July 10, 2024, 8:38 a.m. | Mohsin Mukhtiar Lashari

DEV Community dev.to

Details:

Points: 10

Jeopardy style CTF

Category: Cryptography

Comments:

Cryptography can be easy, do you know what ROT13 is?



cvpbPGS{arkg_gvzr_V'yy_gel_2_ebhaqf_bs_ebg13_MAZyqFQj}


ROT13 is a cipher that rotates each character 13 letters over. The mod 26 is a hint about looping back around. You can use an online decoder but since I'm trying to explain things a bit more here I decided to make a small script to decode this:



# initial encrypted text
flag = "cvpbPGS{arkg_gvzr_V'yy_gel_2_ebhaqf_bs_ebg13_MAZyqFQj}"

# A-Z
AZ …

back can cipher comments cryptography ctf decoder easy jeopardy letters mod picoctf points rot13 things

Journeyman Software Developer

@ Leidos | 6314 Remote/Teleworker US

Customer Assurance Analyst

@ London Stock Exchange Group | POL-Gdynia-3T Office Park, Tower C

Risk Consulting - Protect Tech - Senior -ERP Controls

@ EY | Bengaluru, KA, IN, 560016

ITGC Senior

@ EY | Hyderabad, TG, IN, 500081

Technology Risk Officer

@ State Street | Quincy, Massachusetts

Sr. Risk Manager, Data Risk Governance

@ KeyBank | For Those Who Work At Home, OH