app抓包专题

一、系统代理-NO_PROXY

安卓开发时设置NO_PROXY，手机会不走系统代理，比如得物
绕过方式：
- 1、软件
  - Drony、SocksDroid（推荐）、ProxyDroid、Postern
  - 注意：需要关闭手机上的系统代理
- 2、frida Hook
```
Java.perform(function () {
    var Builder = Java.use("okhttp3.OkHttpClient$Builder");

    Builder.proxy.implementation = function (proxy) {
        var res = this.proxy(null);
        return res;
    }
});

// frida -U -f com.shizhuang.duapp -l  hook-proxy.js 
```
  注意：frida检测，对于得物，需要删除 libmsaoaidsec.so 文件
  适用于okhttp3发送请求，对于第三方包进行混淆，Hook方式无法绕过，需要借助于不会被混淆的系统包。

二、客户端证书校验

- 在客户端中预设证书信息
- 客户端向服务端发送请求，将服务端返回的证书信息（公钥）和客户端预设证书信息进行校验

SSL PINNING是Google官方推荐的校验方式，原理是在客户端（安卓APP）中预先设置好证书信息，握手时与服务端返回的证书进行比较。如果有这种客户端校验，那么charles等抓包工具，就无法抓包了。因为charles作为中间人返回给客户端的证书信息与原客户端预先设置的不一致，所以，客户端检测到，就拒绝发送请求了。

绕过方式：

1、frida Hook

frida_multiple_unpinning.js

/*  Android ssl certificate pinning bypass script for various methods
    by Maurizio Siddu

    Run with:
    frida -U -f [APP_ID] -l frida_multiple_unpinning.js --no-pause
    frida -UF -l frida_multiple_unpinning.js
*/

setTimeout(function() {
    Java.perform(function() {
        console.log('');
        console.log('======');
        console.log('[#] Android Bypass for various Certificate Pinning methods [#]');
        console.log('======');


        var X509TrustManager = Java.use('javax.net.ssl.X509TrustManager');
        var SSLContext = Java.use('javax.net.ssl.SSLContext');

        // TrustManager (Android < 7) //
        ////////////////////////////////
        var TrustManager = Java.registerClass({
            // Implement a custom TrustManager
            name: 'dev.asd.test.TrustManager',
            implements: [X509TrustManager],
            methods: {
                checkClientTrusted: function(chain, authType) {},
                checkServerTrusted: function(chain, authType) {},
                getAcceptedIssuers: function() {return []; }
            }
        });
        // Prepare the TrustManager array to pass to SSLContext.init()
        var TrustManagers = [TrustManager.$new()];
        // Get a handle on the init() on the SSLContext class
        var SSLContext_init = SSLContext.init.overload(
            '[Ljavax.net.ssl.KeyManager;', '[Ljavax.net.ssl.TrustManager;', 'java.security.SecureRandom');
        try {
            // Override the init method, specifying the custom TrustManager
            SSLContext_init.implementation = function(keyManager, trustManager, secureRandom) {
                console.log('[+] Bypassing Trustmanager (Android < 7) pinner');
                SSLContext_init.call(this, keyManager, TrustManagers, secureRandom);
            };
        } catch (err) {
            console.log('[-] TrustManager (Android < 7) pinner not found');
            //console.log(err);
        }




