nahamcon ctf 2023
Pretty low effort for this one, but learnt a few nifty tricks. More details
1. Ninety One (Misc)
After decrypting from base 91 @iH<,{|jbRH?L^VjGJH<vn3p7I,x~@1jyt>x?,!YAJr*08P,
We get flag{dfb88c7d9ca38e71dc27e1072fc43d1b}
2. Goose Chase
Copy the google sheets, you’ll see a hidden sheet with a link with the flag. (view -> formula)
Apparently, this is a common way to conceal information in google sheets.