ProjectSEKAIctf's profile picture. Project SEKAI, yet another CTF team.
Recruiting: http://shorturl.at/JNU78
Sponsorship & Partnership: pjskctf@gmail.com

Project Sekai CTF

@ProjectSEKAIctf

Project SEKAI, yet another CTF team. Recruiting: http://shorturl.at/JNU78 Sponsorship & Partnership: [email protected]

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Over the weekend, our team competed in XCTF Finals in China as the only international team among 28. We placed 3rd place overall and 1st in the professional division. Huge thanks to @XCTF_League for the amazing event and high quality challenges. Hope to be back next year!

ProjectSEKAIctf's tweet image. Over the weekend, our team competed in XCTF Finals in China as the only international team among 28. We placed 3rd place overall and 1st in the professional division. Huge thanks to @XCTF_League for the amazing event and high quality challenges. Hope to be back next year!
ProjectSEKAIctf's tweet image. Over the weekend, our team competed in XCTF Finals in China as the only international team among 28. We placed 3rd place overall and 1st in the professional division. Huge thanks to @XCTF_League for the amazing event and high quality challenges. Hope to be back next year!
ProjectSEKAIctf's tweet image. Over the weekend, our team competed in XCTF Finals in China as the only international team among 28. We placed 3rd place overall and 1st in the professional division. Huge thanks to @XCTF_League for the amazing event and high quality challenges. Hope to be back next year!
ProjectSEKAIctf's tweet image. Over the weekend, our team competed in XCTF Finals in China as the only international team among 28. We placed 3rd place overall and 1st in the professional division. Huge thanks to @XCTF_League for the amazing event and high quality challenges. Hope to be back next year!

Project Sekai CTF heeft deze post opnieuw geplaatst

Made it to MSRC 2025 Q3 Leaderboard ranking #9 in MSRC Office Scoreboard with #28 ranking overall. Thanks @msftsecresponse My reports. CVE-2025-59243, CVE-2025-59226, CVE-2025-50165

ArjunGU2's tweet image. Made it to MSRC 2025 Q3 Leaderboard ranking #9 in MSRC Office Scoreboard with #28 ranking overall. Thanks @msftsecresponse 

My reports. CVE-2025-59243, CVE-2025-59226, CVE-2025-50165
ArjunGU2's tweet image. Made it to MSRC 2025 Q3 Leaderboard ranking #9 in MSRC Office Scoreboard with #28 ranking overall. Thanks @msftsecresponse 

My reports. CVE-2025-59243, CVE-2025-59226, CVE-2025-50165

We’re excited to share the new Happi coat swag we received from @osec_io! OtterSec has been a generous sponsor for SekaiCTF (2022–2025) and several onsite finals including SECCON CTF and DEFCON — we’re truly grateful.

ProjectSEKAIctf's tweet image. We’re excited to share the new Happi coat swag we received from @osec_io!

OtterSec has been a generous sponsor for SekaiCTF (2022–2025) and several onsite finals including SECCON CTF and DEFCON — we’re truly grateful.

DefCamp CTF 2025 Quals are LIVE! There is still time for you to join the fight - register now 👉 dctf25-quals.cyber-edu.co Good luck and see you on the leaderboard!

Backing the fight, backing the #hackers. We’re proud to support #DefCamp Capture the Flag (D-CTF) 2025 — one of the biggest cybersecurity battlegrounds in Central Eastern Europe! 🗓️Qualifications Phase: Sept 12, 1:00 PM - Sept 14, 1:00 PM (online on CyberEDU) Expect challenges…

ProjectSEKAIctf's tweet image. Backing the fight, backing the #hackers.

We’re proud to support #DefCamp Capture the Flag (D-CTF) 2025 — one of the biggest cybersecurity battlegrounds in Central Eastern Europe!

🗓️Qualifications Phase: Sept 12, 1:00 PM - Sept 14, 1:00 PM (online on CyberEDU)

Expect challenges…


Backing the fight, backing the #hackers. We’re proud to support #DefCamp Capture the Flag (D-CTF) 2025 — one of the biggest cybersecurity battlegrounds in Central Eastern Europe! 🗓️Qualifications Phase: Sept 12, 1:00 PM - Sept 14, 1:00 PM (online on CyberEDU) Expect challenges…

ProjectSEKAIctf's tweet image. Backing the fight, backing the #hackers.

