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aircrack-ng

NAME

aircrack-ng - a 802.11 WEP / WPA-PSK key cracker

SYNOPSIS

aircrack-ng [options] <.cap / .ivs file(s)>

DESCRIPTION

aircrack-ng is a 802.11 WEP / WPA-PSK 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-ng can almost instantly recover the WEP key.

OPTIONS

-H, --help

Shows the help screen.

Common options:

-a <amode>

Force the attack mode, 1 or wep for WEP and 2 or wpa 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 MAC address.

-p <nbcpu>

Set this option to the number of CPUs to use (only available on SMP systems). By default, it uses all available CPUs

-q

If set, no status information is displayed.

Static WEP cracking options:

-c

Search alpha-numeric characters only.

-t

Search binary coded decimal characters only.

-h

Search the numeric key for Fritz!BOX

-d <mask>

Specify mask of the key. For example: A1:XX:CF

-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 512 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 or -x0

Disable last keybytes bruteforce (not advised).

-x1

Enable last keybyte bruteforcing (default)

-x2

Enable last two keybytes bruteforcing.

-X

Disable bruteforce multithreading (SMP only).

-s

Shows ASCII version of the key at the right of the screen

-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.

-z

Uses PTW (Andrei Pyshkin, Erik Tews and Ralf-Philipp Weinmann) attack.

WPA-PSK cracking options:

-w <words>

Path to a dictionary file for wpa cracking. Specify "-" to use stdin.

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 or 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.

SEE ALSO

airmon-ng(1)
airdecap-ng(1)
aireplay-ng(1)
airodump-ng(1)
airtun-ng(1)
packetforge-ng(1)
ivstools(1)
kstats(1)
makeivs(1)