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Are there any tutorials available for learning how to do encryption of an EXE ? I am particular interested on how it decrypt's itself and runs in memory.
If there are any tutorials or post that explain the basics of this please refer me them.
Thanks.
Check out packing and unpacking techniques, find and reverse some known ones to see how they work. Apart from encryption techniques, you can also check other anti-reversing techniques like the good-old code obsfucation, junk bytes and how malwares analyze your runtime environment, your registry (if in windows) and your running threads to see if they are being debugged.
