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As organizations increasingly migrate to Google Cloud Platform (GCP), misconfigurations, weak IAM policies, and unprotected APIs create significant attack surfaces. This guide delves into Google Cloud penetration testing techniques, covering enumeration, privilege escalation, and defensive mitigations.
Key GCP Pentesting Techniques
1️⃣ GCP Recon & Enumeration
- Discover publicly exposed resources:
gcloud asset search-all-resources
- List IAM roles & permissions:
gcloud projects get-iam-policy <project-id>
2️⃣ Identifying Weak IAM Policies
- Check for overly permissive roles:
gcloud iam roles describe <role-name>
- Privilege Escalation via Service Accounts:
gcloud auth activate-service-account --key-file=service-key.json
3️⃣ Cloud Storage Attacks
- Find publicly accessible buckets:
gcloud storage buckets list
- Download unprotected sensitive files:
gsutil cp gs://<bucket-name>/sensitive-data.txt .
4️⃣ Compute Engine Exploitation
- Enumerate running VM instances:
gcloud compute instances list
- SSH into instances with weak permissions:
gcloud compute ssh <instance-name> --zone <zone>
5️⃣ Exploiting Cloud Functions & APIs
- Find misconfigured APIs that expose sensitive data:
gcloud functions list --format=json
- Invoke functions with weak authentication:
gcloud functions call <function-name>
Defensive Mitigations
- Restrict IAM roles to least privilege access.
- Harden API security with authentication & authorization checks.
- Monitor bucket permissions and disable public access where unnecessary.
- Enable logging & auditing to detect abnormal activities.
You Should Know:
Linux Commands for Cloud Security
- Check open ports on a server:
nmap -p- <target-ip>
- Monitor network traffic:
tcpdump -i eth0
- Audit file permissions:
find / -type f -perm -o+w
Windows Commands for Cloud Security
- Check active connections:
netstat -ano
- List running processes:
tasklist
- Audit user permissions:
icacls <directory-path>
What Undercode Say:
Google Cloud Platform (GCP) offers robust infrastructure, but misconfigurations can lead to severe security breaches. Red teamers must focus on enumeration, privilege escalation, and exploiting weak IAM policies. Defensive strategies, such as least privilege access and logging, are critical to securing cloud environments.
Expected Output:
- GCP Enumeration:
gcloud asset search-all-resources
- IAM Policy Audit:
gcloud projects get-iam-policy <project-id>
- Cloud Storage Security:
gcloud storage buckets list
- Compute Engine Exploitation:
gcloud compute instances list
- Cloud Function Exploitation:
gcloud functions list --format=json
By mastering these techniques and commands, you can effectively secure or exploit GCP environments.
References:
Reported By: Shihab Hossen – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
