About

Hello World...

I'm Ryo Soikutsu, a cybersecurity student in Singapore

I have interest in red-team and blue-team cybersecurity activities. As well as teaching others about cybersecurity

I enjoy participating in, and organizing capture-the-flag (CTFs) competitions.
I am part of a CTF team, Yes But No. I also help to organize CTFs and workshops for my school's cybersecurity club.

I have my own blog, where I publish CTF challenge writeups and challenge creation tutorials to share my experience. You can check out my blog here.
I enjoy using Linux, and I have a daily driver laptop using Arch Linux. My dotfiles can be found here

Currently Im a student at a polytechnic in Singapore. I am also part of the WorldSkills Singapore programme, representing the Cyber Security trade.

Aside from studies, I enjoy playing video games, particularly technical Minecraft modpacks and space MMOs.

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Experience

Competitor @ WorldSkills Competition

Aug 2024 - Present

Representing Team Singapore on the global stage for the Cyber Security trade, covering topics such as penetration testing, network and systems administration, digital forensics and incident response

Core Technologies
l Bash
l PowerShell
l Python
l PHP
Vice-President @ NYP InfoSec Club (Special Interest Group)

Dec 2024 - Present

Leading the planning, coordinating and execution of cybersecurity workshops and events, and collaboration in events with external partners and organizations

Events

Bi-annual CTFs

Workshops

External events and workshops

Core Team Member / Challenge Creator @ Yes But No (Student Group)

January 2022 - Present

Organizing and participating in Capture-The-Flag (CTF) competitions, challenge creation and vetting for CTFs. Volunteering and representing YBN in cybersecurity events and workshops.

Projects

Capture-The-Flag Challenges

Tech Stack

Usually the tools I use for the job, depend on the job. There's no one-size fits all, and as such I'm always trying out new technologies, and constantly learning.

The following tools are the ones I'm most familiar with, and I've linked the original resource for each tool.

Red Team

l Metasploit
l Nmap
l Gobuster/Ffuf
l Burp Suite
l PowerShell Empire
l Mimikatz
l BloodHound

Blue Team

l Chainsaw
l Eric Zimmerman's Tools
l FTK Imager
l Autopsy

SIEM

l Splunk
l Wazuh

Development

l Bash
l Python
l PHP
l JavaScript
l Docker
l C
l PowerShell

Operating Systems

l Arch Linux (Daily Driver)
l Windows Server 2019/2022
l Windows 10/11
l CentOS
l Ubuntu Server
l Ubuntu Desktop
l Kali Linux
l REMnux
l FLARE-VM

Others

l Wireshark
l HxD
l CyberChef
l Tmux
l VMware Workstation
l VirtualBox

Resume

Download Resume