Modernize Python 2 code to get ready for Python 3

[cclauss]

See #2 Some minimal, "safe" changes to make the code syntax compatible with both Python 2 and Python 3.

• Run futurize --stage1 http://python-future.org/futurize_cheatsheet.html

Python 3 syntax compatibility does not mean that the port is complete. More work will be require to complete the port to Python 3.

• Not yet fixed in 3 files: python3 -c "'\UserInit'" # --> SyntaxError: (unicode error)

$ flake8 . --count --show-source --statistics --select=E901,E999,F821,F822,F823

./registry_persistence.py:35:11: E999 SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 19-20: truncated \uXXXX escape
	payload = "c:\windows\system32\userinit.exe,{}".format(executable)
          ^
./cliconfig_dll_hijack.py:18:0: E999 SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 162-163: malformed \N character escape
"""
^
./sysprep_dll_hijack.py:22:0: E999 SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 280-281: truncated \UXXXXXXXX escape
"""
^
3     E999 SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 162-163: malformed \N character escape
3

[rootm0s]

At the moment, this is not a priority. Rewriting the dll hijack functions atm. might port it to python3 later. Unless someone can send a pull-request with all the changes needed, I can merge it.

[cclauss]

LOL... This is that PR.

[rootm0s]

@cclauss Sorry, somehow missed it. I will have a look later.

[cclauss]

Some files were completely changed by the futurize tool probably because the line endings are Windows line endings instead of Unix line endings.