Tag Archives: wtf

Late Writeup – Opabina 4 (Google)

During the Google CTF, I did not finish the Opabina 4 challenge due to time constraints (my fault – I thought it finished at 1am local time and played videogames instead). Afterwards, I found the server was still up, so … Continue reading

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Writeup – Opabina 1,2,3 (Google)

Late on Sunday night, I attempted the Opabina series of challenges in Google’s CTF. These challenges relied on the Protocol Buffers stack. Long story short, a Protocol Buffer is a language-independent definition of a given data structure (which can be reasonably … Continue reading

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Writeup – For2 (Google)

This weekend, I participated in the Google CTF. This CTF was a lot of fun, forcing participants to learn lots of Google-specific technologies, providing a wide range of challenging content for people. One particularly interesting challenge was For2: the challenge … Continue reading

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Writeup – Obfuscation (sCTF)

sCTF is now concluded, and I had a fantastic time competing in this challenge with my team. This CTF presented a broad range of challenges, ranging from simple reverse engineering challenges to more difficult and obscure challenges (such as decoding … Continue reading

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