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  1. KICyber CTF 2023 Writeups

XORCrypt: Solitary Cipher

Last updated 1 year ago

Description

In the distant future, on the mysterious planet of Zenthia, a lone adventurer named Maya discovered an ancient artifact known as the XORbit. This enigmatic device held immense power and could only be activated with a single character key. As she embarked on a perilous quest to decipher the code, dark forces from across the galaxy pursued her, eager to harness the XOR bit's abilities for their malevolent intentions. Help her decrypt the message

Cipher.txt

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

Solution

  • Using we can decode the cipher text.

  • Scrolling down in the dcode.fr output page we find out that 4f is key

  • Flag: KPMG{Cryptic_art_unfolded}

dcode.fr