Tags: otp crypto 

Rating: 5.0

# Cryptography : One True Problem

![](https://i.imgur.com/aoDzePn.png)

Focusing on the name of the Challenge , i knew it was a OTP ! so basing on that , i used the **cribdrag script** to solve it giving the cipher text in hex format as an input !
We know that utflag would be in the message so we give "utflag{" as a crib as looking for a result !

![](https://i.imgur.com/QEAOgFl.png)

We found on the index 0 "THE BES" so it must be "THE BEST" !
now the description said that the two friends are arguing about the best category , so i tried with "THE BEST C"
and what we got is good so far :

![](https://i.imgur.com/buG7ZvD.png)

again continuing with the crib i gave it "THE BEST CATEGORY" but it gave nothing so i tried with "THE BEST CTF CATEGORY" and here we go :

![](https://i.imgur.com/r1iGWkd.png)

the flag is : **utflag{tw0_tim3_p4ds}**

Original writeup (https://github.com/SemahBA/UTCTF-Writeups/tree/master/Cryptography/One%20True%20Problem).