If I understood your request correctly at the moment there are no such Marketplace applications/add-ons which would allow connecting the Leads generated by Drupal sites to the Creatio application. Thank you for giving a nice idea! We have created a request for developing and further implementation of this kind of functionality for our R&D team.
At the same time as a possible solution, the JS script which is being used for HTML sites (on the Landing page in the Creatio application) should be converted/translated to PHP.
