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trailofbits/ruzzy

Ruzzy는 Trail of Bits에서 개발한 커버리지 기반 Ruby 퍼저입니다. 순수 Ruby 코드와 Ruby C 확장을 퍼징하는 데 사용됩니다.

ruzzy란 무엇인가요?

Ruzzy는 Trail of Bits가 개발한 오픈소스 Ruby 퍼징 도구로, AFL (American Fuzzy Lop)에서 영감을 받은 커버리지 가이드 퍼징 방식을 Ruby 생태계에 적용합니다. 순수 Ruby 코드뿐만 아니라 Ruby C 확장(네이티브 젬)의 퍼징도 지원하여, Ruby 애플리케이션과 젬 개발자들이 메모리 안전성 문제나 예외 상황을 찾는 데 유용합니다. ruzzy CLI 명령어를 통해 퍼징을 실행하며, 대상 함수에 대한 퍼징 후크를 정의하고, AFL 스타일의 커버리지 피드백을 사용해 더 효율적으로 버그를 탐지합니다. Ruzzy는 Ruby 2.7 이상, Linux/macOS 환경에서 동작하며, C 확장 퍼징을 위해서는 clang 컴파일러가 필요합니다. 주요 활용 사례로는 JSON 파서, 이미지 라이브러리, 네트워크 프로토콜 핸들러 등의 보안 취약점을 조기에 발견하는 데 사용됩니다.

지원 대상~Claude Code~Codex CLI~Cursor
npx skills add https://github.com/trailofbits/skills/tree/main/skills/ruzzy

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문서

ruzzy은(는) 무엇을 하나요?

Ruzzy는 Trail of Bits에서 개발한 커버리지 기반 Ruby 퍼저입니다. 순수 Ruby 코드와 Ruby C 확장을 퍼징하는 데 사용됩니다.

설치

gem install ruzzy

또는 Bundler를 사용하는 경우 Gemfile에 추가:

gem 'ruzzy'

사용법

Ruzzy는 ruzzy CLI를 제공합니다. 기본적인 퍼징 워크플로는 다음과 같습니다:

  1. 퍼징 대상 함수를 정의하는 Ruby 파일을 만듭니다.
  2. ruzzy 명령어로 퍼징을 실행합니다.

예제: 문자열 파서 퍼징

# fuzz_target.rb
require 'ruzzy'

Ruzzy.fuzz do |data|
  # 테스트하려는 코드 호출
  MyParser.parse(data)
rescue => e
  # 예외 발생 시 무시 (또는 기록)
end
ruzzy --target fuzz_target.rb --corpus ./corpus/

주요 기능

  • 커버리지 가이드 퍼징: AFL 스타일의 엣지 커버리지를 사용하여 효율적으로 입력을 변형합니다.
  • 순수 Ruby 퍼징: 별도의 C 확장 없이 Ruby 코드만으로 퍼징 가능.
  • C 확장 퍼징: clang으로 컴파일된 네이티브 젬도 커버리지 계측 가능.
  • 간단한 API: Ruzzy.fuzz 블록에 퍼징할 코드를 작성하고 CLI로 실행.

지원 환경

  • Ruby 2.7 이상
  • Linux, macOS (Windows는 현재 미지원)
  • C 확장 퍼징을 위한 clang 컴파일러

자세한 정보

Individual skills in this repo

This repo contains 20 individual skills — each has its own dedicated page.

trailofbits/address-sanitizer

AddressSanitizer detects memory errors during fuzzing. Use when fuzzing C/C++ code to find buffer overflows and use-after-free bugs.

trailofbits/aflpp

AFL++ is a fork of AFL with better fuzzing performance and advanced features. Use for multi-core fuzzing of C/C++ projects.

trailofbits/agentic-actions-auditor

Audits GitHub Actions workflows for security vulnerabilities in AI agent integrations including Claude Code Action, Gemini CLI, OpenAI Codex, and GitHub AI Inference. Detects attack vectors where attacker-controlled input reaches AI agents running in CI/CD pipelines, including env var intermediary patterns, direct expression injection, dangerous sandbox configurations, and wildcard user allowlists. Use when reviewing workflow files that invoke AI coding agents, auditing CI/CD pipeline security for prompt injection risks, or evaluating agentic action configurations.

trailofbits/algorand-vulnerability-scanner

Scans Algorand smart contracts for 11 common vulnerabilities including rekeying attacks, unchecked transaction fees, missing field validations, and access control issues. Use when auditing Algorand projects (TEAL/PyTeal).

