# Evm Audit Assembly

> Inline assembly, CREATE/CREATE2, EXTCODESIZE, and low-level opcode vulnerabilities. Covers metamorphic contracts, constructor-time code absence, assembly math overflow, and div-by-zero returning 0. Load when the contract uses inline assembly or CREATE2.

- Skill: `austintgriffith/evm-audit-assembly` (Agent Skill, multi-file: 5 files)
- Install (CLI): `npx skillmds@latest add austintgriffith/evm-audit-assembly`
- Raw SKILL.md: https://api.skillmd.com/api/skills/austintgriffith/evm-audit-assembly/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Security
- Author: austintgriffith (https://skillmd.com/u/austintgriffith)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/austintgriffith/evm-audit-assembly

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# EVM Audit — Assembly & Opcode Vulnerabilities
Load when auditing contracts that use inline assembly, Yul, CREATE/CREATE2, or low-level EVM opcodes.
## Reference Files
- `references/checklist.md` — Full assembly/opcode checklist