Hitcon CTF 2016 Quals - Writeup Angry Seam

Posted on Mon 10 October 2016 in writeups • Tagged with ctf, writeup, PPC

Web (500 pts)

The first page we can see is a login page. Hanging around a little, we can list a few interesting pages : - The css.seam page take a filename as parameter. - The logout button take a parameter that corresponds to "view:object.method" format. - The report.seam page ...


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Hitcon CTF 2016 Quals - Writeup RegExpert

Posted on Mon 10 October 2016 in writeups • Tagged with ctf, writeup, misc

200 pts

  • Do you remember "hard to say" last year? I think this one is harder to say...

"Simple" channel in appearance, we need to give a regex to match a fixed pattern. We have 5 regex to find. The three main things to take care of are : - Ruby language ...


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Hitcon CTF 2016 Quals - Writeup Beelzemon

Posted on Mon 10 October 2016 in writeups • Tagged with ctf, writeup, PPC

PPC - 150 pts

Beelzemon gives you two integers 1 <= k <= n <= 20. It wants to know if you can split a set `{a | -(2**n) <= a <= (2**n) - 1} into two sets A, B s.t. |A| = |B| and sum({a**k | a in A}) = sum({b**k | b in ...


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Hackover 2016 - Writeup Rollthedice

Posted on Sun 09 October 2016 in writeups • Tagged with ctf, writeup, crypto

Crypto - 15 pts

  • The new cyber casinos are using high speed digital cyber dices to provide the best available gaming experience. Play a brand new dice game at new levels and win. Please note that you have to upgrade to blockchain 3.0 to receive your profits via a smart ...

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Hackit 2016 Quals - Writeup Handmade encryption standard

Posted on Tue 04 October 2016 in writeups • Tagged with ctf, writeup, crypto

Crypto - 250 pts

Times are getting harder and harder for Gen.Tompson. I'm soldier Alderson and some time ago we got this Rijndael cipher: \xa2\xc5\xe7\xcc\xe4\xa9\xb6\x41\x0b\x77\x92\x54\x78\xdb\xed\xab\xe0\x1d\xac\x83\x2e\xe2\x6b\x43\x07 ...


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Hackit 2016 Quals - Writeup 1magePr1son

Posted on Tue 04 October 2016 in writeups • Tagged with ctf, writeup, stegano

Stegano - 150 pts

  • Implementing of the latest encryption system as always brought a set of problems for one of the known FSI services: they have lost the module which is responsible for decoding information. And some information has https://ctf.com.ua/data/attachments/planet_982680d78ab9718f5a335ec05ebc4ea2.png.zipeen already ciphered! Your ...

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Hackit 2016 Quals - Writeup Electronicon

Posted on Tue 04 October 2016 in writeups • Tagged with ctf, writeup, PPC

PPC - 250 pts

  • This task is one of the methods for the psychological attacks. It is intended for people who don't have heart diseases and reached 18 years ;) h4ck1t{flag.upper()}

Here is the text file given with the challenge. We open this file with SublimeText for example, deactivate ...


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