How to Conduct a Security Assessment with Aircrack-ng and Reaver

はじめに

Warning: Obtaining unauthorized access to another's computer system or systems is illegal under the Computer Fraud & Abuse Act.

The following guide was made with the purpose of educating others on cyber security tools, technologies, and techniques with the intention of educating others on better protecting their own technologies and data. Please use the knowledge gained from this guide responsibly.

Aircrack-ng and Reaver are two powerful tools that security professionals and ethical hackers use to evaluate the robustness of Wi-Fi networks by testing their vulnerability to attacks. Whether you're a cybersecurity enthusiast or an IT professional looking to enhance your network defense skills, this guide will walk you through the process of performing security assessments to identify potential weaknesses and implement effective safeguards.

手順1 Launching Kali Linux

Start your computer, or VirtualMachine, and boot into Kali Linux.
Once Kali Linux has fully loaded, open the terminal or command line interface.

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手順2 Understanding Aircrack-ng

Aircrack-ng is a comprehensive suite of wireless network assessment tools.
It includes capabilities for capturing packets, performing dictionary attacks, and cracking WEP and WPA/WPA2-PSK keys.

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手順3 Scanning for Wireless Networks

In the terminal, enter the following command to start scanning for nearby wireless networks airodump-ng [wireless interface]
Replace [wireless interface] with the name of your wireless network interface (e.g., wlan0).
Aircrack-ng will display a list of available wireless networks along with their MAC addresses, signal strengths, and security protocols.

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手順4 Capturing Packets

Identify the target network you wish to assess from the list displayed by Aircrack-ng.
In the terminal, enter the following command to capture packets from the target network airodump-ng -c [channel] --bssid [BSSID] -w [output_file] [wireless interface]
Replace [channel] with the channel number of the target network, [BSSID] with the BSSID of the target network, [output_file] with the desired name of the output file, and [wireless interface] with the name of your wireless network interface.
Aircrack-ng will start capturing packets and saving them to the specified output file.

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手順5 Cracking WEP Encryption

If the target network uses WEP encryption, continue with this step.
In the terminal, enter the following command to crack the WEP key aircrack-ng -b [BSSID] -e [ESSID] -w [dictionary_file] [capture_file]
Replace [BSSID] with the BSSID of the target network, [ESSID] with the ESSID (network name) of the target network, [dictionary_file] with the path to a dictionary file, and [capture_file] with the path to the captured packets file.
Aircrack-ng will attempt to crack the WEP key using the provided dictionary file.

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手順6 Cracking WPA/WPA2-PSK Encryption with Reaver

If the target network uses WPA/WPA2-PSK encryption, continue with this step.
In the terminal, enter the following command to crack the WPA/WPA2-PSK key reaver -i [wireless interface] -b [BSSID] -c [channel] -vv
Replace [wireless interface] with the name of your wireless network interface, [BSSID] with the BSSID of the target network, and [channel] with the channel number of the target network.
Reaver will initiate the WPS (Wi-Fi Protected Setup) attack to crack the WPA/WPA2-PSK key.

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手順7 Analyzing Results and Mitigating Vulnerabilities

Once Aircrack-ng or Reaver has completed the cracking process, it will display the results if successful.
Use the obtained information responsibly and take appropriate measures to secure your own wireless network and address vulnerabilities in the target network if authorized.

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終わりに

Congratulations, you have successfully used both Aircrack-ng and Reaver to conduct your first security assessment on your network. Remember to exercise caution and ethical considerations when using both of these tools.

The most important thing you should take away from this guide is to remember to use this information responsibly. Obtaining unauthorized access to another's computer system or systems is illegal under the Computer Fraud & Abuse Act.

Please use the knowledge gained from this guide responsibly.