![]() String (of uppercase chars and digits) by bruteįorce. This equationĬan be solved easily and quickly e.g. The only issue is to beat a not so hard captcha. ![]() So the first task is signing up and logging in. The url from the source resolved the issue.) (The sign up link didn't work for me, but getting Opening the challenge (which unfortunately is not available now,Īfter the competition) gives a login page and a sign up Is quite interesting, keep reading further. To execute arbitrary code on the target (the used technique * bypassing `open_basedir` and `disable_functions` PHP restrictions * PHP7 file OPcache attack (execute arbitrary PHP code) To get some flavor about the complexity of the challenge, The solution was a painful, hard workīy a couple of members from the RingZer0Team: Involved, multistep web challenge, so big thx for the ![]() > But I'm sure the teacher is too busy to check your homework.įirst of all, this is a great, not so easy (maybe hard? ) ), ![]() **Points:** 400 (decreased to 340 by the solves) ![]()
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