Mr.SIP Pro: Advanced VoIP Security Testing Toolkit

Introduction

VoIP infrastructure is often treated as utility — not attack surface.
Yet, in modern enterprises, SIP-based systems can expose trust assumptions, weak verification paths, and exploitable telephony logic.

Mr.SIP Pro is a professional VoIP security testing toolkit built by red teamers, for red teamers.
It enables adversary simulation against telecom infrastructure, helping security teams uncover what traditional scanners miss.

Core Capabilities

• SIP Network Discovery & Enumeration

Identify SIP servers, PBXs, proxies, and softswitches. Enumerate extensions and observe metadata in passive/active modes.

• Vulnerability Scanning & Exploitation

Scan for known SIP vulnerabilities and misconfigurations. Exploit issues using protocol-compliant payloads.

• SIP Fuzzing & Attack Simulation

Launch malformed messages and simulate real-world adversary behavior including registration flooding, spoofing, and call manipulation.

• RTP Media Analysis

Capture, decode, and manipulate RTP streams. Extract DTMF tones and assess tamper resilience.

• Modular Automation

Use scenario-based execution with reusable playbooks. Adaptive logic responds to SIP codes and session behavior.

Red Team Case Study

In a recent simulation for a financial services provider, Mr.SIP Pro was used to evaluate VoIP-based identity assumptions.

Key outcome:

The red team triggered password reset workflows using only spoofed caller IDs — no credentials, no phishing, no malware.

Findings included:

• Public-facing support lines accepting unauthenticated SIP calls
• Caller ID used as sole verification method
• No detection for spoofed or anomalous call patterns

Business Impact

The assessment demonstrated:

• End-to-end compromise chains initiated from VoIP systems
• Absence of segmentation between voice and IT networks
• Missed detection opportunities in SIP/RTP activity

Strategic Recommendations

• Treat VoIP as part of your core attack surface
• Introduce multi-step verification for phone-based workflows
• Monitor SIP signaling and media for abuse patterns
• Include telecom infrastructure in red team scopes and threat models

Lessons Learned

Caller ID is not authentication.

Even modern SIP environments suffer from legacy trust models and invisible logic flaws.
Mr.SIP Pro exposes these weaknesses through controlled, automated, and adversarial testing techniques.

Ready to Test the Hidden Layers of Your Telephony Stack?

VoIP infrastructure is often overlooked — until it becomes the breach vector.
Mr.SIP Pro equips red teams and security engineers to uncover what traditional tools miss in telecom environments.

Use Mr.SIP Pro to identify:

• Trust assumption flaws in call routing logic

• Caller ID–based authentication bypasses

• Voicemail and IVR exploitation vectors

• Privilege escalation via telecom misconfigurations

• Explore Mr.SIP Pro or Request a License

• Download the Mr.SIP Pro User Guide

• Book a VoIP Security Testing or Red Team Simulation

• Explore Our VoIP Security Assessment Services

Don’t let your phone system become your weakest link.