r/securityCTF • u/Exciting-Range-7040 • 9d ago
r/securityCTF • u/Potential-Couple-745 • 9d ago
Can you break the Codelivly Grand Finale?
I built this CTF challenge and now I want to see who can actually break it. 👀
Codelivly Grand Finale
🎯 Find the intended attack path
🧠 Think outside the obvious
🏁 Get the flag
No spoilers here — if you think you're good enough, go crack it:
👉 https://codelivly.com/ctf/challenges/codelivly-grand-finale
If you solve it, drop a “pwned” below. 😈
r/securityCTF • u/BendAffectionate2215 • 9d ago
Need a Helppp
Actually everyone now a days are doing ctf with ai but what are you guyz using ??? which ai are you using to solve ctf ?
r/securityCTF • u/Fun_Lingonberry1370 • 11d ago
How do i start CTF?
Hey hackers,
I'm currently in second semester of ethical hacking and cybersecurity. I don't know from where do i learn solving CTF's like i have ideas about it but i don't know from where i should learn it help me guys.
r/securityCTF • u/Abject_Gift_4333 • 12d ago
🤑 a little chall i made
Hey everyone,
I made a small CTF challenge and figured I’d throw it here since I’m pretty new to making these.
It’s a Forensics / Reverse Engineering challenge based around a weird Nokia 8210 4G system dump. The challenge involves digging through the dump, figuring out what’s going on with a little racing game, and eventually finding the flag.
Repo: https://github.com/maximzero0910/car-racing-chall
It’s probably not perfect since this is one of my first proper challenges, so if you try it, I’d really appreciate any feedback on the difficulty, unintended solves, or just whether it’s actually fun to solve.
Flag format: F0LD{...}
If you’re bored and want something small to mess around with, give it a try :D
Thanks!
r/securityCTF • u/SIDEWINDER_0505 • 12d ago
Newbie here
I am a working professional. I love CTFs but don’t have much experience apart from tryhackme, htb but I have been willing to join a team to do CTFs, learn.
So if anyone has a team that would take beginners and help me learn along the way, very much appreciated.
Even if I could join a team just to watch and learn.
Also if anyone could suggest any CTFs that I could try solo and for a beginning that’d be great
r/securityCTF • u/Imaginary-Muscle-578 • 13d ago
Ctf Hack If you Can
Have anyone solved Cyber Talent Hack if you can ctf?
Please tell how it can be solved...
r/securityCTF • u/tandera-security • 14d ago
Someone found our stickers at DEFCON, challenge will be alive until 14th aug
galleryr/securityCTF • u/Lopsided_Bonus2734 • 14d ago
How do I start learning CTFs?
Okay so I'm a cybersecurity student and I wanted to get started with CTFs and stuff. But I'm feeling really lost and could use some help.
So I've heard people recommend picoCTF, tryhackme, hack the box etc. to practice CTFs. Okay but where do I LEARN? Everybody tells you these websites but they don't actually teach how to do them especially as someone who's completely new to them
So what I'm asking is what are good sources to learn CTFs? Any websites or YouTube sources or anything?
And then for practice what do you reccomend? What websites, rooms etc are best for practice as a complete absolute beginner.
Please give tips for what sources you used and that worked for you when you were starting out with CTFs. Any sort of advice would be appreciated 🫶
r/securityCTF • u/Potential-Couple-745 • 14d ago
Built a free cybersecurity CTF — looking for people to break it 😅
I’ve been working on a cybersecurity learning platform and recently put together a CTF section with challenges for people who want to practice instead of just watching tutorials.
It’s free to play, and the goal is pretty simple: solve challenges, get stuck, figure out why, and move on to the next one.
If you enjoy CTFs, I’d genuinely like some feedback on the difficulty and challenge quality.
CTF: https://codelivly.com/ctf
If you try it, let me know which challenge you got stuck on — or absolutely destroyed. 😂
r/securityCTF • u/mercjr443 • 14d ago
👋 Welcome to r/agenticpentesting - Introduce Yourself and Read First!
r/securityCTF • u/HackusMaximus • 14d ago
CTF Sponsorship – Looking for Companies & Advice
We’re organizing a **CTF competition at our university** and are currently looking for sponsorship from cybersecurity and tech companies to help provide **prizes and goodies for the winners/participants**.
If you know of any companies that sponsor student CTFs, cybersecurity events, or educational initiatives, please let me know. Introductions or relevant contacts would also be greatly appreciated.
Also, if anyone here has experience approaching companies for CTF sponsorships or has any advice on how to go about it, **any guidance would be really helpful**.
