Security Forem

Hitanshu Gedam
Hitanshu Gedam

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picoCTF basic-mod1 writeup

This is a very simple crypto challenge.

All the challenge info is given in the description of the challenge.

I used Programiz Online Python Interpreter and wrote a basic code


decimals = [128, 322, 353, 235, 336, 73, 198, 332, 202, 285, 57, 87, 262, 221, 218, 405, 335, 101, 256, 227, 112, 140]
alphabet_string = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_"

flag = ''.join(alphabet_string[num % 37] for num in decimals)
print(flag)

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The decimals list was the one given to me in the message.txt file

This is how I got my final flag for the challenge.

Enjoy hacking!

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