        // OkHTTPv3 (quadruple bypass) //
        /////////////////////////////////
        try {
            // Bypass OkHTTPv3 {1}
            var okhttp3_Activity_1 = Java.use('okhttp3.CertificatePinner');
            okhttp3_Activity_1.check.overload('java.lang.String', 'java.util.List').implementation = function(a, b) {
                console.log('[+] Bypassing OkHTTPv3 {1}: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] OkHTTPv3 {1} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass OkHTTPv3 {2}
            // This method of CertificatePinner.check is deprecated but could be found in some old Android apps
            var okhttp3_Activity_2 = Java.use('okhttp3.CertificatePinner');
            okhttp3_Activity_2.check.overload('java.lang.String', 'java.security.cert.Certificate').implementation = function(a, b) {
                console.log('[+] Bypassing OkHTTPv3 {2}: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] OkHTTPv3 {2} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass OkHTTPv3 {3}
            var okhttp3_Activity_3 = Java.use('okhttp3.CertificatePinner');
            okhttp3_Activity_3.check.overload('java.lang.String', '[Ljava.security.cert.Certificate;').implementation = function(a, b) {
                console.log('[+] Bypassing OkHTTPv3 {3}: ' + a);
                return;
            };
        } catch(err) {
            console.log('[-] OkHTTPv3 {3} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass OkHTTPv3 {4}
            var okhttp3_Activity_4 = Java.use('okhttp3.CertificatePinner');
            //okhttp3_Activity_4['check$okhttp'].implementation = function(a, b) {
            okhttp3_Activity_4.check$okhttp.overload('java.lang.String', 'kotlin.jvm.functions.Function0').implementation = function(a, b) {
                console.log('[+] Bypassing OkHTTPv3 {4}: ' + a);
                return;
            };
        } catch(err) {
            console.log('[-] OkHTTPv3 {4} pinner not found');
            //console.log(err);
        }




        // Trustkit (triple bypass) //
        //////////////////////////////
        try {
            // Bypass Trustkit {1}
            var trustkit_Activity_1 = Java.use('com.datatheorem.android.trustkit.pinning.OkHostnameVerifier');
            trustkit_Activity_1.verify.overload('java.lang.String', 'javax.net.ssl.SSLSession').implementation = function(a, b) {
                console.log('[+] Bypassing Trustkit {1}: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Trustkit {1} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass Trustkit {2}
            var trustkit_Activity_2 = Java.use('com.datatheorem.android.trustkit.pinning.OkHostnameVerifier');
            trustkit_Activity_2.verify.overload('java.lang.String', 'java.security.cert.X509Certificate').implementation = function(a, b) {
                console.log('[+] Bypassing Trustkit {2}: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Trustkit {2} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass Trustkit {3}
            var trustkit_PinningTrustManager = Java.use('com.datatheorem.android.trustkit.pinning.PinningTrustManager');
            trustkit_PinningTrustManager.checkServerTrusted.overload('[Ljava.security.cert.X509Certificate;', 'java.lang.String').implementation = function(chain, authType) {
                console.log('[+] Bypassing Trustkit {3}');
                //return;
            };
        } catch (err) {
            console.log('[-] Trustkit {3} pinner not found');
            //console.log(err);
        }




        // TrustManagerImpl (Android > 7) //
        ////////////////////////////////////
        try {
            // Bypass TrustManagerImpl (Android > 7) {1}
            var array_list = Java.use("java.util.ArrayList");
            var TrustManagerImpl_Activity_1 = Java.use('com.android.org.conscrypt.TrustManagerImpl');
            TrustManagerImpl_Activity_1.checkTrustedRecursive.implementation = function(certs, ocspData, tlsSctData, host, clientAuth, untrustedChain, trustAnchorChain, used) {
                console.log('[+] Bypassing TrustManagerImpl (Android > 7) checkTrustedRecursive check: '+ host);
                return array_list.$new();
            };
        } catch (err) {
            console.log('[-] TrustManagerImpl (Android > 7) checkTrustedRecursive check not found');
            //console.log(err);
        }
        try {
            // Bypass TrustManagerImpl (Android > 7) {2} (probably no more necessary)
            var TrustManagerImpl_Activity_2 = Java.use('com.android.org.conscrypt.TrustManagerImpl');
            TrustManagerImpl_Activity_2.verifyChain.implementation = function(untrustedChain, trustAnchorChain, host, clientAuth, ocspData, tlsSctData) {
                console.log('[+] Bypassing TrustManagerImpl (Android > 7) verifyChain check: ' + host);
                return untrustedChain;
            };
        } catch (err) {
            console.log('[-] TrustManagerImpl (Android > 7) verifyChain check not found');
            //console.log(err);
        }





