Who am I

Hello, my name is Siwoo Mun (a.k.a munsiwoo)
I'm security researcher, mainly focus on web application security.
I'm playing CTF as member of CodeRed and Aleph Infinite 🐷

Achievement/Awards

• 2020
  • Finalist, CONFidence CTF 2020 Teaser (team CodeRed)
  • Finalist, Midnight Sun CTF 2020 Quals (team CodeRed)
  • Finalist, 0CTF/TCTF 2020 Quals (team Heart Breaker)
  • Finalist, DEFCON CTF 28 ☠ (team Star-Bugs)


• 2019
  • 1st , HolyShield CTF 2019 Junior (team HeungbuBudaeJjigae) - reward $ 1k
  • 1st , WhiteHat Contest 2019 Junior Final (team Uneducated people) - reward $ 5k
  • 1st , SUA CTF (team BOB8TH_VULN_ANALYSIS)
  • 2nd , The Hacking Championship Junior 2019 (team HeungbuBudaeJjigae)
  • 3rd , Belluminar CTF 2019 (team Aleph Infinite)
  • 5th , ISITDTU CTF Final (team Aleph Infinite)
  • 5th , Timisoara CTF (team Munahnhae)
  • 9th , DEFCON CTF 27 Quals (team CGC)
  • 14th , PlaidCTF 2019 (team CGC)
  • Finalist, DEFCON CTF 27 ☠ (team CGC)
  • Finalist (5th), ISITDTU CTF Final (team Aleph Infinite)
  • Finalist (4th), Codegate CTF 2019 Junior (username munsiwoooooo)
  • Finalist (4th), 2019 DVP Global Blockchain CTF (team HeungbuBudaeJjigae) - reward $ 3k


• 2018
  • 1st , 2018 CyberGuardians (team Layer7) - reward $ 5k
  • 2nd , Timisoara CTF, Romania (team NextLine) - reward $ 300
  • 3rd , Harekaze CTF (team SeoulWesterns)
  • 3rd , 제 1회 KO-WORLD 해킹방어대회 (team phpandrust) - reward $ 1k
  • Finalist (13th), DEFCON CTF 26, Las Vegas ☠ (team C.G.K.S)
  • Finalist (8th), Cyber Conflict Exercise, Jeju (team 야몽클리닉/Red Team)
  • Excellence Prize, 2018 대한민국 육군해킹방어대회 (The Republic of Korea Army Attack and Defense Contest)


• 2017
  • 1st , Christmas CTF 2017 (team 박광호 1인팀) - reward $ 800
  • 3rd , Kookmin Univ & Ubuntu CTF 2017 (team 새싹보끔밥)
  • 4th , Neverland CTF 2017 (team gazoku - solo)
  • 8th , SECUINSIDE CTF Quals 2017 (team FHF)

Bug bounty

• 2020
  • Bugcrowd
    • (2020.08) Atlassian - Jira Service Desk : XSS - reward $600
  • HackerOne
    • Starbucks (starbucks.co.kr) : [censored]
  • Naver Bug Bounty Program
    • found 15+ vulns (XSS)


• 2019
  • HackerOne
    • μtorrent(utorrent.com) : [censored] - external program
    • AfreecaTV(afreecatv.com) : found 13+ vulns including SQL Injection - external program
  • Naver Bug Bounty Program
    • found 8+ vulns (XSS) - reward $ 1.2k
  • GNUBOARD5 (sir.kr)
    • SQL Injection (<=5.4.0.1) - 2019.09.08
    • XSS (<=5.4.0.1) - 2019.09.08
    • Authentication bypass (<=5.4.0.1)
  • DVP Bug Bounty (dvpnet.io)
    • DVP-2019-30029 : Gateio SQL Injection - reward $ 1.2k
    • DVP-2019-30165, DVP-2019-30149 : Gateio XSS (found 2 vulns) - reward 0.250 ETH


• 2018
  • KISA Bug Bounty Program
    • NAVER - SQL Injection (KVE-2018-1301) - reward $ 1k


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

Educated/Internship

• Sunrin Internet High School  
  • Position : Student
  • Date : 2017.03 ~ 2020.02
  • Details : sunrint.hs.kr


• CSSA IoTcube, Korea.Univ    
  • Task : Security Vulnerability Analysis in Block-chain Open Source Project
  • Date : 2018.07 ~ 2018.09
  • Details : CSSA, IoTcube


• Best of the Best 8th, KITRI  
  • Position : Mentee
  • Date : 2019.07 ~ 2020.04
  • Details : KITRI, BoB

Speaker

• HackingCamp 18, PoC Security    
  • Title : Security option bypass 101
  • Content : PHP의 open_basedir, disable_functions 옵션을 우회하는 여러 방법에 대해 소개
  • Date : 2018.09.02
  • Detail : 해킹캠프 홈페이지

• 빗썸 청소년 사이버 보안 캠프, Bithumb    
  • Title : 쉽고 간단하게 배워보는 정보보안 Tip
  • Content : 개인정보가 유출될 수 있는 여러 상황을 예를들며 이를 사전에 예방하는 방법을 소개
  • Date : 2018.11.23
  • Detail : 인터넷 기사, 빗썸 홈페이지

• CodeGate 2019 (First prize was awarded)    
  • Title : PHP Trick Trip
  • Content : PHP의 여러 이슈와 취약점으로 연계할 수 있는 버그에 대해 다루며,
     Zend 엔진 소스 분석을 통해 버그가 발생하는 이유와 이를 분석했던 과정을 소개
  • Date : 2019.03.27
  • Detail : 후기, 코드게이트 홈페이지, 발표자료(pdf)
  • Award : 한국인터넷진흥원장상 (발표 최우수상)

Organizer

• 2019
  • 2019 Belluminar CTF 문제 출제
  • 2019 Christmas CTF (사이트 개발, 문제 출제, 운영) - @munsiwoo/christmas-ctf-platform
  • 2019 Layer7 CTF (사이트 개발, 운영)
  • 2019 선린인터넷고등학교 고등해커 (예선/본선 운영, 사이트 개발, 문제 출제)
  • 2019 선린인터넷고등학교 교내해킹방어대회 (문제 출제- Github)


• 2018
  • 2018 선린인터넷고등학교 고등해커 (예선/본선 운영, 사이트 구현, 문제 출제)
  • 2018 선린인터넷고등학교 교내해킹방어대회 (운영, 문제 출제)
  • PoC Security HackingCamp18 CTF (문제 출제 - Github)
  • 2018 Layer7 CTF (대회 운영, 문제 출제, Github)
  • 2018 H3X0R CTF (문제 출제 - Github)


• 2017
  • 2017 PoC Security Belluminar CTF (대회 참가, 문제 출제, Github)
  • 2017 PoC Security Power of XX (문제 출제, Github)
  • 2017 Layer7 CTF (대회 운영, 문제 출제, Github)
  • 2017 H3X0R CTF (대회 운영, 문제 출제)

Projects

• 2019
  • CTF Platform - GitHub
  • Automatic Analysis for Node.js Modules (BoB Project)
  • PHP Trick Trip (Presented at the codegate 2019, GitHub)
  • Nully fuzzer - Dynamic reflected xss fuzzer


• 2018
  • PHP CTF Framework (used in Layer7 CTF 2018, Sunrin High School Hacker CTF 2018)
  • Simple MVC Framework in PHP (GitHub)
  • Simple directory search tools with multi-threading (GitHub)