DIVER OSINT CTF 2026 "read_qr" Writeup
Table of Contents
This article was automatically translated from Japanese by AI.
Challenge
DIVER OSINT CTF 2026 “read_qr”
Solution
When I tried scanning the QR code with a smartphone and opening it in a browser, it opened https://qr.intro26.workers.dev/ and displayed the message Unfortunately, "https://qr.intro26.workers.dev/" is a wrong answer. Decoding the QR code itself with an external service revealed that the stored URL was https://qr.intro26.workers.dev/q/y0u_r34d_7h3_qr_wi7h0u7_4cc3ss.
Flag
Diver26{https://qr.intro26.workers.dev/q/y0u_r34d_7h3_qr_wi7h0u7_4cc3ss}