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yara-rule-authoring

> Guides authoring of high-quality YARA-X detection rules for malware identification.

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About

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Guides authoring of high-quality YARA-X detection rules for malware identification.

Use when writing, reviewing, or optimizing YARA rules. Covers naming conventions,

string selection, performance optimization, migration from legacy YARA, and false

positive reduction. Triggers on: YARA, YARA-X, malware detection, threat hunting,

IOC, signature, crx module, dex module.

What it can do

  • >
  • Guides authoring of high-quality YARA-X detection rules for malware identification.
  • Use when writing, reviewing, or optimizing YARA rules. Covers naming conventions,
  • string selection, performance optimization, migration from legacy YARA, and false
  • positive reduction. Triggers on: YARA, YARA-X, malware detection, threat hunting,
  • IOC, signature, crx module, dex module.

Setup

  1. Install: npx skills add trailofbits/skills --all
  2. The skill auto-loads when relevant, or invoke it by name in your agent.

Prerequisites

A compatible AI coding agent (Claude Code, Cursor, etc.).

Use cases

designwriting

Works with

Claude CodeAny agent (.md)

Trust score — 9/10

/10 trustVerified

Trail of Bits is a top-tier security research firm; their skills are professional-grade auditing and fuzzing playbooks used by their own engineers. Open source.

Sources

Every fact above was checked against these sources. Where a claim comes from the provider and couldn't be independently verified, the text says so.