251107_infobahnCTF learning record
251107_infobahnCTF learning record
cvestone- Contact Authors
- Attachments
- EventInfo
- crypto
- reverse
- pwn
- jail
- misc
- web
In the full-stack CTF player program, this article will be continuously updated with recreated learning content
Attachments
Release 251107_infobahnCTF · cvestone/cvestone.github.io · GitHub
EventInfo
ScoreBoard
My team 0xfun’s rank in this event - top 20:
crypto
Linearity
Desc
A gentle introduction to linear cryptanalysis 🙂
Author: BIGMONKE
Key Points:
YAOL
Desc
Length of the entire flag is 43 characters.
Author: ConnorM
Key Points:
Kyoko Ring
Desc
Author: Aeren
Key Points:
Nagisa Determinants
Desc
Note: The output files are all generated with the same flag.
Author: Aeren
Key Points:
Madoka RSA
Desc
Author: Aeren
Key Points:
Sayaka Stream
Desc
Author: Aeren
Key Points:
Homura Hash
Desc
nc homura-hash.challs.infobahnc.tf 1337
Note: There is a 120 seconds connection timeout.
Author: Aeren
Key Points:
Mami LES
Desc
nc mami-les.challs.infobahnc.tf 1337
Note: There is a 120 seconds connection timeout.
Author: Aeren
Key Points:
reverse
blinkenlights
Desc
Let the child choose the movie tonight.
Author: programmer_user
Key Points:
disthis
Desc
Sillymaxxing.
Tested to run on the python:3.13.8-slim docker image.
Author: oh_word
Key Points:
fish
Desc
This fish is swimming backward, can you reverse it? Wrap the flag with infobahn{}
Author: aa.crypto
Key Points:
Access Code
Desc
Security by obscurity. Can find my backdoor and retrieve the flag?
nc access-code.challs.infobahnc.tf 1337
Author: oh_word
Key Points:
LUTsOfFun
Desc
A friend gave me this Bitstream. He told me he hid a secret message and that it would be a LUT of fun to recover it!
Author: BIGMONKE
Key Points:
deno9
Desc
Another day passes by,
Just like every day I spend with you.
Author: t-chen
Key Points:
pwn
pwnset
Desc
Found this in the wild
nc pwnset.challs.infobahnc.tf 1337
Author: rewhile
Key Points:
basic
Book Manager V2
Desc
I updated my book manager. This should be safe now.
nc book-managerv2.challs.infobahnc.tf 1337
Author: 0xM4hm0ud
Key Points:
The Butterfly effect
Desc
In chaos theory, the butterfly effect is the idea that a tiny change in one state can cause vast differences later.
nc the-butterfly-effect.challs.infobahnc.tf 1337
Author: Jopraveen
Key Points:
pwn a brainrot
Desc
I spend 18 hours a day on instagram reels. My friends told me to reconnect with nature, whatever that means…
nc brainrot.challs.infobahnc.tf 1337
Author: oh_word
Key Points:
quintuple-read
Desc
How many ways can you read a file?
nc quintuple-read.challs.infobahnc.tf 1337
Author: GabeG888
Key Points:
jail
pyjail
Desc
Can you escape the jail?
nc pyjail.challs.infobahnc.tf 1337
Author: GabeG888
Key Points:
speechless
Desc
wow i’m in jail??? i’m speechless…
nc speechless.challs.infobahnc.tf 1337
Author: quasar098
Key Points:
Exception Handler - Baby Steps
Desc
co_code challenges fell off. It’s time for something new…
nc exception-handler-easy.challs.infobahnc.tf 1337
Author: oh_word
Key Points:
Exception Handler - Into Orbit
Desc
Can you use your new skills to turn the safest eval function into RCE?
