R2Web - Browser-based Reverse Engineering Platform

A browser-based reverse engineering tool powered by Radare2 WebAssembly, similar to IDA Pro/Cutter/iaito.

English | 中文

Features

• 📁 File Analysis - Support for ELF, PE, Mach-O and other binary formats
• 🔍 Disassembly View - Assembly code with syntax highlighting
• 🔄 Decompiler View - Pseudo-C decompilation using radare2's pdc
• 📊 Control Flow Graph - Visual CFG with proper edge routing
• 🔢 Hex View - Raw hex dump with ASCII representation
• 📝 Strings View - Extracted strings from binary
• 📋 Functions List - All functions with navigation
• 📦 Sections/Symbols/Imports - Binary structure overview
• 💻 Console - Interactive radare2 command interface
• 🎨 Theme Support - Light/Dark theme with system detection
• 🌐 Multi-language - English/Chinese interface

Screenshots

Quick Start

Development

npm install
npm run dev
# Open http://localhost:5173

Build

npm run build

Tech Stack

• Frontend: React 19 + TypeScript + Vite
• Styling: CSS with Catppuccin theme
• Backend: radare2 compiled to WebAssembly via WASI
• Runtime: @wasmer/wasi for WASM execution

Project Structure

r2web/
├── src/
│   ├── components/     # UI components
│   ├── hooks/          # React hooks (useR2)
│   ├── lib/            # Core logic (R2WasiRuntime, WASIInit)
│   ├── types/          # TypeScript definitions
│   ├── styles/         # CSS styles
│   └── wasm/           # radare2 WebAssembly modules
├── scripts/            # Build scripts
├── index.html
├── vite.config.ts
└── package.json

WASM Modules

The project uses radare2 compiled to WebAssembly:

• radare2.wasm (~42MB) - Full analysis engine
• rasm2.wasm (~23MB) - Fast disassembly

These modules are loaded on-demand with progress tracking.

Building WASM from Source

If you want to compile the WASM modules yourself:

1. Install Emscripten SDK:

   git clone https://github.com/emscripten-core/emsdk.git
   cd emsdk
   ./emsdk install latest
   ./emsdk activate latest
   source ./emsdk_env.sh

2. Clone and compile radare2:

   git clone https://github.com/radareorg/radare2.git
   cd radare2
   ./sys/emscripten.sh  # Output: dist/web/radare2.wasm

3. Copy WASM files to src/wasm/:

   cp dist/web/*.wasm ../r2web/src/wasm/

Browser Requirements

• Modern browser with WebAssembly support
• SharedArrayBuffer enabled (requires COOP/COEP headers)
• Recommended: Chrome 88+, Firefox 89+, Safari 15+

Related Projects

• radare2 - The reverse engineering framework
• iaito - Qt GUI for radare2
• Cutter - Modern radare2 GUI

License

MIT License

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.