02

Write-ups for TCTT2023/Crypto/02

Flag pattern

CTT23{xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx}

Challenge Files

Lineman.zip

Solution

1. From our knowledge, This is image is Pigpen cipher.

2. We can use this table to read the plaintext.

3. And the result is ILOVENCSA

4. We combine it with the flag pattern, which results in CTT23{ILOVENCSA}