reversing-technique

reversing-technique is a skill for Claude Code, Codex from AeonDave/malskill. It costs 35 tokens per session (7,672 once invoked), scanned B, original, no licence file.

A guide to reverse engineering software, malware, firmware, and communication protocols in authorized assessments or laboratory work. Reverse engineering examines compiled or unfamiliar systems to understand how they work.

In plain words
What is it for?
Use it for malware triage, comparing software patches, analyzing firmware or protocols, reviewing protections, and documenting exploitability.
Why use it?
It helps structure difficult analysis and preserve evidence about protections, behavior, and whether an issue can be exploited.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it for malware triage, comparing software patches, analyzing firmware or protocols, reviewing protections, and documenting exploitability.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/aeondave/malskill/reversing-technique
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.

Any agent
npx skills add AeonDave/malskill --skill reversing-technique
Clone the repo
git clone --depth 1 https://github.com/AeonDave/malskill

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for reversing-technique

README.md
[![agentmods](https://agentmods.dev/badge/skills/aeondave/malskill/reversing-technique.svg)](https://agentmods.dev/skills/aeondave/malskill/reversing-technique)
Your own site
<a href="https://agentmods.dev/skills/aeondave/malskill/reversing-technique"><img src="https://agentmods.dev/badge/skills/aeondave/malskill/reversing-technique.svg" alt="Measured on agentmods" height="20"></a>
Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 7,672 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00035 $0.07672
Opus 5 $0.00017 $0.03836
Sonnet 5 $0.00007 $0.01534
Haiku 4.5 $0.00003 $0.00767

Measured 4d ago against content hash c362b8c5b77f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade B, and why

reversing-technique scanned grade B with 1 finding 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 4d ago.

The scan reads SKILL.md. This mod also ships 7 executable files (scripts/create_case.py, scripts/entropy_scan.py, scripts/iat_analyzer.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Reaches for credential filesmediumPrivilege escalation

SSH keys, cloud credentials, git-credentials, .npmrc, /etc/shadow: reading these is how a config file becomes a credential leak.

- Check `/etc/passwd`, `/etc/shadow`, SSH keys, certificate files.

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

offensive-techniques/reversing-technique/SKILL.md · 520 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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. 4d ago First seen · 520 lines · 35 tokens per session scan B c362b8c5b77f

Subscribe to this mod's changes

reversing-technique is a skill published in the GitHub repository AeonDave/malskill (18 stars, last pushed 3d ago), with no licence file. It adds 35 tokens to every session and 7,672 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it B with 1 finding (reaches for credential files). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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