Didn’t have time to do UIUCTF this year since it ran concurrently with NDH but I did this challenge to help a team member out who was doing it and it only took 15 minutes. It was a fun challenge called hype, worth 100 points.

Due to the rescheduling of Backdoor 2015 (due to cricket, blegh) I only got about 2 hours to play it. It seemed like a good variety of challenges and I think I would have got 7 or 8 done had it not been on a weekday when I had a tonne of other commitments. Anyway I got started with this challenge, it was easy but fun but only worth 70 points and In my opinion there were a lot of easier challenges worth more points. Still I got stuck down the rabbit hole anyway.

I haven’t ever done a mobile challenge before so I thought I’d give this a try as it was one of the earliest challenges made available on the 0ctf site when it began. The clue was only this:

What a strange CTF this one was. Judging by all the comments on CTFtime a lot of people couldn’t get past the registration page. I myself registered ok, it was in French but Google translate got the message across. When I began the CTF I immediately noticed that this was a challenge for beginners. That’s great I do need to brush up on my basic skills.

After a challenging enough “Warm Up” challenge at BCTF2015 which involved cracking a poorly thought out RSA encryption, the next challenge we decided to tackle was the weak_enc challenge worth only 200 points. I don’t normally do crypto but the warmup challenge really got me in the mood so, here we go!