Conversion of embp files to mobi file format

embp to mobi conversion seems unlikely, because of the type of both file types, i.e. encrypted auxiliary file (.embp) and actualy ebook (.mobi). Everything points to the fact that .embp files are not ebooks, just files that contain list of changes made by the user whilst viewing the ebook, like annotations, corrections, marks etc as well as some metadata.

Open EMBP file    Open MOBI file