You could have a look at the many obfuscation tools that are out there, for example these:
- http://gapotchenko.com/eazfuscator.net
- http://orangeheap.blogspot.nl
-
http://confuser.codeplex.com (succeeded by https://yck1509.github.io/ConfuserEx/ and then again by https://github.com/XenocodeRCE/neo-ConfuserEx)
-
http://ntoolbox.com)