dsl-vm-reverse SKILL.md skillA
dsl-vm-reverse from novaestellar/novahaku is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add novaestellar/novahaku/dsl-vm-reverse@git:20260910.546fe86Pins git:20260910.546fe86 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- novaestellar/novahaku
- Path
testing/reverse-engineering/dsl-vm-reverse/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260910.546fe86, committed Sep 10, 2026
- Size
- 11,677 bytes
- Repository stars
- 28
- License
- MIT
Reverse JavaScript-based custom DSL/VM interpreters, non-standard WASM-like runtimes, and risk-control engines. Use when analyzing IIFE or switch-based opcode dispatchers, extracting instruction tables, recovering bytecode semantics, capturing VM state at runtime, or reconstructing execution flow.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# 🔄 DSL 自定义虚拟机逆向（DSL VM Reverse Engineering）
## ACTION REQUIRED（读完后立刻执行）
1. `NOW`: 确认当前任务是自定义 JS opcode VM / 风控引擎，不是标准 WASM 或普通 webpack
3. `ACT`: 从「3. 通用逆向工作流」Phase 1 做文件分类，不要停在目录
> 用于逆向基于 JavaScript 实现的自定义 WASM 虚拟机/风控引擎
---
## 目录
- [1. 适用范围](#1-适用范围)
- [2. DSL VM 识别特征](#2-dsl-vm-识别特征)
- [3. 通用逆向工作流](#3-通用逆向工作流)
- [4. Opcode 提取与分类](#4-opcode-提取与分类)
- [5. 运行时捕获方案](#5-运行时捕获方案)
- [6. 常见状态码](#6-常见状态码)
- [7. Skill 自检清单](#7-skill-自检清单)
---
## 1. 适用范围
当目标文件符合以下 **任意特征** 时使用本 skill：
| # | 特征 | 说明 |
|---|------|------|
| 1 | IIFE 开头 + 大量单字母变量名 | `!function(){var U=void 0,y=parseInt,E0=Function,...}` |
| 2 | 包含 `DG()` 或类似函数含 switch-case 循环 | 解释器主循环，`d[7]&31` 解码 opcode |
| 3 | 大文件（500KB+）但零字节占比 < 1% | 非标准 WASM，纯 JS |
| 4 | 包含 `C[number]` 常量表引用 | `C[9][xxx]` 函数表/字符串表 |
| 5 | 单行压缩代码 | 583KB 单行，混淆变量名 |
### 排除规则
| 条件 | 非本 skill | 转至 |
|------|-----------|------|
| 文件以 `\x00asm` 开头 | 标准 WASM 二进制 | `reverse-engineering/languages.md` |
| 文件以 `Uint8Array([0,97,115,109])` 含 WASM 魔术字 | WASM 嵌入式 | 提取 .wasm 后转 IDA/Ghidra |
| 标准 Webpack 打包（`function(e,t,n){...}`） | 普通 JS | `js-reverse/` |
| 零字节占比 > 20% | WASM 二进制 | `reverse-engineering/languages.md` |
---
## 2. DSL VM 识别特征
### 代码特征
…Read the whole file at its exact version.
How to install
mdr add novaestellar/novahaku/dsl-vm-reverse@sha256:52851a5f245704e8The line at the top of this page pins the label git:20260910.546fe86, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_7gmaxzsujn2l72d3)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 10, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (11677 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
novaestellar/novahaku · 28 stars · license MIT · pushed 2026-09-28 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_7gmaxzsujn2l72d3 GET https://markdownregistry.com/api/v1/resolve?ref=novaestellar/novahaku/dsl-vm-reverse GET https://markdownregistry.com/api/v1/blob/52851a5f245704e889844ca5c62567e5b8f98609863e2bffeda5510a441be4de
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.