        // Appcelerator Titanium PinningTrustManager //
        ///////////////////////////////////////////////
        try {
            var appcelerator_PinningTrustManager = Java.use('appcelerator.https.PinningTrustManager');
            appcelerator_PinningTrustManager.checkServerTrusted.implementation = function(chain, authType) {
                console.log('[+] Bypassing Appcelerator PinningTrustManager');
                return;
            };
        } catch (err) {
            console.log('[-] Appcelerator PinningTrustManager pinner not found');
            //console.log(err);
        }




        // Fabric PinningTrustManager //
        ////////////////////////////////
        try {
            var fabric_PinningTrustManager = Java.use('io.fabric.sdk.android.services.network.PinningTrustManager');
            fabric_PinningTrustManager.checkServerTrusted.implementation = function(chain, authType) {
                console.log('[+] Bypassing Fabric PinningTrustManager');
                return;
            };
        } catch (err) {
            console.log('[-] Fabric PinningTrustManager pinner not found');
            //console.log(err);
        }




        // OpenSSLSocketImpl Conscrypt (double bypass) //
        /////////////////////////////////////////////////
        try {
            var OpenSSLSocketImpl = Java.use('com.android.org.conscrypt.OpenSSLSocketImpl');
            OpenSSLSocketImpl.verifyCertificateChain.implementation = function(certRefs, JavaObject, authMethod) {
                console.log('[+] Bypassing OpenSSLSocketImpl Conscrypt {1}');
            };
        } catch (err) {
            console.log('[-] OpenSSLSocketImpl Conscrypt {1} pinner not found');
            //console.log(err);
        }
        try {
            var OpenSSLSocketImpl = Java.use('com.android.org.conscrypt.OpenSSLSocketImpl');
            OpenSSLSocketImpl.verifyCertificateChain.implementation = function(certChain, authMethod) {
                console.log('[+] Bypassing OpenSSLSocketImpl Conscrypt {2}');
            };
        } catch (err) {
            console.log('[-] OpenSSLSocketImpl Conscrypt {2} pinner not found');
            //console.log(err);
        }




        // OpenSSLEngineSocketImpl Conscrypt //
        ///////////////////////////////////////
        try {
            var OpenSSLEngineSocketImpl_Activity = Java.use('com.android.org.conscrypt.OpenSSLEngineSocketImpl');
            OpenSSLEngineSocketImpl_Activity.verifyCertificateChain.overload('[Ljava.lang.Long;', 'java.lang.String').implementation = function(a, b) {
                console.log('[+] Bypassing OpenSSLEngineSocketImpl Conscrypt: ' + b);
            };
        } catch (err) {
            console.log('[-] OpenSSLEngineSocketImpl Conscrypt pinner not found');
            //console.log(err);
        }




        // OpenSSLSocketImpl Apache Harmony //
        //////////////////////////////////////
        try {
            var OpenSSLSocketImpl_Harmony = Java.use('org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl');
            OpenSSLSocketImpl_Harmony.verifyCertificateChain.implementation = function(asn1DerEncodedCertificateChain, authMethod) {
                console.log('[+] Bypassing OpenSSLSocketImpl Apache Harmony');
            };
        } catch (err) {
            console.log('[-] OpenSSLSocketImpl Apache Harmony pinner not found');
            //console.log(err);
        }




        // PhoneGap sslCertificateChecker //
        ////////////////////////////////////
        try {
            var phonegap_Activity = Java.use('nl.xservices.plugins.sslCertificateChecker');
            phonegap_Activity.execute.overload('java.lang.String', 'org.json.JSONArray', 'org.apache.cordova.CallbackContext').implementation = function(a, b, c) {
                console.log('[+] Bypassing PhoneGap sslCertificateChecker: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] PhoneGap sslCertificateChecker pinner not found');
            //console.log(err);
        }




