[Excel 2003] Read-only password : need second hash ?

[Mem5]

Hello,

Just succeed in colliding a excel 2003 password with -m 9710 then -m 9720. (oldoffice$0)

This gave me a working password to open the document.
To modify it, Excel ask me another password (the first one does not work).

For this second password, I guess we need a second hash, how to extract it ?

[epixoip]

The modify password doesn't need to be cracked, it can simply be removed. Save an unencrypted copy of the file, then use any of the tools available on the Internet to remove the modify password.

[Mem5]

Nice tip, thanks !