aircrack-ng(1)
NAME
aircrack-ng - a 802.11 WEP / WPA-PSK key cracker
SYNOPSIS
aircrack-ng [options] <.cap / .ivs file(s)>
DESCRIPTION
aircrack-ng is an 802.11 WEP and WPA/WPA2-PSK key cracking program. It can recover the WEP key once enough encrypted packets have been captured with airodump-ng. This part of the aircrack-ng suite determines the WEP key using two fundamental methods. The first method is via the PTW approach (Pyshkin, Tews, Weinmann). The main advantage of the PTW approach is that very few data packets are required to crack the WEP key. The second method is the FMS/KoreK method. The FMS/KoreK method incorporates various statistical attacks to discover the WEP key and uses these in combination with brute forcing. Additionally, the program offers a dictionary method for determining the WEP key. For cracking WPA/WPA2 pre-shared keys, a wordlist (file or stdin) or an airolib-ng has to be used.
OPTIONS
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. For SSID
containing special characters, see http://www.aircrack-
ng.org/doku.php?id=faq#how_to_use_spaces_double_quote_and_single_quote_etc._in_ap_names
-b <bssid> or --bssid <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.
-C <macs> or --combine <macs>
Merges all those APs MAC (separated by a comma) into a virtual
one.
-l <file>
Write the key into a file.
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> or --debug <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 (default attack).
-P <num> or --ptw-debug <num>
PTW debug: 1 Disable klein, 2 PTW.
-K Use KoreK attacks instead of PTW.
-D or --wep-decloak
WEP decloak mode.
-1 or --oneshot
Run only 1 try to crack key with PTW.
-M <num>
Specify maximum number of IVs to use.
WEP and WPA-PSK cracking options
-w <words>
Path to a dictionary file for wpa cracking. Specify "-" to use
stdin. Here is a list of wordlists: http://www.aircrack-
ng.org/doku.php?id=faq#where_can_i_find_good_wordlists
WPA-PSK options:
-E <file>
Create Elcomsoft Wireless Security Auditor (EWSA) Project file
v3.02.
-J <file>
Create Hashcat Capture file.
-S WPA cracking speed test.
-r <database>
Path to the airolib-ng database. Cannot be used with '-w'.
Other options:
-H or --help
Show help screen
-u or --cpu-detect
Provide information on the number of CPUs and MMX/SSE support
AUTHOR
This manual page was written by Adam Cecile <[email protected]> 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
airbase-ng(8) aireplay-ng(8) airmon-ng(8) airodump-ng(8) airodump-ng-oui-update(8) airserv-ng(8) airtun-ng(8) besside-ng(8) easside-ng(8) tkiptun-ng(8) wesside-ng(8) airdecap-ng(1) airdecloak-ng(1) airolib-ng(1) besside-ng-crawler(1) buddy-ng(1) ivstools(1) kstats(1) makeivs-ng(1) packetforge-ng(1) wpaclean(1)
Opportunity
Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.
Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.
Free Software
Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.
Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.
Free Books
The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.
Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.
Education
Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.
Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.