        // IBM MobileFirst pinTrustedCertificatePublicKey (double bypass) //
        ////////////////////////////////////////////////////////////////////
        try {
            // Bypass IBM MobileFirst {1}
            var WLClient_Activity_1 = Java.use('com.worklight.wlclient.api.WLClient');
            WLClient_Activity_1.getInstance().pinTrustedCertificatePublicKey.overload('java.lang.String').implementation = function(cert) {
                console.log('[+] Bypassing IBM MobileFirst pinTrustedCertificatePublicKey {1}: ' + cert);
                return;
            };
            } catch (err) {
            console.log('[-] IBM MobileFirst pinTrustedCertificatePublicKey {1} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass IBM MobileFirst {2}
            var WLClient_Activity_2 = Java.use('com.worklight.wlclient.api.WLClient');
            WLClient_Activity_2.getInstance().pinTrustedCertificatePublicKey.overload('[Ljava.lang.String;').implementation = function(cert) {
                console.log('[+] Bypassing IBM MobileFirst pinTrustedCertificatePublicKey {2}: ' + cert);
                return;
            };
        } catch (err) {
            console.log('[-] IBM MobileFirst pinTrustedCertificatePublicKey {2} pinner not found');
            //console.log(err);
        }




        // IBM WorkLight (ancestor of MobileFirst) HostNameVerifierWithCertificatePinning (quadruple bypass) //
        ///////////////////////////////////////////////////////////////////////////////////////////////////////
        try {
            // Bypass IBM WorkLight {1}
            var worklight_Activity_1 = Java.use('com.worklight.wlclient.certificatepinning.HostNameVerifierWithCertificatePinning');
            worklight_Activity_1.verify.overload('java.lang.String', 'javax.net.ssl.SSLSocket').implementation = function(a, b) {
                console.log('[+] Bypassing IBM WorkLight HostNameVerifierWithCertificatePinning {1}: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] IBM WorkLight HostNameVerifierWithCertificatePinning {1} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass IBM WorkLight {2}
            var worklight_Activity_2 = Java.use('com.worklight.wlclient.certificatepinning.HostNameVerifierWithCertificatePinning');
            worklight_Activity_2.verify.overload('java.lang.String', 'java.security.cert.X509Certificate').implementation = function(a, b) {
                console.log('[+] Bypassing IBM WorkLight HostNameVerifierWithCertificatePinning {2}: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] IBM WorkLight HostNameVerifierWithCertificatePinning {2} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass IBM WorkLight {3}
            var worklight_Activity_3 = Java.use('com.worklight.wlclient.certificatepinning.HostNameVerifierWithCertificatePinning');
            worklight_Activity_3.verify.overload('java.lang.String', '[Ljava.lang.String;', '[Ljava.lang.String;').implementation = function(a, b) {
                console.log('[+] Bypassing IBM WorkLight HostNameVerifierWithCertificatePinning {3}: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] IBM WorkLight HostNameVerifierWithCertificatePinning {3} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass IBM WorkLight {4}
            var worklight_Activity_4 = Java.use('com.worklight.wlclient.certificatepinning.HostNameVerifierWithCertificatePinning');
            worklight_Activity_4.verify.overload('java.lang.String', 'javax.net.ssl.SSLSession').implementation = function(a, b) {
                console.log('[+] Bypassing IBM WorkLight HostNameVerifierWithCertificatePinning {4}: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] IBM WorkLight HostNameVerifierWithCertificatePinning {4} pinner not found');
            //console.log(err);
        }




        // Conscrypt CertPinManager //
        //////////////////////////////
        try {
            var conscrypt_CertPinManager_Activity = Java.use('com.android.org.conscrypt.CertPinManager');
            conscrypt_CertPinManager_Activity.checkChainPinning.overload('java.lang.String', 'java.util.List').implementation = function(a, b) {
                console.log('[+] Bypassing Conscrypt CertPinManager: ' + a);
                //return;
                return true;
            };
        } catch (err) {
            console.log('[-] Conscrypt CertPinManager pinner not found');
            //console.log(err);
        }




        // Conscrypt CertPinManager (Legacy) //
        ///////////////////////////////////////
        try {
            var legacy_conscrypt_CertPinManager_Activity = Java.use('com.android.org.conscrypt.CertPinManager');
            legacy_conscrypt_CertPinManager_Activity.isChainValid.overload('java.lang.String', 'java.util.List').implementation = function(a, b) {
                console.log('[+] Bypassing Conscrypt CertPinManager (Legacy): ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Conscrypt CertPinManager (Legacy) pinner not found');
            //console.log(err);
        }




