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Delusions Grandeur (Delusions of Grandeur)
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CyberStakes Live 2016 - wallpaper-collection
This problem presented you with a .jar file and the prompt "I lost the serial key to my favorite wallpaper collection. I tried to reverse engineer it but this java code looks off. Could you use jd to take a look at the jar? I need the key for the 'hacker' u...
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CSAW 2015 Reversing 200 - Hacking Time
Description: We're getting a transmission from someone in the past, find out what he wants. First, I opened up this cool NES game in FCEUX, an NES emulator. It had some funny stuff like, "overflowing the buffer" by pressing (A). Then it wanted a password to...
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CSAW 2015: Crypto 100: Notesy
The most difficult part about this problem is trying to identify what was actually wanted. Initially there was no instructions on the question, and only the words "Give me like a note dude" on the website. After having a slight internal debate about giving ...
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CSAW 2015 Forensics 100 - Transfer
CSAW 2015 Forensics 100 - Transfer Description: I was sniffing some web traffic for a while, I think i finally got something interesting. Help me find flag through all these packets. net_756d631588cb0a400cc16d1848a5f0fb.pcap First we opened up this pcap in ...
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CSAW 2015: Forensics 200: Airport
I enjoyed this challenge, mostly cause I got to look at airplanes, but for this problem we were given 5 images. 4 of them were png images of airports, and 1 was a jpg of the logo for steghide. After a little bit of research I found that steghide was a steno...
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CSAW 2015: Recon: Julian Cohen
This problem amused me greatly due to the lack of guidance that was given about it. As a result of this I immediately looked for the most obvious way to find him. From last year I knew that Julian Cohen's username in most places is HockeyInJune, and decided...
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Web 200: Lawn Care Simulator
For this website I got reasonably excited about watching some grass grow, however after hearing that someone actually watched it grow all the way to the top and didn't actually win anything I gave up rapidly. After looking a little bit more at the source I ...
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Finding system in libc on ASLR program with memory leak
Sometimes you are able to exploit a binary, but it has ASLR and you don't know where to find system. With a memory leak (that you can do more than once), it is possible to figure this out using the GOT/PLT entries that the ELF linker uses without having a p...
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Recon 100 (1st one)
The problem asked us to find a picture of Kevin Chung from before his high school days. A simple Google search gave us his
linked in profile, which had his high school on it. I decided to check
out the school's site and ended up finding some old pictures ...
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Recon 100
The problem asked us to find a picture of Kevin Chung from before his high school days. A simple Google search gave us his
linked in profile, which had his high school on it. I decided to check
out the school's site and ended up finding some old pictures ...
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