s4u is a demonstration program using the S4U extension in msv1_.0.
It allows the creation of a cmd.exe with the context of any user without requiring the password.
Create a cmd.exe with a local user security context:
s4u.exe .\user
Create a cmd.exe with a domain user security context:
s4u.exe DOMAIN\user
Create a cmd.exe with and add specific SID:
s4u.exe .\user S-1-5-18