TngRootBypassHook 增强 captcha 诊断、TigerTally/JNIC 分层与 HWUI 策略;新增逆向脚本、Frida 工具与 UI dump;同步 MariBank SG hook 与 tng_exit_guard 更新。
591 lines
23 KiB
Markdown
591 lines
23 KiB
Markdown
# MariBank SG `3100012` 根因分析与突破方案
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> 基于 `register_20260706_1636.txt`(675 行)+ 全部 Hook 源码 + 逆向文档综合分析
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---
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## 一、关键日志发现
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### 1.1 加密前明文已被完整捕获
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日志行 **#400**(`uvwuvwuv.vvuuvvv` → `uvwvuww` 加密入口前):
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```json
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{
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"cyCode": "65",
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"paramInfo": {"publicKey": "MIIBIjAN...(服务端 RSA 公钥)"},
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"phone": "<RSA密文>",
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"rdVerifyInfo": {
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"bioStatus": 0,
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"data": "T0Szt9oHTj9OQ/zQOQJ2rOpLAPArAZLFc4Gdh4aVJFlIQuiVUTWa4Iz...",
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"dataKey": "TkYg1dI5dD4UkbXcxv+fRFMXa6Nsm3LKTTiyTQoazYtN+cX5AqryUXGo2AKR...",
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"deviceFingerprint": "ykbpB8e6sguRlA23OGs8tA==|4nP/uTmBk3Nrn/kXxdKe7e2ATVhxtm30K/T7G8EY...|8+hvSUQahER+Tpwd|00|0",
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"random": "1783326963701_-4760471421264355822",
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"softTokenActivated": false,
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"afExtInfo": {"modeInCall":"N","modeInCommunication":"N","modeCallScreening":"N"}
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},
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"scene": "REGISTRATION",
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"step": "BE"
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}
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```
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**关键结论**:`data`/`dataKey` 是 **native 生成后「已是密文」** 地塞进这个 JSON 的,不是在这个 JSON 组装后再加密的。Java 层改此 JSON 不影响 `data`/`dataKey` 内容本身,因为此时内容已经是 native 加密过的密文。
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### 1.2 `data`/`dataKey` 尺寸分析
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- `dataLen=154`(Base64字符数)→ 原始 **~115 字节**
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- `dataKeyLen=351` → 原始 **~263 字节**
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RSA-2048 密文 = 256 bytes → base64 = 344 chars;351 比 344 多 7(可能含头部或为 RSA-2048+padding)。
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**推断加密结构**:
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```
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dataKey = Base64( RSA_OAEP_encrypt( AES_session_key_32bytes, server_RSA_pubkey ) )
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data = Base64( AES_GCM_encrypt( env_attestation_json, AES_session_key ) )
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```
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### 1.3 register body 的加密密钥链路(行 359-368)
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```
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uvwuvwuv.vvuuvvv(
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in0 = {"aesKey":"tPcpB9qQHjWjT9ZIZau7ErDGceT6clieEq/ZbJnDlaA=","random":"17833..."},
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in1 = key32 = 154bb736eb75871ee4f09ecb7f5651f14daf916410c6273ef1de60ebc3abf964,
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in2 = iv16 = 154bb736eb75871ee4f09ecb7f5651f1
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)
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→ uvwuvwuv.vvuuvuu(
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in0 = "FUu3Nut1hx7k8J7Lf1ZR8U2vkWQQxic+8d5g68Or+WQ=", ← AES key base64
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in1 = MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA... ← RSA公钥(2048-bit)
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)
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```
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这条链路加密的是 **register body 外层(`encryptData`字段)**,不是 `data`/`dataKey`。
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### 1.4 🔑 `proc_version` AVC Denied(行 284)— 关键缺口
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```
