The TechTransThai Security Research team recently participated in SekaiCTF 2026; here is a collection of our notable solves in this event. Migurimental (Web; Easy) Submitted by ominachan We’re given links to two websites: https://migurimental.chals.sekai.team and https://migurimental-2.chals.sekai.team. We are also given both sites’ source code. Both are written in Next.js 16.2.9 using the Pages Router, and each hold one half of the flag. Access to the pages containing the flag is locked behind identity checks which we will need to bypass. ...








