# BlackHat MEA CTF Qualification 2025

Link: [https://flagyard.com/events/18db1658-bae2-4b1c-9ec7-0a851b5df275](<https://flagyard.com/events/18db1658-bae2-4b1c-9ec7-0a851b5df275>)

CTFTime: [https://ctftime.org/event/2876](<https://ctftime.org/event/2876>)

Participated as a member of [Redbud](<https://ctftime.org/team/20555>)

Result: 1885 Points, 9th Place

Solved challenges that I involved in:

Web:

- [cute\_csp](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/cute-csp.html>)
- [Go brrr](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/go-brrr.html>)
- [Hash Factory](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/hash-factory.html>)

Reverse:

- [Down the Rabbit Hole](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/down-the-rabbit-hole.html>)

Reproduction after competition:

- [file101](<https://jia.je/ctf-writeups/2025-09-07-blackhat-mea-ctf-quals-2025/file101.html>)