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Introduce Me & Link

Hello, I am web2 Hacker.
I majored in Information Security at 
Daedeok Software Meister High School.

I entered the IT field in 2022 and began actively 
engaging in hacking and security-related activities 
starting in 2023.

My main area of focus is Web2, and I am also expanding 
my knowledge in offensive, networks, cloud computing, and blockchain.

I am currently working as a penetration testing consultant at Theori.

Link & Contact

github : https://github.com/one3147

blog : https://one3147.tistory.com/

Linked-in : https://www.linkedin.com/in/원준-도-04193b270/

Discord : one3147

Email : [email protected]

Business Mail : [email protected]

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Projects

• (2022.12) PHP Server Develop & Hacking
  • Personal project
  • PHP Board + Self-Pentesting
• (2023.04 ~ 2024.07) SecureMarshmallow
  • Team project
  • Backend API Server Develop(Spring, Django)
  • Pentest & Secure Coding
• (2023.10 ~ 2023.11) WhiteHatSchool BMW
  • Team project
  • Web3 Smart Contract WarGame Project
  • Platform production and distribution
  • Wargame writing
  • web3 & Solidity Study
  • 1-day case Research
  • Blog Posting
  • Best Project in WhiteHatSchool 1st
• (2024.02) Theori Recruitment CTF analysis
  • Personal project
• (2024.03 ~ 2024.06) MS-Judge
  • Team project
  • Algorithm judgment site Develop (Django Backend)
• (2024.03 ~ 2024.07) SCS
  • Socket Chat Service with End to End Encryption
  • Personal project
• (2025.02) Automated Network Service Scanning and Penetration Analysis with AI
  • Personal project, in Theori </aside>

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Activity

Activity & Educations

• (2023.10 ~ 2024.02) Stealien Security Researching Projects
  • Deep Understanding for CTF
  • web hacking techniques research
• (2023.06 ~ 2023.12) Konyang University CyberSecurity Education
• (2023.09 ~ 2024.02) KITRI BOB - WhiteHat School 1st Period
• (2024.04.06) H4C Conference Hacking Owls 6th - PHP Tricks and RCE Technique in CTF
• (2024.11 ~ 2025.2) Dreamhack 1st in Web sector
• webhacking.kr challenge All solved
  • korea webhacking wargame platform
• HafWorld challenge All solved
  • whitehat school 2nd, webhacking wargame platform
• (2025.3 ~ ) REWRITE : Deep Understanding for Web Hacking
  • CTF-upsolve
  • Research F/U
  • Web Attack Technique Advancement
  • 0-day & 1-day vulns research
  • making CTF challenge

Bug Bounty & CVE

• Real-World Bug-Bounty (Domestic / Overseas)
  • 6 or more cases </aside>

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CTF & Contest

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2023

• 2023 JBU CTF Department Chair's Award
• 2023 Local Skills Competition - Cyber Security 1st
• 2023 Information Security Competition Final 3rd
• 2023 ELECCON CTF Final
• 2023 CCE Final
• 2023 CodeGate Final
• 2023 X-MAS CTF Challenge Writing
• 2023 School Algorithm Contest 3rd </aside>

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2024

• 2024 HCTF 1st
• 2024 WhiteHatContest 3rd
• 2024 CCE 3rd
• 2024 KOSPO CTF Excellence Award
• 2024 LOGCON Special Award
• 2024 CodeGate Final
• 2024 DEFCON Final </aside>

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2025

• 2025 LINE CTF 1st (Team : TheDuck)
• 2025 Lake CTF Final (Team : otnws)
• 2025 Null GoA CTF Final (Team : otnws)
• 2025 Midnight Flag CTF Final (Team : otnws)
• 2025 BlackHat MEA CTF Final (Team : Eclipse Five)
• 2025 DotHack Invitational Challenge Writing (web)
• 2025 ASCS Preliminaries Challenge Writing (web)
• 2025 ACS Preliminaries Challenge Writing (web) </aside>

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