Note: I recommend solving Exception Handler - Baby Steps before trying this challenge.
nc exception-handler-hard.challs.infobahnc.tf 1337
Author: oh_word
Key Points:
very safe pickle
Desc
🔒🔒🥒🔒🔒
Author: t-chen
Key Points:
misc
//
Desc
unary-only
nc unary.challs.infobahnc.tf 1337
Author: 22sh
Key Points:
Risky Chain
Desc
Metal to the future!
nc riskychain.challs.infobahnc.tf 1337
Author: vielite
Key Points:
gitset
Desc
http://gitset.challs.infobahnc.tf:1337
Author: rewhile
Key Points:
web
bitset
Desc
bitset made an image-sharing website, go share some cool images with her!
https://bitset-web.challs.infobahnc.tf
Author: rewhile, bawolff, yuu
Key Points:
bitsets
Desc
She was not happy that you broke her cookies jar!
https://bitset-web.challs.infobahnc.tf
Note: This challenge uses the same attachment as bitset, please capture FLAG2
Author: rewhile, bawolff, yuu
Key Points:
bitsetsy
Desc
bitset winked: tldr (●’◡’●)
https://bitset-web.challs.infobahnc.tf
Note: This challenge uses the same attachment as bitset, please capture FLAG3
Author: rewhile, bawolff, yuu
Key Points:
bitset-revenge
Desc
bitset made an image-sharing website, go share some cool images with her! I hope this time you won’t run, shh!
https://bitset-revenge-web.challs3.infobahnc.tf
Author: rewhile, bawolff, yuu
Key Points:
bitsets-revenge
Desc
She was not happy that you broke her cookies jar! I hope this time you won’t run, shh!
https://bitset-revenge-web.challs3.infobahnc.tf
Note: This challenge uses the same attachment as bitset-revenge, please capture FLAG2
Author: rewhile, bawolff, yuu
Key Points:
bitsetsy-revenge
Desc
bitset winked: tldr (●’◡’●) I hope this time you won’t run, shh!
https://bitset-revenge-web.challs3.infobahnc.tf
Note: This challenge uses the same attachment as bitset-revenge, please capture FLAG3
Author: rewhile, bawolff, yuu
Key Points:
Book Manager
Desc
I wanted to learn some new language. I made a simple book manager. Can you take a look?
nc book-manager.challs.infobahnc.tf 1337
Author: 0xM4hm0ud
Key Points:
PatchNotes CMS
Desc
The smallest CMS ever!
Author: 0xM4hm0ud && Yuu
Key Points:
PatchNotes CMS - Revenge
Desc
Nice! Now try reading the flag again!
Author: 0xM4hm0ud && Yuu
Key Points:
Padoru Pwn Parade
Desc
Padoru Padoru https://www.youtube.com/watch?v=dQ_d_VKrFgM 
Please wait around 1-2 minutes for the instance. It takes some time to deploy.
Author: Yuu
Key Points:
Padoru Pwn Parade - Revenge
Desc
Wow that was fast! Try to pwn it again! https://www.youtube.com/watch?v=dQ_d_VKrFgM
Please wait around 1-2 minutes for the instance. It takes some time to deploy.
Author: Yuu
Key Points:
SAML
Desc
Keeping flags secure is hard work. That’s why I offloaded my user management to an identity provider.
https://saml-web.challs.infobahnc.tf
Author: Bawolff
Key Points:
Infopass
Desc
Keep your P@ssw0rds safe!
https://infopass-web.challs2.infobahnc.tf
https://infopass-bot-web.challs2.infobahnc.tf
Author: t-chen
Key Points:
XML Translator
Desc
XML is such an enterprise standard, lets inject a little fun.
https://xml-translator-web.challs2.infobahnc.tf https://xml-translator-bot-web.challs2.infobahnc.tf
Author: bawolff
Key Points:
Sandbox Viewer
Desc
A simple app, what could go wrong?
https://sandbox-viewer-web.challs.infobahnc.tf
Author: 0xAlessandro
Key Points:
1337 translator
Desc
I’ve always wanted to be a 1337 H4X0R, but the lingo was too much for me. I made this cool app to help. Send me an interesting message if you want.
https://translator-web.challs3.infobahnc.tf
Author: bawolff
Key Points:
Swift Resume Service
Desc
I’ve been meaning to job hunt but writing a resume is just so slow.
I made an app to swiftly write resumes.
https://swift-resume-service-web.challs.infobahnc.tf https://swift-resume-service-bot-web.challs.infobahnc.tf
Author: bawolff
Key Points:
logo
Desc
This is our logo
Note: To get your access token, go to the “Settings” page, open the “Access Tokens” section, and click “Generate”.
The Basic Auth username and password are given by the instancer. You don’t need to bypass the authentication.
Author: t-chen
