Google Ad Placement Locator

I need a software designed to do several things. 1.) Enter a list of keyword phrases. 2.) Choose the number of Google search results pages to scan and download search result URLs of each of those pages. 3.) Then scan each page of the result URLs for Google Ad code. 4.) Return a list of only URLs with Google Ads on them. 5.) Repeat the whole process for each phrase entered until done. The software should be cross platform. Mac and PC.