advent-of-cyber-2025

Room Link:
https://tryhackme.com/room/encoding-decoding-aoc2025-s1a4z7x0c3

▶️ Talking Sasquach – Day 17 Video Walkthrough

Official walkthrough for quick onboarding:

🔗 YouTube Link:
https://youtu.be/prpZJs1Y88Y?si=RBSON6ppC5X5H7nr

🎄 Advent of Cyber 2025 — Day 17 Write-Up

🧩 CyberChef — Hoperation Save McSkidy

challenge start

✅ Challenge Answers

🔐 Lock 1 — First Password

lock1 user lock1 username

Username:

Q290dG9uVGFpbA==

lock1 question lock1 debugger lock1 convert

The Base64 query is sent to the provided chatbox, which returns a Base64-encoded response.

lock1 response lock1 decoded

Iamsofluffy

🔐 Lock 2 — Second Password

lock2 username

Username:

Q2Fycm90SGVsbQ==

lock2 question lock2 encode lock2 decode1 lock2 decode2 lock2 password

Itoldyoutochangeit!

🔐 Lock 3 — Third Password

lock3 username

Username:

TG9uZ0VhcnM=

lock3 key lock3 question lock3 received lock3 decode lock3 result lock3 password

BugsBunny

🔐 Lock 4 — Fourth Password

lock4 username

Username:

TGVubnk=

lock4 received lock4 decode lock4 hash

passw0rd1

🔐 Lock 5 — Fifth Password

lock5 username

Username:

Q2FybA==

lock5 process1 lock5 process2 lock5 decode lock5 password

51rBr34chBl0ck3r

🏁 Final Flag

THM{M3D13V4L_D3C0D3R_4D3P7}