What you need: Mozilla Firefox and Sothink Swf Downloader.
Step 1. First download Sothink Swf Downloader (it's free!).
Step 2. Open Firefox (easy enough!).
Step 3. Go to the game you want to find the link for, in this example I will be using Warfare 1944 on Armor Games.
Step 4. Press Alt+O or go to Tools>Sothink Swf Downloader to open it.
Step 5. As you can see there are a lot of results, but what you do is look for the websites primary domain and also keywords in the swfs which relate to the game ( note: the highlighted swf in the photo is the correct one).
Step 6. Now that we've narrowed it down a little right click the result and select Open in New Window.
Step 7. In the address bar and in the downloader, you have your link!
I made this tutorial because for some newbies if they have that swf link, there should only be one swf result on that page! And that should make hacking a lot easier for us and for others. This can also be done with Live Http Headers, but I will make a tutorial for that later. Hope you enjoyed this and I will also make a video tutorial for this later as well!