Challenges

A long time ago, Eth made me promise to never again make a custom fileserver from scratch for ictf. Keeping my word, I made this fileserver using Flask, and it was much easier! Can you make sure I'm not leaking any sensitive information, though?

Note that you'll have to add the brackets back into the flag.

http://137.184.207.224:1005/

I made a password checker to see if a password has been hacked, but imagine my horror when I realized my own password was there! I've redacted that password and any similar ones, can you double check for me and make sure it can't be recovered?

http://137.184.207.224:1003

Made a site to look up words, can you find the definition for flag?

https://words.ictf.iciaran.com/

Just the api source - curl "https://s1.fdow.nl/2TKOR-index.js" -o "index.js" Full source (to run locally) - curl "https://s1.fdow.nl/BN1eB-words.zip" -o "words.zip"

I fell and I think something is bleeding inside of me

https://imaginaryctf.org/f/TsP1z nc 137.184.207.224 1004

You've been sent to state prison for conspiracy to hack a government website. They've thrown you in a pyjail, can you escape?

https://imaginaryctf.org/f/ZmdkA#jail.py nc 137.184.207.224 1002

Alice is trying to communicate a flag to Bob over an insecure channel - namely, you. They think they've got a pretty good scheme to keep you from doing anything unfriendly, though.

Source provided on Alice's remote.

Alice: nc 137.184.207.224 1000 Bob: nc 137.184.207.224 1001

HCO4 + H2O ←-> H3O+ + CO4- 1 M 0 M 0 M -x +x +x 1-x M x x

Ka = (x^{2)/(1-x) = (x}2)/1 = 42. QED

https://imaginaryctf.org/f/Al2dn

My kids wanted to play to the rsa so I made a small version!

https://imaginaryctf.org/f/OZfT3

Hi all - it's been a while, but I'm back! Just graduated college. As part of my final project for my digital audio class, I played with tone insertion steganography a bit. Source for the encoded is provided - can you figure out how to decode it?

Hint: since we can’t hide the hint on the website, join our discord server

https://imaginaryctf.org/f/d6YYx#tone.wav https://imaginaryctf.org/f/7NsaM#tone.py

Just an easy reversing problem!

• https://imaginaryctf.org/f/e6m5s

Can you hear it?

Wrap your result with ictf{}, and put underscores between separate, all caps words like, ictf{JUST_LIKE_THIS}.

https://imaginaryctf.org/f/1Zm7z

Welcome to round 22!

ictf{w3lcome_to_round_22!}