Practical Mobile Traffic Interception

[carlospolop]

🤖 Automated Content Update

This PR was automatically generated by the HackTricks News Bot based on a technical blog post.

📝 Source Information

• Blog URL: https://medium.com/@justmobilesec/practical-mobile-traffic-interception-1481e33d974e
• Blog Title: Practical Mobile Traffic Interception
• Suggested Section: Mobile Pentesting -> Android Applications Pentesting (SSL pinning bypass / traffic interception) and Mobile Pentesting -> iOS Pentesting (SSL pinning bypass / MITM); optionally add a subsection/note for Flutter apps ignoring system proxy + using socket-level redirection (frida4burp)

🎯 Content Summary

The provided “blog content” appears blocked by Medium’s anti-bot page (“Enable JavaScript and cookies to continue”), so the original article text is not available to verify. Therefore, this summary only restructures and clarifies the content that was already present in the provided draft, without adding new claims.

This write-up is a practical playbook for intercepting modern mobile app traffic (Android + iOS) when the classic approach (set device proxy + install proxy CA + confirm browser traf...

🔧 Technical Details

Modern mobile MITM often fails because (1) newer Android versions restrict system trust-store modification and apps may ignore user CAs, (2) apps implement SSL pinning/custom trust logic, and (3) some frameworks (notably Flutter) bypass OS proxy settings entirely, yielding “no traffic” even when proxy+CA are configured. The practical approach is to diagnose whether the failure is trust, pinning, or routing, then apply the matching fix: (a) restore trust (system CA injection or modules that promote user certs), (b) bypass pinning via runtime hooks (Frida/Codeshare or tools like Objection/SSL KillSwitch on iOS), and (c) force routing through the proxy using socket-level redirection (e.g., frida4burp), potentially chaining redirection with certificate injection and unpinning for pinned Flutter apps.

🤖 Agent Actions

Updated mobile-pentesting/android-app-pentesting/flutter.md with a practical MITM workflow extension: added socket-level redirection guidance (e.g., frida4burp) to force Flutter apps that ignore OS proxies through Burp, integrated it into the TLS bypass steps, clarified Android/iOS usage, and appended the blog as a reference.

---

This PR was automatically created by the HackTricks Feed Bot. Please review the changes carefully before merging.

[carlospolop]

🔗 Additional Context

Original Blog Post: https://medium.com/@justmobilesec/practical-mobile-traffic-interception-1481e33d974e

Content Categories: Based on the analysis, this content was categorized under "Mobile Pentesting -> Android Applications Pentesting (SSL pinning bypass / traffic interception) and Mobile Pentesting -> iOS Pentesting (SSL pinning bypass / MITM); optionally add a subsection/note for Flutter apps ignoring system proxy + using socket-level redirection (frida4burp)".

Repository Maintenance:

• MD Files Formatting: 944 files processed

Review Notes:

• This content was automatically processed and may require human review for accuracy
• Check that the placement within the repository structure is appropriate
• Verify that all technical details are correct and up-to-date
• All .md files have been checked for proper formatting (headers, includes, etc.)

Bot Version: HackTricks News Bot v1.0