okay so the good news is that they don't just have S3 keys laying around in plain text.
the other good news is that they have a secrets manager
the bad news is that they rolled their own secrets manager
the extra bad news is that I have the source for said secrets manager
and the extra extra bad news is that it has to decrypt those keys without external input, meaning I have all the parts here to pull out their s3 keys
oh hey!
this thing authenticates to some of their servers (which are still up, even if the company might not be (this is unknown at the moment)) over SSH! using keys kept in the same home-rolled vault thing!
so I can SSH into their servers now!