Captivate SWF files convert to HTML5 when all you have is the published SWF files.

I need to convert some old Adobe Captivate SWF files to HTML5 but my problem is all I have is the published Adobe Captivate files that are on the server.  I do not have the original Adobe Captivate file.  I do have access to the published file that was exported.  Is there a way to use those file for a conversion?