95 lines
2.2 KiB
Markdown
95 lines
2.2 KiB
Markdown
# AWS S3 Enumeration
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## Usage
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* [Regions](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-regions-availability-zones.html#concepts-available-segions)
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* `--region`
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### Simple Storage Service (S3)
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* [S3](https://aws.amazon.com/s3/)
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* Methods of access control are as follows
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* [Bucket policies](https://docs.aws.amazon.com/AmazonS3/latest/userguide/bucket-policies.html)
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* [S3 ACL](https://docs.aws.amazon.com/AmazonS3/latest/userguide/managing-acls.html)
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* Scheme is
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```sh
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http://<bucketname>.s3.amazonaws.com/file.name
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```
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or
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```sh
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http://s3.amazonaws.com/BUCKETNAME/FILENAME.ext
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```
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* __List content of public bucket via__
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```sh
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aws s3 ls s3://<bucketname>/ --no-sign-request
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```
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* Download via `curl`, `wget` or `s3` cli via
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```sh
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aws s3 cp s3://<bucketname>/foo_public.xml . --no-sign-request
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```
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#### ACL
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* `Anyone`, just `curl`
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* `AuthenticatedUsers`, `s3` cli with aws key
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## IAM
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* Not necessarily used by s3
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* Access key ID, starts with `AKIA` + 20 chars
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* Secret access key
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* Session token, `ASIA` + sessionToken
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* Add credentials to profile via
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```sh
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aws configure --profile PROFILENAME
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```
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* Config and credentials is stored at `~/.aws`
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* Sanity test profile via
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```sh
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aws s3 ls --profile PROFILENAME
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```
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* Find account ID to an access key
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```sh
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aws sts get-access-key-info --access-key-id AKIAEXAMPLE
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```
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* Find username to an access key
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```sh
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aws sts get-caller-identity --profile PROFILENAME
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```
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* Listing EC2 instances of an account
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```sh
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aws ec2 describe-instances --output text --profile PROFILENAME
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```
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* aws ec2 describe-instances --output text --profile PROFILENAME
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```sh
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aws ec2 describe-instances --output text --profile PROFILENAME
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```
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* In another region
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```sh
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aws ec2 describe-instances --output text --region us-east-1 --profile PROFILENAME
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```
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### AWS ARN
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* Unique ID is create via the following scheme
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```sh
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arn:aws:<service>:<region>:<account_id>:<resource_type>/<resource_name>
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```
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### Secrets
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```sh
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aws secretsmanager help
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aws secretsmanager list-secrets
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ws secretsmanager get-secret-value --secret-id <Name> --region <region>
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```
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## Check Permissions on S3 Bucket
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* Do a `PUT` method to see if the bucket may be writeable to upload a file via
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```sh
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curl -vvv -X PUT $BUCKET_URL --data "Test of write permissions"
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```
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