Hi @perceval,
If you are confident that the only thing you really need is dropping the new binary at a defined path (or just want to give it a go for fun and testing), then the easiest way is to use the Single File Update Module. It is installed by default, and you can implicitly use it through the web UI. Just select the file you want to deploy as artifact to upload, then you will be prompted for the path that it should be placed at. If you’re lucky, then this is all you need. If additional permission settings or such are needed, then you need to use the generator script as described in the linked Hub post.
Greetz,
Josef