s3enum is a tool to enumerate a target's Amazon S3 buckets. It is fast and leverages DNS instead of HTTP, which means that requests don't hit AWS directly.
It was originally built back in 2016 to target GitHub.
go get -u github.com/koenrh/s3enumYou need to specify the base name of the target (e.g. hackerone), and a word list.
You could either use the words.txt file from this repository, or get a word list
elsewhere. Optionally,
you could specify the number of threads (defaults to 10).
$ s3enum --wordlist examples/wordlist.txt --suffixlist examples/suffixlist.txt hackerone
hackerone
hackerone-attachment
hackerone-attachments
hackerone-static
hackerone-upload