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Challenge 1 ("frog")
Description Welcome to Flare-On 11! Download this 7zip package, unzip it with the password 'flare', and read the README.txt file for launching instructions. It is written in PyGame so it may be runnable under many architectures, but also includes a pyinstalle...
Challenge 2 ("checksum")
Description We recently came across a silly executable that appears benign. It just asks us to do some math... From the strings found in the sample, we suspect there [is] more to the sample than what we are seeing. Please investigate and let us know what you ...
Challenge 3 ("aray")
Description And now for something completely different. I'm pretty sure you know how to write Yara rules, but can you reverse them? Writeup The third challenge, "aray", was a favourite of mine. Everything about this challenge was enjoyable — the idea, the pr...
Challenge 4 ("Meme Maker 3000")
Description You've made it very far, I'm proud of you even if no[ ]one else is. You've earned yourself a break with some nice HTML and JavaScript before we get into challenges that may require you to be very good at computers. Writeup Wow, thanks for those k...
Challenge 5 ("sshd")
Description Our server in the FLARE Intergalactic HQ has crashed! Now criminals are trying to sell me my own data!!! Do your part, random internet hacker, to help FLARE out and tell us what data they stole! We used the best forensic preservation technique of ...
Challenge 7 ("fullspeed")
Description Has this all been far too easy? Where's the math? Where's the science? Where's the, I don't know.... cryptography? Well we don't know about any of that, but here is a little .NET binary to chew on while you discuss career changes with your life co...
Introduction
What is Flare-On? From the official website: The Flare-On Challenge is the FLARE team's annual Capture-the-Flag (CTF) contest. It is a single-player series of Reverse Engineering puzzles that runs for 6 weeks every fall. Notably, it is the reverse engineerin...
Challenge 6 ("bloke2")
Description You’ve been so helpful lately, and that was very good work you did. Yes, I’m going to put it right here, on the refrigerator, very good job indeed. You’re the perfect person to help me with another issue that came up. One of our lab researchers ha...
Challenge 8 ("clearlyfake")
Description I am also considering a career change myself but this beautifully broken JavaScript was injected on my WordPress site I use to sell my hand-made artisanal macaroni necklaces, not sure what’s going on but there’s something about it being a Clear Fa...