repetitions

Description

Can you make sense of this file?

Download the file here.

Hints

1

Multiple decoding is always good.

Recursion

We have a file enc_flag which we can view in a text editor

VmpGU1EyRXlUWGxTYmxKVVYwZFNWbGxyV21GV1JteDBUbFpPYWxKdFVsaFpWVlUxWVZaS1ZWWnVh
RmRXZWtab1dWWmtSMk5yTlZWWApiVVpUVm10d1VWZFdVa2RpYlZaWFZtNVdVZ3BpU0VKeldWUkNk
MlZXVlhoWGJYQk9VbFJXU0ZkcVRuTldaM0JZVWpGS2VWWkdaSGRXCk1sWnpWV3hhVm1KRk5XOVVW
VkpEVGxaYVdFMVhSbHBWV0VKVVZGWmFWMDVHV2tkYVNHUlZDazFyY0ZkVWJGWlhZVlpLU0dWRlZs
aGkKYlRrelZERldUMkpzUWxWTlJYTkxDZz09Cg==

This looks like base64 encoding, so let's try to decode it

Base64 Decode and Encode - OnlineBase64 Decode

Hmm, that's not a flag

But it looks like the result is still base64 encoded

From the hint and the title of the question, let's try repeatedly decoding until we get something

• V1RCa2MyRnRTWGRVYkZaVFltNVNjRmRXYUU5aVJUVnhWVzFhYVdGck5UWmFSVkpQWVRGbmVWVnVRbHBsYTBweVUxWmpNRTVHWjNsVgpXR1JyVFdwV2VsUlZVbE5oTURCNVZXMWFZUXBTTVZWNFZGZHdU MkpWTlVWaVJHeEVXbm93T1VOblBUMEsK

• WTBkc2FtSXdUbFZTYm5ScFdWaE9iRTVxVW1aaWFrNTZaRVJPYTFneVVuQlpla0pyU1ZjME5GZ3lVWGRrTWpWelRVUlNhMDB5VW1aYQpSMVV4VFdwT2JVNUViRGxEWnowOUNnPT0K

• Y0dsamIwTlVSbnRpWVhObE5qUmZiak56ZEROa1gyUnBZekJrSVc0NFgyUXdkMjVzTURSa00yUmZaR1UxTWpObU5EbDlDZz09Cg==

• cGljb0NURntiYXNlNjRfbjNzdDNkX2RpYzBkIW44X2Qwd25sMDRkM2RfZGU1MjNmNDl9Cg==

Aha!

Flag

picoCTF{base64_n3st3d_dic0d!n8_d0wnl04d3d_de523f49}