a$)$ Figure out how to dump the password hashes off of the vulnerable Server using a METERPRETR COMMAND. You should not use the post$/$windows$/$gather$/$hashdump Metasploit module as it will give you results from the SAM file, where we are looking for the NTDS$.$dit. Use a native Meterpreter command instead use.

b$)$ Figure out how to get System level access again by removing your token $$ there is a Meterpreter command that you can run that will put your Meterpreter session back in the context of the System account from a standard user account. This command is NOT getsystem.