Openbullet 2 Plugins Patched Review

OpenBullet 2 (OB2) uses a hot-loadable plugin system that allows developers to extend the software's functionality without modifying the core source code. These plugins primarily add custom blocks

to the stacker, which can then be used in configurations to handle specialized tasks like advanced encryption, anti-bot bypasses, or integration with external services. 🛠️ Core Purpose of Plugins

Plugins bridge the gap between the standard OB2 toolset and unique site requirements. Custom Encryption

: Implement proprietary algorithms (e.g., HMAC, custom JS WebTokens) to sign requests. Anti-Bot Bypasses

: Add blocks that specifically target advanced detection systems like Cloudflare or Akamai. Captcha Integration

: Connect to specialized third-party solving services not included by default. External Data Handling

: Integrate with databases or proprietary APIs for live data logging or retrieval. Proxy-Seller How Plugins Work in OB2 OB2 is built on

(formerly .NET Core), making its plugin system cross-platform. docs.openbullet.dev Description Hot-Loading Openbullet 2 Plugins

Plugins can be added or removed while the application is running. User-Defined Blocks

Developers write C# code that appears as a new "Block" in the visual editor. File Format Compiled as files and placed in the UserData/Plugins directory. Config Inclusion

When a config uses a plugin-provided block, the plugin's name is noted in the config's JSON metadata. 📂 How to Install and Use Plugins : Obtain the compiled file from a trusted source (e.g., the official OB2 GitHub or verified community forums). : Move the (and any required dependencies) into the UserData/Plugins folder of your OB2 installation. Restart/Scan

: Restart the application or use the "Rescan" feature in the Plugins tab to load the new modules. Implementation : The new blocks will appear in the

under the specific category defined by the plugin developer. docs.openbullet.dev ⚠️ Security and Ethics Risk of Malware : Plugins are executable code. Never run

files from untrusted sources, as they can steal your data or infect your system.

: While OB2 is a legitimate web testing tool, it is frequently misused for illegal activities like credential stuffing OpenBullet 2 (OB2) uses a hot-loadable plugin system

. Always ensure you have explicit permission to test any target.

If you are looking to build your own, would you like to see a C# code template for a basic plugin or a guide on how to one in Visual Studio? External Libraries - OpenBullet 2

OpenBullet 2 (OB2) uses plugins to extend its core functionality, allowing users to add custom blocks to the config designer without needing to rebuild the entire application from source. These plugins are essentially .NET class libraries that interface with the OB2 ecosystem to provide new tools for data processing, external service integration, or advanced automation. Core Functionality of Plugins

Custom Blocks: Plugins primarily add new blocks to the block palette in the Config designer, which can then be dragged onto the canvas like standard HTTP or Parse blocks.

UI Customization: Developers can use attributes like [MultiLine] to change how input fields appear in the OB2 interface (e.g., as a text area instead of a single-line input).

External Integration: They allow OB2 to integrate with third-party services or specialized libraries that are not included in the base installation. How to Use and Install Plugins

Placement: Plugin files (typically .dll files) must be placed in the UserData/Plugins directory of your OpenBullet 2 installation. Sanitize Inputs: Never trust user input

Activation: You can view, install, and manage (activate/deactivate) these through the Plugins tab in the OpenBullet 2 web interface.

Loading: A restart of the application is generally required for OB2 to recognize and load new .dll files from the plugins folder.

openbullet/OB2PluginSample: Sample plugin for OB2 ... - GitHub

Sample plugin for OB2 with a dependency. Please refer to this guide to understand how to use this. openbullet-plugin/README.md at master - GitHub

OpenBullet Plugins Sample plugins for OpenBullet with well-commented code.

Sample plugins for OpenBullet with well-commented code. - GitHub

7. Best Practices & Security

1. Sanitize Inputs: Never trust user input. If your plugin parses JSON or HTML, ensure it handles errors without crashing the entire application.
2. Async Support: If your plugin performs I/O operations (HTTP requests, File I/O), consider overriding ExecuteAsync instead of Execute to prevent freezing the UI.

   public override async Task<BlockExecutionResult> ExecuteAsync()
   await Task.Delay(1000); // Example async work
       return BlockExecutionResult.Success("done", "true");
   

3. Code Signing: If you distribute plugins, consider signing your assemblies so users know the source is legitimate.
4. Avoid Bloat: Do not include massive libraries (like full web browsers) inside a simple plugin DLL unless absolutely necessary, as this increases config loading times.

4. Deployment & Configuration

4. Anatomy of a Plugin (The Code)

A plugin consists of a class that inherits from specific interfaces. The most common is creating a custom Block.

Typical plugin architecture

• Built as DLLs or assemblies (for .NET-based versions) or as scripts following the host’s plugin API.
• Expose a defined set of interfaces and metadata so OpenBullet 2 can discover and load them.
• Include configuration schema, UI descriptors (optional), and documentation for input parameters and outputs.

4. Hashing & Encoding

For API security testing.

• Supported algorithms: MD5, SHA1, SHA256, SHA512, Base64, JWT decode.
• Use case: Testing a password reset endpoint where the email must be sent as an MD5 hash.
• Example: CryptoChain.dll.