = screen "M2102J2SC,30,11"
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t6 = width "1080"
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t7 = height "2120"
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t8 = device_id "7c5387e0..."
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t3 = name "hy_<uid_str>"
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t4 = sha1_password
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t5 = LIST[1] = ["5008"]
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t6 = 1 (INT8)
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t7 = {} (空 MAP)
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t8 = 空 SIMPLE_LIST (bytes)
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两个疑点字节的最终结论:
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- 偏移 27 的 0x66 ('f'): 并非字面 'f'，而是 TAF head 字节 (tag6<<4 | STRING1=6)
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= sFuncName 字段的 STRING1 头。ASCII 'f' 纯属巧合。
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- 偏移 44 的 0x7d ('}'): 并非字面 '}'，而是 TAF head 字节 (tag7<<4 | SIMPLE_LIST=13)
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= sBuffer 字段的 SIMPLE_LIST(byte[]) 头。
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偏移 45..51 的 7 字节 = SIMPLE_LIST 元素类型头(00) + 长度(01 03 c1 = 961)
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+ sBuffer 内层 Map 头(08) + Map 长度(00 02 = 2)。
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"""
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from __future__ import annotations
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import json
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import random
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import struct
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import time as _time
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from typing import Any, Dict
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# ---------------------------------------------------------------------------
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# TAF 类型标签
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# ---------------------------------------------------------------------------
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INT8, INT16, INT32, INT64 = 0x00, 0x01, 0x02, 0x03
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STRING1, STRING4 = 0x06, 0x07
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MAP, LIST = 0x08, 0x09
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STRUCT_BEGIN, STRUCT_END = 0x0A, 0x0B
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ZERO, SIMPLE_LIST = 0x0C, 0x0D
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class _Writer:
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"""极简 TAF 输出流（仅够构造本请求帧）。"""
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def __init__(self) -> None:
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self.buf = bytearray()
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def get(self) -> bytes:
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return bytes(self.buf)
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def head(self, tag: int, dtype: int) -> None:
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if tag < 15:
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self.buf.append((tag << 4) | dtype)
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else:
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self.buf.append(0xF0 | dtype)
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self.buf.append(tag)
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def int8(self, tag: int, v: int) -> None:
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if v == 0:
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self.head(tag, ZERO)
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else:
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self.head(tag, INT8)
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self.buf += struct.pack('b', v)
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def int16(self, tag: int, v: int) -> None:
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if -128 <= v <= 127:
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self.int8(tag, v)
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else:
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self.head(tag, INT16)
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self.buf += struct.pack('>h', v)
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def int32(self, tag: int, v: int) -> None:
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if -32768 <= v <= 32767:
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self.int16(tag, v)
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else:
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self.head(tag, INT32)
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self.buf += struct.pack('>i', v)
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def int64(self, tag: int, v: int) -> None:
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if -2147483648 <= v <= 2147483647:
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self.int32(tag, v)
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else:
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self.head(tag, INT64)
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self.buf += struct.pack('>q', v)
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def string(self, tag: int, s: str) -> None:
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b = s.encode('utf-8')
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if len(b) > 255:
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self.head(tag, STRING4)
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self.buf += struct.pack('>I', len(b))
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else:
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self.head(tag, STRING1)
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self.buf += struct.pack('B', len(b))
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self.buf += b
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def bytes(self, tag: int, b: bytes) -> None:
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"""SIMPLE_LIST (byte[])。"""
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self.head(tag, SIMPLE_LIST)
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self.head(0, INT8) # 元素类型固定 INT8
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self.int32(0, len(b)) # 长度（int32 优化编码）
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self.buf += b
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def struct_begin(self, tag: int) -> None:
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self.head(tag, STRUCT_BEGIN)
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def struct_end(self) -> None:
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self.head(0, STRUCT_END)
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def list_begin(self, tag: int, n: int) -> None:
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self.head(tag, LIST)
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self.int32(0, n)
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def map_begin(self, tag: int, n: int) -> None:
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self.head(tag, MAP)
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self.int32(0, n)
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def _build_meta_json(session: int, trace_id: str) -> str:
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"""构造 _wup_data.t0.t2 元数据 JSON（固定键序，compact）。"""
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meta: Dict[str, Any] = {
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"associationId": 8193,
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"funcName": "hypasswordLogin",
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"group": 1,
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"id": 4097,
