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Rules

  1. There is no team size limit.
  2. Do not share or post any flags, hints or solutions publicly during the CTF.
  3. Attacking event infrastructure (DoS / DDoS) is strictly prohibited.
  4. Cross-team collaboration is not allowed. Do not discuss challenges with members from other teams.
  5. Report all rule violations and infrastructure issues/vulnerabilities to the admins ASAP. Any violation of these rules will result in your team being disqualified.
  6. SekaiCTF Organizers reserve the right to disqualify a team if suspected for breaking the rules.

Prizes

The top two teams will earn qualification for the following onsite events:
  • The 10th XCTF Finals in China (2026)
  • MaltaCTF Finals in Valletta, Malta (2025)
  • ※ The first-place team may choose their preferred event; second-place team will qualify for the other.

First Place (Worth $5,000)

  • 2,000 USD
  • 6× HTB 1-year VIP+ and 3-month Prolab Bundle
  • 3× Binary Ninja Personal License
  • Qualification for XCTF or MaltaCTF Finals

Second Place (Worth $3,000)

  • 1,000 USD
  • 6× HTB 1-year VIP+ and 1-month Prolab Bundle
  • 2× Binary Ninja Personal License
  • Qualification for XCTF or MaltaCTF Finals

Third Place (Worth $2,000)

  • 500 USD
  • 6× HTB 1-year VIP+
  • 1× Binary Ninja Personal License

Blockchain Prizes

Every blockchain challenge will have the following bounty:
  • 1st blood: 100 USDT
  • 2nd blood: 50 USDT
  • 3rd blood: 30 USDT

Writeup Prizes

  • 8× 50 USD (2 reserved for blockchain challenges)
  • 3× HTB 6-month VIP+
  • 1× Binary Ninja Personal License (using binja)

Other Prizes

  • First blood prize for speed pwn
  • Bounties for "0-day" challenges