I've seen recently quite a lot of new threads with coupons for free Udemy courses. I did some small research and even though some of you might find it lame and obvious, I hope this method will help. I also hope that none of you has Udemy as your main income because it could harm you. But since this is Blackhat it's ok imho. Ok, let's get to it.
Every paid course got its free 5 minutes preview. That means plenty of time for us to open up every part of course and download videos, save PDFs etc.
After we click that Free Preview button, we'll get to the course dashboard where the parts are listed. Instead of opening it one by one I'm using Chrome addon which is called "Linkclump" (it's downloadable from Chrome Web Store). With this addon the only thing you need to do is to press and hold the right mouse button and select the area where are the links you want to open. It'll open them in new tabs.
Once we got the links opened, there are two options how to obtain the video (PDF is pretty selfexplanatory, only right click and save as works). I use another Chrome addon called "FVD Downloader" (also on Chrome Web Store). Once the tab with video is fully loaded, you just tap the icon of addon in the right up corner and download the video. Now you need to repeat this step for every tab opened.
The alternative way is to use chrome's web inspector and find out the video link in code. It can be found in Sources, then click on folder embed and there is finally the videourl which is made up of the actual videofile on cloudfront server and special generated key and id for your 5 minute "free session". Good thing is that the file doesn't expire immediately after 5 minutes, so you can download it after the 5 minutes run out (it won't end your download in progress too).
These were only some ways how to get the files from Udemy for free. You can use Firefox with Flashgot, possibly iMacros, someone could make a bot. I'm not sure if you can stop the 5 min countdown (don't know if it's on server or client side), if you have JavaScript knowledge you'll figure it out in a second.
It's a bit complicated (many opened tabs), because Udemy generates new key for every Cloudfront file (e. g. every video part).
Feel free to ask any questions! If you apply your own twist, please share it here.
Thx for your attention.
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