Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add dslsdzc/rev-skills --skill re-android-nativegit clone --depth 1 https://github.com/dslsdzc/rev-skillsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/dslsdzc/rev-skills/re-android-native)<a href="https://agentmods.dev/skills/dslsdzc/rev-skills/re-android-native"><img src="https://agentmods.dev/badge/skills/dslsdzc/rev-skills/re-android-native.svg" alt="Measured on agentmods" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00048 | $0.03760 |
| Opus 5 | $0.00024 | $0.01880 |
| Sonnet 5 | $0.00010 | $0.00752 |
| Haiku 4.5 | $0.00005 | $0.00376 |
Grade A, and why
re-android-native scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 138 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Android 原生库（JNI/.so）逆向
入口判定（Decision Gate）
目标出现时先判形态，命中即转对应技能（自动调度分流）：
目标
├── APK
│ ├── lib/*.so 存在？──是──→ 本技能（re-android-native）
│ └── 无 so（纯 Java）──→ re-apk
├── 单独 .so
│ ├── JNI 符号（Java_* / JNI_OnLoad / RegisterNatives 调用点）──→ 本技能
│ ├── 加密库 API（SSL_*/EVP_*/crypto_* 等）──→ re-android-crypto（加密语义）
│ └── 普通 ELF（无 JNI 特征）──→ re-binary-core（re-format-elf）
├── 加固 so（壳壳/熵高/导入表极小）──→ re-anti-analysis / re-mobile-pack（脱壳后回本技能）
└── 加密体系审计目标（Keystore/Cipher）──→ re-android-crypto
何时使用 / 何时不用
- 用：APK 里的
lib/*.so原生库——JNI 接口还原、注册方式（静态/动态）、native 逻辑分析 - 用：Java 层逻辑清楚但核心算法/反调试在 native（游戏、加固、加密逻辑）
- 用：Java 层只看到
System.loadLibrary+native声明，要定位与还原 native 实现 - 不用：只要 APK Java 层静态（走 [[re-apk]]）；只要运行时 hook 不需要理解 .so 结构（走 [[re-frida]]）
- 不用：so 是加固壳壳（先按 [[re-mobile-pack]] / [[re-anti-analysis]] 脱壳，见坑 5）
- 注意：动态插桩按 [[platform-tips]] 最高原则在受控设备 / 模拟器快照内执行
工具准备
静态分析（readelf / Ghidra 导入 .so）免沙箱；动态（frida / xhook）按 [[platform-tips]] 最高原则在受控环境执行。所有工具先验证再使用。
反编译工作台（so 加载）—— [[re-ghidra]] / [[re-ida]]
- [[re-ghidra]]（默认）：
File > Import File直接导入 ELF .so（arm64/arm/x86_64 都支持），Data Type Manager 载入 jni.h 类型（见 [[re-ghidra]] 工具准备） - [[re-ida]]：加载 so 后 ARM64 反编译；
Option > Load new type载入 jni.h - 验证: 导入 arm64 .so 后能反编译出
JNI_OnLoad或Java_*导出函数
jni.h —— JNIEnv 函数表结构理解（Android NDK 自带）
- 无独立发行版包，随 Android NDK 提供。官方途径：Android Studio SDK Manager 安装 NDK，或命令行:
sdkmanager "ndk;27.2.12479018" # 先确认 sdkmanager 在 PATH（Android SDK cmdline-tools） # 或 GitHub android-ndk 官方仓库下载对应版本 zip - 关键文件：
$NDK/toolchains/llvm/prebuilt/linux-x86_64/sysroot/usr/include/jni.h（macOS 为 darwin-x86_64 路径） - 验证: 能打开 jni.h，看到
JNINativeInterface（函数表）与JNIEnv（函数表指针）定义
readelf（binutils）—— 导出表/架构识别（[[re-format-elf]] 联动）
- Linux:
apt install binutils/dnf install binutils/pacman -S binutils - macOS:
brew install binutils（greadelf） - 验证:
readelf --version
frida（[[re-frida]]）—— JNI 运行时观察
- 主机
pip install frida-tools；设备 frida-server 推送安装见 [[re-frida]] 工具准备 - 验证:
frida-ps -U能列出设备进程
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 7d ago First seen · 138 lines · 48 tokens per session scan A 893a12d367c3
re-android-native is a skill published in the GitHub repository dslsdzc/rev-skills (42 stars, last pushed 9d ago), licensed Apache-2.0. It adds 48 tokens to every session and 3,760 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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