AirJack: A Powerful and Versatile Wireless Hacking Tool
How to Download AirJack: A Wireless Packet Injection Tool
If you are looking for a powerful and versatile tool for wireless hacking, you might want to check out AirJack. AirJack is a device driver (or suit of device drivers) for 802.11 (a/b/g) raw frame injection and reception. It is meant as a development tool for all manner of 802.11 applications that need to access the raw protocol. In this article, we will show you how to download, install, and use AirJack for various wireless hacking scenarios.
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What is AirJack and why use it?
AirJack is an open source software tool designed for network security professionals to test and secure wireless networks. It was initially developed by Joshua Wright in 2005 as a proof-of-concept project and has since been used by security researchers and practitioners to identify vulnerabilities in wireless networks.
AirJack features and benefits
Some of the main features and benefits of using AirJack are:
It supports most of the wide variety of 802.11b PCMCIA cards based on the Intersil Prism 2 chipset.
It allows arbitrary packet capture and creation using libpcap or the Linux low-level sockets interface.
It can perform various attacks on wireless networks, such as denial of service (DoS), man-in-the-middle (MitM), replay, injection, fragmentation, etc.
It can crack WEP and WPA keys using brute force or exploiting known flaws in legacy protocols.
It comes with several tools and example programs for demonstrating several wireless security issues.
AirJack use cases and examples
Some of the common use cases and examples of using AirJack are:
Sniffing wireless traffic and analyzing network structure and activity.
Injecting forged packets and taking a network down via a DoS attack.
Intercepting and modifying wireless packets in transit via a MitM attack.
Capturing and replaying packets that generate responses (e.g., ARP requests) to crack WEP keys.
Using dictionary or rainbow tables to crack WPA keys.
How to install AirJack on Linux
AirJack is designed to run on Linux systems with kernel version 2.4 or higher. To install AirJack on your Linux machine, you will need some prerequisites and follow some steps.
Prerequisites and requirements
Before installing AirJack, you will need the following:
A Linux system with kernel version 2.4 or higher.
A wireless card that supports radio frequency monitoring mode (RFMON) based on the Intersil Prism 2 chipset. You can check if your card is compatible by running iwconfig.
The source code for the version of the pcmcia-cs package used by your Linux distribution. You can obtain it from [11](
The latest version of AirJack from [1](
Steps to install AirJack from source
To install AirJack from source, follow these steps:
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Unpack the pcmcia-cs package in a directory (e.g., /usr/src/pcmcia-cs-3.2. 8).
Unpack the AirJack package in the same directory (e.g., /usr/src/airjack-0.6.0a).
Change to the AirJack directory and run ./configure to check for dependencies and configure the installation.
Run make to compile the AirJack driver and tools.
Run make install as root to install the AirJack driver and tools.
Reboot your system to load the AirJack driver.
Troubleshooting tips and common errors
If you encounter any problems or errors while installing or using AirJack, here are some tips to help you:
Make sure your wireless card is compatible with AirJack and supports RFMON mode. You can check this by running iwconfig and looking for the Monitor mode in the output.
Make sure you have the correct version of the pcmcia-cs package for your Linux distribution. You can check this by running cardmgr -V.
If you get an error message like FATAL: Module airjack not found, try running /sbin/depmod -a as root and rebooting your system.
If you get an error message like Error inserting 'airjack' (/lib/modules/2.4.20-8/kernel/drivers/net/wireless/airjack.o): Operation not permitted, try running /sbin/modprobe airjack as root.
If you get an error message like Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Invalid argument, try running /sbin/iwpriv wlan0 rfmontx 1 as root.
If you have any other questions or issues, you can refer to the [2]( or [3]( pages on the AirJack website.
How to use AirJack for wireless hacking
Once you have installed AirJack on your Linux system, you can start using it for various wireless hacking purposes. Here are some examples of how to use AirJack for capturing and injecting packets, performing DoS and MitM attacks, and cracking WEP and WPA keys.
How to capture and inject packets with AirJack
To capture and inject packets with AirJack, you will need two tools: wlanctl-ng and wlaninject-ng. The former is used to configure your wireless card and put it in RFMON mode, while the latter is used to capture and inject packets using libpcap or raw sockets.
To capture packets with AirJack, follow these steps:
Run wlanctl-ng wlan0 lnxreq_ifstate ifstate=enable as root to enable your wireless card (assuming it is wlan0).
Run wlanctl-ng wlan0 lnxreq_wlansniff enable=true channel=6 keepwepflags=true prismheader=true stripfcs=true as root to put your wireless card in RFMON mode on channel 6 (or any other channel you want).
Run wlaninject-ng -i wlan0 -c -s 100 -w capture.pcap as root to start capturing packets on wlan0 and saving them to a file called capture.pcap. You can use any other options or filters you want.
To stop capturing packets, press Ctrl-C.
To inject packets with AirJack, follow these steps:
Create a packet file using a tool like [4]( or [5]( or use an existing packet file.
Run wlaninject-ng -i wlan0 -r packet.pcap -c 1000 -d 10000 -t 1 -x 1 -m 1 -f 1 -p 1 -a 1 -b 1 -e 1 -n 1 -u 1 -v 1 -w 1 -y 1 -z 1 as root to inject packets from packet.pcap on wlan0. You can use any other options or parameters you want.
To stop injecting packets, press Ctrl-C.
How to perform DoS and MitM attacks with AirJack
To perform DoS and MitM attacks with AirJack, you will need two tools: airjack-dos and airjack-mitm. The former is used to generate and send packets that cause network disruption, while the latter is used to intercept and modify packets in transit.
To perform a DoS attack with AirJack, follow these steps:
Run wlanctl-ng wlan0 lnxreq_ifstate ifstate=enable as root to enable your wireless card (assuming it is wlan0).
Run wlanctl-ng wlan0 lnxreq_wlansniff enable=true channel=6 keepwepflags=true prismheader=true stripfcs=true as root to put your wireless card in RFMON mode on channel 6 (or any other channel you want).
Run airjack-dos -i wlan0 -t 00:11:22:33:44:55 -m 1 -n 1000 -d 10000 as root to send 1000 deauthentication packets every 10 seconds to the target MAC address 00:11:22:33:44:55. You can use any other options or parameters you want.
To stop the DoS attack, press Ctrl-C.
To perform a MitM attack with AirJack, follow these steps:
Run wlanctl-ng wlan0 lnxreq_ifstate ifstate=enable as root to enable your wireless card (assuming it is wlan0).
Run wlanctl-ng wlan0 lnxreq_wlansniff enable=true channel=6