Tags: substitution crypto 

Rating: 5.0

[Original writeup](http://quangntenemy.blogspot.com/2014/03/ructf-quals-2014.html)

The task is to decipher a message written in Chinese characters. The title suggests that this is similar to the cipher used by Mary Queen of Scots, which is a cryptosystem in which simple substitution is used. This cipher is so weak that many tools have been created to solve it automatically, SCBSolvr is one of them. The decrypted text is chapter I of Alice's Adventures in Wonderlands by Lewis Carroll. The name of the book is also the flag.

Original writeup (http://quangntenemy.blogspot.com/2014/03/ructf-quals-2014.html).