Hacked, no access to all of my wp-admin

Hello everyone, my websites have been hacked by leaving numerous zips and blocking access to all of my wp-admin login area.

I am wondering if there is chance I can have some help, one of the sites wont even load unless i ensure the www. prefix is typed first.

The malware was sending my sites mobile users to install an app on iOS and Android.

It was leaving .zips and new php files and zips like tkovers.zip

Many thanks!