Project Sekai CTF
@ProjectSEKAIctf
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Project SEKAI, yet another CTF team. Recruiting: Sponsorship: project.sekai @sekai .team
Joined February 2022
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SekaiCTF 2024 is officially over. Thanks everyone for participating! We hope you enjoyed it. We will read all your feedback carefully to improve next edition.🥰
🥇
@Nu1L_Team
🥈
@idekCTF
🥉
@r3kapig
🏅
@0ops_ctf
🏅
@thehackerscrew1
Congratulations to top 10! As a reminder, we
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🎁 Monthly Giveaway 🎁
Hack The Box 6-month VIP x1
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 27 October.
#hackthebox
#giveaway
#projectsekaictf
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747
🎁 Monthly Giveaway 🎁
Hack The Box 12-month VIP Plus x1
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 7 March.
#hackthebox
#giveaway
#projectsekaictf
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745
🎁Monthly Giveaway🎁
HTB 12-month VIP Plus x1
HTB 1-month Pro Lab Bundle x1
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 6 Dec.
#hackthebox
#giveaway
#projectsekaictf
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692
🎁 Monthly Giveaway 🎁
Hack The Box 12-month VIP Plus x1
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 21 Sep.
#hackthebox
#giveaway
#projectsekaictf
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🎁 Monthly Giveaway 🎁
Hack The Box 12-month VIP+ x1
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 3 September.
#hackthebox
#giveaway
#projectsekaictf
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🎁 Monthly Giveaway 🎁
Hack The Box 6-month VIP x1
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 23 July.
#hackthebox
#giveaway
#projectsekaictf
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🎁Monthly Giveaway🎁
HTB 1-month Pro Lab Bundle x2
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 20 Jan.
#hackthebox
#giveaway
#projectsekaictf
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🎁 Monthly Giveaway 🎁
Offensive Security 3-month PG Practice Subscription x1:
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on 28 September.
#offsec
#giveaway
#projectsekaictf
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Thanks to SECCON org for the great event, and it was fun meeting up and collabing with
@r3kapig
!
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Registration for SekaiCTF 2023 is now open:
Our prize pool features USD$3,000 in cash and prizes worth over $16,000. Join our Discord to keep up-to-date:
Huge shoutout to our sponsors:
- OtterSec (
@osec_io
)
- Trail of Bits
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SekaiCTF is officially over, thanks everyone for participating! We hope you enjoyed it. We will read all your feedback carefully to improve next edition.🥰
🥇Maltese Prison Escapees
🥈Kalmarunionen
🥉Black Bauhinia
Congratulations to top 10! As a reminder, we have writeup
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Official challenge source code and writeups are now available:
Thanks for your time!
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Our CTF merger team, Friendly Maltese Citizens, has officially qualified for DEFCON CTF finals as a result of getting 2nd place in HITCON!
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First onsite meetup for Project Sekai since founded
@defcon
! Had lots of fun gathering and playing CTF together.
Also shoutout to
@hackthebox_eu
for organizing a wonderful event :)
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SekaiCTF is officially over, thanks everyone for participating! We hope you enjoyed our first CTF. We will read all your feedback carefully to improve next edition.🥰
🥇:
@justCatTheFish
🥈: FrenchRoomba
🥉: zwnj
🏅:
@idekCTF
🏅:
@BulbaHackers
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📸2023 Recap:
- Ranked 12th on CTFtime overall
- 1st place in 14 CTFs out of 34 played
- Participated in multiple onsite finals including WACON, HITCON, BHMEA and SECCON
- Organized SekaiCTF with almost 1000 teams joined
- First team meetup at DEFCON
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Is cryptography too easy and boring for you? Have you cleared CryptoHack and want to feel something? Come try our zero-day crypto challenge!
Introducing APPEND: the new highest difficulty in SekaiCTF. Zero-days, n-days, and scalp-tearing challenges which push the skill ceiling
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Arcade meetup before DEF CON CTF finals tomorrow!
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We ended up with 1st prize in XCTF finals. Thanks for the event!
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With 40 days left until SekaiCTF 2023, we'd like to announce our increased prize pool: featuring USD$3,000 in cash and prizes worth over $16,000!
Website registration, sponsorship information, and various challenge teasers will arrive soon.
Check out our CTFtime and Discord to
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With 3 weeks left until SekaiCTF 2024, we'd like to announce our prize pool this year, featuring USD$3,000 in cash and prizes worth over $10,000! Additionally, as a qualifier event for
@XCTF_League
, the winning team will earn a spot in the 9th XCTF Finals in China.
Website
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Last weekend we played DiceCTF finals onsite with
@r3kapig
and finished 5th place. We got 1st in dice-diary and 2nd in dice-grid. Thanks to
@dicegangctf
for the great event!
