Monthly Archives April 2015

Did not have a lot of time this weekend for Dragon Sector's CONFidence CTF but I did quickly do this reversing challenge. It was the most solved challenge so low hanging fruit and all that. The challenge consisted of a single file download: root@mankrik:~/dragon/easy# file re_100_final re_100_final: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared…

It's my lucky day, two RSA challenges back to back and this one is worth some nice points. Strength Crypto (110 pts) Strength in Difference We've captured the flag encrypted several times... do you think you can recover it? Along with this clue we had a file containing again a list of long numbers with a header listing them as…

A 70 point crytpo challenge with the the following clue: Curious Crypto (70 pts) The curious case of the random e. We've captured the flag encrypted several times... do you think you can recover it? A very quick challenge for me. We are only presented with a clue that the flag had been captured encrypted several times. The included file…

I felt like going back and writing up this warmup challenge from BCTF since I enjoyed it so much. I have just recently finished studying RSA at university so it was still fresh in my mind when starting this challenge. This was the first challenge published when BCTF launched and it was only worth 50 points. So how hard could…

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. With the challenge was a link to a website: http://a050032a39d870de1be70314b90d0917.tk/ and a link to a Youtube…

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