Codemash CTF 2019 - Capture the Falg
Clue
This falg is easy to catch, isn’t it?
criSdmetio1AUdW9dP3n----
Hint
fa
lg
Approach
Based on the characters in the text, this appears to be some sort of transposition cipher. I loaded up my favorite cipher tool site and eventually landed on the caesar-box-cipher. Running it through will all possible sizes yields one of the strings being our flag:
cm19-reAd-itUP-Sid3-doWn