Huge congrats to
@idekCTF
for winning, and our HS team
@vsctf
for 6th overall and 1st in HS division!
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We collabed with
@ARESxCTF
and placed first on WACON Prequal international division! Great CTF organized by
@SuperGuesser
:)
We’re actively looking for sponsors to fly out our 4-person team to Seoul, Korea for finals during 9/25-26. DM us or email project.sekai
@sekai
.team if
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Over the weekend we played Glacier CTF organized by
@LosFuzzys
and got 1st place! High quality challenges and difficult pwns.
Wasn't able to get the extra bonus on Yahoo’s bug bounty program but congrats to
@0rganizers
for 2nd and
@r3kapig
for 3rd!
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Looks like someone’s Windows kernel hacking challenge didn’t pan out so well... (ﾟДﾟ*)ﾉ┻━┻
Don't worry, we’ve got you covered—we’re bringing Windows pwn to SekaiCTF 2024! Get ready and register now, 24 hours remain:
#SekaiCTF
#Teaser
We heard a lot of BSODs happened this past week because of a little coding oopsies from
@CrowdStrike
We always were known Linux kernel hacking, but get ready for a Windows kernel pwnable this time against our home-rolled antivirus👀
Come register at !
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In SekaiCTF 2024, Reverse/Sekai Licensing got no solves. Here's the author's detailed writeup from
@3dsboy08
:
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Congratulations to
@cursedCTF
for winning Bucket CTF this weekend while hosting their own cursedCTF!
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Thanks to
@hackthebox_eu
for the wonderful event, we managed to clear all challenges and stay in Top 5 :)
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Three CTF wins this weekend played as the merger!
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The story behind the Windows Kernel pwn - Process Flipper challenge in SekaiCTF 2024: background, deployment challenges and solution by
@bienpnn
:
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SekaiCTF 2023 has officially started! Good luck and have fun!
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#SekaiCTF
2024 is in 2 months! We are thrilled to announce that we have partnered with
@XCTF_League
to be a qualifier event for the 9th XCTF Finals hosted in China. As such, the winning team of SekaiCTF 2024 will earn a spot in the 9th XCTF Finals.
Best of luck to all teams!🏆
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Happy New Year! Here's the 2022 recap for Project Sekai CTF:
- Team's first year, grew from 2 to around 15-20 active members
- Played 60 events, won 14 of them (most wins record on CTFTime to date!)
- Finished with 20th overall
- Hosted SekaiCTF 2022 with great feedback :)
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1st place to finals! Thanks
@justCatTheFish
for the difficult and great quality challenges.
This weekend,We collab with
@ProjectSEKAIctf
to play justCTF 2024 as P1G SEKAI.we got 1st 🥇.Meanwhile it's first time for P1G SEKAI to win 1st.Thanks for
@justCatTheFish
qualified chal.See your guys into Poland!
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This weekend, we collabed with
@r3kapig
as P1G SEKAI and finished 3rd in DiceCTF 2024 Quals! As usual, thanks to
@dicegangctf
for the high quality challenges.
Congrats to Blue Water and
@0rganizers
. See everyone in finals!
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We teamed up with
@ARESxCyber
for Cyber Apocalypse this year and managed to clear all the challenges to secure 4th place! Great teamwork from everyone and thanks to
@hackthebox_eu
for the wonderful challenges!
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🎁 Monthly Giveaway 🎁
Hack The Box 6-month VIP x1
- Follow, Like, and Retweet to join!
- Winner will be picked randomly on Jun 15th.
#hackthebox
#giveaway
#projectsekaictf
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We played cr3 CTF over the weekend and got 1st place! Thanks to
@cr3mov
for the challenges. Also congrats to
@thehackerscrew1
@idekCTF
for the prizes :)
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SekaiCTF 2024 introduces “speedpwn”: a speedrunable, LiveCTF-style pwn challenge where the first victor amongst all CTF competitors will claim a US$77.77 bounty! “speedpwn” will be released exactly 24 hours into the competition.
Wish to join the race? Register at
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Over the weekend we played UMDCTF hosted by
@umdcsec
and got the first place. Fun challenges and great work put up by the orgs. Congrats to other prize winners too!
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In SekaiCTF 2023, we'll be featuring the following bounties for each of our three blᴏckchain (Ethereᴜm & Sᴏlana) challenges, authored by our team members
@_YaNnhui_
and
@triacontakai
:
- 1st blood: $125 USD
- 2nd blood: $75 USD
- 3rd blood: $50 USD
There will also be two $50
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Over the past few days, members of Project Sekai participated in both the general and junior divisions of
@CODEGATE_KR
, with one of our own also contributing as an author. Thanks to Codegate for an amazing event!
