A simple ARP spoofing tool written in C# for Windows/Linux environments.
Designed for ethical hacking and penetration testing purposes.

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Features

• List all network interfaces and select one to attack
• Discover gateway MAC address automatically
• Attempt to retrieve target MAC address by IP
• Simple console interface with clear messages
• Written in C#

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Installation

1. Clone the repository:

git clone https://github.com/joaostack/ArpSpoof.git
cd ArpSpoof

2. Restore dependencies:

dotnet restore

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Usage

Help Menu

sudo dotnet run --project src -- -h

Run the project with sudo (required for raw packet sending):

sudo dotnet run --project src -- --target-address <TARGET_IP> --gateway-address <GATEWAY_IP>

Example:

sudo dotnet run --project src -- --target-address 192.168.2.221 --gateway-address 192.168.2.1

You will be prompted to select a network interface.
The program will attempt to discover MAC addresses and start spoofing.

Demo 1

Demo 2

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Dependencies

• .NET SDK
• SharpPcap
• System.CommandLine

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Contributing

Feel free to open issues, submit bug reports, or suggest improvements.
Please respect ethical hacking principles and only test in environments you own or have permission to test.

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Author

João H. (joaostack) – GitHub