About me

Hi! Welcome to my blog! I’m Rainier Wu, also known as teddy or TheSavageTeddy, a highschool first year uni student and CTF player from Australia.

I am the Vice Captain of the team Emu Exploit (formerly PissedEmu), and do all categories but mostly web3/blockchain, crypto, and pwn.

I also occasionally play with 🤬🇫🇷🛹🐻 and Friendly Maltese Citizens.

This is my blog where I will post some CTF writeups and other interesting cyber related content! Enjoy!

Some CTFs I played:

  • DEFCON CTF 32 (2024) Finalist
  • CODEGATE 2025 General Finalist
  • CODEGATE 2024 Junior Finalist
  • PwnMe CTF 2025 Finalist
  • p4CTF 2023 Finalist
  • BSides Canberra CTF 2024 2rd
  • BSides Canberra CTF 2023 3rd
  • CrikeyCon X CTF 2025 2nd
  • DownUnder CTF 2025 1st overall
  • DownUnder CTF 2024 1st highschool, 2nd tietiary division
  • DownUnder CTF 2023 2nd tietiary division
  • DownUnder CTF 2022 1st highschool, 3rd tietiary division
  • DownUnder CTF 2021 1st highschool division
  • Pecan CTF 2024 1st overall
  • Pecan CTF 2023 1st overall
  • Pecan CTF 2022 1st overall
  • Pecan CTF 2021 1st intermediate division

Check out my Twitter to see what I’ve been up to recently (embed might be broken and show no tweets. I do tweet though!)