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"session": session,
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"step": 1,
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"stillLogin": False,
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"traceId": trace_id,
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"type": 3,
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"uid": 0,
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"userContext": "",
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}
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return json.dumps(meta, ensure_ascii=False, separators=(',', ':'))
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def _make_name(uid_str: str) -> str:
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"""登录名 = "hy_" + 虎牙号（若已带前缀则原样返回）。"""
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if uid_str.startswith("hy_"):
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return uid_str
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return "hy_" + uid_str
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def make_user_action(now_ms: int | None = None) -> str:
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"""生成一条随机的 userAction 风控行为 JSON。
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实测（2025-08 抓包 + 重放）: 服务端对该字段不做严格校验，
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随机坐标/时间戳与旧轨迹一样能通过登录（返回 uid+token）。
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参数:
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now_ms: 基准毫秒时间戳；缺省取当前时间。
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"""
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if now_ms is None:
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now_ms = int(_time.time() * 1000)
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t1 = now_ms
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t2 = now_ms + random.randint(200, 900) # 两次点击间隔 200~900ms
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return json.dumps(
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{
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"curl": "登录页",
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"furl": "我的",
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"latitude": "-1.0",
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"longitude": "-1.0",
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"ssid": "",
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"user_action": [
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{"id": "24", "time": str(t1),
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"x": str(random.randint(150, 900)),
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"y": str(random.randint(800, 1600))},
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{"id": "11", "time": str(t2),
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"x": str(random.randint(150, 900)),
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"y": str(random.randint(800, 1600))},
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],
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},
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ensure_ascii=False,
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separators=(",", ":"),
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)
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def make_trace_id(pid: int = 0) -> str:
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"""生成 traceId，格式 `<hex16>-<pid>-<毫秒时间戳>`（与服务端生成规则一致）。"""
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return f"{random.getrandbits(64):016x}-{pid}-{int(_time.time() * 1000)}"
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def _build_wup_data(w: _Writer, uid_str: str, sha1_password: str,
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safedeviceid: str, hdid: str, session: int,
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trace_id: str, user_action_json: str,
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device_info: Dict[str, str]) -> None:
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"""编码 915 字节的 _wup_data struct。"""
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meta_json = _build_meta_json(session, trace_id)
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name = _make_name(uid_str)
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# ---- _wup_data struct（即"外层" struct）----
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w.struct_begin(0) # _wup_data struct (0x0a)
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# -- t0: 请求"头" struct --
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w.struct_begin(0) # t0 (0x0a)
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w.int8(0, 0) # t0.t0 = 0 -> ZERO (0x0c)
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w.string(1, "1.0") # t0.t1 = "1.0"
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w.string(2, meta_json) # t0.t2 = 元数据 JSON
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w.string(3, "5008") # t0.t3 = bizAppid
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w.int8(4, 3) # t0.t4 = 3 -> INT8
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w.string(5, safedeviceid) # t0.t5
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w.string(6, "") # t0.t6
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w.string(7, "") # t0.t7
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w.string(8, user_action_json) # t0.t8
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w.string(9, "") # t0.t9
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w.struct_end() # 0x0b
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# -- t1: 设备信息 struct --
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di = device_info
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w.struct_begin(1) # t1 (0x1a)
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w.string(0, hdid) # t1.t0 = hdid
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w.string(1, di["app_version"]) # t1.t1 = "13.4.22"
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w.string(2, di["sdk_version"]) # t1.t2 = "1.0.80138"
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w.string(3, "") # t1.t3
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w.string(4, di["ip"]) # t1.t4 = "127.0.0.1"
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w.string(5, di["vendor"]) # t1.t5 = "xiaomi"
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w.string(6, "") # t1.t6
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w.struct_end() # 0x0b
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# -- t2: 屏幕/设备特征 struct（注意 t5 缺省）--
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w.struct_begin(2) # t2 (0x2a)
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w.int8(0, 1) # t2.t0 = 1 -> INT8
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w.string(1, di["model"]) # t2.t1 = "M2102J2SC"
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w.string(2, di["fingerprint"]) # t2.t2 = 40 位指纹
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w.string(3, di["os"]) # t2.t3 = "android"
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w.string(4, di["screen"]) # t2.t4 = "M2102J2SC,30,11"
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# (t5 缺省)
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w.string(6, di["width"]) # t2.t6 = "1080"
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w.string(7, di["height"]) # t2.t7 = "2120"
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w.string(8, di["device_id"]) # t2.t8 = 40 位设备ID
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w.struct_end() # 0x0b
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# -- 登录字段 --
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w.string(3, name) # t3 = "hy_300023887"
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w.string(4, sha1_password) # t4 = SHA1 hex
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w.list_begin(5, 1) # t5 = LIST[1]
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w.string(0, "5008") # item = "5008"
