Simple Shellcode Dissection
isc.sans.edu
isc.sans.edu
[0] String Obfuscation: Character Pair Reversal
https://isc.sans.edu/diary/String%20Obfuscation%3A%20Character%20Pair%20Reversal/29654
[1] https://github.com/DidierStevens/DidierStevensSuiteKeep in mind scdbg is an emulator, if you want to debug it and see what it does the best way I know is to use jmp2it and attach your favorite debugger.