Some hints please  Gehe zur Warchall: Live RCE Challenge

As someone already beat this challenge I want to ask for a little hint.

Are we supposed to use an existing PHP class that will wakeup and use it to read solution.php or we have to treat it as a bufferoverflow zero day exploit of unserialize?

I want to know where to focus my research.

Thank you!

Now I don't ask for hints. I want to say that there might be something wrong with the challenge, challenge.php and solution.php are missing. Only phpinfo.php is present.

Thank you!

As I understand it the challenge is not yet ready. But who knows?

Nevermind. After some more research I managed to solve it. I don't know if I did what I was supposed to do, but even if didn't I just learned a lot more compared to what I knew yesterday.

Challenge totally changed and was re-released: forum-t549/New_Challenges-p3.html#post5159

Congratulations, however ;)

EDIT: The old version had no known solution. All people solved the re-release which is unrelated but fun too!
EDIT2: Sorry for the confusion and low communication in the forums.

is this chall good working now??

thank u..

Challenge has been working well for a couple of months now. No more excuses for not solving it... ;)

Has somebody recently checked that this is still working? I just checked the server signagure, and it does not seem to be vulnerable.

It was indeed broken. It should be fixed now.

Wow, that was quick

Thanks!