Most of this is taken from here. It also has more in-depth info.
###Download ISO###
###Install OS###
During the install create user vagrant with password vagrant
###Initial WinRM Setup###
Winrm QuickConfig
###Set WinRM to Automatic###
WinRM will respond much faster if it's set to Automatic start instead of Automatic (Delayed) start. Not sure if any adverse effects.
###Configure WinRM###
From an elevated command prompt:
winrm set winrm/config/client/auth @{Basic="true"}
winrm set winrm/config/service/auth @{Basic="true"}
winrm set winrm/config/service @{AllowUnencrypted="true"}
###Enable CredSSP Authentication###
From a powershell prompt:
Enable-WSManCredSSP -Force -Role Server
###Change Powershell Execution Policy### Set-ExecutionPolicy -ExecutionPolicy Unrestricted
###Remove Extra Packages###
Get the powershell script from here. Run it on the machine.
###Export the VM###
Export the VM from within HyperV, delete the snapshots folder, add a metadata.json file containing:
{ "provider": "hyperv" }
Tar the Virtual Hard Disks, Virtual Machines, and metadata.json file into an tarball. Rename the extension to .box.
###Import to Vagrant###
Change directory to where you have the .box file
vagrant box add nameofbox yourfile.box
###Call it from a vagrantfile###
config.vm.box = "nameofbox"