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Under the name Himitsukichi CTF, I decided to create CTF challenges to recreate and verify techniques that I personally found interesting.
I have not decided how often I will make new challenges, but I will post the ones I create here.
The main categories will probably be Rev, Pwn, and Forensic.
The flag format is HimitsukichiCTF{XXXX}, but please note that I have not prepared a submission page.
Table of Contents
Forensic
Oblivious
Hello expert. My PC sent @yuki_kashiwaba’s twitter icon for C&C server. But I couldn’t find any suspicious point. Could you investigate this?
Format: HimitsukichiCTF{XXXX} File: flag.png
The writeup for this challenge is here.