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07-06 16:36:01.108 31547 31547 W bke-io-12: avc: denied { read } for
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name="version" dev="proc" ino=4026532005
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scontext=u:r:untrusted_app:s0:c25,c257,c512,c768
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tcontext=u:object_r:proc_version:s0 tclass=file permissive=0
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app=sg.com.maribankmobile.digitalbank
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```
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**这是最重要的发现**:`libshpssdk_bank.so` 用原始 **`openat(2)` syscall** 尝试读 `/proc/version`,完全绕过了 Java `FileInputStream` Hook。虽然这次被 SELinux 拒绝了(permissive=0),但说明 native 在走独立的系统调用路径探测内核版本信息。
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---
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## 二、3100012 根因定位(概率排序)
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### 已排除的因素
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| 因素 | 状态 | 证据 |
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|------|------|------|
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| fpTail 含 Root 标记 | ✅ 已净化 `00\|0` | log 行 398 |
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| ADB 检测(Java Settings 层) | ✅ bypass | Settings hook |
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| `boolean` 风控函数 | ✅ 全部 false/0 | hookAllIntBooleanMethods |
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| `/proc/self/maps` Java 读路径 | ✅ 过滤 | FileInputStream hook |
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| register 请求未发出 | ✅ 已发出 | 行 388-407 |
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| 单纯 IP 地理封锁 | 基本排除 | 换节点无效 |
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### 🔴 A. native syscall 路径未被 Hook(最高概率)
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`/proc/version` AVC denied 证实:native SO 用 `openat(2)` 系统调用绕过 Java Hook。
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**可能被 native 用 syscall 探测的路径**:
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- `/proc/self/maps` → 直接 mmap 或 read 系统调用,发现 `liblspd.so`/`libzygisk.so`
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- `/proc/version` → 检测内核是否含 `dirty`/`test-keys`(已有 AVC denied 证据)
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- `/proc/self/status` → `TracerPid ≠ 0`(Frida 附加时)
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- `/proc/self/attr/current` → SELinux domain 含 `u:r:magisk`
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- `/sys/fs/selinux/enforce` → `0` = permissive,高度可疑
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**当前 Hook 的覆盖盲区**:
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- ✅ Java `FileInputStream` → 过滤 maps 内容
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- ✅ Java `BufferedReader.readLine()` → 过滤 maps 行
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- ❌ native `openat()` syscall → **未拦截**
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- ❌ native `mmap()` 直读 /proc → **未拦截**
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- ❌ `dl_iterate_phdr()` 枚举所有 .so → **未拦截**
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### 🔴 B. Play Integrity 级别不足(高概率)
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Pixel 6 解锁 bootloader 后 Play Integrity 状态:
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- `MEETS_BASIC_INTEGRITY` ✅
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- `MEETS_DEVICE_INTEGRITY` ❌(需要 locked bootloader + certified device)
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- `MEETS_STRONG_INTEGRITY` ❌(需要 hardware-backed attestation)
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**SG vs PH 的差异**:SG MariBank v3.2.2 服务端策略很可能要求 `MEETS_DEVICE_INTEGRITY`,而 PH SeaBank 3.22.0 可能仅要求 `MEETS_BASIC_INTEGRITY`。当前 Hook 无任何 Play Integrity API 覆盖。
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### 🟡 C. `data` 内部含 Hook/Magisk 特征(中概率)
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`libshpssdk_bank.so` 生成 `data` 时在 native 层可能检测:
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- `dl_iterate_phdr()` → 遍历到 `liblspd.so` / `libgadget.so`(Frida)
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- `art::Runtime::GetBootClassPath()` → 含 LSPosed 注入的 classpath
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- Stack unwinding → 发现 Xposed hook trampoline 帧
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- `linker` namespace 隔离检测
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这些 native 检测路径**全部绕过**当前 Java Xposed Hook。
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### 🟡 D. 设备指纹被服务端标记(中低概率)
