かしわば(@kash1064)

かしわば(@kash1064)

Aspiring Reverse Engineer and CTF Player (Team: 0nePadding). Passionate about WinDbg and Anti-Virus internals. OSCP / CISSP. Working at Microsoft Japan, but all views expressed are my own.

© 2026 かえるのひみつきち

OSINT (en)

CTF (en)

n00bz CTF 2024 Writeup

n00bz CTF 2024 Writeup — 28th place, multi-category

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CTF (en)

TsukuCTF 2023 Writeup

TsukuCTF 2023 Writeup — NES RE + 19 OSINT challenges

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CTF (en)

AmateursCTF 2023 Writeup

This is a writeup for AmateursCTF 2023.

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CTF (en)

Hero CTF 2023 Writeup

Hero CTF 2023 Writeup

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CTF (en)

OSINT CTF: xINT CTF 2022 Writeup (AVTOKYO 2022)

Writeup for xINT CTF 2022

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CTF (en)

TsukuCTF 2022 Writeup

TsukuCTF 2022 Writeup

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CTF (en)

[OSINT CTF] xINT CTF 2021 Writeup (AVTOKYO 2021)

A writeup covering the interesting problems and the ones I learned the most from at xINT CTF 2021.

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