Webinject

Webinject

Webinject is an open-source web proxy and HTTP toolkit that allows you to intercept, inspect, and modify web traffic on the fly. It can be used for testing, security analysis, and debugging web apps and APIs.
Webinject image
proxy interception inspection modification web-traffic http toolkit testing analysis debugging

Webinject: Open-Source Web Proxy & HTTP Toolkit

An open-source web proxy and HTTP toolkit for intercepting, inspecting, and modifying web traffic on the fly, useful for testing, security analysis, and debugging web apps and APIs.

What is Webinject?

Webinject is an open-source web proxy and HTTP toolkit that allows developers and security professionals to intercept, inspect, modify, mock, and replay web traffic. It works by acting as a man-in-the-middle proxy that sits between a web client such as a browser and backend web servers.

Some key features of Webinject include:

  • Intercepting and modifying requests and responses on the fly
  • Editing POST data, headers, cookies etc.
  • Mocking backend API responses
  • Replay traffic from file or previous network flows
  • HTTPS decryption and certificate spoofing
  • Extensive scripting capabilities for advanced use cases
  • Exporting traffic to various formats like HTML and HAR

Webinject can be used for a variety of purposes:

  • Testing and debugging web apps and APIs
  • Security testing and analysis
  • Reverse engineering web services
  • Simulating various browser behaviors
  • Rapid prototyping and mocking
  • Performance testing and benchmarking

With its flexibility and extensive tooling, Webinject provides developers and testers a powerful way to analyze and manipulate web-based systems and traffic.

Webinject Features

Features

  1. Intercept and modify requests and responses
  2. Inject custom JavaScript into pages
  3. Replay requests
  4. Export HTTP traffic captures
  5. HTTPS inspection and modification
  6. Automatic authentication handling
  7. Extensible through scripts and plugins

Pricing

  • Open Source
  • Free

Pros

Powerful tool for debugging and testing web apps

Good for security testing and analysis

Open source and free

Highly customizable and extensible

Cons

Steep learning curve

Requires technical knowledge to use effectively

Potential for abuse if used improperly

Does not work well with complex modern web apps


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