# AWS - EC2 Unauthenticated Enum

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## EC2 & Related Services

Check in this page more information about this:

{{#ref}}
../../aws-services/aws-ec2-ebs-elb-ssm-vpc-and-vpn-enum/
{{#endref}}

### Public Ports

It's possible to expose the **any port of the virtual machines to the internet**. Depending on **what is running** in the exposed the port an attacker could abuse it.

#### SSRF

{{#ref}}
https://book.hacktricks.wiki/en/pentesting-web/ssrf-server-side-request-forgery/cloud-ssrf.html
{{#endref}}

### Public AMIs & EBS Snapshots

AWS allows to **give access to anyone to download AMIs and Snapshots**. You can list these resources very easily from your own account:

```bash
# Public AMIs
aws ec2 describe-images --executable-users all

## Search AMI by ownerID
aws ec2 describe-images --executable-users all --query 'Images[?contains(ImageLocation, `967541184254/`) == `true`]'

## Search AMI by substr ("shared" in the example)
aws ec2 describe-images --executable-users all --query 'Images[?contains(ImageLocation, `shared`) == `true`]'

# Public EBS snapshots (hard-drive copies)
aws ec2 describe-snapshots --restorable-by-user-ids all
aws ec2 describe-snapshots --restorable-by-user-ids all | jq '.Snapshots[] | select(.OwnerId == "099720109477")'
```

If you find a snapshot that is restorable by anyone, make sure to check [AWS - EBS Snapshot Dump](https://cloud.hacktricks.wiki/en/pentesting-cloud/aws-security/aws-post-exploitation/aws-ec2-ebs-ssm-and-vpc-post-exploitation/index.html#ebs-snapshot-dump) for directions on downloading and looting the snapshot.

#### Public URL template

```bash
# EC2
ec2-{ip-seperated}.compute-1.amazonaws.com
# ELB
http://{user_provided}-{random_id}.{region}.elb.amazonaws.com:80/443
https://{user_provided}-{random_id}.{region}.elb.amazonaws.com
```

### Enumerate EC2 instances with public IP

```bash
aws ec2 describe-instances --query "Reservations[].Instances[?PublicIpAddress!=null].PublicIpAddress" --output text
```

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