how to make a usbrubber ducky

David Muir

2 min read

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06-09-2024

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Creating a USB Rubber Ducky is a fun and engaging project that combines hardware and programming knowledge. A USB Rubber Ducky is essentially a device that mimics a keyboard and can execute pre-programmed keystrokes when plugged into a computer. This guide will walk you through the essential steps to build your own USB Rubber Ducky.

What You Will Need

Before diving into the creation process, gather the following materials:

1. Microcontroller: An Arduino Leonardo or a Teensy board works well.
2. USB Cable: To connect your microcontroller to your computer.
3. Push Button (optional): For a reset function.
4. LED (optional): To indicate when the device is active.
5. Breadboard and jumper wires: For easy connections (if using a microcontroller that requires wiring).
6. Software: The Arduino IDE or Teensyduino.

Optional Tools:

• Soldering iron and solder (if you want a more permanent solution).
• Enclosure for your USB Ducky.

Step-by-Step Guide

Step 1: Setting Up the Microcontroller

1. Install Software:

   • Download and install the Arduino IDE or Teensyduino on your computer.

2. Connect Microcontroller:

   • Use the USB cable to connect your Arduino or Teensy board to your computer.

3. Install Libraries:

   • Make sure to install the necessary libraries for keyboard emulation. For Arduino, include the Keyboard.h library in your code.

Step 2: Writing the Script

Creating the payload script is the heart of your USB Rubber Ducky. This script consists of a series of keystrokes that the device will execute.

1. Open Arduino IDE.

2. Write a Sample Script: Here’s a simple script that opens Notepad and types a message:

   #include <Keyboard.h>
   
   void setup() {
       // Start the keyboard emulation
       Keyboard.begin();
   
       // Give some time before the script runs
       delay(5000);
   
       // Open Notepad
       Keyboard.press(KEY_LEFT_GUI); // Press Windows key
       Keyboard.press('r');           // Press 'R' to open Run dialog
       Keyboard.releaseAll();         // Release all keys
       delay(500);
   
       // Type 'notepad'
       Keyboard.print("notepad");
       Keyboard.press(KEY_RETURN);    // Press Enter
       Keyboard.releaseAll();         // Release all keys
       delay(500);
   
       // Type a message
       Keyboard.print("Hello, this is a USB Rubber Ducky!");
       Keyboard.press(KEY_RETURN);    // Press Enter
       Keyboard.releaseAll();         // Release all keys
   
       // Finish keyboard emulation
       Keyboard.end();
   }
   
   void loop() {
       // Do nothing here
   }
   

3. Upload the Code:

   • Click on the upload button in the Arduino IDE to transfer the code to your microcontroller.

Step 3: Testing Your USB Rubber Ducky

1. Plug in the Device:

   • Unplug and then plug your microcontroller back into the USB port of your computer.

2. Watch It Work:

   • After a short delay, the device will simulate the keystrokes and execute your script.

Step 4: Finalizing Your Project

• Optional Enhancements:
  • You can add an enclosure to protect your device.
  • If using LEDs or a button, integrate them into your design for added functionality.

Important Notes

• Use Responsibly: Always ensure you are authorized to run scripts on any computer. Unauthorized access or use can lead to severe legal consequences.
• Limitations: The speed of execution can vary based on the computer’s processing speed. Make sure to include sufficient delays in your script for it to work properly.

Conclusion

Creating your own USB Rubber Ducky can be an enriching experience that combines creativity with technical skills. Whether for educational purposes, ethical hacking, or simply for fun, this project allows you to explore the fascinating world of USB devices.

More Information

For more related articles on programming and electronics, check out our guides on Arduino Projects for Beginners and Advanced Keyboard Emulation Techniques. Happy coding!