crypto-base64.md

All Your Base Are Belong To Us

• Event: ForeverCTF
• Problem Type: Crypto
• Point Value / Difficulty: Easy
• (Optional) Tools Required / Used:

Steps

Step 1

If you look into ciphers/encoding schemes that use =s at the end (or if you follow the information from the hints), you should find Base64, an encoding scheme that uses 64 characters to represent data, and usually pads the end of the encoded data with one or two =s.

Step 2

You can use an online decoder like this or the terminal command echo dXRmbGFne2NvdmVyZWRfYWxsXzY0X2Jhc2VzfQo= | base64 -d (send the encoded string to the base64 program in decode mode) to recover the flag.