Yes, sadly, there is no quick fix.
Below are a few of the steps I recommend in recovering from a compromised site situation.
- Convince your host to recover to an older version with the hacks.
- Or, contact an expert to clean your site of malicious code.
- Once recovered make sure all is updated to latest versions.
- Change all web site related passwords.
- Install security plugins, and research methods to better secure your site.
- Contact Google once all is clear and submit a "request for review" if needed.
- Contact Google and see the "Fetch as Google" option within your Google Webmaster.