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B6ACTF.
#DEFCON
CERTIFIED. COME PLAY!
(🧵1/2)
Hackers! Drop your be-be-be-beat!
"Brain cells are lit. Exploits start to hit
Next the loopholes that are going to fit
At the table I sit, making it legit
And when my hand hits the keyboard. ah shit"
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Our team is competing for 8th XCTF Finals onsite in Chengdu, China
@XCTF_League
, and finished 6th in jeopardy round. Off to KoH tomorrow :)
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Hey, we won the DEFCON CERTIFIED CTF! Thanks to
@BlackB6a
for the event.
Come play SekaiCTF next weekend!
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SekaiCTF 2024 has officially started! Good luck and have fun!
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Registration for SekaiCTF 2024 is now open:
Our prize pool features USD$3,000 in cash and prizes worth over $10,000! Join our Discord to keep up-to-date:
Huge shoutout to our sponsors. Thank you for your generous support:
-
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We finished 7th on a collab with
@r3kapig
for SECCON quals and booked a slot for the finals! Great challenges from
@secconctf
and look forward to the onsite event.
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Over the weekend we played the first CTF of 2024 and got 1st place! Thanks to IrisSec for the interesting challenges.
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"I like Half-Life, but I'm too noob to play through it alone - luckily, there's a game that allows me to play through Half-Life with my friends.
Since it's an old game, only text and voice chatting are available, so I tried to introduce sticker chatting to the game. Please come
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We participated in AVSS onsite finals with
@r3kapig
and got 3rd place. Thanks to
@GEEKCONTOP
for organizing the event!
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We got 6th in
#BHMEA23
CTF over the week. Didn't manage to get top 5 but it was a close battle!
Big congrats to
@dicegangctf
for winning +
@Blackhatmea
for the nicely organised event. We will come back stronger next year!
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What a great weekend finishing 1st in HITCON QUALS! Thanks to
@HacksInTaiwan
for the great challenges and see you in Taipei in November🇲🇹
Also congrats to Blue Water &
@thehackerscrew1
for getting 2nd & 3rd.
What a great Weekend finishing 3rd in HITCON QUALS , see you in Taipei in November 🪛
@HacksInTaiwan
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Had a fun (and grindy) weekend winning
@idekCTF
- Thanks for the nice challenges!🥳
Congrats to
@r3kapig
and
@thehackerscrew1
for 2nd and 3rd place!
And that's a wrap on idekCTF! Thanks to all our participants, sponsors, and challenge authors for making this year's event truly fantastic. ❤️
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Team competing at Cyber Mimic Defense finals in Nanjing, China - Thanks to organizers for the invitation.
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We published our CTF on ctftime: . It will happen later this year, and we hope to bring a set of quality challenges from beginner to advanced level to all of you :)
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In SekaiCTF 2024, we'll be featuring the following blood bounties for each of our four blᴏckchain challenges:
-🩸1st blood: 100 USDT
-🩸2nd blood: 50 USDT
-🩸3rd blood: 30 USDT
There will also be two (x2) $50 USD prizes reserved for the best blᴏckchain challenge writeups.
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SekaiCTF has officially started, have fun everyone!
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Our team is looking for a web player for Codegate 2024 Finals. CTF happens Aug 29-30 and accomodation is covered for 2 nights from 28-30. Flight is not reimbursed.
If anyone is interested, feel free to shoot a message.
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Here's our customized Bingo...Is 502 in cursedCTF??? Probabaly NOT
Thanks for playing cursedCTF!!!
We did it! Full blackout! Someone make a new one for next year <3
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During the weekend, we participated in BRICS+ CTF Quals organized by C4T BUT S4D team and secured 1st place. As a reward, we also receive an invitation to compete in the 8th XCTF finals in China next year.
We enjoyed the event and look forward to both upcoming finals!
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Two of our team members are unable to travel due to visa issues. If anyone is interested in competing in finals during Sep 28-29 with us please reach out to _cra2yman_ on Discord.
Finals is onsite in Cracow, Poland:
This weekend,We collab with
@ProjectSEKAIctf
to play justCTF 2024 as P1G SEKAI.we got 1st 🥇.Meanwhile it's first time for P1G SEKAI to win 1st.Thanks for
@justCatTheFish
qualified chal.See your guys into Poland!
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Over the weekend we played UofTCTF and got 1st place again. Nice start this year :)
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Played as part of
@malta_ctf
and secured 1st place. Congrats to other teams too!
The results are in 📢
Give it up to the brave winners of
#CyberApocalypse24
, who reached the top and won over KORP™️!
