Elite cybersecurity and competitive CTF squad from India. Multi-podium champions across national & international arenas, dissecting vulnerabilities, crafting precision exploits, and dominating global scoreboards.
Founded in 2025, TEAM21 is an aggressive, multi-podium competitive Capture The Flag squad based in India. We dissect complex zero-days and esoteric protocols, reverse-engineer hardened binaries, engineer custom exploits, and battle 24/7 across high-intensity national and international CTF circuits.
Heap manipulation, ROP chains, custom shellcoding, prototype pollution, SSRF, and chained attack vectors engineered for fast-flag capture.
Attacking flawed cryptographic primitives, lattice-based reduction (LLL/BKZ), discrete logarithm vulnerabilities, and custom cipher cryptanalysis.
Deep static and dynamic analysis of stripped x86/ARM/Wasm binaries, anti-debugging bypasses, VM de-obfuscation, and firmware dissection.
Memory dump triage, network packet dissection, and industrial SCADA/OT protocol penetration tested on real-world testbeds.
Exclusive tactical tracking for upcoming CTFtime tournaments. Live countdowns, threat intelligence, and operational deployment feeds.
Documented victories and top ranks across prestigious national and international CTF events.
Secured 1st Prize at the inter-college CTF hosted by the Dept. of Cyber Security & IE(I), in association with Cyber Nexus Club at Jerusalem College of Engineering.
Won the Top Performer Prize and positioned 3rd during a sleepless 24 hours of hacking! 🚩 Ended up 6th overall after missing out on free points in a fun session.
Took championship gold in this high-intensity inter-collegiate competition against leading collegiate squads.
Dominated crypto and web categories to secure clear 1st place on the official scoreboard.
Highest individual point scorer in the entire competition while competing solo, securing 8th overall team placement.
IIT Kanpur · Outranked 9,000+ competitors and 1,000+ teams across 4 elimination stages. Visited C3iHub for OT/SCADA & SOC operations.
Secured 2nd place overall while achieving rank #1 in raw challenge solve score.
Top 10 international finish with 2,672 points, earning 15.960 global CTFtime rating points.
Secured 3rd place podium in an intense 24-hour speed hacking marathon.
Clean podium solve run through forensics, stego, and web challenges.
The minds powering TEAM21 across binary analysis, web exploitation, crypto algorithms, and network forensics.
Official scoreboard history tracked through CTFtime team #375072.
| Place | Event | Points | CTFtime Rating |
|---|---|---|---|
| #7 | $N1PH€RS 3.0 CTF | 2,672 | 15.960 pts |
| #284 | COMPFEST CTF 2026 | 110 | 4.567 pts |
| #661 | TraceBash CTF 2026 | 200 | 0.850 pts |
| #758 | V1T CTF 2026 | 31 | 0.087 pts |
| Place | Event | Points | CTFtime Rating |
|---|---|---|---|
| #168 | H7CTF 2025 | 4,500 | 2.595 |
| #268 | No Hack No CTF 2025 | 110 | 0.315 |
| #287 | LITCTF 2025 | 1,285 | 12.858 |
| #305 | NNS CTF 2025 | 200 | 0.366 |
| #327 | SwampCTF 2025 | 445 | 3.519 |
| #338 | TJCTF 2025 | 1,421 | 5.665 |
| #362 | 1753CTF 2025 | 200 | 2.020 |
| #363 | EnigmaXplore 3.0 | 50 | 0.523 |
| #490 | GPN CTF 2025 | 50 | 0.610 |
| #562 | smileyCTF 2025 | 60 | 0.438 |
| #621 | Junior.Crypt.2025 CTF | 100 | 0.241 |
| #670 | DownUnderCTF 2025 | 700 | 5.577 |
| #846 | BrunnerCTF 2025 | 200 | 0.240 |
| #927 | NahamCon CTF 2025 | 300 | 1.075 |
| #1030 | niteCTF 2025 | 50 | 0.314 |
| #1180 | L3akCTF 2025 | 100 | 0.190 |
| #1236 | V1t CTF 2025 | 10 | 0.042 |
We are always scouting dedicated exploit writers, reverse engineers, and cryptographers who thrive under time pressure. Reach out via LinkedIn or inspect our active profile on CTFtime.
TEAM21 strictly adheres to legal and ethical rules of competitive cybersecurity. All exploits and writeups are engineered in sanctioned educational and competitive Capture The Flag environments.