trailofbits/ask-questions-if-underspecified

Clarify requirements before implementing. Use when serious doubts arise.

trailofbits/atheris

Atheris is a coverage-guided Python fuzzer based on libFuzzer. Use for fuzzing pure Python code and Python C extensions.

trailofbits/audit-augmentation

Augments Trailmark code graphs with external audit findings from SARIF static analysis results and weAudit annotation files. Maps findings to graph nodes by file and line overlap, creates severity-based subgraphs, and enables cross-referencing findings with pre-analysis data (blast radius, taint, etc.). Use when projecting SARIF results onto a code graph, overlaying weAudit annotations, cross-referencing Semgrep or CodeQL findings with call graph data, or visualizing audit findings in the context of code structure.

trailofbits/audit-context-building

Enables ultra-granular, line-by-line code analysis to build deep architectural context before vulnerability or bug finding.

trailofbits/audit-prep-assistant

Prepares codebases for security review using Trail of Bits' checklist. Helps set review goals, runs static analysis tools, increases test coverage, removes dead code, ensures accessibility, and generates documentation (flowcharts, user stories, inline comments).

trailofbits/burpsuite-project-parser

Searches and explores Burp Suite project files (.burp) from the command line. Use when searching response headers or bodies with regex patterns, extracting security audit findings, dumping proxy history or site map data, or analyzing HTTP traffic captured in a Burp project.

trailofbits/cairo-vulnerability-scanner

Scans Cairo/StarkNet smart contracts for 6 critical vulnerabilities including felt252 arithmetic overflow, L1-L2 messaging issues, address conversion problems, and signature replay. Use when auditing StarkNet projects.

trailofbits/cargo-fuzz

cargo-fuzz is the de facto fuzzing tool for Rust projects using Cargo. Use for fuzzing Rust code with libFuzzer backend.

trailofbits/chrome-mcp-troubleshooting

Diagnose and fix Claude in Chrome MCP extension connectivity issues. Use when mcp__claude-in-chrome__* tools fail, return "Browser extension is not connected", or behave erratically.

trailofbits/claude-in-chrome-troubleshooting

Diagnose and fix Claude in Chrome MCP extension connectivity issues. Use when mcp__claude-in-chrome__* tools fail, return "Browser extension is not connected", or behave erratically.

trailofbits/code-improver

Runs an autonomous review-and-fix improvement loop over any code target — a skill, plugin, module, or directory — using a reviewer the user names: any installed skill or agent. Keeps a cross-round findings ledger, escalates when fixes stop converging, and guards scope mechanically. Use when asked to 'improve this code until review passes', 'run an improvement loop with <reviewer>', or to iterate review-and-fix with a specific reviewer. For skills prefer the skill-improver entry; for a branch prefer pr-improver.

trailofbits/code-maturity-assessor

Systematic code maturity assessment using Trail of Bits' 9-category framework. Analyzes codebase for arithmetic safety, auditing practices, access controls, complexity, decentralization, documentation, MEV risks, low-level code, and testing. Produces professional scorecard with evidence-based ratings and actionable recommendations.

trailofbits/codeql

Scans a codebase for security vulnerabilities using CodeQL's interprocedural data flow and taint tracking analysis. Triggers on "run codeql", "codeql scan", "codeql analysis", "build codeql database", or "find vulnerabilities with codeql". Supports "run all" (security-and-quality + security-experimental suites) and "important only" (high-precision security findings) scan modes. Also handles creating data extension models and processing CodeQL SARIF output.

trailofbits/constant-time-analysis

Detects timing side-channel vulnerabilities in cryptographic code. Use when implementing or reviewing crypto code, encountering division on secrets, secret-dependent branches, or constant-time programming questions in C, C++, Go, Rust, Swift, Java, Kotlin, C#, PHP, JavaScript, TypeScript, Python, or Ruby.

trailofbits/constant-time-testing

Constant-time testing detects timing side channels in cryptographic code. Use when auditing crypto implementations for timing vulnerabilities.

trailofbits/cosmos-vulnerability-scanner

Scans Cosmos SDK blockchain modules and CosmWasm contracts for consensus-critical vulnerabilities — chain halts, fund loss, state divergence. 25 core + 16 IBC + 10 EVM + 3 CosmWasm patterns. Use when auditing custom x/ modules, reviewing IBC integrations, or assessing pre-launch chain security. Updated for SDK v0.53.x.

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