die-in-browser

Static binary analysis with Detect It Easy — 100% in your browser, no uploads.

🔍 What is this?

This project runs Detect It Easy (DIE) — a powerful static binary analyzer — entirely inside your browser using the v86 emulator.

• ✅ No file uploads: binaries are processed locally.
• ✅ Full analysis: all detections, entry point, sections (in PE file), hashes, entropy, strings.

Built with:

• Buildroot 2025.11 – minimal Linux system for the guest OS;
• v86 – x86 emulator in JavaScript/WebAssembly;
• Detect It Easy 3.21 (diec) – console version of DIE for headless analysis;
• Docker – for reproducible builds;

🚀 Try it now

👉 Live Demo

📂 Source Code – demo source code

⚠️ Everything runs in your browser — the initial load includes a ~17 MB emulator state file. Also, large binaries may take longer to analyze.

📦 Use as a Library

You can embed this analyzer directly into your own web app.

Option 1: Use prebuilt assets

Download everything you need from the Releases page:

• v86.wasm, libv86.js
• seabios.bin
• Compressed emulator state (v86state.bin.zst)

💡 The v86state.bin.zst file contains a full snapshot of the Linux system with DIE preinstalled and is approximately 17 MB in size.

Option 2: Build it yourself

Follow the instructions in the next section.

Then:

1. Place the files in your project directory.
2. Put die.js in the same folder.

📌 See the library/ folder for usage example and full API docs.

🛠️ Build from source

Prerequisites: Docker with BuildKit enabled.

git clone https://github.com/xoreaxlmbdx/die-in-browser.git
cd die-in-browser
./build.sh

The build output will appear in ./build/ and includes:

• v86.wasm, libv86.js
• seabios.bin
• licenses.tar.gz
• buildroot-state.bin.zst (compressed emulator snapshot)

🙌 Acknowledgements

• v86 emulator — copy/v86;
• Detect It Easy — horsicq/Detect-It-Easy;
• Buildroot config — humphd/browser-vm;
• Buildroot;

📝 License

MIT — free to use and modify.

📄 The build includes a licenses.tar.gz archive (generated by Buildroot) that contains license texts for all components used in the guest system.