Here's the source code for a Chrome-Extension that helps you uploading your homework in ILIAS after the deadline.
ONLY WORKING ON ILIAS 4.x.x !

https://www.dropbox.com/s/lz4mwdadp9fvce9/ili_chrome.crx

• just visit the upload area of an exercise
• the extension adds a button for every exercise unit
• click one of these → the standard upload page appears
• the extension added custom upload buttons, which work even after the deadline

• acces the upload form after the deadline
• upload files after the deadline

• delete files after the deadline
• fake the upload's timestamp

I am not responsible for what YOU do with this extension. It is just for educational purpose, of course.