reverse-engineering

A set of techniques for understanding how compiled, hidden, packed, or virtualized software works. It covers programs such as binaries, Android apps, WebAssembly, firmware, and custom virtual machines.

In plain words
What is it for?
Use it to study program behavior before attempting exploitation or solving a reverse-engineering task, including analysis of anti-debugging or anti-analysis logic.
Why use it?
It helps when the original source code is unavailable or deliberately difficult to inspect. The description does not provide enough detail to say which specific techniques are included.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/dotnetdreamer/open-android-dex/reverse-engineering
Any agent
npx skills add dotnetdreamer/open-android-dex --skill reverse-engineering
Clone the repo
git clone --depth 1 https://github.com/dotnetdreamer/open-android-dex

Made for: Claude Code, Codex.

Per session 117 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,542 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00117 $0.03542
Opus 5 $0.00059 $0.01771
Sonnet 5 $0.00023 $0.00708
Haiku 4.5 $0.00012 $0.00354

Measured 2d ago against content hash 87905a8f679a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reverse-engineering 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 2d 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.

.claude/skills/reverse-engineering/SKILL.md · 213 lines

The source is not reproduced here

Licensed GPL-3.0

The repository is licensed GPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Changes

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.

  1. 2d ago First seen · 213 lines · 117 tokens per session scan A 87905a8f679a

Subscribe to this mod's changes

reverse-engineering is a skill published in the GitHub repository dotnetdreamer/open-android-dex (51 stars, last pushed 5d ago), licensed GPL-3.0. It adds 117 tokens to every session and 3,542 once invoked, about $0.0006 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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