AWS S3 is a key-value store, one of the major categories of NoSQL databases used for accumulating voluminous, mutating, unstructured, or semistructured data. Uploaded objects are referenced by a unique key, which can be any string. This high-level and generic storage structure affords users near-infinite flexibility. Features such as metadata support, prefixes, and object tags allow users to organize data according to their needs.
Management of AWS S3-hosted stores is straightforward yet flexible. From a graphical console customers can work directly with objects. The platform provides a REST interface that lets developers manage stored information at the account level, within buckets, or within individual objects. S3 also supports batch operations across all levels, and a related service, AWS Lambda, can allow these operations to perform arbitrarily complex tasks.
S3 is intended to handle a high volume of requests with no interruptions, and also guarantees uptime during traffic spikes. Users are also insured against AWS site-level failures, and Amazon makes guarantees of durability similar to those for availability.
AWS S3 includes a version control system to protect against unwanted deletions or accidents. Users can also turn on logging, which saves detailed information about interactions with stored data for troubleshooting and repair. S3 offers several storage classes for different use cases and expected volumes. The standard storage class guarantees S3 pricing generally scales with usage. Using this method, I gathered about MB of txt files , but as you probably suspect, there were a lot of useless paths and duplicates of the same names — awk , cut , uniq and sort in this situation were my best friends.
To sum up — I extracted potential bucket names and of them were publicly open. Furthermore, I was able to write to of them. Doing everything manually would take a lot of time, so I decided to use two tools that harvest data for me — Sublist3r and Amass :. And going to the results — Amass gathered a total of unique bucket names , where I was able to read of them and write to Sublist3r collected a crazy amount of bucket names!
But to our misfortune, of them did not exist, so we are left with publicly open buckets and 59 writable ones. One of the mentioned techniques was listening to certificate transparency logs. As you may know, every issued TLS certificate is logged publicly to verify if a certificate is properly issued and is not maliciously used. The idea of this is correct, but… it leaks publicly every domain — also the S3 buckets, which is good for us!
After running it for two days, I gathered bucket names , where only 16 were accessible , and to 4 I was able to write. The last method I used and I guess the most interesting one despite not having the most spectacular results — gathering data about companies that use AWS services.
That was not enough — so the first thing I did was to use Amass again, to gather even more subdomains! To do this, I used the following command:. In the next step, I used a tool called Aquatone , which did a lot of work for me — by screenshotting every page and harvesting headers from all of the accessed addresses:.
It took some time, but in the end I was left with 2,7GB of output data mainly screenshots and txt. It turned out that most of them were behind a CDN, probably with access restricted only for CloudFront! The last thing in my prepared arsenal is Brute-forcing bucket names! Active 1 year, 1 month ago.
Viewed times. So I am curious about the plot of S3 performance based on the number of buckets. Improve this question. Mohammad Moghads Mohammad Moghads 13 2 2 bronze badges. But when try to find a object it calculate hash of object's key.
Or maybe it wouldn't. I'd trust amazon documentation. They built the thing, they know how it works and scales. Add a comment. Active Oldest Votes. Improve this answer. John Rotenstein John Rotenstein k 17 17 gold badges silver badges bronze badges. The question was about the number of buckets not size of a bucket. As an example the performance of buckets is equal to the state with buckets?
The number of buckets assigned to a single account will have no impact on anything.
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