@echo off
setlocal
if exist "C:\Program Files (x86)\Evernote\Skitch" (
    for /R "C:\Program Files (x86)\Evernote\Skitch" %%X in (*.exe) do (
        echo Blocking: %%~nX
        netsh advfirewall firewall add rule name="%%~nX Skitch - block" dir=out program="%%X" action=block
        netsh advfirewall firewall add rule name="%%~nX Skitch - block" dir=in program="%%X" action=block
    )
)

endlocal
pause