What is Ducky Script?

Ducky Script is a simple and powerful scripting language designed for use with the Rubber Ducky USB device, a keystroke injection tool disguised as a regular USB thumb drive. It is an indispensable tool for penetration testers, security researchers, and IT professionals alike.

The Origin of Ducky Script

Rubber Ducky: The Device

The Rubber Ducky USB device, also known as the USB Rubber Ducky or simply the Ducky, was created by Hak5, a popular security and hacking community. It was designed to look like an innocent USB flash drive but hides a more devious purpose: to inject keystrokes into a computer at lightning speed.

The Birth of Ducky Script

Ducky Script was created to provide an easy way to write and execute payloads for the Rubber Ducky. It is a human-readable language, which makes it easy to learn and use, even for beginners. It offers a wide range of commands and syntax options, allowing users to create custom payloads for various purposes.

How Ducky Script Works

Syntax and Commands

Ducky Script uses a simple syntax, consisting of commands followed by arguments. These commands mimic keyboard input, such as pressing keys, typing strings, or introducing delays. Some of the most common commands include:

• STRING: types a string of characters
• DELAY: waits for a specified amount of time
• ENTER: simulates the Enter key
• REM: adds a comment to the script

Script Execution

When a Rubber Ducky device is plugged into a computer, it is recognized as a keyboard. The device then reads the Ducky Script payload stored on its microSD card and executes the commands as if they were being typed by a human. This allows the script to bypass many security measures, since the computer treats the input as legitimate keystrokes.

Real-World Applications of Ducky Script

Penetration Testing and Security Audits

Ducky Script is an essential tool for security professionals conducting penetration tests or security audits. It allows them to quickly and efficiently execute payloads, helping to identify vulnerabilities in systems and networks.

Automating Repetitive Tasks

Ducky Script can be used to automate mundane and repetitive tasks, such as data entry or system maintenance. By writing a custom script, users can save time and reduce the potential for human error.

Educational Purposes

Ducky Script is an excellent learning tool for those interested in cybersecurity, computer science, or programming. It offers a simple, hands-on introduction to scripting and can be used to teach concepts such as automation, input validation, and system vulnerabilities.

Writing Your First Ducky Script

Necessary Tools

To get started with Ducky Script, you’ll need the following:

1. A Rubber Ducky USB device
2. A microSD card with an adapter
3. A text editor, such as Notepad++ or Sublime Text
4. The DuckEncoder, a tool for converting your Ducky Script into a binary payload

Script Writing Tips

Commenting

When writing your Ducky Script, it’s essential to include comments to explain what each section of the script does. This makes it easier to understand, maintain, and modify your script. To add a comment, use the REM command, followed by the text of the comment.

Testing and Debugging

Before deploying your script, it’s crucial to test and debug it to ensure that it works as intended. You can use online Ducky Script emulators, such as the DuckyToolkit, to test your script without having to load it onto your Rubber Ducky device.

Staying Safe and Ethical

Legal Considerations

It’s important to note that using Ducky Script and the Rubber Ducky device can have legal implications. Unauthorized access to a computer system, even for testing purposes, can be illegal. Always obtain permission from the system owner before conducting any penetration tests or security audits.

Responsible Use of Ducky Script

Ducky Script is a powerful tool that can be used for both good and malicious purposes. As an ethical user, it’s your responsibility to use Ducky Script for legitimate purposes only, such as learning, security testing, or automating tasks with the system owner’s consent.

Ducky Script is a versatile and accessible scripting language designed for use with the Rubber Ducky USB device. It’s a valuable tool for security professionals, IT administrators, and learners alike. As you explore the world of Ducky Script, remember to use it responsibly and always consider the ethical and legal implications of your actions.

Frequently Asked Question’s