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Challenge Name
Description
Hint
xoracle
Check out my cool new encryption service! It's very secure! Connect to 0.cloud.chals.io on port 19305.
Read carefully: a small mistake or typo can be all it takes to make an encryption system insecure.
salad
Roman generals really knew how to make salad!
Look up some common types of ciphers.
new-algorithm
On the first day of the job, a new cryptography intern is insisting to upper management that he developed a new encryption algorithm.
What are some differences between encryption, encoding, and hashing?
Challenge Name
Description
Hint
hidden-in-plain-sight
A file contains the flag but it is encrypted.
The file looks a little longer than you would expect.
would-you-wordle
Someone left this secret text string and unfinished Wordle. Can you put them together to get the flag? pUpPHg3KfB15MG2KGtQQMDEECPOF8oa3VA==
Ron's Code
secret-message
Could there be a secret message somewhere?
The employees of both organizations passed Decoding 101 in high school, but failed Encryption 101 in college.
Challenge Name
Description
Hint
file-zip-cracker
Fix the script to brute force the password.
No hints.
audio-transmission
We have intercepted an audio transmission from a known criminal organization.
No hints.
inDEStructible
It's an older code, sir or madam, but it checks out.
No hints.
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