UMDCTF 2021 - Hidden Card | Steg
Hidden Card
My brother said he wrote on one of these cards with ink, but I can’t see it. Can you find out what it says?
Solution
This is the first challenge that I have gotten first blood in. This challenge would have been impossible for those who have never heard of “Digital Invisible Ink Toolkit” or have never tried to google “ink + steganography”.
I just put the image under decode tab and I have made sure to create a blank text file for the output message. Also, no password was needed!
Flag: UMDCTF-{c4rd_1n_a_c4rd$t4ck}