I have E-modules which were published as flash and was uploaded in moodle as a SCORM packaged compressed (zip) files, now that I want to convert these contents to HTML 5 I am unable to do so as I don't have the source files with me, could anyone please help how to convert these zip files using Adobe Captivate 2017 release?
You don't have to read the technical explanations, look at the embedded tutorial.
Since you don't have the raw cptx-files you have only one possibility as suggested: capture the SWF while it is playing using Video Demo (or an alternative like Camtasia). Use the output video file to create an interactive video in Captivate. This works well for not too complicated courses. You can eventually add quiz slides in the file as well if you need to report a score to the LMS. Interactive video only support Knowledge check slides. Here is an example of an interactive video, a Captivate tutorial: