Thursday 20 July 2006

Summary of WiFi hacking tools

Air Crack
Aircrack is an 802.11 WEP and WPA-PSK keys cracking program that can recover keys once enough data packets have been captured. It implements the standard FMS attack along with some optimizations like KoreK attacks, thus making the attack much faster compared to other WEP cracking tools. In fact, aircrack is a set of tools for auditing wireless networks.

Air Decap
decrypts WEP/WPA capture files. Part of the aircrack suite.

Air Replay
802.11 packet injection program. Part of the aircrack suite.

Airpwn
Airpwn requires two 802.11 interfaces in the case where driver can't inject in monitor mode (lots of chipsets do nowadays, see HCL:Wireless for a list). It uses a config file with multiple config sections to respond to specific data packets with arbitrary content. For example, in the HTML goatse example, we look for any TCP data packets starting with "GET" or "POST" and respond with a valid server response including a reference to the canonical goatse image.

AirSnarf
Airsnarf is a simple rogue wireless access point setup utility designed to demonstrate how a rogue AP can steal usernames and passwords from public wireless hotspots. Airsnarf was developed and released to demonstrate an inherent vulnerability of public 802.11b hotspots snarfing usernames and passwords by confusing users with DNS and HTTP redirects from a competing AP

Airsnort
AirSnort is a wireless LAN (WLAN) tool which recovers encryption keys. AirSnort operates by passively monitoring transmissions, computing the encryption key when enough packets have been gathered.

CowPatty
Cowpatty is designed to audit the pre-shared key (PSK) selection for WPA networks based on the TKIP protocol. A while back, Robert Moskowitz published a paper titled "Weakness in Passphrase Choice in WPA Interface" that described a dictionary attack against wireless networks using the TKIP protocol with a pre-shared key (PSK). Supply a libpcap file that includes the TKIP four-way handshake, a dictionary file of passphrases to guess with and the SSID for the network

FakeAP
Black Alchemy's Fake AP generates thousands of counterfeit 802.11b access points. Hide in plain sight amongst Fake AP's cacophony of beacon frames. As part of a honeypot or as an instrument of your site security plan, Fake AP confuses Wardrivers, NetStumblers, Script Kiddies, and other undesirables

Genpmk
genpmk is used to precompute the hash files in a similar way to Rainbow tables is used to pre-hash passwords in Windows LANMan attacks. There is a slight difference however in WPA in that the SSID of the network is used as well as the WPA-PSK to "salt" the hash. This means that we need a different set of hashes for each and every unique SSID i.e. a set for "linksys" a set for "tsunami" etc

Hotspotter
Hotspotter passively monitors the network for probe request frames to identify the preferred networks of Windows XP clients, and will compare it to a supplied list of common hotspot network names. If the probed network name matches a common hotspot name, Hotspotter will act as an access point to allow the client to authenticate and associate. Once associated, Hotspotter can be configured to run a command, possibly a script to kick off a DHCP daemon and other scanning against the new victim

Karma
KARMA is a set of tools for assessing the security of wireless clients at multiple layers. Wireless sniffing tools discover clients and their preferred/trusted networks by passively listening for 802.11 Probe Request frames. From there, individual clients can be targetted by creating a Rogue AP for one of their probed networks (which they may join automatically) or using a custom driver that responds to services can then capture credentials or exploit client-side vulnerabilities on the host.

Kismet
Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system. Kismet will work with any wireless card which supports raw monitoring (rfmon) mode, and can sniff 802.11b, 802.11a, and 802.11g traffic. Kismet identifies networks by passively collecting packets and detecting standard named networks, detecting (and given time, decloaking) hidden networks, and infering the presence of nonbeaconing networks via data traffic.

Wep_crack
WepAttack is a WLAN open source Linux tool for breaking 802.11 WEP keys. This tool is based on an active dictionary attack that tests millions of words to find the right key. Only one packet is required to start an attack.

Wep_decrypt
a program for decrypting captured 802.11 traffic that is protect with WEP traffic. It reads in a pcap capture file, such as that generated by prismdump, and outputs another pcap capture file with decrypted packets. By default it will read from stdin and ouput to stdout. The key to decrypt with can be specified as a string of hex characters, optionally seperated by spaces or colons, or as a text string. If a text string is specified, the actual keying material will be generated by the string in the (ad hoc) standard fashion used by many drivers.

WifiTap
Wifitap is a proof of concept for communication over WLAN networks using traffic injection. Wifitap allows direct communication with an associated station to a given access point directly, whilst not being associated ourselves or being handled by access point.

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