New WordPress blog using old DB backup

Hi,
I had wordpress blog hosted somewhere. The hosting server got hacked, so they removed my website and sent me website and db backup files. Since website is contaminated and hacker has removed index file, I cannot use my website backup to restore a new one. Somehow I managed to restore my DB backup. Now I am trying to build new website using the database backup I have. Please guide me on achieving this.

Thank You
Sanjivani