performing-fuzzing-with-aflplusplus

Perform coverage-guided fuzzing of compiled binaries using AFL++ (American Fuzzy Lop Plus Plus) to discover memory corruption, crashes, and security vulnerabilities. The tester instruments target binaries with afl-cc/afl-clang-fast, manages input corpora with afl-cmin and afl-tmin, runs parallel fuzzing campaigns with afl-fuzz, and triages crashes using CASR or GDB scripts. Activates for requests involving binary fuzzing, crash discovery, coverage-guided testing, or AFL++ fuzzing campaigns.

Jump to install

Repository: autohandai/community-skills
Last source activity: March 16, 2026 at 00:29
Detected SKILL.md language: English
Stars: 10
Forks: 3

Install options

The review-first prompt is selected by default. You can switch to a direct command or download a local copy.

Install with Codex or Claude Copy this prompt, paste it into Codex, Claude, or another assistant, and let it review the skill page and install it for you.

A direct command skips the review prompt. Inspect the source before running it.

npx skills add https://github.com/autohandai/community-skills --skill performing-fuzzing-with-aflplusplus

The command stays on one line. Scroll horizontally to inspect it before copying.

Prefer a local copy? Download the files currently available to SkillsMP.

Review the source files

Read SKILL.md and any companion files shown by SkillsMP before deciding whether to install.

File Explorer

4 files

SKILL.md

Source instructions · Read-only preview

Back to search Back to installation

extension-builder

Build, convert, validate, and install Autohand extensions, including Pi adaptations.

2026-07-15

deep-research-skills

Run Weizhena's Deep Research workflow in Autohand Code for outline generation, deep web investigation, structured evidence capture, and final research reports.

2026-07-03

aaronontheweb-dotnet-skills

Use Aaronontheweb dotnet-skills for Claude Code-oriented .NET maintenance, refactoring, and agent workflows.

2026-06-30

View all from this repository

Performing Fuzzing with AFL++

Overview

AFL++ is a community-maintained fork of American Fuzzy Lop (AFL) that provides coverage-guided fuzzing for compiled binaries. It instruments targets at compile time or via QEMU/Unicorn mode for binary-only fuzzing, then mutates input corpora to discover new code paths. AFL++ includes advanced scheduling (MOpt, rare), custom mutators, CMPLOG for input-to-state comparison solving, and persistent mode for high-throughput fuzzing.

Prerequisites

AFL++ installed (apt install afl++ or build from source)

Target binary source code (for compile-time instrumentation) or QEMU mode for binary-only

Initial seed corpus of valid inputs for the target format

Linux system with /proc/sys/kernel/core_pattern configured

Steps

Instrument the target binary with afl-cc or afl-clang-fast

Prepare seed corpus directory with minimal valid inputs

Minimize corpus with afl-cmin to remove redundant seeds

Run afl-fuzz with appropriate flags (-i input -o output)

Monitor fuzzing progress via afl-whatsup and UI stats

Triage crashes with afl-tmin minimization and CASR/GDB analysis

Report unique crashes with reproduction steps

Expected Output

+++ Findings +++ unique crashes: 12 unique hangs: 3 last crash: 00:02:15 ago +++ Coverage +++ map density: 4.23% / 8.41% paths found: 1847 exec speed: 2145/sec