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Learn how to step into an attacker’s shoes and exploit public AWS resources in this hands-on workshop led by Eduard Agavriloae and Lucian P. at AWS Community Day Romania. The workshop covers vulnerable AWS services, misconfigurations, and real-world exploitation techniques.
Workshop Details:
- Date: April 11, 2024
- Price: Free with conference ticket ($24)
- Registration: Limited seats (10 left) – Register Here
You Should Know:
1. Identifying Public AWS Resources
Use AWS CLI to list publicly accessible S3 buckets:
aws s3 ls --no-sign-request
Check for open security groups:
aws ec2 describe-security-groups --filters "Name=ip-permission.cidr,Values=0.0.0.0/0" --query "SecurityGroups[*].{Name:GroupName,ID:GroupId}"
#### **2. Exploiting Misconfigured S3 Buckets**
If a bucket allows public write access, upload a malicious file:
aws s3 cp exploit.sh s3://vulnerable-bucket/ --no-sign-request
Download sensitive data if public read is enabled:
aws s3 sync s3://exposed-bucket/ ./local-dir --no-sign-request
3. Scanning for Open RDS & Lambda Functions
List publicly accessible RDS instances:
aws rds describe-db-instances --query "DBInstances[?PubliclyAccessible].{ID:DBInstanceIdentifier,Address:Endpoint.Address}"
Check Lambda function policies for public invocation:
aws lambda get-policy --function-name vulnerable-function
#### **4. Privilege Escalation via IAM Misconfigurations**
List IAM policies with overly permissive actions:
aws iam list-policies --query "Policies[?contains(PolicyName,'Admin') || contains(PolicyName,'FullAccess')].{Name:PolicyName,Arn:Arn}"
Exploit weak IAM roles:
aws sts assume-role --role-arn arn:aws:iam::123456789012:role/OverprivilegedRole --role-session-name ExploitSession
#### **5. Automating Recon with ScoutSuite**
Run an AWS security audit:
python3 -m pip install scoutsuite scout aws --access-keys --key-id AKIA... --secret-key ...
### **What Undercode Say:**
Publicly exposed AWS resources are a goldmine for attackers. Always:
– Restrict S3 bucket policies ("Effect": "Deny", "Principal": "*").
– Use AWS IAM Access Analyzer to detect unintended public access.
– Monitor AWS GuardDuty for anomalous API calls.
– Apply least privilege in IAM policies.
For defenders, hardening AWS requires:
<h1>Enable S3 bucket encryption</h1>
aws s3api put-bucket-encryption --bucket secure-bucket --server-side-encryption-configuration '{"Rules":[{"ApplyServerSideEncryptionByDefault":{"SSEAlgorithm":"AES256"}}]}'
<h1>Disable public RDS snapshots</h1> aws rds modify-db-snapshot-attribute --db-snapshot-id my-snapshot --attribute-name restore --values-to-remove all
**Expected Output:**
A hardened AWS environment with no unintended public resources, monitored via CloudTrail and Config.
Relevant URL: AWS Community Day Workshop Registration
References:
Reported By: Activity 7311788120759308289 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