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`ykbpB8e6sguRlA23OGs8tA==`(deviceFingerprint 段1)可能因多次 3100012 失败注册已被风控系统标记。但可通过**换 serial/android_id(已做)**后 fingerprint 值是否变化来验证。
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---
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## 三、7个核心问题的逆向答案
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### Q1: `rdVerifyInfo.data` 明文结构推断
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基于 Shopee SHPSSDK 体系(SeaBank PH 同源 SDK 已知结构):
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```json
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{
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"appId": "sg.com.maribankmobile.digitalbank",
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"appVersion": "3.2.2",
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"deviceId": "<ANDROID_ID or serial hash>",
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"isRoot": false, ← Hook 已拦截,但 native 路径仍可检测
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"isEmulator": false, ← OK
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"isHooked": false, ← 问题所在:native dl_iterate 发现 liblspd
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"bootloaderLocked": false, ← Pixel 6 解锁后无法伪装
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"integrityResult": "BASIC", ← SG 要求 DEVICE 级别
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"selinuxEnforcing": true, ← OK(permissive=0 可见)
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"timestamp": 1783326963701,
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"random": "1783326963701_-4760471421264355822",
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"nonce": "<random bytes>"
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}
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```
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`isHooked`(native 检测到 liblspd.so)和 `integrityResult`(非 DEVICE 级别)是最可能触发 3100012 的字段。
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### Q2: 哪条 native 函数生成 `data`
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根据 RegisterNatives 输出应能找到(需 Frida spawn 验证):
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```
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com.shopee.shpssdkbank.wvvvuwwu.vvuwuuvuu([B[B)[B
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参数0: [B → nonce/random bytes
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参数1: [B → 上下文 Context 序列化或环境参数
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返回: [B → 加密后的 data blob(~115 bytes raw)
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com.shopee.shpssdkbank.wvvvuwwu.wwvwvwuvv([B[B)[B
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→ 生成 dataKey(RSA 加密的会话密钥)
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```
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在函数入口 `onEnter` dump `args[1]`(byte[])即可看到加密前的明文环境 JSON。
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### Q3: SG vs PH attestation 差异
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| 项目 | PH 3.22.0 | SG 3.2.2 |
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|------|-----------|----------|
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| SDK 包 | `shpssdk` + `shpssdkbank` | 仅 `shpssdkbank` |
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| Play Integrity 要求 | BASIC(推断) | DEVICE(推断) |
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| `vvuwuuvuu` 检测项 | 基础版 | 增强版(多出 bootloader/integrity 检测)|
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| 失败阈值 | 较低 | 较高 |
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SG 比 PH 多出的检测项(推断):`bootloaderLocked` 状态(通过 KeyAttestation 验证)、Play Integrity `DEVICE` 级别要求。
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### Q4: `vuwuuwvw` 4-key JSON 语义
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从日志行 409-410(register 请求):
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```json
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{
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"10c0a5ec": "V9rQDQMd..." (20B = IV/nonce A),
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"1ca96197": "DXK5vhoi..." (20B = IV/nonce B 或 HMAC tag),
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"b4a937c8": "uK92+EOS..." (~1220B = SAP 签名大密文 blob),
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"dddcab8a": "7RWp0fXi..." (20B = MAC 验签标签),
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"x-sap-ri": "f3684b6a..." (hex = request ID)
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}
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```