We’re proud to support #DefCamp Capture the Flag (D-CTF) 2025 — one of the biggest cybersecurity battlegrounds in Central Eastern Europe!

🗓️Qualifications Phase: Sept 12, 1:00 PM - Sept 14, 1:00 PM (online on CyberEDU)

Expect challenges…

Project Sekai CTF heeft deze post opnieuw geplaatst

🎉 Last weekend, we teamed up with @ProjectSEKAIctf as P1G SEKAI and secured 2nd place at corCTF 2025! 🙏 Huge thanks to the @cor_ctf team for their excellent organization and high-quality challenges

r3kapig's tweet image. 🎉 Last weekend, we teamed up with @ProjectSEKAIctf  as P1G SEKAI and secured 2nd place at corCTF 2025! 🙏 Huge thanks to the @cor_ctf  team for their excellent organization and high-quality challenges

Project Sekai CTF heeft deze post opnieuw geplaatst

corCTF 2025 has ended! Congrats to the top 5: 1. @FlatNetworkOrg 2. @r3kapig @ProjectSEKAIctf 3. The Amazing Digital Orange 4. @TheRomanXpl0it 5. STM Thank you to all of our players and sponsors! @osec_io, Research Innovations, @ret2systems, @trailofbits, @vector35, @googlecloud

cor_ctf's tweet image. corCTF 2025 has ended! Congrats to the top 5:
1. @FlatNetworkOrg
2. @r3kapig @ProjectSEKAIctf
3. The Amazing Digital Orange
4. @TheRomanXpl0it
5. STM
Thank you to all of our players and sponsors! @osec_io, Research Innovations, @ret2systems, @trailofbits, @vector35, @googlecloud

Two of the challenges got solved after the CTF. Congratulations to them for winning the bounties!

ProjectSEKAIctf's tweet image. Two of the challenges got solved after the CTF. Congratulations to them for winning the bounties!

Four bounties remain unclaimed. We are extending these three for one more week — the first team to open a ticket with the flag wins: - 6◆ pwn/WIC: $200 for the🩸First Solve - 6◆ crypto/unfairy-ring++: $200 for the🩸First Solve - 5◆ crypto/unfairy-ring: $100 for the🩸First…

ProjectSEKAIctf's tweet image. Four bounties remain unclaimed. We are extending these three for one more week — the first team to open a ticket with the flag wins:

- 6◆ pwn/WIC: $200 for the🩸First Solve
- 6◆ crypto/unfairy-ring++: $200 for the🩸First Solve
- 5◆ crypto/unfairy-ring: $100 for the🩸First…


Project Sekai CTF heeft deze post opnieuw geplaatst

This year we AK all blockchain challenges in SekaiCTF once again, its very nice to work on these challenges with my teammate ranwen🥰 (but we only got two small bounties🙃) Thanks to the organizers for preparing such diverse and interesting challenges @ProjectSEKAIctf

zeroc0077's tweet image. This year we AK all blockchain challenges in SekaiCTF once again, its very nice to work on these challenges with my teammate ranwen🥰 (but we only got two small bounties🙃)
Thanks to the organizers for preparing such diverse and interesting challenges @ProjectSEKAIctf

This weekend we played @CTFZone Quals during organizing SekaiCTF, and got 5th place into the Finals! Congrats to @r3kapig for winning.

ProjectSEKAIctf's tweet image. This weekend we played @CTFZone Quals during organizing SekaiCTF, and got 5th place into the Finals! Congrats to @r3kapig for winning.

Project Sekai CTF heeft deze post opnieuw geplaatst

19 hours left! We have released the second wave, and bounties are added for unsolved challenges. I created a pwn challenge 'WIC' and it is still unsolved. Claim 200$ bounty for solving the challenge. play ctf.sekai.team #SekaiCTF

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