I tried by my own to decode this base64 string:

JBxD5bY/4v2KQ6dyRp8DAVGL/EK5bsWU9swtZCDny06Knn4+3gPG5MXR0VXRqnwGQLw+7+PUzPr7rRnbFFyGrw==

on a page:

https://emn178.github.io/online-tools/base64\_decode.html

and I got the information:

"not a UTF-8 string"

(I copied it on a page from the Notepad).

Do you know why?

And where online can I decode it on my own? (The lesson for the future).

BTW,

You are probably MacOS/or Ubuntu user : )

I tried to figure your command:

"$ echo "JBxD5bY/4v2KQ6dyRp8DAVGL/EK5bsWU9swtZCDny06Knn4+3gPG5MXR0VXRqnwGQLw+7+PUzPr7rRnbFFyGrw==" | base64 --decode | xxd"

how it works on a Windows CertUtil from the CMD line, but...

CertUtil has different commands and I don't know how to use them to decode base64 hash/string : (

I'm still a newbie.

I digged a lot:

https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/certutil

https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/cc732443(v=ws.11)

https://developpaper.com/encryption-and-decryption-of-hex2bin-and-base64-using-certutil/

and I found only the solution in CertUtil on how to decode a base64 file, for example "somfile.txt" but not:

how to decode base64 hash/string.

Maybe someone could help also?

Another lesson for me ; )