it-tools VS CyberChef

Or https://it-tools.tech

For those interested in a solution with more conversions/operations, there's IT-Tools. It also includes a case converter and can be self-hosted.

It-tools now has a dockerize option, or if you prefer to self-host the it-tools yourself.

Neat, thanks for sharing. Composerize and similar has become useless to me over the years, but the full list of tools here has a few interesting things, gonna give it a try.

Dealing with tokens, Date-time IT Tools a super App for developers. Do not forget to try it out leave a GitHub star or sponsor the creators for the awesome and handy tool they envisioned.

Then we take the encrypted text and use CyberChef to decrypt it.

Let's go to CyberChef and insert our pieces of evidence.

A parameter was changed from '2AMBCgIQBg' to 'CgIIAdgDAQ%3D%3D' which is just the correct base64 encoding they should have been using the entire time.

I don't think this was a hostile action by Google, I think someone just added better input validation for security reasons and it accidently broke the bad requests they were sending.

https://gchq.github.io/CyberChef/#recipe=URL_Decode()From_Ba...

❗This is indeed the flag, but the text is encrypted with Base64. Usually, the presence of padding character "=" indicates that's Base64 type of encoding (but that's only one of the hints). To decrypt it, we can use CyberChef. Copy-paste the text and we either:

It uses a combination of magic bytes (like the `file` command), entropy analysis and character frequency detection to determine whether an output is likely to be of interest to the user.

The file type mechanism is written here[0]. There's a list of all signatures we detect here[1].

[0] https://github.com/gchq/CyberChef/blob/master/src/core/lib/F...

I think this can be deciphered using CyberChef...