What's the approach to modify an Animate CC app and redistribute it

Question

I have the source files of a flash application we outsourced years ago. I need to modify (add a logo) the app. Instead of outsourcing that again, we want to do it ourselves (we own the app).

The folder contains these files :

• Main folder

  • com/

    • greensock/

    • [...]

  • appName.app/

    • [...]

  • src/

    • [...]

  • data.xml

  • appName.exe

  • appName.fla

  • appName.swf

  • [...]

From what I understand from reading online, the .fla is the modifiable file and the .swf is the published version (unmodifiable).

So my question is, to add a logo to the app background design, what would be the approach to take ? Would modify the appName.fla, republish the appName.swf and then find how to generate the executable from that be the way to go ?