substitution

Challenge

• substitution0: https://artifacts.picoctf.net/c/379/message.txt

• substitution1: https://artifacts.picoctf.net/c/414/message.txt

• substitution2: https://artifacts.picoctf.net/c/107/message.txt

Solution

Use quipqiup.com. For substitution2, set the solve mode to "statistics."

Flag

• substitution0: picoCTF{5UB5717U710N_3V0LU710N_59533A2E}

• substitution1: picoCTF{FR3QU3NCY_4774CK5_4R3_C001_4871E6FB}

• substitution2: picoCTF{N6R4M_4N41Y515_15_73D10U5_8E1BF808}