[How To?] Integrating myBB users into Drupal userDB

[gungrave41]

Has anybody done integrating mybb into drupal? I'm trying to figure out a way to make both mybb and my drupal site share the same user accounts... I'm digging drupal documentations but i'm quite unfamiliar with the custom module hooks practices. All I can do is dig mybb user credentials upon registration...  If this is possible I plan to redirect drupal registration to the mybb site coz they will just be the same then. Any help is appreciated <3