Bettercap is one of the powerful tools used to attack networks. This tool is often used by security professionals for penetration testing and by network administrators to monitor their network security. In this article, we will discuss how to use Bettercap on Kali Linux with easy-to-understand steps.

What is Bettercap?

Bettercap is a network security framework that supports various attacks such as sniffing, spoofing, and Man-In-The-Middle (MITM) attacks. This tool supports many protocols and has an easy-to-use interface. With Bettercap, you can monitor network activity and analyze data packets sent in the network.

Steps to Use Bettercap on Kali Linux

1. Installing Bettercap

Before using Bettercap, make sure this tool is installed on your Kali Linux system. If not, follow these steps:

sudo apt update
sudo apt install bettercap

Bettercap will be automatically installed along with all its dependencies.

2. Verifying the Installation

Once the installation is complete, make sure Bettercap is installed correctly by running the following command:

bettercap --version

If Bettercap was successfully installed, the version of the tool will be displayed in the terminal.

3. Running Bettercap

To run Bettercap, use the following command:

sudo bettercap

Bettercap will start running and you will enter its interactive mode.

4. Using Bettercap Interfaces

Before starting the attack, you need to determine which network interface to use. To see a list of available network interfaces, run the following command inside the Bettercap console:

net.show

Once you find a suitable interface, select it with the following command:

set net.interface <interface_name>

Replace <interface_name> with the name of your network interface, such as eth0 or wlan0.

5. Network Scanning

To scan all devices connected to your network, run the following command:

net.probe on

The detected devices will be displayed in a list that includes their IP address and MAC address.

6. Running a MITM Attack

Bettercap allows you to run Man-In-The-Middle (MITM) attacks. Here are the steps:

1. Enable ARP Spoofing

Enable ARP Spoofing with the following command:

arp.spoof on

2. Sniffing Data Packets

To capture and analyze data packets, enable the sniffing module:

net.sniff on

3. Saving Sniffing Data

You can also save the sniffing results to a file:

set net.sniff.output sniffed_data.pcap

The file will be saved in .pcap format which can be analyzed using tools such as Wireshark.

7. Perform DNS Spoofing

DNS Spoofing allows you to redirect network users to a different IP address. To run DNS Spoofing, follow these steps:

1. Enable DNS Spoofing Module

dns.spoof on

2. Define DNS Spoofing Rules

Add DNS spoofing rules to the configuration file:

echo "example.com 192.168.1.100" > /usr/share/bettercap/caplets/dns\_spoof.cap

Replace example.com with the target domain and 192.168.1.100 with the IP address you want.

8. Using HTTPS Downgrade

Bettercap can be used to force network users to use HTTP instead of HTTPS. To do this, enable the https.proxy feature:

https.proxy on

However, keep in mind that this feature requires additional configuration and may be illegal if used without permission.

Important Notes

1. Use Ethically

Bettercap is a very powerful tool, but its use must be in accordance with the law and ethics. Never use it for illegal purposes.

2. Testing Environment

It is recommended to use Bettercap only on networks that you own or in a suitable testing environment.

3. Permissions for Use

Make sure you have explicit permission to test on a particular network before using this tool.

Conclusion

Bettercap is one of the best tools for penetration testing and network security. By following the steps above, you can start using Bettercap on Kali Linux for various purposes, such as scanning networks, sniffing data, and running MITM attacks. Always remember to use this tool responsibly and in accordance with applicable laws.

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