performing-mobile-app-certificate-pinning-bypass

name	performing-mobile-app-certificate-pinning-bypass
description	Use when bypasses SSL/TLS certificate pinning implementations in Android and iOS applications to enable traffic interception during authorized security assessments. Covers OkHttp, TrustManager, NSURLSession, and third-party pinning library bypass techniques using Frida, Objection, and custom scripts. Activates for requests involving certificate pinning bypass, SSL pinning defeat, mobile TLS interception, or proxy-resistant app testing.
domain	cybersecurity
tags	["mobile-security","android","ios","certificate-pinning","frida","penetration-testing"]
subdomain	mobile-security
author	oyi77
version	1.0.0
license	Apache-2.0
nist_csf	["PR.PS-01","PR.AA-05","ID.RA-01","DE.CM-09"]

Performing Mobile App Certificate Pinning Bypass

Overview

Cybersecurity skill for performing mobile app certificate pinning bypass. Follows industry best practices and security standards.

When to Use

Trigger phrases:

• "performing mobile app certificate pinning bypass"
• "Bypasses SSL/TLS certificate pinning implementations in Android and iOS applicat"

Use this skill when:

• Mobile app refuses connections through a proxy due to certificate pinning
• Performing authorized security testing requiring HTTPS traffic interception
• Assessing the strength and bypass difficulty of pinning implementations
• Evaluating defense-in-depth of mobile app network security

Do not use to bypass pinning on apps without explicit testing authorization.

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

• Burp Suite configured as proxy with listener on all interfaces
• Rooted Android device or jailbroken iOS device
• Frida server running on target device
• Objection installed (pip install objection)
• Target app installed and reproducing the pinning behavior

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. Plan Operations — Define objectives, scope, and success criteria for mobile app certificate pinning bypass operations.