Which of the following tools is used to find URLs of AWS S3 buckets?

• A. S3-buckets-bruteforcer
• B. Lazys3
• C. Bucker Finder
• D. S3Scanner

Answer: (B)

Finding AWS S3 bucket URLs involves enumerating potential bucket endpoints and validating which ones exist for a target. Lazys3 is designed for this exact purpose: it focuses on discovering S3 bucket URLs by generating and checking likely bucket endpoints tied to a domain or organization, helping you map out which buckets are present and reachable. This targeted capability makes it the most fitting choice for locating S3 bucket URLs.

Other tools listed have broader or different aims. A tool described for brute-forcing bucket names focuses on guessing names to find publicly accessible buckets rather than systematically listing known or likely endpoints. A scanner that looks for misconfigurations or public buckets serves a different use case—assessing exposure rather than specifically producing a catalog of bucket URLs. The remaining option similarly centers on discovery but without the clear emphasis on enumerating bucket URLs in a targeted way. Lazys3 stands out because it directly addresses the task of uncovering the actual S3 bucket endpoints.