Main Idea: Enter almost any arbitrary code into a textbox on the website and have the webapp automatically detect, run, and return the code's output!

• See it in action!

Run the following to install the Flask app in your present working directory.

git clone https://github.com/BlueSquare23/WriteAndRun.git
cd WriteAndRun
virtualenv venv 		# Virtual Env Optional
source venv/bin/activate 	# Virtual Env Optional
pip3 install -r requirements.txt

After installing the app you'll need to obtain a free API key by signing up for an Algorithmia account here. Once you have an API key from them you'll want to put it in a file named .env

• File: .env

ALGO_API_KEY=simX************************

This Python Flask application is really just a wrapper for two API's that do all the heavy lifting.

• First API

The first API is from Algorithmia. Their API is used here to do the programming language detection.

• Second API

The second API is Engineer Man's Piston API. This unique RCE API is used to execute the code after its source language has been determined.

You can start the application just by running, python app.py.

source venv/bin/activate        # Virtual Env Optional
python3 app.py

And then visit http://localhost:5000/ in a browser to use the app.

If this app seems inherently insecure that's because it probably is. In theory, all of the code entered into the site's textbox is sent to Engineer Man's Piston API and never run on the same server as the flask app itself. But yeah a textbox on a website intended to run code is a good target for H4xZ0rZ!

All that to say; Yee be warned! I would Not advise hosting this application on the public internet! I may have created a leaky flask. I claim no liability.

As for bugs my policy is, if it hurts when you do that don't do that.

Email all inquires to: [email protected]