Writeups
How we solved it, step by step. Grouped by CTF year, newest first.
36 of 36 writeups
2026
2 writeups
Jeanne DHACK CTF · Mobile Odyssey
A new mobile game, Mobile Odyssey, is currently in development. Here’s the first version… I don’t even think the UI works properly. 😅 There’s no way...
NDIAS Automotive/IoT CTF · Seed-Key Leak
A dealer tool has been leaked dealer_unlock.pyc SecurityAccess guards the ECU's secrets. Break in and read the flag.
2025
17 writeups
WWFctf · Solidity Jail 1
Bash Jail? Boring. PyJail? Too Common. Introducing for the first time, Solidity Jail! Make a contract to read the flag!
WWFctf · Blank Login
Hm, I don't remember, probably something about three databases.
Ulisse · Telemetry
Elia has just developed a brand-new website to analyze logs at runtime 🧻. Confident in his security skills, he bet his entire house that you won't fi...
Trx · Online Python Editor
If you're tired of fast and good-looking editors, try this. Now with extra crispiness!
Srdnlen · Speed
Welcome to Radiator Springs' finest store, where every car enthusiast's dream comes true! But remember, in the world of racing, precision matters—so t...
Srdnlen · Confusion
Looks like our cryptographers had one too many glasses of mirto! Can you sober up their sloppy AES scheme, or will the confusion keep you spinning?
Srdnlen · Ben 10
Ben Tennyson's Omnitrix holds a mysterious and powerful form called Materia Grigia — a creature that only those with the sharpest minds can access. It...
M0lecon teaser · Yet Another OT
Why do people always want to decrypt both messages?
M0lecon beginner · SmallAuth
I am trying to authenticate but I totally forgot the password, I am screwed!!
M0lecon beginner · ImgPlace
Are you a photographer but have no reputation? Join ImgPlace! Share your photos... and become popular!
M0lecon beginner · GoSecureIt
I've found this website under construction, at the moment you can only register, but I think there's something strange in the cookie
L3akctf · Beneath the Surface
On the surface, this signal is nothing but meaningless noise — a mere whisper of the wind. But dive deeper into this transmission, and a storm begins...
K1ndasus · Key in the haystack
I've encrypted my secret message with RSA. Easy stuff, right? Well, I'm not giving you the key outright... I've hidden it in a haystack! Sure, a key i...
CornCTF · Simple Chat
Simple web application to chat with your friends! Sometimes it does funny things and it's ok like that
CornCTF · ECRSA
RSA or Elliptic Curves? Why not both?
CornCTF · Aeronaut
Aeronaut is a gambling game in which you bet on a multiplier. The goal is to get 100.000.000$. Good luck!
Backdoorctf · Gamble
My friends and I planned a trip to Gokarna and heard about a famous casino with a machine that almost never lets anyone win, only the truly lucky. I’v...
2024
17 writeups
SekaiCTF · Some Trick
Bob and Alice found a futuristic version of opunssl and replaced all their needs for doofy wellmen.
SekaiCTF · Miku vs. Machine
Time limit is 2 seconds for this challenge.
SekaiCTF · Crack Me
Developed for SekaiCTF 2022 but never got a chance to release it. Can you log in and claim the flag?
NoobzCTF · WaaS
Writing as a Service!
NoobzCTF · File Sharing Portal
Welcome to the file sharing portal! We only support tar files!
LitCTF · Kirbytime
Welcome to Kirby's Website.
IronCTF · Rivest, Shamir, Adleman 2
Little John has done his homework and tried fixing the issue in his script. Can you still find his secret.
IronCTF · Rivest, Shamir, Adleman 1
Little John came across an article on RSA encryption. Intrigued but only partially understanding it, he decided to write a script and started using it...
IronCTF · Loan App
One of the first web challenges solved in ctf, not very complex (at least the unintended solution)
IronCTF · b64SiteViewer
This is one of the challenges added later, but despite that it wasn't very complex, in fact the most complex part wasn't even the web part, but despit...
IronCTF · MovieReviewApp
Last web challenge done in the ctf (unfortunately) also one of the fastest to do if you know the right tools
IdekCTF · Hello
Just to warm you up for the next Fight :"D
Cyberspace · ZipZone
I was tired of trying to find a good file server for zip files, so I made my own! It's still a work in progress, but I think it's pretty good so far.
Cyberspace · Trendz
The latest trendz is all about Go and HTMX, but what could possibly go wrong? A secret post has been hidden deep within the application. Your mission...
Cyberspace · Trendy Windy Trigonity
have you seen Tan challenge before? see maple version pi documentation!
Cyberspace · Snake
Can you slither to the win?
Cyberspace · Feature Unlocked
The world's coolest app has a brand new feature! Too bad it's not released until after the CTF..