HKCERT CTF 2024 Quals Writeup (IV): The Reverse Challenges

I also wrote some reverse challenges this year: Void, Cyp.ress and Bashed!. We will cover them all in the last part of the blog post.

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HKCERT CTF 2023 Postmortem (III): The Remaining Challenges

We will finally cover the non-crypto challenges that I wrote for HKCERT CTF 2023. This includes one misc (Hackforces), two pwn (ISA Jump Scare & ISA Jogger) and two reverse (The Flag Game & Loot and Scoot) challenges.

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HKCERT CTF 2022 Postmortem (III): The Remaining Challenges

In the last part, I will include the two non-crypto challenges I wrote for HKCERT CTF 2022: Numbers go brrr and Minecraft geoguessr.

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HKCERT CTF 2021 Postmortem (III): The Reverse Challenges

As the third part of the series, three reversing challenges will be included: The Hardest Path, A Junior Mathematician and Let's Chill.

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Union CTF 2021 (I): exah

I was playing Union CTF with @blackb6a last week. Since this CTF is prepared by cr0wn where @Jack and @hyperreality were in (they made CryptoHack), I am convinced that the CTF will be fun. Turns out I wasn't disappointed at all. I will be writing three or four posts on the challenges, and the first of the series covers on exah, the reversing challenge I spent most of my time (yet not solving it).

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