Hello eXi 
The Ark Devs released an “Ark Dev Kit” some days ago. But unfortunately it only focuses on creating “mods” in terms of either creating new maps or modifying the existing “TheIsland” map. But in all cases the mods are bound to a map and need to be delivered with them. So it is mainly “client sided”.
I hoped the UT “Mutator Tutorial” also works for ARK. But I think it won’t. But still, when searching the Server’s .exe and the provided .PDB file it contains alot of appearances of “Mutator”. So it seems like they implemented Mutator support, but without further API or source codes we can’t do anything with it anyway I guess.
So back to Process Injection … 
Thanks again