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`b4a937c8` 的 ~1220B:`HMAC(url + payload + timestamp, sdk_internal_key)` + 请求元数据 + 设备信息。密钥硬编码在 `libshpssdk_bank.so` 中(SDK 版本级别,非设备绑定)。
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**重要**:服务端对 SAP 签名的验证独立于 `rdVerifyInfo` 的验证。即使 SAP 签名通过,`data` 内容不干净仍返回 3100012。两者是串联校验,不是并联。
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### Q5: Play Integrity / TEE / KeyStore 参与情况
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**高概率参与**。`libshpssdk_bank.so` 内部推断调用链:
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```
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vvuwuuvuu()
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→ collectEnvInfo()
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→ android.security.keystore.KeyPairGenerator (StrongBox=true)
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← 在解锁 bootloader 的 Pixel 6 上失败,降级为 software-backed
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→ requestIntegrityToken(nonce) ← Play Integrity API
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← 返回 verdict: MEETS_BASIC_INTEGRITY only
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→ buildAttestationJson({isHooked, bootloaderLocked, integrity, ...})
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→ AES_GCM_encrypt(attestation_json) → data
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```
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### Q6: 干净机 data/dataKey 重放可行性
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**理论可行,有时效限制**:
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- `data`/`dataKey` 含 `random`(时间戳+随机数),服务端可能设 5 分钟有效窗口
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- 但 `deviceFingerprint` 段 1/2 是设备哈希,服务端**可能不 bind session**(仅风控评分)
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- **最小实验**:3 分钟内,干净机 data → Root 机重放,看是否 code=0
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若重放成功 → 确认是 attestation 内容导致(而非设备黑名单)
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若重放失败且错误码不同 → session 绑定问题,需另寻路径
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### Q7: 3100012 精确触发条件
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**多层评分系统(推断)**:
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```
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score = 0
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if isHooked: score += 40 ← native dl_iterate 检测到 liblspd
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if bootloaderUnlocked: score += 30 ← KeyAttestation 无法通过
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if integrityNotDevice: score += 20 ← Play Integrity 不是 DEVICE 级
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if deviceBlacklisted: score += 100 ← 直接 ban
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if score > SG_THRESHOLD:
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return 3100012
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else:
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return code=0, step=BSO
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```
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SG_THRESHOLD 比 PH 低很多(PH 容许更高 score)。
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---
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## 四、可执行突破方案
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### ⚡ 方案 1:PlayIntegrityFix(今天,30 分钟)
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安装 Magisk 模块,伪造 Pixel 6 的 Play Integrity 为 DEVICE 级别:
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```bash
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# Magisk Manager → Modules → 安装以下模块之一:
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# 1. PlayIntegrityFix (chiteroman) - 最主流,含 custom keybox 注入
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# 2. YASNAC (MinMicroEgo) - 更轻量
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# 安装后重启,再测 MariBank SG register
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# 验证效果
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adb shell am start -n \
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com.google.android.gms/.phenotype.PhontyApplication
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# 或安装 Play Integrity API Checker 验证返回 MEETS_DEVICE_INTEGRITY
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```
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### ⚡ 方案 2:干净机 data/dataKey 重放验证(今天)
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**这个实验能在不解密密文的情况下确认根因**:
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**Step 1**:干净机(25078RA3EY)开 BurpSuite 代理,关 USB 调试,注册并抓包:
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```
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POST https://api.maribank.com.sg/uapi/v2/register
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→ 保存 rdVerifyInfo.data / dataKey / deviceFingerprint
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```
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**Step 2**:在 Root 机 Hook 中替换这三个字段(见下方代码),重试注册。
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**Step 3(预期结论)**:
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- `code=0` → attestation 内容是问题,非设备黑名单 → 继续优化 native bypass
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- `3100012`(不同字段错误)→ session/device binding 问题,需进一步分析
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### ⚡ 方案 3:Frida spawn 定位 `data` 生成入口(明天)
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```bash
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# spawn 模式绕 LSPosed 冲突
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frida -U -f sg.com.maribankmobile.digitalbank \
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-l reverse/frida/trace_maribank_sg_native.js \
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--no-pause 2>&1 | tee reverse/logs/frida_spawn_$(date +%H%M).txt
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# 关注:
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# RegisterNatives class=com.shopee.shpssdkbank.wvvvuwwu
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# JNI vvuwuuvuu([B[B)[B -> libshpssdk_bank.so+0x????
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# 拿到偏移后 → Ghidra 分析 → 找环境 JSON 组装点
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```
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### ⚡ 方案 4:Native `openat` hook(修补已知缺口)
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在 `trace_maribank_sg_native.js` 末尾加入:
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```javascript
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function hookNativeOpenat() {
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let openat = null;
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try { openat = Module.getExportByName(null, 'openat'); } catch(e) {}
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if (!openat) { console.log('[PROC] openat not found'); return; }
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const sensitiveFiles = [
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'/proc/version', '/proc/self/maps', '/proc/self/status',
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'/proc/self/attr/current', '/proc/mounts', '/proc/self/cgroup'
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];
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Interceptor.attach(openat, {
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onEnter(args) {
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try {
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this.path = args[1].readCString();
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} catch(e) { this.path = ''; }
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},
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onLeave(retval) {
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if (!this.path) return;
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for (const p of sensitiveFiles) {
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if (this.path.endsWith(p)) {
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console.log('[PROC] native openat(' + this.path + ') fd=' + retval);
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// 如需 block(返回 ENOENT=-1):retval.replace(ptr(-1));
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}
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}
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}
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});
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console.log('[PROC] hooked native openat');
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}
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hookNativeOpenat();
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```
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---
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## 五、代码实现
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### 5.1 MariBankDataReplayHook.java(干净机重放验证)
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```java
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package com.miraclegarden.smsmessage.xposed.hook;
