man aircrack (Commandes) - aircrack is a 802.11 WEP key cracker.
NAME
aircrack is a 802.11 WEP key cracker.
SYNOPSIS
aircrack [options] <.cap / .ivs file(s)>
DESCRIPTION
aircrack is a 802.11 WEP key cracker. It implements the so-called Fluhrer - Mantin - Shamir (FMS) attack, along with some new attacks by a talented hacker named KoreK. When enough encrypted packets have been gathered, aircrack can almost instantly recover the WEP key.
OPTIONS
- Common options:
- -a <amode>
- Force the attack mode, 1 for WEP and 2 for WPA-PSK.
- -e <essid>
- Select the target network based on the ESSID. This option is also required for WPA cracking if the SSID is cloacked.
- -b <bssid>
- Select the target network based on the access point's MAC address.
- -p <nbcpu>
- On SMP systems, set this option to the number of CPUs.
- -q
- If set, no status information is displayed.
- Static WEP cracking options:
- -c
- Search alpha-numeric characters only.
- -d <start>
- Force the beginning of the WEP key. Only useful for debugging purposes.
- -m <maddr>
- Only keep the IVs coming from packets that match this MAC address. Alternatively, use -m ff:ff:ff:ff:ff:ff to use all and every IVs, regardless of the network (this disables ESSID and BSSID filtering).
- -n <nbits>
- Specify the length of the key: 64 for 40-bit WEP, 128 for 104-bit WEP, etc., until 256 bits of length. The default value is 128.
- -i <index>
- Only keep the IVs that have this key index (1 to 4). The default behaviour is to ignore the key index in the packet, and use the IV regardless.
- -f <fudge>
- By default, this parameter is set to 2. Use a higher value to increase the bruteforce level: cracking will take more time, but with a higher likelihood of success.
- -k <korek>
- There are 17 KoreK attacks. Sometimes one attack creates a huge false positive that prevents the key from being found, even with lots of IVs. Try -k 1, -k 2, ... -k 17 to disable each attack selectively.
- -x
- Don't bruteforce the last 2 keybytes.
- -y
- This is an experimental single brute-force attack which should only be used when the standard attack mode fails with more than one million IVs.
- WPA-PSK cracking options:
- -w <words>
- Path to a dictionary file for wpa cracking.
AUTHOR
This manual page was written by Adam Cecile <gandalf@le-vert.net> for the Debian system (but may be used by others). Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 any later version published by the Free Software Foundation On Debian systems, the complete text of the GNU General Public License can be found in /usr/share/common-licenses/GPL.