Updating an old Flash interactive display

I have a museum display that runs as a Flash.exe file. The information is a series of slides with back, next, and main menu options. One slide has embedded audio files that plays when clicked.

Obviously, Flash has been discontinued, but we need to update the information in the display but keep the flow/operation the same. Any recommendations on what Adobe application could be used to do this?

I did not create the original, but am assuming the original slides were created in InDesign (I have this document), exported to jpgs, and then imported into Flash to create the final .exe used for the display.

Thank you.