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  • Published on
    I was delighted to play in the WestLake CTF this year alongside my younger schoolmates and to see their high level of skill despite being only sophomores. Kudos to the younger generation, their future is certainly promising!
  • Published on
    Another writeup for the ReadWorld 2023 CTF. Here are the baby-level and normal-level challenges, but they are actually not easy at all.
  • Published on
    idek2022 has provided several challenges with good quality. The `sprintf` challenge is a 'wired' format string challenge in which I have summarized 3 different impressive approaches. Check them out!
  • Published on
    In this blog, I am going to explain the important concepts of Heap and use the `ptmalloc` in the Glibc 2.31 library as an example. The heap is a beautiful mess :)
  • Published on
    This is the writeup for the snykCTF 2022 which provided so many interesting web challenges. I take it as an opportunity to learn more about various web security topics which is why I spend time going through all the challenges again. I hope you find this writeup informative and enjoyable!