🥇
@malta_ctf
🥈
@FlatNetworkOrg
🥉
@Synacktiv
The competition is not over, though. You still have time to try out some exclusive challenges and put your skills
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Congratulations to our teammate
@_piers2
for successful challenge in
#P2OVancouver
!
Validated! Dungdm (
@_piers2
) of Viettel Cyber Security used two bugs, include the ever risky race condition, to exploit
#Oracle
VirtualBox. As a round 3 winner, they receive $20,000 and 4 Master of Pwn points.
#Pwn2Own
#P2OVancouver
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Here comes our last teaser: CTF is incomplete without hacking boxes! In SekaiCTF, our
@hackthebox_eu
player
@medelleuchv1
will be presenting you a unique and interesting box to be conquered. Can you get the root?
As a reminder, register at if you haven't!
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Played CrewCTF this weekend and ended up 1st, nice event and congrats to other top teams!
CrewCTF 2023 has concluded! Thanks to all the participants, sponsors, and our organizing team for this amazing event!
Congrats to the winners:
1. Project Sekai (
@ProjectSEKAIctf
)
2. fredd fan club (
@team796f75
)
3. no rev/pwn no life (
@r3kapig
)
4. Don't Steal My CVE
5. SKSD
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We would like to announce SekaiCTF 2022 Writeup Prize Winners: 🧵
Cash Prize Winners:
1.
@josep68_
(FrenchRoomba) - crypto/EZmaze
2. An00bRektn (Inactive Directory) - web/Bottle Poem
(1/4)
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2nd place this year
@angstromctf
. Challenges are great and congrats to
@kalmarunionenDM
@justCatTheFish
for top 3.
We played
@angstromctf
in the past weekend and placed 6th - unfortunately not being able to all clear due to uncertainty😁Congrats to Kalmar,
@justCatTheFish
and
@r3kapig
for top 3.
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Completed under 24 hours and had lots of fun. Thanks for the vTuber CTF from
@jellyhoshiumi
and her Starknights :)
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Our writeup for this challenge from
@_YaNnhui_
:
I've dropped the source code and my solution for Lustrous in HITCON CTF 2024 Quals, a Vyper challenge Congrats
@mmm_ctf_team
on the first blood!
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Check out our writeup from
@HodelAaron
in UMDCTF:
This solve was the first blood and Flipper Zero device prize winner.
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Ended up top 5 in team's first ever onsite finals! Great performance from teammates.
Thanks to
@ARESxCTF
for the collab and
@SuperGuesser
for the event.
We collabed with
@ARESxCTF
and placed first on WACON Prequal international division! Great CTF organized by
@SuperGuesser
:)
We’re actively looking for sponsors to fly out our 4-person team to Seoul, Korea for finals during 9/25-26. DM us or email project.sekai
@sekai
.team if
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Big props to
@idekCTF
,
@thehackerscrew1
,
@ARESxCyber
and
@EmuExploit
, our collab team managed to get 8th place. Enjoyed the competition a lot!
And yes, we'll get more for next year...😎
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We played WolvCTF this weekend and secured first place with a big win. Nice challenges from
@WolvSec
and congrats to
@r3kapig
for 2nd and
@TheFewChosenTFC
for 3rd :)
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Our writeups for 2024 January CTFs:
- IrisCTF: Sharing is Caring (Networks, 1 Solve) by
@legoclones
- UofTCTF: Export Grade Cipher (Crypto, 10 Solves) by
@Wrth1_
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This weekend, we played SCTF 2024 from
@XCTF_League
invitation and got 2nd place. Thanks to organizers for the nice challenges!
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Great work from our teammate!
Success! dungdm (
@_piers2
) of Team Viettel (
@vcslab
) used an uninitialized variable and a UAF bug to exploit Oracle VirtualBox. They earn $40,000 and 4 Master of Pwn points.
#Pwn2Own
#P2OVancouver
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We are recruiting active members for upcoming CTFs. Fill out the form if you wanna join the Sekai!
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If you enjoyed web challenges in DiceCTF or corCTF from
@Strellic_
, come play SekaiCTF where he will be presenting a few fun yet challenging problems to solve!
#SekaiCTF
#Teaser
Join our Discord for updates if you haven't:
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This weekend we successfully qualified for m0leCon finals for the first time with
@r3kapig
. Look forward to the finals!
4th place in
@pwnthem0le
’s m0leCon Teaser CTF! 🎉
Excited to compete in the m0leCon finals again!
Congrats to all the finalists—see you in Turin! 😁
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Last 9 hours of SekaiCTF! Will
@justCatTheFish
be able to keep the first place?
Make sure you fill out the survey if you played the event. Thanks for playing!
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@intigriti
August Challenge (author:
@aszx87410
) has concluded. Here's a winning writeup entry from our teammate
@t0m7r00z
:
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