        // CWAC-Netsecurity (unofficial back-port pinner for Android<4.2) CertPinManager //
        ///////////////////////////////////////////////////////////////////////////////////
        try {
            var cwac_CertPinManager_Activity = Java.use('com.commonsware.cwac.netsecurity.conscrypt.CertPinManager');
            cwac_CertPinManager_Activity.isChainValid.overload('java.lang.String', 'java.util.List').implementation = function(a, b) {
                console.log('[+] Bypassing CWAC-Netsecurity CertPinManager: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] CWAC-Netsecurity CertPinManager pinner not found');
            //console.log(err);
        }




        // Worklight Androidgap WLCertificatePinningPlugin //
        /////////////////////////////////////////////////////
        try {
            var androidgap_WLCertificatePinningPlugin_Activity = Java.use('com.worklight.androidgap.plugin.WLCertificatePinningPlugin');
            androidgap_WLCertificatePinningPlugin_Activity.execute.overload('java.lang.String', 'org.json.JSONArray', 'org.apache.cordova.CallbackContext').implementation = function(a, b, c) {
                console.log('[+] Bypassing Worklight Androidgap WLCertificatePinningPlugin: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Worklight Androidgap WLCertificatePinningPlugin pinner not found');
            //console.log(err);
        }




        // Netty FingerprintTrustManagerFactory //
        //////////////////////////////////////////
        try {
            var netty_FingerprintTrustManagerFactory = Java.use('io.netty.handler.ssl.util.FingerprintTrustManagerFactory');
            //NOTE: sometimes this below implementation could be useful
            //var netty_FingerprintTrustManagerFactory = Java.use('org.jboss.netty.handler.ssl.util.FingerprintTrustManagerFactory');
            netty_FingerprintTrustManagerFactory.checkTrusted.implementation = function(type, chain) {
                console.log('[+] Bypassing Netty FingerprintTrustManagerFactory');
            };
        } catch (err) {
            console.log('[-] Netty FingerprintTrustManagerFactory pinner not found');
            //console.log(err);
        }




        // Squareup CertificatePinner [OkHTTP<v3] (double bypass) //
        ////////////////////////////////////////////////////////////
        try {
            // Bypass Squareup CertificatePinner  {1}
            var Squareup_CertificatePinner_Activity_1 = Java.use('com.squareup.okhttp.CertificatePinner');
            Squareup_CertificatePinner_Activity_1.check.overload('java.lang.String', 'java.security.cert.Certificate').implementation = function(a, b) {
                console.log('[+] Bypassing Squareup CertificatePinner {1}: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] Squareup CertificatePinner {1} pinner not found');
            //console.log(err);
        }
        try {
            // Bypass Squareup CertificatePinner {2}
            var Squareup_CertificatePinner_Activity_2 = Java.use('com.squareup.okhttp.CertificatePinner');
            Squareup_CertificatePinner_Activity_2.check.overload('java.lang.String', 'java.util.List').implementation = function(a, b) {
                console.log('[+] Bypassing Squareup CertificatePinner {2}: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] Squareup CertificatePinner {2} pinner not found');
            //console.log(err);
        }




        // Squareup OkHostnameVerifier [OkHTTP v3] (double bypass) //
        /////////////////////////////////////////////////////////////
        try {
            // Bypass Squareup OkHostnameVerifier {1}
            var Squareup_OkHostnameVerifier_Activity_1 = Java.use('com.squareup.okhttp.internal.tls.OkHostnameVerifier');
            Squareup_OkHostnameVerifier_Activity_1.verify.overload('java.lang.String', 'java.security.cert.X509Certificate').implementation = function(a, b) {
                console.log('[+] Bypassing Squareup OkHostnameVerifier {1}: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Squareup OkHostnameVerifier check not found');
            //console.log(err);
        }
        try {
            // Bypass Squareup OkHostnameVerifier {2}
            var Squareup_OkHostnameVerifier_Activity_2 = Java.use('com.squareup.okhttp.internal.tls.OkHostnameVerifier');
            Squareup_OkHostnameVerifier_Activity_2.verify.overload('java.lang.String', 'javax.net.ssl.SSLSession').implementation = function(a, b) {
                console.log('[+] Bypassing Squareup OkHostnameVerifier {2}: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Squareup OkHostnameVerifier check not found');
            //console.log(err);
        }




