AirJack: A Tool for 802.11 Raw Frame Injection and Reception
If you are interested in developing or testing 802.11 applications that need to access the raw protocol, you might want to check out AirJack. AirJack is a device driver (or a suite of device drivers) that allows you to inject and receive raw frames on 802.11 (a/b/g) networks. In this article, we will explain what AirJack is, how it works, what are its features and benefits, what are its limitations and risks, how to download and install it, and how to use it for 802.11 applications.
What is AirJack?
AirJack is a tool that was created by abadd0n and xx25 as an open source project on SourceForge.net. It is designed as a development tool for all kinds of 802.11 applications that need to access the raw protocol, such as replay attacks, deauthentication, fake access points, packet sniffing, packet injection, etc. AirJack can also be used for educational purposes, such as learning about the 802.11 protocol and its vulnerabilities.
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How does AirJack work?
AirJack works by providing a device driver (or a suite of device drivers) that can interface with various wireless network cards that support 802.11 (a/b/g) standards. The device driver allows you to send and receive raw frames on the wireless network, bypassing the normal protocol stack. This way, you can manipulate the frames at any layer of the protocol, from the physical layer to the application layer.
What are the features and benefits of AirJack?
Some of the features and benefits of AirJack are:
It supports various wireless network cards that use different chipsets, such as Prism2/2.5/3, Atheros, Broadcom, Intel, etc.
It supports various operating systems, such as Linux, Windows, Mac OS X, etc.
It allows you to inject and receive raw frames on any channel and frequency of the 802.11 (a/b/g) spectrum.
It allows you to perform various 802.11 attacks and tests, such as replay attacks, deauthentication, fake access points, packet sniffing, packet injection, etc.
It allows you to monitor and analyze the results of your attacks and tests with tools such as Wireshark, tcpdump, etc.
It is free and open source, so you can modify it according to your needs and preferences.
What are the limitations and risks of AirJack?
Some of the limitations and risks of AirJack are:
It may not work with some wireless network cards or operating systems that are not supported or compatible.
It may require root or administrator privileges to install and run it on your system.
It may interfere with your normal wireless network connection or other wireless devices in your vicinity.
It may violate some laws or regulations regarding wireless network security or privacy in your country or region.
It may expose you or your system to potential attacks or threats from other malicious users or hackers on the wireless network.
How to download and install AirJack?
Requirements and compatibility
To download and install AirJack, you will need:
A wireless network card that supports 802.11 (a/b/g) standards and has a compatible chipset with AirJack. You can check the list of supported chipsets on the AirJack website.
An operating system that supports AirJack. You can check the list of supported operating systems on the AirJack website.
A tool to download and extract the AirJack files, such as wget, tar, unzip, etc.
A tool to compile and install the AirJack device driver, such as gcc, make, etc.
A tool to monitor and analyze the wireless network traffic, such as Wireshark, tcpdump, etc.
Download sources and instructions
You can download the latest version of AirJack from the SourceForge.net website. The download file is a compressed archive that contains the source code and documentation of AirJack. You can choose between different formats, such as .tar.gz, .zip, .rar, etc. depending on your preference and system.
To download the AirJack file, you can use a command-line tool such as wget or curl, or a graphical tool such as a web browser. For example, to download the AirJack file using wget, you can use the following command:
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wget
This will download the file to your current directory. You can also specify a different directory or filename if you want.
Installation steps and tips
To install AirJack, you will need to extract the downloaded file, compile the source code, and load the device driver. Here are the steps to do that:
Extract the downloaded file using a tool such as tar, unzip, or unrar. For example, to extract the file using tar, you can use the following command:
tar -xvzf airjack-0.6.5.tar.gz
This will create a directory named airjack-0.6.5 that contains the source code and documentation of AirJack.
Change to the airjack-0.6.5 directory using the cd command:
cd airjack-0.6.5
Compile the source code using the make command:
make
This will create a file named airjack.o that is the device driver for AirJack.
Load the device driver using the insmod command with root or administrator privileges:
sudo insmod airjack.o
This will load the device driver into your system and create a network interface named airjack0 that you can use for 802.11 raw frame injection and reception.
You can check if the device driver is loaded correctly using the lsmod command:
lsmod grep airjack
This will show you some information about the device driver, such as its size and usage count.
If you encounter any errors or problems during the installation process, you can check the README file or the FAQ file in the airjack-0.6.5 directory for some troubleshooting tips and solutions. How to use AirJack for 802.11 applications?
Once you have installed AirJack, you can use it for various 802.11 applications that need to access the raw protocol. Here are some examples of such applications and how to use AirJack for them:
Examples of 802.11 applications that can use AirJack
Replay attack: A replay attack is a type of attack that involves capturing a valid frame on the wireless network and retransmitting it later to cause some effect, such as authentication, association, disassociation, etc. For example, you can capture a deauthentication frame from an access point and replay it later to disconnect a client from the network.
Deauthentication: A deauthentication is a type of frame that is used to terminate a connection between a client and an access point. For example, you can send a deauthentication frame to a client or an access point to force them to disconnect from the network.
Fake access point: A fake access point is a type of device that pretends to be a legitimate access point on the wireless network. For example, you can create a fake access point with the same SSID and MAC address as a real one and trick clients into connecting to it.
Packet sniffing: Packet sniffing is a type of activity that involves capturing and analyzing the frames on the wireless network. For example, you can capture and analyze the frames on the wireless network to learn about the network topology, traffic patterns, encryption methods, etc.