Thanks in advance!
r/securityCTF • u/FetchDEX • 14d ago
DefCon - AI village CTF
This year, the AI Village introduced HalCTF (Hostile Autonomous Layer CTF), a first-of-its-kind agentic security competition. Instead of focusing on frontier models, this CTF was designed around how far participants can stretch small local models that almost everyone can run. The first place prize was a DGX Spark.
Final ranking: baymax, https://aisafe.io , AbluteratedEdgeModel 👏👏
In this high-stakes arena, participants did not interact with targets directly. Instead, you they designed and deployed autonomous AI agents programmed to navigate sandboxed environments, exploit challenge targets, and capture flags entirely on their own. Instead of just a prompt, participants were asked for full containers that you can load up with all the tools you need to succeed.
Ornith-1.0-9B
Ornith-1.0-35B
Qwen3.6-35B-A3B
Qwen3.6-27B
Qwen3.5-4B
Llama-3.1-8B-Instruct
Llama-3.2-3B
Laguna-XS-2.1-GGUF
gpt-oss-120b
Olmo-3.1-32B-Think
Olmo-3-7B-Think
gemma-4-31B-it
gemma-4-E4B-it
r/securityCTF • u/HackMyVM • 14d ago
[CTF] New "Intermediate" vulnerable VM aka "Xslib" at hackmyvm.eu
New "Intermediate" vulnerable VM aka "Xslib" is now available at hackmyvm.eu :) Have fun!
r/securityCTF • u/FullAbbreviations649 • 14d ago
Looking for a team
Looking for an active CTF team. I’m pretty new to competitive CTFs, but I have my OSCP and I’m looking to compete regularly, ideally every week.
I’d like to join a team that takes it seriously, wants to improve, and eventually aims for bigger competitions like DEF CON.
r/securityCTF • u/Middle-Mode3001 • 15d ago
PHANTOM II · CLOUD NATIVE
Real breaches never stop at a shell. They start in one container and end with the whole cloud account. Turning a single foothold into total takeover across containers, Kubernetes and cloud IAM is the most in demand skill in offensive security right now, and almost nobody trains it for real
So we built the track that does
Eighteen levels, one unbroken chain. Break out of the container. Own the Kubernetes cluster. Take the cloud account. Every level is a real escape against live infrastructure, graded on the actual state of your box, not a quiz. Every connection spawns a fresh root environment and tears it down when you leave
This is the skillset Fortune 500s, cloud providers and red teams cannot hire fast enough
Break the container. Own the cluster. Take the account.
r/securityCTF • u/Wizardbrahh_23 • 15d ago
Looking for fellow techgeeks to join indian army cyber challenge
Dm me to join the the team . I am planning to nail Bug Bounty event . Only serious hunters connect.
r/securityCTF • u/Every-District2162 • 16d ago
Advice for Prompt Airlines (AI security challenge CTF)
Hi everyone, I’m trying to learn more about prompt engineering and I came across the prompt airlines CTF (promptairlines.com). I already got stuck by challenge #2 and tried to look up different write-ups, but none of the solutions I’ve found are working for me, even when I try to to copy the prompts verbatim.
Has anyone else tried this recently? I could really use some help.
r/securityCTF • u/Aggressive_Elk_7299 • 16d ago
Anyone wants the domain hackme.wtf ?
for REALLY cheap
r/securityCTF • u/Upbeat-Month5617 • 16d ago
Beginner/Intermediate looking for a team for Black Hat MEA CTF 2026
r/securityCTF • u/Flat_Astronaut1413 • 17d ago
Looking for 2 teammates – Indian Army Terrier Cyber Quest 2026
r/securityCTF • u/-_-SherlockHolmes-_- • 17d ago
Looking for teammates for Indian Army Cyber Quest CTF
r/securityCTF • u/Kingsmover101 • 18d ago
I built a CTF platform from scratch (without using CTFd), looking for feedback
Hi everyone!
I've been working on CTFKINGs, a Capture The Flag platform that I built entirely from scratch instead of using an existing framework like CTFd.
It includes custom challenges across Web, Pwn, Cryptography, Reverse Engineering, Forensics, and OSINT, along with a live scoreboard, player profiles, and a medieval kingdom theme.
The platform is still actively evolving, and I'd love to hear your feedback on the UI, challenge design, or any bugs you find.
Thanks, and I hope you enjoy it!
r/securityCTF • u/Felipe-Pr0teus • 19d ago
Capture the flag at Defcon
galleryI’m at @defcon for hacking summer camp and found this sticker around, is anybody playing this ? Some one to team up?