We’ve all been there.
You’re browsing a target site, hunting for bugs or debugging an API. You spot a request you want to modify—maybe just to change a user ID or replay a payload.
The Problem? To do that, you have to fire up Burp Suite (which takes memory), configure your browser proxy, install certificates, and deal with the lag. For a deep pentest, that’s fine. But for a quick check? It feels like overkill.
I got tired of the context switching. I wanted something that lived inside the browser but offered more power than the standard "Edit and Resend" feature in Chrome/Firefox.
So, I built ReVex.
🛡️ What is ReVex?
ReVex (Request Vex) is a browser extension that brings a full HTTP Repeater environment directly into Firefox DevTools.
It is designed for security researchers, bug bounty hunters, and frontend developers who need to debug traffic without leaving the tab. It features a high-contrast Cyberpunk/Hacker theme because, let’s be honest, we stare at screens all day—dark mode is non-negotiable.
✨ Key Features
Unlike standard network tools, ReVex is built for offensive security workflows:
🔄 Instant Capture & Replay: All requests in your tab are automatically captured. Click one, modify the headers, method, or body, and hit SEND.
🔓 CORS Bypass: It uses a background relay to bypass standard browser CORS restrictions, allowing you to send requests to any endpoint.
🧠 Magic Decoder: Highlight any string (Base64, JWT, URL-encoded), and ReVex auto-detects and decodes it instantly. No more switching to CyberChef for simple tasks.
⌨️ Copy as cURL: One-click generation of perfectly escaped cURL commands for your terminal.
🛠️ Under the Hood
ReVex is purely local. It does not transmit data to any cloud server. It uses the webRequest API to capture traffic and a background script to handle the replaying logic.
I built it using Vanilla JS to keep it ultra-lightweight. No React bloat, no heavy dependencies. Just fast, raw performance.
🚀 How to get it
ReVex is open-source and available now.
Firefox Add-on: https://addons.mozilla.org/en-US/firefox/addon/revex-hacker-s-http-repeater/
GitHub (Source Code): https://github.com/medjahdi/ReVex/
If you find it useful for your bug bounty hunting or API development, please consider starring the repo on GitHub! It helps a lot.
Happy Hacking. 👾
☕ Support the Project
ReVex is 100% free and open-source. If it helps you find a bug, saves you time, or you just like the cyberpunk vibe, you can support future development by buying me a coffee:
Top comments (0)