: For older .xls (97-2003) formats, some tools use hex editing to change specific bytes that signal to Excel that a password is required.
Never run an unknown .exe from GitHub. Instead, run the Python script yourself so you can read every line of code before execution.
Elias stared at the screen. The tool hadn't just cracked a file; it had been a final test from a mentor who knew he’d eventually have to break the rules to save the day. If so, I can: Add a about what was actually in the files.
Once the file is re-zipped and renamed back to .xlsx , the protection is gone. :