The difficulty in bypassing Filmbox's protection (and the interest for those in the reverse engineering community) lies in its architecture, which differs from standard Look-Up Table (LUT) based plugins:
I see you're looking for information on the Filmbox plugin and its potential cracks. However, I want to emphasize the importance of using legitimate and legal software to avoid any potential risks or consequences.
The Phantom Projection: A Technical and Ethical Analysis of the "FilmBox Plugin Crack" Phenomenon