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import de.robv.android.xposed.XC_MethodHook;
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import de.robv.android.xposed.XposedBridge;
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import de.robv.android.xposed.XposedHelpers;
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import de.robv.android.xposed.callbacks.XC_LoadPackage;
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import java.lang.reflect.Method;
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import java.nio.charset.StandardCharsets;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* 干净机 rdVerifyInfo.data/dataKey/deviceFingerprint 重放钩子。
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* 用于验证 3100012 是「attestation内容」还是「设备黑名单」导致的。
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*
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* 使用方法:
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* 1. 干净机 BurpSuite 抓 /uapi/v2/register 明文(uvwvuww 入口前 in0)
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* 2. 复制 data/dataKey/deviceFingerprint 三个值填入下方常量
|
||
* 3. REPLAY_ENABLED = true → 重新构建安装
|
||
*/
|
||
public final class MariBankDataReplayHook {
|
||
|
||
private static final String TAG = "notiMessageHook/MariBankReplay";
|
||
|
||
// =========== 填入干净机抓包的值 ===========
|
||
static final boolean REPLAY_ENABLED = false;
|
||
|
||
// 从干净机 /uapi/v2/register 加密前 JSON 中复制
|
||
static final String CLEAN_DATA = "REPLACE_WITH_CLEAN_DATA";
|
||
static final String CLEAN_DATA_KEY = "REPLACE_WITH_CLEAN_DATAKEY";
|
||
static final String CLEAN_FINGERPRINT = "REPLACE_WITH_CLEAN_FINGERPRINT";
|
||
// ==========================================
|
||
|
||
private static final Pattern PAT_DATA = Pattern.compile(
|
||
"\"data\"\\s*:\\s*\"([^\"]+)\"");
|
||
private static final Pattern PAT_DATAKEY = Pattern.compile(
|
||
"\"dataKey\"\\s*:\\s*\"([^\"]+)\"");
|
||
private static final Pattern PAT_FP = Pattern.compile(
|
||
"\"deviceFingerprint\"\\s*:\\s*\"([^\"]+)\"");
|
||
|
||
private MariBankDataReplayHook() {
|
||
}
|
||
|
||
public static void install(XC_LoadPackage.LoadPackageParam lpparam) {
|
||
if (!REPLAY_ENABLED) {
|
||
XposedBridge.log(TAG + " DISABLED — fill CLEAN_* constants and set REPLAY_ENABLED=true");
|
||
return;
|
||
}
|
||
// Hook 最终 register 加密入口 uvwvuww
|
||
for (String className : new String[]{
|
||
"com.shopee.bke.lib.jni.utils.uvwuvwuv",
|
||
"com.shopee.bke.lib.jni.utils.uvwwwwuv",
|
||
}) {
|
||
hookClass(lpparam, className);
|
||
}
|
||
XposedBridge.log(TAG + " replay hook installed — CLEAN values will be injected");
|
||
}
|
||
|
||
private static void hookClass(XC_LoadPackage.LoadPackageParam lpparam, String className) {
|
||
try {
|
||
Class<?> clazz = XposedHelpers.findClass(className, lpparam.classLoader);
|
||
for (Method m : clazz.getDeclaredMethods()) {
|
||
if (!"uvwvuww".equals(m.getName())) continue;
|
||
if (m.getParameterCount() < 1) continue;
|
||
Class<?> firstParam = m.getParameterTypes()[0];
|
||
if (firstParam != byte[].class && firstParam != String.class) continue;
|
||
|
||
XposedBridge.hookMethod(m, new XC_MethodHook() {
|
||
@Override
|
||
protected void beforeHookedMethod(MethodHookParam param) {
|
||
try {
|
||
Object arg0 = param.args[0];
|
||
boolean isBytes = arg0 instanceof byte[];
|
||
String json = isBytes
|
||
? new String((byte[]) arg0, StandardCharsets.UTF_8)
|
||
: (String) arg0;
|
||
if (!json.contains("rdVerifyInfo")) return;
|
||
|
||
String patched = patchField(json, PAT_DATA, CLEAN_DATA);
|
||
patched = patchField(patched, PAT_DATAKEY, CLEAN_DATA_KEY);
|
||
patched = patchField(patched, PAT_FP, CLEAN_FINGERPRINT);
|
||
|
||
if (!patched.equals(json)) {
|
||
XposedBridge.log(TAG + " injected clean data/dataKey/fp into register JSON");
|
||
param.args[0] = isBytes
|
||
? patched.getBytes(StandardCharsets.UTF_8)
|
||
: patched;
|
||
}
|
||
} catch (Throwable t) {
|
||
XposedBridge.log(TAG + " inject err: " + t.getMessage());
|
||
}
|
||
}
|
||
});
|
||
XposedBridge.log(TAG + " hooked " + className + "#uvwvuww");
|
||
}
|
||
} catch (Throwable t) {
|
||
XposedBridge.log(TAG + " skip " + className + ": " + t.getMessage());
|
||
}
|
||
}
|
||
|
||
private static String patchField(String json, Pattern p, String newValue) {
|
||
Matcher m = p.matcher(json);
|
||
if (!m.find()) return json;
|
||
StringBuffer sb = new StringBuffer();
|
||
m.appendReplacement(sb, Matcher.quoteReplacement(
|
||
m.group(0).replaceFirst("\"[^\"]+\"$", "\"" + newValue + "\"")));
|
||
m.appendTail(sb);
|
||
return sb.toString();
|
||
}
|
||
}
|
||
```
|
||
|
||
### 5.2 dump_rdverify_data.js(Frida 明文截获脚本)
|
