├── .github └── workflows │ └── ci.yml ├── .gitignore ├── .idea ├── .gitignore ├── .name ├── compiler.xml ├── gradle.xml ├── jarRepositories.xml ├── misc.xml └── vcs.xml ├── LICENSE ├── README.md ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ └── main │ ├── AndroidManifest.xml │ ├── java │ └── tech │ │ └── httptoolkit │ │ └── pinning_demo │ │ └── MainActivity.kt │ └── res │ ├── drawable-hdpi │ ├── baseline_cancel_black_18.png │ ├── baseline_cancel_black_20.png │ ├── baseline_cancel_black_24.png │ ├── baseline_cancel_black_36.png │ ├── baseline_cancel_black_48.png │ ├── baseline_check_circle_black_18.png │ ├── baseline_check_circle_black_20.png │ ├── baseline_check_circle_black_24.png │ ├── baseline_check_circle_black_36.png │ └── baseline_check_circle_black_48.png │ ├── drawable-mdpi │ ├── baseline_cancel_black_18.png │ ├── baseline_cancel_black_20.png │ ├── baseline_cancel_black_24.png │ ├── baseline_cancel_black_36.png │ ├── baseline_cancel_black_48.png │ ├── baseline_check_circle_black_18.png │ ├── baseline_check_circle_black_20.png │ ├── baseline_check_circle_black_24.png │ ├── baseline_check_circle_black_36.png │ └── baseline_check_circle_black_48.png │ ├── drawable-v24 │ └── ic_launcher_foreground.xml │ ├── drawable-xhdpi │ ├── baseline_cancel_black_18.png │ ├── baseline_cancel_black_20.png │ ├── baseline_cancel_black_24.png │ ├── baseline_cancel_black_36.png │ ├── baseline_cancel_black_48.png │ ├── baseline_check_circle_black_18.png │ ├── baseline_check_circle_black_20.png │ ├── baseline_check_circle_black_24.png │ ├── baseline_check_circle_black_36.png │ └── baseline_check_circle_black_48.png │ ├── drawable-xxhdpi │ ├── baseline_cancel_black_18.png │ ├── baseline_cancel_black_20.png │ ├── baseline_cancel_black_24.png │ ├── baseline_cancel_black_36.png │ ├── baseline_cancel_black_48.png │ ├── baseline_check_circle_black_18.png │ ├── baseline_check_circle_black_20.png │ ├── baseline_check_circle_black_24.png │ ├── baseline_check_circle_black_36.png │ └── baseline_check_circle_black_48.png │ ├── drawable-xxxhdpi │ ├── baseline_cancel_black_18.png │ ├── baseline_cancel_black_20.png │ ├── baseline_cancel_black_24.png │ ├── baseline_cancel_black_36.png │ ├── baseline_cancel_black_48.png │ ├── baseline_check_circle_black_18.png │ ├── baseline_check_circle_black_20.png │ ├── baseline_check_circle_black_24.png │ ├── baseline_check_circle_black_36.png │ └── baseline_check_circle_black_48.png │ ├── drawable │ ├── baseline_cancel_18.xml │ ├── baseline_cancel_24.xml │ ├── baseline_cancel_36.xml │ ├── baseline_check_circle_24.xml │ └── ic_launcher_background.xml │ ├── layout │ └── activity_main.xml │ ├── mipmap-anydpi-v26 │ ├── ic_launcher.xml │ └── ic_launcher_round.xml │ ├── mipmap-hdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-mdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── mipmap-xxxhdpi │ ├── ic_launcher.png │ └── ic_launcher_round.png │ ├── raw │ ├── digicert_ca.pem │ └── isrgrootx1.pem │ ├── values-night │ └── themes.xml │ ├── values │ ├── colors.xml │ ├── strings.xml │ └── themes.xml │ └── xml │ └── network_security_config.xml ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── screenshot.png └── settings.gradle /.github/workflows/ci.yml: -------------------------------------------------------------------------------- 1 | name: CI 2 | on: [push, pull_request] 3 | jobs: 4 | build: 5 | name: Build 6 | runs-on: ubuntu-22.04 7 | steps: 8 | - uses: actions/checkout@v2 9 | 10 | - name: Set up JDK 1.8 11 | uses: actions/setup-java@v1 12 | with: 13 | java-version: 1.8 14 | 15 | - name: Setup Android SDK 16 | uses: android-actions/setup-android@v2 17 | 18 | - name: Build release 19 | run: ./gradlew assembleRelease 20 | 21 | - uses: r0adkll/sign-android-release@v1 22 | name: Sign app APK 23 | # ID used to access action output 24 | id: sign_app 25 | with: 26 | releaseDirectory: app/build/outputs/apk/release 27 | signingKeyBase64: ${{ secrets.SIGNING_KEY }} 28 | alias: ${{ secrets.ALIAS }} 29 | keyStorePassword: ${{ secrets.KEY_STORE_PASSWORD }} 30 | keyPassword: ${{ secrets.KEY_PASSWORD }} 31 | env: 32 | # override default build-tools version (29.0.3) -- optional 33 | BUILD_TOOLS_VERSION: "30.0.2" 34 | 35 | - uses: actions/upload-artifact@v2 36 | with: 37 | name: Signed app bundle 38 | path: ${{steps.sign_app.outputs.signedReleaseFile}} 39 | if-no-files-found: error 40 | 41 | deploy: 42 | name: Deploy to GitHub Releases 43 | needs: build 44 | runs-on: ubuntu-22.04 45 | if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') 46 | steps: 47 | - name: Get the APK 48 | id: get_apk 49 | uses: actions/download-artifact@v2 50 | with: 51 | name: Signed app bundle 52 | 53 | - name: Publish the APK to GitHub Releases 54 | uses: svenstaro/upload-release-action@v2 55 | with: 56 | prerelease: true 57 | asset_name: pinning-signed.apk 58 | file: ${{ steps.get_apk.outputs.download-path }}/app-release-unsigned-signed.apk 59 | tag: ${{ github.ref }} 60 | repo_token: ${{ secrets.GITHUB_TOKEN }} 61 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | local.properties 16 | -------------------------------------------------------------------------------- /.idea/.gitignore: -------------------------------------------------------------------------------- 1 | # Default ignored files 2 | /shelf/ 3 | /workspace.xml 4 | -------------------------------------------------------------------------------- /.idea/.name: -------------------------------------------------------------------------------- 1 | SSL Pinning Demo -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 21 | 22 | -------------------------------------------------------------------------------- /.idea/jarRepositories.