A unique trick to searching Exploit Kits on Google is to use the following query: “* exploit kit.zip”.

This searches for all websites with the content of (any characters) exploit kit.zip, not case sensitive. This search provides the best results. For a more specific, yet less knowledgeable result, replace the star (*) with the name of the exploit kit you wish to download. For example: “Crimeware exploit kit.zip”.

Keep hunting,
~!Donovan