Author: Will Hong
A message has come in but it seems to be all scrambled. Luckily it seems to have the key at the beginning. Can you crack this substitution cipher?
Download the message here.
Hint 1
Try a frequency attack. An online tool might help.The key is given at the top:
iadnmlpfyejswbzvxuhkgrocqt
abcdefghijklmnopqrstuvwxyz
You can use an online tool like CyberChef to decode it.
Show flag
picoCTF{5UB5717U710N_3V0LU710N_B1D36772}