FormulaWat

Who doesn't love a good spreadsheet? wat could go wrong...

Files

• index.php - The original challenge
• index_debug.php - The original challenge with extra debugging to make it more obvious what's happening with the formulas
• index_harder.php - Harder version of the challenge
• poc.html - My original PoC exploit, thanks to all those who have shared their solutions and shown me easier ways of doing it!

Running

Should be pretty easy to get the app up and running if you have Docker installed already:

docker compose up -d --build

Then just hit the web server at http://localhost:9999

Alternatively you could run it outside a container, and just use composer require phpoffice/phpspreadsheet to install the 1 required library.