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What is AIRCRACK-NG


Aircrack-ng is a network software suite consisting of a detector, packet sniffer, WEP and WPA/WPA2-PSK cracker and analysis tool for 802.11 wireless LANs. It works with any wireless network interface controller whose driver supports raw monitoring mode and can sniff 802.11a, 802.11b and 802.11g traffic. The program runs under Linux, FreeBSD, macOS, OpenBSD, and Windows; the Linux version is packaged for OpenWrt and has also been ported to the Android, Zaurus PDA and Maemo platforms; and a proof of concept port has been made to the iPhone.



It focuses on different areas of WiFi security:

Monitoring: Packet capture and export of data to text files for further processing by third party toolsAttacking: Replay attacks, deauthentication, fake access points and others via packet injectionTesting: Checking WiFi cards and driver capabilities (capture and injection)Cracking: WEP and WPA PSK (WPA 1 and 2)

All tools are command line which allows for heavy scripting. A lot of GUIs have taken advantage of this feature. It works primarily Linux but also Windows, OS X, FreeBSD, OpenBSD, NetBSD, as well as Solaris and even eComStation 2.


Aircrack-ng

Aircrack-ng (www.aircrack-ng.org) is a suite of tools for auditing wireless networks. We will be using the airodump-ng, aireplay-ng, aircrack-ng, and airdecap-ng tools from the Aircrack-ng suite.

Airodump-ng captures raw 802.11 packets to be used with aircrack-ng. Airodump-ng is also capable of logging the coordinates of access points.

Aireplay-ng is primarily used to inject frames into wireless traffic, which will later be used by aircrack-ng to crack WEP and WPA-PSK keys. Aireplay-ng supports deauthentications, fake authentications, interactive packet replay and ARP request (reinjections.

Aircrack-ng can recover keys once enough data packets have been captured. Optimizations to the standard attack algorithms make wireless encryption cracking with Airocrack-ng much faster compared to other WEP cracking tools.

Airdecap-ng is used to decrypt encrypted capture files. It can also be used to strip wireless headers from capture files.


Wireless Cracking

Many organizations now employ wireless networking. Those that do not may still have their security compromised by rogue access points. Most attacks are perpetrated by insiders. Despite these facts, many penetration tests continue to focus on banging away at public Internet-facing systems. Ignoring wireless networking on a penetration test is a big mistake.

The Alfa AWUS036H USB wireless adapter is very popular among penetration testers. This adapter fully supports all of the wireless hacking functionality provided by aircrack-ng and other similar tools. You can do virtually everything you need with the aircrack-ng. Installation is as simple as running sudo apt-get install aircrack-ng.

Aircrack-ng contains several tools. Pseudo interfaces for wireless interfaces are easily created using sudo airmon-ng start < interface >. Wireless packets can then be sniffed using Wiresharkor tcpdump or the included airodump-ng utility. Once you know what networking situation you are dealing with, you can use aircrack-ng and possibly airbase-ng and aireplay-ng to crack the target network. These tools will be covered more fully in later chapters. For now, we will only concern ourselves with installing what we need for successful penetration tests.

There are a number of excellent sources for learning wireless hacking techniques. Vivek Ramachandran has produced an outstanding wireless networking megaprimer that is available at SecurityTube (http://www.securitytube.net/groups?operation=view&groupId=9). Vivek's megaprimer is also available in the form of his book BackTrack 5 Wireless Penetration Testing Beginner's Guide (Packt, 2011).



If you want to learn more see this link for reference :


https://en.wikipedia.org/wiki/Aircrack-ng


https://www.sciencedirect.com/topics/computer-science/aircrack-ng


An Ethical hacker should know the penalties of unauthorized hacking into a system. Read more at: Legality and Ethics


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