rgbCTF-2020

CTF Writeup - https://ctf.rgbsec.xyz/

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e

n = 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  
e = 0b1101  
c = 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Shakespeare Play Lost and found

Did you know RGBsec was founded in the 16th century? Our top notch team of RGBsec archaeologists has uncovered this ancient manuscript to prove it. There also were some numbers inscribed beside this manuscript, they might help you. Unfortunately, flag formats hadn’t been invented yet, so you will need to enclose the flag in the flag format.

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RubikCBC

I implemented this really cool Rubiks CBC encryption algorithm and tested it on a document with my flag in it, but my dog ate my hard drive so I couldn’t decrypt the file :(

Luckily I backed up the encrypted file. Can you recover my data?

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N-AES

What if I encrypt something with AES multiple times? nc challenge.rgbsec.xyz 34567

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