User-agent: Googlebot-Image
Disallow: /

User-agent: NextGenSearchBot
Disallow: /

User-agent: *
Disallow: /wp-admin/
Disallow: /wp-content/
Disallow: /wp-images/
Disallow: /wp-includes/
Disallow: /images/
Disallow: /wp-login.php
Disallow: /*?