Welcome to the thrilling world of Capture The Flag (CTF) with a special focus on the fascinating art of encryption! In this competition, we will dive into the realm of cybersecurity with a CTF designed specifically for beginners and those looking to unravel the mysteries of encryption using the powerful tool, CyberChef.
Get ready for a low-level challenge that will allow you to explore the basics of encryption and decryption, all while leveraging CyberChef, an intuitive tool developed by GCHQ. This CTF not only provides you with hands-on experience but also offers a friendly and accessible introduction to the exciting realm of cybersecurity.
So, gear up your technical skills, fuel your curiosity, and get ready to dive into this thrilling CTF centered around using CyberChef for encryption. Let the competition begin, and may the excitement of deciphering codes envelop you all!
If you have never used the CyberChef tool take a look at the following post:
CTF 1 – Encrypt and decrypt strings with CyberChef
Tools needed: Cyberchef
1. Encode the string ‘HelloCyberGuardian’ to Base64.
2. Using the output from the previous question (1) add an MD5hashing function to the recipe. What is the output?
3. Encode the string ‘I am using Vigenere to encrypt’ with the key ‘cyberguardian’ using Vigenere code. What is the output?
4. Decrypt ‘01000011 01100001 01110000 01110100 01110101 01110010 01100101 00100000 01110100 01101000 01100101 00100000 01100110 01101100 01100001 01100111 00100000 01110111 01101001 01110100 01101000 00100000 01000011 01111001 01100010 01100101 01110010 00100000 01000111 01110101 01100001 01110010 01100100 01101001 01100001 01101110’ from binary. What was the original string?
Enjoy!
CTF 1 – Encrypt and decrypt strings with CyberChef – Answers
Results
Try Again!!
#1. Encode the string 'HelloCyberGuardian' to Base64.
#2. Using the output from the previous question (1) add an MD5hashing function to the recipe. What is the output?
#3. Encode the string ‘I am using Vigenere to encrypt’ with the key ‘cyberguardian’ using Vigenere code. What is the output?
#4. Decrypt ‘01000011 01100001 01110000 01110100 01110101 01110010 01100101 00100000 01110100 01101000 01100101 00100000 01100110 01101100 01100001 01100111 00100000 01110111 01101001 01110100 01101000 00100000 01000011 01111001 01100010 01100101 01110010 00100000 01000111 01110101 01100001 01110010 01100100 01101001 01100001 01101110’ from binary. What was the original string?.
CTF 1 – Encrypt and decrypt strings with CyberChef – Solutions
Responses to this CTF will be published in the next CTF. That is to say, in CTF 2 the new CTF to be performed and the answers of the previous one will appear.
A CTF N will always be published and in this CTF the answers of CTF N-1 can be found.
