This is interesting (these are solutions for the challenges on the site):
This looks like a nice variety of challenges! I've always found constructing ROP chains extremely satisfying, even more than regular exploit development.
As a plug, I wrote a blog post solving a similar exercise using a ROP chain: http://www.kvakil.me/posts/ropchain/ . It looks pretty similar to the pivot challenge here.
This is why Internet is great ! Thanks for sharing such advanced concept tutorial for free.
Who made this?
Are there leaderboards or profiles?
I am pretty sure this is quite an unpopular opinion, but I think that the biggest issue we have in computer security is culture.
Information security breaches are not victimless crimes. The ubiquity of massive security failures shows that they are not rare occurrences. I believe that this symptomizes a failure of our culture, related to an inability to integrate information technology into the proper context within our society.
Sure, we need to be aware of exploit patterns so that we can make structural improvements, but we don't need to become jolly experts in them. We should stop glorifying cyber-criminals.