Testing Websocket API Security

Testing Websocket Api Security

Overview

Cybersecurity skill for testing websocket api security. Follows industry best practices and security standards.

When to Use

Trigger phrases:

• "testing websocket api security"

• "Tests WebSocket API implementations for security vulnerabilities including missi"

• Assessing real-time communication APIs that use WebSocket (ws://) or Secure WebSocket (wss://) protocols

• Testing for Cross-Site WebSocket Hijacking (CSWSH) where an attacker's page connects to a legitimate WebSocket server

• Evaluating authentication and authorization enforcement on WebSocket connections and messages

• Testing input validation on WebSocket message payloads for injection vulnerabilities

• Assessing WebSocket implementations for denial-of-service through message flooding or oversized frames

Do not use without written authorization. WebSocket testing may disrupt real-time services and affect other connected users.

When NOT to Use

• When you lack proper authorization for testing
• For production systems without change management
• When the task requires legal or compliance expertise beyond technical scope

Prerequisites

• Written authorization specifying the WebSocket endpoint and testing scope
• Burp Suite Professional with WebSocket interception capability
• Python 3.10+ with websockets and asyncio libraries
• Browser developer tools for observing WebSocket handshakes and frames
• wscat CLI tool for manual WebSocket interaction: npm install -g wscat
• Knowledge of the WebSocket subprotocol in use (JSON-RPC, STOMP, custom)

Workflow

# Example: IOC detection
import re

IOC_PATTERNS = {
    "ip": r"\b(?:\d{1,3}\.){3}\d{1,3}\b",
    "domain": r"\b[a-z0-9-]+\.[a-z]{2,}\b",
    "hash_md5": r"\b[a-f0-9]{32}\b",
    "hash_sha256": r"\b[a-f0-9]{64}\b",
}

def extract_iocs(text: str) -> dict:
    return {k: re.findall(v, text) for k, v in IOC_PATTERNS.items()}

1. Reconnaissance — Gather information about the target related to websocket api security. Identify attack surface.
2. Vulnerability Identification — Enumerate potential websocket api security weaknesses using automated and manual techniques.
3. Exploit Development/Selection — Choose or develop exploits targeting identified websocket api security vulnerabilities.
4. Execution — Execute the websocket api security test in a controlled manner with proper authorization.
5. Post-Exploitation — Document the impact and extent of successful exploitation.
6. Reporting — Write detailed findings with reproduction steps, impact assessment, and remediation guidance.

Tools

• Vulnerability Scanner — Automated weakness identification
• Exploitation Framework — Controlled exploitation testing
• Reporting Tool — Findings documentation and tracking

Process

1. Reconnaissance — Gather target information, identify attack surface, enumerate services
2. Analysis/Exploitation — Execute the technique, analyze results, document findings
3. Reporting — Document IOCs, write findings, provide remediation recommendations

Verification

• All websocket api security procedures executed completely and documented
• Findings validated against multiple data sources
• False positives identified and filtered
• Results documented with evidence and timestamps
• Recommendations provided with risk-based prioritization

Anti-Rationalization Table