Here are the filters I've tried so far:

[code]||go.oclasrv.com
||onclickads.net/apu.php
[/code]
These block ad code but it's not enough:
[code]||go.wsockd.com[/code]
This is called via websockets which for ABP on Chrome is not blocked.
eg. ws://go.wsockd.com/?id=10802

The code ends up opening a popup with a dodgy looking domain:
[code]||vprmnwbskk.com^$popup[/code]
This finally blocked it.

Example site: http://putlocker.is/watch-exodus-gods-and-kings-online-free-putlocker.html

Click on play button and popup occurs.