Aircrack-ng (Cracking)
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Aircrack-ng (Cracking)

Aircrack-ng

Aircrack-ng is considered an offline attack since it works with packet captures and doesn’t require interaction with any Wi-Fi device. It can crack WEP and WPA/WPA2 networks that use pre-shared keys or PMKID.

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# Estimates how many passphrases our CPU can crack approximately
aircrack-ng -S  

# DON'T use a dictionary for WEP files!!!!
aircrack-ng wep.cap

# crack a handshake saved in a cap file:
aircrack-ng -w <path to wordlist> -e <ESSID> -b <ap bssid> file.pcap
aircrack-ng -w /usr/share/john/password.lst -e <ESSID> -b <ap bssid> file.cap

# crack using a db created with airolib (precomputed PMKs)
aircrack-ng -r wifu.sqlite wpa1-01.cap

If in a capture file an AP has hidden name but we find it in another way, we need to pass both arguments to aircrack-ng, -b and -e, so that it can match a BSSID to an ESSID