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 9 | 10 | 14 | 15 | 19 | 20 | 24 | 25 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # android-ssl-pinning-demo 2 | 3 | > _Part of [HTTP Toolkit](https://httptoolkit.tech): powerful tools for building, testing & debugging HTTP(S)_ 4 | 5 | A tiny demo app using SSL pinning to block HTTPS MitM interception. 6 | 7 | ## Try it out 8 | 9 | You can either clone this repo and build it yourself in Android Studio, or download the APK from the [releases page](https://github.com/httptoolkit/android-ssl-pinning-demo/releases) and install it with `adb install android-ssl-pinning-demo.apk`. 10 | 11 | Pressing each button will send an HTTP request with the corresponding configuration. The buttons are purple initially or while a request is in flight, and then turn green or red (with corresponding icons, and an error message popped up for failures) when the request succeeds/fails. 12 | 13 | On a normal unintercepted device, every button should always immediately go green. On a device whose HTTPS is being intercepted (e.g. by [HTTP Toolkit](https://httptoolkit.tech/android)) all except the first button will go red, unless you've used Frida or similar to disable certificate pinning. 14 | 15 | A screenshot of the app in action -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | id 'com.android.application' 3 | id 'kotlin-android' 4 | } 5 | 6 | android { 7 | compileSdkVersion 30 8 | buildToolsVersion "30.0.2" 9 | 10 | defaultConfig { 11 | applicationId "tech.httptoolkit.pinning_demo" 12 | minSdkVersion 24 13 | targetSdkVersion 30 14 | versionCode 4 15 | versionName "1.2.1" 16 | 17 | testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" 18 | } 19 | 20 | buildTypes { 21 | release { 22 | minifyEnabled false 23 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 24 | } 25 | } 26 | compileOptions { 27 | sourceCompatibility JavaVersion.VERSION_1_8 28 | targetCompatibility JavaVersion.VERSION_1_8 29 | } 30 | kotlinOptions { 31 | jvmTarget = '1.8' 32 | } 33 | } 34 | 35 | dependencies { 36 | implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version" 37 | implementation "org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.7" 38 | implementation "org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.7" 39 | implementation 'androidx.core:core-ktx:1.3.2' 40 | implementation 'androidx.appcompat:appcompat:1.2.0' 41 | implementation 'com.google.android.material:material:1.3.0' 42 | implementation 'androidx.constraintlayout:constraintlayout:2.0.4' 43 | 44 | implementation 'com.squareup.okhttp3:okhttp:4.5.0' 45 | implementation 'com.android.volley:volley:1.2.0' 46 | implementation 'com.datatheorem.android.trustkit:trustkit:1.1.3' 47 | implementation 'androidx.preference:preference-ktx:1.1.1' 48 | } -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 6 | 7 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | -------------------------------------------------------------------------------- /app/src/main/java/tech/httptoolkit/pinning_demo/MainActivity.kt: -------------------------------------------------------------------------------- 1 | package tech.httptoolkit.pinning_demo 2 | 3 | import android.graphics.drawable.Drawable 4 | import android.os.Bundle 5 | import android.view.View 6 | import android.widget.Button 7 | import android.widget.Toast 8 | import androidx.annotation.IdRes 9 | import androidx.appcompat.app.AppCompatActivity 10 | import androidx.core.content.ContextCompat 11 | import com.android.volley.RequestQueue 12 | import com.android.volley.toolbox.* 13 | import com.datatheorem.android.trustkit.TrustKit 14 | import kotlinx.coroutines.* 15 | import okhttp3.CertificatePinner 16 | import okhttp3.OkHttpClient 17 | import okhttp3.Request 18 | import okio.ByteString.Companion.decodeBase64 19 | import okio.ByteString.Companion.toByteString 20 | import java.io.BufferedInputStream 21 | import java.io.BufferedReader 22 | import java.io.InputStreamReader 23 | import java.io.PrintWriter 24 | import java.net.URL 25 | import java.security.KeyStore 26 | import java.security.cert.Certificate 27 | import java.security.cert.CertificateFactory 28 | import java.security.cert.X509Certificate 29 | import javax.net.ssl.* 30 | 31 | const val ROOT_SHA256 = "w8inyQIV/O8EqPDCXEpt7G3k0N4201/zONsbxcakRrg=" 32 | 33 | class MainActivity : AppCompatActivity() { 34 | override fun onCreate(savedInstanceState: Bundle?) { 35 | super.onCreate(savedInstanceState) 36 | setContentView(R.layout.activity_main) 37 | 38 | TrustKit.initializeWithNetworkSecurityConfiguration(this@MainActivity) 39 | } 40 | 41 | private fun onStart(@IdRes id: Int) { 42 | GlobalScope.launch(Dispatchers.Main) { 43 | val button = findViewById