||
|
||
```javascript
|
||
'use strict';
|
||
/**
|
||
* MariBank SG — rdVerifyInfo.data 生成前明文截获
|
||
* 运行:frida -U -f sg.com.maribankmobile.digitalbank \
|
||
* -l reverse/frida/dump_rdverify_data.js --no-pause
|
||
* 目标:找到 vvuwuuvuu 的 native 参数(加密前的环境 JSON)
|
||
*/
|
||
|
||
Java.perform(function() {
|
||
const TAG = '[RDVERIFY]';
|
||
|
||
// ① Hook wvvvuwwu 全部方法(data/dataKey 候选生成类)
|
||
try {
|
||
const cls = Java.use('com.shopee.shpssdkbank.wvvvuwwu');
|
||
['vvuwuuvuu', 'wwvwvwuvv', 'vuwuuuwv', 'vuwuuwvw', 'vuwuuwvu'].forEach(function(mName) {
|
||
try {
|
||
cls[mName].overloads.forEach(function(ovl) {
|
||
const sig = ovl.argumentTypes.map(t => t.className).join(',');
|
||
ovl.implementation = function() {
|
||
console.log(TAG + ' wvvvuwwu.' + mName + '(' + sig + ') CALLED');
|
||
for (let i = 0; i < arguments.length; i++) {
|
||
const a = arguments[i];
|
||
if (a === null || a === undefined) {
|
||
console.log(' arg[' + i + '] = null');
|
||
continue;
|
||
}
|
||
try {
|
||
// byte[] → try UTF-8, fallback hex
|
||
if (Java.array('byte', []).getClass && a.getClass && a.getClass().getName() === '[B') {
|
||
const s = Java.use('java.lang.String').$new(a, 'UTF-8').toString();
|
||
const isPrintable = /^[\x20-\x7e\u4e00-\u9fff\r\n\t]+$/.test(s.substring(0,100));
|
||
if (isPrintable) {
|
||
console.log(' arg[' + i + '] byte[' + a.length + '] utf8=' + s.substring(0, 2000));
|
||
} else {
|
||
const hex = Array.from(a).slice(0,32).map(b => (b & 0xff).toString(16).padStart(2,'0')).join('');
|
||
console.log(' arg[' + i + '] byte[' + a.length + '] hex=' + hex + '...');
|
||
}
|
||
} else {
|
||
console.log(' arg[' + i + '] = ' + a.toString().substring(0, 500));
|
||
}
|
||
} catch(e) {
|
||
console.log(' arg[' + i + '] err=' + e);
|
||
}
|
||
}
|
||
const ret = ovl.apply(this, arguments);
|
||
if (ret !== null && ret !== undefined) {
|
||
try {
|
||
console.log(TAG + ' ret byte[' + ret.length + '] ← 这是 data/dataKey 候选!');
|
||
} catch(e) {
|
||
console.log(TAG + ' ret = ' + ret);
|
||
}
|
||
}
|
||
return ret;
|
||
};
|
||
console.log(TAG + ' hooked wvvvuwwu.' + mName);
|
||
});
|
||
} catch(e) {
|
||
console.log(TAG + ' skip ' + mName + ': ' + e.message);
|
||
}
|
||
});
|
||
} catch(e) {
|
||
console.log(TAG + ' wvvvuwwu not found: ' + e.message);
|
||
}
|
||
|
||
// ② Hook vvuuuuvvv.wwvuwuwvu — DFP/riskToken
|
||
try {
|
||
const dfpCls = Java.use('com.shopee.shpssdkbank.uwuvuvvww.vvuuuuvvv');
|
||
dfpCls.wwvuwuwvu.overloads.forEach(function(ovl) {
|
||
ovl.implementation = function() {
|
||
const ret = ovl.apply(this, arguments);
|
||
console.log(TAG + ' DFP.wwvuwuwvu = ' + ret);
|
||
return ret;
|
||
};
|
||
});
|
||
} catch(e) {}
|
||
|
||
// ③ Hook uvwvuww — 最终 register 加密入口(可确认明文注入点)
|
||
['com.shopee.bke.lib.jni.utils.uvwuvwuv',
|
||
'com.shopee.bke.lib.jni.utils.uvwwwwuv'].forEach(function(className) {
|
||
try {
|
||
const encCls = Java.use(className);
|
||
if (encCls['uvwvuww']) {
|
||
encCls['uvwvuww'].overloads.forEach(function(ovl) {
|
||
ovl.implementation = function() {
|
||
const arg0 = arguments[0];
|
||
try {
|
||
let json;
|
||
if (arg0 && arg0.getClass && arg0.getClass().getName() === '[B') {
|
||
json = Java.use('java.lang.String').$new(arg0, 'UTF-8').toString();
|
||
} else {
|
||
json = '' + arg0;
|
||
}
|
||
if (json.includes('rdVerifyInfo')) {
|
||
console.log(TAG + ' uvwvuww register plaintext (len=' + json.length + '):\n' + json.substring(0, 3000));
|
||
}
|
||
} catch(e) {}
|
||
return ovl.apply(this, arguments);
|
||
};
|
||
});
|
||
console.log(TAG + ' hooked ' + className + '#uvwvuww');
|
||
}
|
||
} catch(e) {}
|
||
});
|
||
|
||
console.log(TAG + ' all hooks installed — trigger MariBank registration now');
|
||
});
|
||
```
|
||
|
||
---
|
||
|
||
## 六、结论
|
||
|
||
**3100012 最可能的触发链**:
|
||
|
||
```
|
||
libshpssdk_bank.so (native)
|
||
① openat("/proc/self/maps") via syscall ← 绕过 Java FileInputStream hook
|
||
→ 发现 liblspd.so / libzygisk.so / libgadget.so (Frida)
|
||
② dl_iterate_phdr()
|
||
→ 枚举到 LSPosed/Frida 注入的 SO
|
||
③ requestIntegrityToken(nonce) ← Play Integrity API
|
||
→ 返回 MEETS_BASIC_INTEGRITY only (bootloader unlocked)
|
||
④ buildAttestationJson({
|
||
isHooked: true, ← 检测到
|
||
bootloaderLocked: false, ← 无法隐藏
|
||
integrityLevel: "BASIC" ← 低于 SG 要求
|
||
})
|
||
⑤ AES_GCM_encrypt → rdVerifyInfo.data
|
||
⑥ 服务端解密 → risk_score > SG_THRESHOLD → 3100012
|
||
```
|
||
|
||
**优先级最高的三步**:
|
||
1. **PlayIntegrityFix** → 提升 Integrity 级别至 DEVICE(30 分钟)
|
||
2. **干净机重放实验** → 验证根因(需干净机配合)
|
||
3. **Frida spawn + RegisterNatives** → 定位 `vvuwuuvuu` 偏移 → Ghidra 分析明文结构
|
||
|
||
*2026-07-06 17:05 SGT*
|