There have been lots of reports by many different people, and they even did an analysis of who it can likely be like Hal, or Nick Szabo, or other suggestions. The interesting part is that they say Satoshi wasn't the best coder or cryptographer, I forget which, but he did put it all together after all. You can of course purposefully post a few inaccuracies in order to lead the trail away from you, like he did at some points where he says "we", but it would be pretty dumb to use worse code in the final product if you can actually do it better.
If you're interested Schizo, here was a good article where Lopp did an analysis of the early blocks that were mined...
https://blog.lopp.net/was-satoshi-a-greedy-miner/