Are you looking for something more thorough than MCA's KiXStrip? It doesn't encrypt, but makes it difficult to reverse engineer. I seem to recall that someone mentioned in a post how they package up everything including the Bat2Exe using a WinZip style self-extractor with encryption but it is still security-by-ignorance. The savy ones can still hack out your secrets.
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Give a man a fish and he will be back for more. Slap him with a fish and he will go away forever.