Packet injection: Packet injection is a type of activity that involves creating and sending custom frames on the wireless network. For example, you can create and send custom frames on the wireless network to test the network performance, security, functionality, etc.
How to inject and receive raw frames with AirJack
To inject and receive raw frames with AirJack, you will need to use some tools that can interface with the airjack0 network interface. Some of these tools are:
AirJack tools: These are some tools that are included in the AirJack package and can be used for various 802.11 applications. Some of these tools are airjack-inject, airjack-receive, airjack-replay, airjack-deauth, airjack-fakeap, etc. You can find more information about these tools in the README file or the man pages in the airjack-0.6.5 directory.
Wireshark: This is a popular tool that can be used for capturing and analyzing network traffic. You can use Wireshark to capture and analyze the frames on the airjack0 network interface. You can also use Wireshark to create and send custom frames on the airjack0 network interface.
Tcpdump: This is another popular tool that can be used for capturing and analyzing network traffic. You can use tcpdump to capture and analyze the frames on the airjack0 network interface. You can also use tcpdump to create and send custom frames on the airjack0 network interface.
To use these tools with AirJack, you will need to specify the airjack0 network interface as the source or destination of the frames. For example, to capture the frames on the airjack0 network interface using Wireshark, you can use the following command:
wireshark -i airjack0
To send a custom frame on the airjack0 network interface using tcpdump, you can use the following command:
tcpdump -i airjack0 -w frame.pcap
This will write the frame to a file named frame.pcap that you can edit and modify using Wireshark or other tools.
How to monitor and analyze the results with AirJack
To monitor and analyze the results of your 802.11 applications with AirJack, you will need to use some tools that can display and interpret the frames on the wireless network. Some of these tools are:
Wireshark: As mentioned before, Wireshark can be used for capturing and analyzing network traffic. You can use Wireshark to display and interpret the frames on the airjack0 network interface or any other wireless network interface. You can also use Wireshark to filter, sort, search, export, graph, etc. the frames according to your needs.
Tcpdump: As mentioned before, tcpdump can be used for capturing and analyzing network traffic. You can use tcpdump to display and interpret the frames on the airjack0 network interface or any other wireless network interface. You can also use tcpdump to filter, sort, search, export, etc. the frames according to your needs.</ the frames according to your needs.
AirJack tools: Some of the AirJack tools can also be used for monitoring and analyzing the results of your 802.11 applications. For example, airjack-receive can display the frames that are received on the airjack0 network interface. You can also use airjack-receive to filter, sort, search, export, etc. the frames according to your needs.
To use these tools with AirJack, you will need to specify the airjack0 network interface as the source or destination of the frames. For example, to display the frames that are received on the airjack0 network interface using airjack-receive, you can use the following command:
airjack-receive -i airjack0
To display the frames that are captured on any wireless network interface using Wireshark, you can use the following command:
wireshark -k -i any
Conclusion
In this article, we have introduced AirJack, a tool that allows you to inject and receive raw frames on 802.11 (a/b/g) networks. We have explained what AirJack is, how it works, what are its features and benefits, what are its limitations and risks, how to download and install it, and how to use it for various 802.11 applications. We hope that this article has been informative and helpful for you.
If you want to learn more about AirJack, you can visit the AirJack website or the AirJack forum for more information and support. You can also check out some other related tools and resources, such as:
Aircrack-ng: This is a suite of tools that can be used for wireless network security auditing and testing. It includes tools for cracking WEP and WPA/WPA2 encryption keys, capturing and analyzing network traffic, creating fake access points, etc.
Scapy: This is a powerful Python library that can be used for creating and manipulating network packets. It can be used for various network applications and tests, such as packet injection, packet sniffing, packet crafting, etc.
Kali Linux: This is a Linux distribution that is designed for security professionals and ethical hackers. It includes a collection of tools and utilities for various security tasks and tests, such as penetration testing, forensics, reverse engineering, etc.
FAQs
Here are some frequently asked questions about AirJack:
Q: Is AirJack legal?A: AirJack is a tool that can be used for legal or illegal purposes depending on how you use it and where you use it. You should always check the laws and regulations regarding wireless network security and privacy in your country or region before using AirJack. You should also respect the rights and permissions of other wireless network users and owners. You should only use AirJack for legitimate purposes such as development, testing, education, etc.
Q: Is AirJack safe?A: AirJack is a tool that can expose you or your system to potential attacks or threats from other malicious users or hackers on the wireless network. You should always be careful and vigilant when using AirJack and protect yourself and your system from possible harm. You should also backup your data and system before using AirJack in case of any damage or loss.
Q: Is AirJack reliable?A: AirJack is a tool that may not work with some wireless network cards or operating systems that are not supported or compatible. You should always check the compatibility and requirements of AirJack before using it. You should also test AirJack on a non-critical wireless network before using it on a critical one.
Q: Is AirJack updated?A: AirJack is a tool that was last updated in 2004. It may not support some newer wireless network cards or operating systems that have been released since then. You may encounter some bugs or errors when using AirJack with newer devices or systems. You may also miss some features or functions that have been added to newer versions of 802.11 standards or protocols.
Q: Is there an alternative to AirJack?A: There are some alternatives to AirJack that can also be used for 802.11 raw frame injection and reception. Some of these alternatives are Lorcon, Radiotap, Libpcap, etc. You can check out these alternatives and compare them with AirJack to see which one suits your needs better.
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