f

Author: carlospolop

src/mobile-pentesting/android-app-pentesting/android-anti-instrumentation-and-ssl-pinning-bypass.md

@@ -279,12 +279,31 @@ objection --gadget com.example.app explore
 apk-mitm app.apk
 ```
 
-## Tips & caveats
+## Universal proxy forcing + TLS unpinning (HTTP Toolkit Frida hooks)
 
-- Prefer attaching late over spawning when apps crash at launch
-- Some detections re‑run in critical flows (e.g., payment, auth) — keep hooks active during navigation
-- Mix static and dynamic: string hunt in Jadx to shortlist classes; then hook methods to verify at runtime
-- Hardened apps may use packers and native TLS pinning — expect to reverse native code
+Modern apps often ignore system proxies and enforce multiple layers of pinning (Java + native), making traffic capture painful even with user/system CAs installed. A practical approach is to combine universal TLS unpinning with proxy forcing via ready-made Frida hooks, and route everything through mitmproxy/Burp.
+
+Workflow
+- Run mitmproxy on your host (or Burp). Ensure the device can reach the host IP/port.
+- Load HTTP Toolkit’s consolidated Frida hooks to both unpin TLS and force proxy usage across common stacks (OkHttp/OkHttp3, HttpsURLConnection, Conscrypt, WebView, etc.). This bypasses CertificatePinner/TrustManager checks and overrides proxy selectors, so traffic is always sent via your proxy even if the app explicitly disables proxies.
+- Start the target app with Frida and the hook script, and capture requests in mitmproxy.
+
+Example
+```bash
+# Device connected via ADB or over network (-U)
+# See the repo for the exact script names & options
+frida -U -f com.vendor.app \
+  -l ./android-unpinning-with-proxy.js \
+  --no-pause
+
+# mitmproxy listening locally
+mitmproxy -p 8080
+```
+
+Notes
+- Combine with a system-wide proxy via `adb shell settings put global http_proxy <host>:<port>` when possible. The Frida hooks will enforce proxy use even when apps bypass global settings.
+- This technique is ideal when you need to MITM mobile-to-IoT onboarding flows where pinning/proxy avoidance is common.
+- Hooks: https://github.com/httptoolkit/frida-interception-and-unpinning
 
 ## References