a-major-problem (200)

Problem

A mysterious figure named Major Mnemonic has sent you the following set of words. Figure out what they mean!

"Pave Pop Poke Pop Dutch Dozen Denim Deism Loot Thatch Pal Atheism Rough Ditch Tonal"

Solution

Looks like this is a Major Mnemonic problem. You can learn more about it here: https://en.wikipedia.org/wiki/Mnemonic_major_system

- = Unassigned
Pave    = 9 - 8 -     => b
Pop     = 9 - 9       => c
Poke    = 9 - 7 -     => a
Pop     = 9 - 9       => c
Dutch   = 1 - 1 - 6   => t
Dozen   = 1 - 0 - 2   => f
Denim   = 1 - 2 - 3   => {
Deism   = 1 - - 0 3   => g
Loot    = 5 - - 1     => 3
Thatch  = 1 - 1 6     => t
Pal     = 9 - 5       => _
Athiesm = - 1 - - 0 3 => g
Rough   = 4 - 8       => 0
Ditch   = 1 - 1 6     => t
Tonal   = 1 - 2 - 5   => }

bcactf{g3t_g0t}

Original writeup (https://github.com/shawnduong/ctf-writeups/blob/master/2019-BCA/crypto/a-major-problem.md).