Bug Bounties

• –ing
  • 
    • Sovryn: Critical severity rewarded $22,410 USD
          - Summary: SSRF to XSS (potentially exploitable to trigger browser wallet interactions)
    • BlockPI Network: Critical severity rewarded $15,000 USD + bonus
          - Summary: SQL Injection leading to full database access
    • Polymarket: Critical severity rewarded $6,000 USD ($5,000 + $1,000)
          - Summary: SQL Injection leading to full database access
    • Unlockd: High severity rewarded $5,000 USD
    • Xterio Games: High severity rewarded $2,000 USD
    • Forta Network: Low severity rewarded $1,000 USD
    • AscendEX: Low severity rewarded $700 USD
    • DeGate: Low severity rewarded $500 USD
  
  The vulnerabilities reported above are all Web2 vulnerabilities. (SQL Injection, SSRF, XSS)
  I comply with Immunefi's Responsible Publication Policy.
  
  
  • Naver Bug Bounty Program: XSS
        - Summary: Insufficient origin validation in postMessage handling led to a XSS - $200 USD
  
  


• 2021
  • HackerOne
    • Starbucks Arbitrary File Read: Critical severity rewarded $6,000 USD (max bounty)
          - Summary: Arbitrary file read vulnerability that allows the theft of Starbucks Korea's PG private key, database credentials and webapp source code.
    • Starbucks Multiple XSS: Medium severity rewarded $4,770 USD (total)
  • Bugcamp
    • CISSP Reflected XSS: rewarded $120 USD - Related to the following GNUBOARD5 XSS
  • GNUBOARD5
    • Reflected XSS (<=5.4.13.1) - 2021.06.24 (commit log, write up)


• 2020
  • Bugcrowd
    • Atlassian Jira Service Desk XSS: rewarded $600 USD
    • Bitdefender XSS: rewarded $300 USD
  • HackerOne
    • Starbucks: rewarded $1,500 USD
    • Steam(store.steampowered.com) Stored XSS: rewarded $400 USD
  • Naver Bug Bounty Program
    • found 15+ vulns - total rewarded $2,000 USD


• 2019
  • HackerOne
    • μtorrent: Reflected XSS
    • afreecaTV: found 13+ vulns including SQL Injection
  • Naver Bug Bounty Program
    • found 8+ vulns: total rewarded $1,200 USD
  • GNUBOARD5
    • SQL Injection (<=5.4.0.1) - 2019.09.08
    • XSS (<=5.4.0.1) - 2019.09.08
    • Authentication bypass (<=5.4.0.1) - 2019.09.08
  • DVP Bug Bounty
    • Gate.io: SQL Injection (DVP-2019-30029) - rewarded 4.5 ETH
    • Gate.io: DOM-based XSS (DVP-2019-30165, DVP-2019-30149) - rewarded 0.250 ETH


• 2018
  • KISA Bug Bounty Program
    • NAVER: SQL Injection(KVE-2018-1301) - rewarded $1,000 USD


• 2017
  • NAVER PER(Privacy Enhancement Reward)
    • found 25+ vulns (XSS, Open Redirect)

Work Experience

• SAMSUNG SDS, 통합보안센터(Samsung Security Center)  
  • Position: Security Researcher
  • Date: Jan, 2024 – Present
  • Task: Penetration Testing, Vulnerability Research on Samsung Products


• RAON Whitehat, 핵심연구팀(Core Research Team)  
  • Position: Security Researcher
  • Date: Sep, 2021 – Dec, 2023 (2 year 3 months)
  • Task: Penetration Testing, Vulnerability Research


• Best of the Best 8th, KITRI  
  • Position: Mentee, 취약점분석트랙(Vulnerability Analysis Track)
  • Date: Jul, 2019 – Apr, 2020 (9 months)
  • Detail: KITRI, BoB

Speakers

• CODEGATE 2019(Junior Best Presentation Award)    
  • Title: PHP Trick Trip
  • Content: PHP의 여러 보안 이슈와 취약점을 통해 웹 해킹 공격으로 이어질 수 있는 버그에 대해 다루며,
     Zend 엔진을 분석해본 경험을 토대로 버그가 발생하는 논리적 이유와 이를 분석했던 과정을 소개하는 발표
  • Content(eng): This presentation covers various security issues and vulnerabilities in PHP that can lead to web hacking techniques,
    and based on my experience analyzing the Zend Engine, it discusses the logical reasons for bugs and the process of analyzing them.
  • Date: Mar 27, 2019
  • Detail: CODEGATE Official Website, Presentation (pdf)
  • Award: 한국인터넷진흥원장상

• 빗썸 청소년 사이버 보안 캠프, Bithumb    
  • Title: 쉽고 간단하게 배워보는 정보보안 Tip
  • Content: 개인정보가 유출될 수 있는 여러 상황을 예를 들며 이를 사전에 예방하는 방법을 소개
  • Date: Nov 23, 2018
  • Detail: Articles, Bithumb Official Website

• HackingCamp 18, PoC Security    
  • Title: Security option bypass 101
  • Content: PHP의 보안 옵션(open_basedir, disable_functions)을 우회할 수 있는 여러 방법에 대해 소개
  • Date: Sep 02, 2018
  • Detail: HackingCamp Official Website

Publications

• 2019
  • Automatic Analysis for Node.js Modules, (Best of the best 8th / NerdJS)
    • Title: DAPP: automatic detection and analysis of prototype pollution vulnerability in Node.js modules
      Journal: Springer, International Journal of Information Security (SCIE)
    • https://link.springer.com/article/10.1007/s10207-020-00537-0
      
  • Node.js 취약점 분석 방법론에 대한 연구, (Best of the best 8th / NerdJS)
    • Title: Node.js 취약점 분석 방법론에 대한 연구
      Journal: 2019년 추계학술발표대회
    • https://www.koreascience.kr/article/CFKO201924664107724.pdf