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w.int8(6, 1) # t6 = 1 -> INT8
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w.map_begin(7, 0) # t7 = 空 MAP
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w.bytes(8, b"") # t8 = 空 bytes (8d 00 0c)
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w.struct_end() # 0x0b (_wup_data struct 结束)
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def build_password_login_wup(
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uid_str: str,
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sha1_password: str,
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safedeviceid: str,
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hdid: str,
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session: int,
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trace_id: str,
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user_action_json: str,
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device_info: Dict[str, str],
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) -> bytes:
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"""构造密码登录的 WUP TAF 请求体（1015 字节那种，未 base64）。
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参数:
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uid_str : 虎牙号（如 "300023887"），登录名 = "hy_" + uid_str。
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若已带 "hy_" 前缀则原样使用。
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sha1_password : SHA1(明文密码) 的 40 位 hex 字符串。
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safedeviceid : 设备安全 ID（长 base64 串）。
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hdid : 硬件设备 ID（32 位 hex）。
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session : 会话/请求 id（同时写入 iRequestId、元数据 session、
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"wupudbrequest_v0" 值）。
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trace_id : 元数据 traceId。
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user_action_json : 用户行为 JSON 字符串（curl/furl/user_action 等）。
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device_info : dict，需包含键:
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app_version, sdk_version, vendor, model, os,
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fingerprint, screen, width, height, device_id, ip。
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返回:
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1015 字节 TAF 二进制（HTTP body 为 base64 编码后发送）。
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"""
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# 1. _wup_data struct
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wd = _Writer()
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_build_wup_data(wd, uid_str, sha1_password, safedeviceid, hdid,
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session, trace_id, user_action_json, device_info)
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wup_data = wd.get()
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# 2. "wupudbrequest_v0" 值 = 裸 INT32(session)（非 struct）
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req = _Writer()
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req.int32(0, session)
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wupdbreq_v0 = req.get()
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# 3. sBuffer = Map<str, bytes>，2 项
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sb = _Writer()
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sb.map_begin(0, 2)
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sb.string(0, "_wup_data")
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sb.bytes(1, wup_data)
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sb.string(0, "wupudbrequest_v0")
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sb.bytes(1, wupdbreq_v0)
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s_buffer = sb.get()
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# 4. WUP header
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w = _Writer()
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w.int16(1, 3) # iVersion = 3 -> INT8
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w.int8(2, 0) # cPacketType = 0 -> ZERO
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w.int8(3, 0) # iMessageType = 0 -> ZERO
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w.int32(4, session) # iRequestId -> INT32
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w.string(5, "huyaudbwebui") # sServantName
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w.string(6, "hypasswordLogin") # sFuncName
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w.bytes(7, s_buffer) # sBuffer
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w.int32(8, 0) # iTimeout = 0 -> ZERO
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w.map_begin(9, 0) # context = 空 MAP
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w.map_begin(10, 0) # status = 空 MAP
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wup_body = w.get()
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# 5. 长度前缀
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return struct.pack('>I', 4 + len(wup_body)) + wup_body
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# ---------------------------------------------------------------------------
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# 自检
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# ---------------------------------------------------------------------------
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if __name__ == "__main__":
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import os
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here = os.path.dirname(os.path.abspath(__file__))
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golden_path = os.path.join(here, "..", "evidence", "wup_passwordlogin_taf.bin")
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golden = open(golden_path, "rb").read()
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device_info = {
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"app_version": "13.4.22",
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"sdk_version": "1.0.80138",
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"vendor": "xiaomi",
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"model": "M2102J2SC",
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"os": "android",
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"ip": "127.0.0.1",
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"fingerprint": "02df398797432eadefcc12767119ad5e80999389",
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"screen": "M2102J2SC,30,11",
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"width": "1080",
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"height": "2120",
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"device_id": "7c5387e0539c023c31c4ff0e807e7256117385ee",
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}
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out = build_password_login_wup(
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uid_str="300023887",
|
||||
sha1_password="772ed992b0e161276f44ec63671e60155c506294",
|
||||
safedeviceid=("PQwemAN9NHkZKoMqVTFUZBIypqMTaQEOrmXr37xQVhQZqrL/gUKEQ11xvE0ju48V8O/"
|
||||
"t9UBGSp27m4+6bP4IiAEnpaR5Rj1kHEfN2SPLPqYZW9vroxUSoAvjJn6ezTP9jWGxxlRDCbt"
|
||||
"Py4Rd6MencYT/pNImVIWK+YbNKZt1O05bHUFhqHf3"),
|
||||
hdid="ed0db8334cadd236c00cadf7e11ab5a5",
|
||||
session=3251699,
|
||||
trace_id="0b8f098ff64a5bdc-23473-94783833787595172451",
|
||||
user_action_json=('{"curl":"登录页","furl":"我的","latitude":"-1.0","longitude":"-1.0",'
|
||||
'"ssid":"","user_action":[{"id":"24","time":"1787595171950","x":"277","y":"1057"},'
|
||||
'{"id":"11","time":"1787595172444","x":"296","y":"952"}]}'),
|
||||
device_info=device_info,
|
||||
)
|
||||
|
||||
assert out == golden, "编码结果与金标准不一致！"
|
||||
print("编码器验证通过")
|
||||
print(f" 输出长度 = {len(out)} 字节，与金标准逐字节一致")
|
||||
Reference in New Issue
Block a user