Introduction
In this installment, we will focus on one of the most prevalent high-value targets within a cluster: the Kubernetes Dashboard. While these interfaces provide significant visibility for administrators, they often become the “Achilles’ heel” of an environment when misconfigured with excessive privileges.
This video demo goes beyond theory to show a live attack path that transforms a minor configuration oversight into a full-blown cluster takeover.
Video Highlights
Discovery & Access: Identifying exposed Dashboards and bypassing weak authentication barriers.
The Manual Secret Injection: Demonstrating how to use the Dashboard’s own “Create” interface to force the generation of a Legacy Service Account Token.
Token Harvesting: Extracting long-lived JWT tokens directly from the browser to establish persistence.
Remote Cluster Takeover: Configuring an external Kali box with harvested credentials to achieve full kubectl control from outside the network.
Privilege Escalation Validation: Used auth can-i to confirm the transition from a service-level account to Full Cluster Admin.
Post-Exploitation & C2: Deploying a malicious pod to the cluster to execute a Sliver beacon, bridging the gap between Kubernetes orchestration and traditional Command & Control (C2).
Video Walkthrough
RBT Security’s Kubernetes Lab Infrastructure
Conclusion
The exploitation of misconfigured Kubernetes Dashboards represents a critical failure point in cluster security. By demonstrating how a simple interface can be leveraged to harvest “god-mode” credentials, we highlight the dangerous gap between operational convenience and infrastructure hardening. We view these offensive maneuvers as the ultimate diagnostic tool. Transforming a “how to hack” scenario into a “how to defend” roadmap allows us to move beyond reactive patching and toward a resilient, Least Privilege architecture. Securing the control plane isn’t just about closing ports; it’s about eliminating the long-lived, high-privilege secrets that attackers depend on for persistence.
References
- Kubernetes Service Accounts: https://kubernetes.io/docs/concepts/security/service-accounts/
- Kubernetes RBAC Good Practices: https://kubernetes.io/docs/concepts/security/rbac-good-practices/
- Managing Service Account Tokens: https://kubernetes.io/docs/reference/access-authn-authz/service-accounts-admin/
- OWASP Kubernetes Security Cheat Sheet:https://cheatsheetseries.owasp.org/cheatsheets/Kubernetes_Security_Cheat_Sheet.html
- MITRE ATT&CK for Kubernetes: https://attack.mitre.org/matrices/enterprise/cloud/containers/
Christian Ramirez (a.k.a. Polunchis) is a seasoned cybersecurity professional with nearly two decades of hands-on experience in offensive security and adversarial simulations. He specializes in web application, cloud (AWS, Azure, GCP), and infrastructure penetration testing, having led numerous high-impact engagements that strengthened organizational resilience worldwide.
His expertise spans red and purple team assessments, exploit and malware development, advanced evasion techniques, and bypassing AV/EDR defenses. Over his career, Christian Ramirez has tested diverse environments including web services, APIs (SOAP & REST), thick clients, wireless networks, SAP ERP systems, and ATMs.
Renowned for delivering realistic adversary emulation and comprehensive threat analysis, Christian Ramirez empowers organizations to detect, defend, and respond to advanced threats effectively. Blending technical precision with strategic insight, he helps teams uncover vulnerabilities and elevate overall security maturity.
When not dissecting systems or leading red team operations, Christian Ramirez shares his knowledge through research, thought leadership, and collaborative defense initiatives that push the boundaries of modern cybersecurity.