http://astrillrcpusdryujyzbsl7wsugvyfc5s6veyrpkojiqbrorgkfdxvid.onion/terms-of-service
Subject to section 1.2, you may not (and you may not permit anyone else to) copy, modify, create a derivative work of, reverse engineer, decompile or otherwise attempt to extract the source code of the Software or any part thereof, unless this is expressly permitted or required by law, or unless you have been specifically told that you may do so by Astrill, in writing.