Install the Code Signing Certificate

Windows does not permit loading drivers signed with untrusted certificates, so we need to both import our untrusted certificate and enable test signing. From the HackSysExtremeVulnerableDriver\Driver directory, run the following to enable test signing and reboot (which is required after enabling test signing):

certutil -importPFX HEVD\Windows\HEVD.pfx
bcdedit -set TESTSIGNING on
bcdedit -set loadoptions DISABLE_INTEGRITY_CHECKS
shutdown /r /f /t 0

Once the Virtual Machine reboots, you can reconnect with ssh -p 2222 user@localhost.