Downloading a .epub from a .acsm

I want to transfer books I buy on Google Play (downloads a .acsm) to my Kobo reader device. Everything I can find on internet about it: - has you running Adobe Digital Editions - aims at removing the DRM I want to avoid both: I'm fine with the DRM as long as I can read the book on my device, and I don't want to run ADE through wine or otherwise (already lost hours trying that). I guess acsm -> epub "conversion" is mostly a download, but are there conversions/encryptions along the way ? There is an url in the `` tag in the .acsm, but also a lot of other parameters. Is there a way to download "manually" (without ADE) ?