win10.json

{
    "builders": [{
        "type": "virtualbox-iso",
        "iso_url": "{{user `iso_url`}}",
        "iso_checksum_type": "{{user `iso_checksum_type`}}",
        "iso_checksum": "{{user `iso_checksum`}}",
        "headless": false,
        "communicator": "winrm",
        "winrm_username": "hacker",
        "winrm_password": "hacker",
        "winrm_timeout": "1h",
        "shutdown_command": "shutdown /s /t 10 /f /d p:4:1 /c \"Packer Shutdown\"",
        "guest_os_type": "Windows10_64",
        "disk_size": 61440,
        "vm_name": "pentest-win10",
        "guest_additions_mode": "attach",
        "floppy_files": [
            "{{user `autounattend`}}",
            "scripts/winrm.ps1",
            "scripts/install.ps1",
            "scripts/finish.ps1"
        ],
        "vboxmanage": [
            [
                "modifyvm", "{{.Name}}", "--memory", "4096", "--vram", "128", "--cpus", "2"
            ],
            [
                "modifyvm", "{{.Name}}", "--natpf1", "guestwinrm,tcp,127.0.0.1,5985,,5985"
            ],
            [
                "modifyvm", "{{.Name}}", "--clipboard", "bidirectional"
            ],
            [
                "modifyvm", "{{.Name}}", "--usb", "on", "--usbehci", "on"
            ],
            [
                "storageattach", "{{.Name}}", "--storagectl", "IDE Controller", "--port", "1", "--device", "1", "--type", "dvddrive", "--medium", "emptydrive"
            ],
            [
                "sharedfolder", "add", "{{.Name}}", "--name", "pentest", "--hostpath", "c:\\pentest", "--automount"
            ]
        ]
    }],
    "provisioners": [{
            "type": "file",
            "source": "scripts/finish.ps1",
            "destination": "c:\\install\\finish.ps1"
        },
        {
            "type": "powershell",
            "elevated_user": "hacker",
            "elevated_password": "hacker",
            "scripts": [
                "scripts/vbox_guest_additions.ps1"
            ]
        }
    ],
    "variables": {
        "iso_url": "./windows_10_20201022.iso",
        "iso_checksum_type": "md5",
        "iso_checksum": "01b31193f18a67e1274319382d49120b",
        "autounattend": "./answer_files/10/Autounattend.xml"
    }
}