# Aircrack-ng — WiFi Network Security Auditing Suite

> A complete suite of WiFi security tools for monitoring, attacking, testing, and cracking wireless networks, used by security professionals for authorized WiFi assessments.

## Install

Save in your project root:

# Aircrack-ng — WiFi Network Security Auditing Suite

## Quick Use
```bash
# Install on Debian/Ubuntu
sudo apt install aircrack-ng

# Put wireless adapter in monitor mode
sudo airmon-ng start wlan0

# Scan for networks
sudo airodump-ng wlan0mon

# Capture handshake for a specific network
sudo airodump-ng -c 6 --bssid AA:BB:CC:DD:EE:FF -w capture wlan0mon

# Crack WPA handshake with wordlist
aircrack-ng -w /usr/share/wordlists/rockyou.txt capture-01.cap
```

## Introduction
Aircrack-ng is a network security toolkit focused on WiFi security assessment. It provides tools for packet capture, deauthentication testing, WEP/WPA cracking, and wireless network analysis. It is a standard tool in penetration testing distributions and is used by security professionals to audit the strength of wireless network configurations.

## What Aircrack-ng Does
- Captures raw 802.11 frames in monitor mode for offline analysis
- Cracks WEP keys using statistical attacks on captured initialization vectors
- Recovers WPA/WPA2 pre-shared keys by testing captured handshakes against wordlists
- Tests network resilience with deauthentication and fake access point injection
- Analyzes packet captures for reconnaissance and traffic pattern identification

## Architecture Overview
Aircrack-ng is written in C with a modular design where each tool handles a specific function. Airmon-ng manages monitor mode interfaces, airodump-ng captures packets, aireplay-ng injects frames, and aircrack-ng performs key recovery. The cracking engine uses optimized PBKDF2-SHA1 implementations with SIMD acceleration (SSE2, AVX2) for WPA key derivation. Tools communicate via standard pcap capture files.

## Self-Hosting & Configuration
- Available in most Linux distribution repositories and included in Kali Linux
- Requires a wireless adapter with monitor mode and packet injection support
- Builds from source with autotools; optional hwloc for CPU topology awareness
- No configuration files; all options are passed via command-line flags
- Works on Linux, FreeBSD, macOS, and Windows (with limited driver support)

## Key Features
- WPA/WPA2 PSK cracking with dictionary and brute-force attacks
- PMKID-based attack for clientless WPA handshake capture
- WEP cracking via FMS, KoreK, and PTW statistical attacks
- Packet injection for deauthentication, fake authentication, and replay
- Integration with GPU cracking via Hashcat for accelerated WPA recovery

## Comparison with Similar Tools
- **Bettercap** — broader network MITM framework; Aircrack-ng is specialized for WiFi-layer attacks
- **Kismet** — passive wireless detection and monitoring; Aircrack-ng adds active attack capabilities
- **Wifite** — automated WiFi auditing wrapper around Aircrack-ng and other tools
- **Hashcat** — GPU-accelerated hash cracking; often used alongside Aircrack-ng for WPA key recovery
- **Reaver** — focused on WPS PIN brute-forcing; Aircrack-ng covers the broader WiFi assessment workflow

## FAQ
**Q: What wireless adapters work with Aircrack-ng?**
A: Adapters with chipsets supporting monitor mode and injection, such as Atheros AR9271, Ralink RT3070, and Realtek RTL8812AU, are commonly recommended.

**Q: Can it crack WPA3?**
A: WPA3 uses Simultaneous Authentication of Equals (SAE), which resists offline dictionary attacks. Aircrack-ng's WPA cracking targets WPA/WPA2 PSK handshakes.

**Q: Is monitor mode required?**
A: Most offensive features require monitor mode. Some analysis and cracking operations can work on previously captured pcap files without live hardware.

**Q: How long does WPA cracking take?**
A: Speed depends on the wordlist size and hardware. CPU-based cracking processes thousands of keys per second; GPU-accelerated cracking via Hashcat reaches millions per second.

## Sources
- https://github.com/aircrack-ng/aircrack-ng
- https://www.aircrack-ng.org/

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Source: https://tokrepo.com/en/workflows/asset-0f49b63d
Author: AI Open Source