Solving Flare-On 2016 Challenge 1 with Angr

Took me way too long to finally getting around to publishing this post, but here it is. Last fall, FireEye announced their 3rd annual Flare-On challenge. It's sort of a recruiting thing for them, I think -- if you solve all the challenges (and especially if you solve them quickly)…

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PoliCTF 2015 'Am I Cheating?' Reversing Writeup

This challenge was available only via the torrent -- probably because of its large size (close to 4GB). Let's go! Decompress and run Decompressing the challenge's .tar.gz gets you this: > $ file * challdeb.img: QEMU QCOW Image (v2), 6442450944 bytes qemu: directory run_and_solve_me: ELF 64-bit LSB…

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Dakotacon 2015 RE Challenge C2 Writeup

The Dakotacon C2 challenge was moderately difficult in that it actually required you to do a little programming work -- most of the other C-based challenges in this CTF allowed you to set a breakpoint at a smart place (e.g. right before strcmp()), and view the key in-memory. Instead…

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