        // Android WebViewClient (quadruple bypass) //
        //////////////////////////////////////////////
        try {
            // Bypass WebViewClient {1} (deprecated from Android 6)
            var AndroidWebViewClient_Activity_1 = Java.use('android.webkit.WebViewClient');
            AndroidWebViewClient_Activity_1.onReceivedSslError.overload('android.webkit.WebView', 'android.webkit.SslErrorHandler', 'android.net.http.SslError').implementation = function(obj1, obj2, obj3) {
                console.log('[+] Bypassing Android WebViewClient check {1}');
            };
        } catch (err) {
            console.log('[-] Android WebViewClient {1} check not found');
            //console.log(err)
        }
        try {
            // Bypass WebViewClient {2}
            var AndroidWebViewClient_Activity_2 = Java.use('android.webkit.WebViewClient');
            AndroidWebViewClient_Activity_2.onReceivedSslError.overload('android.webkit.WebView', 'android.webkit.WebResourceRequest', 'android.webkit.WebResourceError').implementation = function(obj1, obj2, obj3) {
                console.log('[+] Bypassing Android WebViewClient check {2}');
            };
        } catch (err) {
            console.log('[-] Android WebViewClient {2} check not found');
            //console.log(err)
        }
        try {
            // Bypass WebViewClient {3}
            var AndroidWebViewClient_Activity_3 = Java.use('android.webkit.WebViewClient');
            AndroidWebViewClient_Activity_3.onReceivedError.overload('android.webkit.WebView', 'int', 'java.lang.String', 'java.lang.String').implementation = function(obj1, obj2, obj3, obj4) {
                console.log('[+] Bypassing Android WebViewClient check {3}');
            };
        } catch (err) {
            console.log('[-] Android WebViewClient {3} check not found');
            //console.log(err)
        }
        try {
            // Bypass WebViewClient {4}
            var AndroidWebViewClient_Activity_4 = Java.use('android.webkit.WebViewClient');
            AndroidWebViewClient_Activity_4.onReceivedError.overload('android.webkit.WebView', 'android.webkit.WebResourceRequest', 'android.webkit.WebResourceError').implementation = function(obj1, obj2, obj3) {
                console.log('[+] Bypassing Android WebViewClient check {4}');
            };
        } catch (err) {
            console.log('[-] Android WebViewClient {4} check not found');
            //console.log(err)
        }




        // Apache Cordova WebViewClient //
        //////////////////////////////////
        try {
            var CordovaWebViewClient_Activity = Java.use('org.apache.cordova.CordovaWebViewClient');
            CordovaWebViewClient_Activity.onReceivedSslError.overload('android.webkit.WebView', 'android.webkit.SslErrorHandler', 'android.net.http.SslError').implementation = function(obj1, obj2, obj3) {
                console.log('[+] Bypassing Apache Cordova WebViewClient check');
                obj3.proceed();
            };
        } catch (err) {
            console.log('[-] Apache Cordova WebViewClient check not found');
            //console.log(err);
        }




        // Boye AbstractVerifier //
        ///////////////////////////
        try {
            var boye_AbstractVerifier = Java.use('ch.boye.httpclientandroidlib.conn.ssl.AbstractVerifier');
            boye_AbstractVerifier.verify.implementation = function(host, ssl) {
                console.log('[+] Bypassing Boye AbstractVerifier check: ' + host);
            };
        } catch (err) {
            console.log('[-] Boye AbstractVerifier check not found');
            //console.log(err);
        }




        // Apache AbstractVerifier //
        /////////////////////////////
        try {
            var apache_AbstractVerifier = Java.use('org.apache.http.conn.ssl.AbstractVerifier');
            apache_AbstractVerifier.verify.implementation = function(a, b, c, d) {
                console.log('[+] Bypassing Apache AbstractVerifier check: ' + a);
                return;
            };
        } catch (err) {
            console.log('[-] Apache AbstractVerifier check not found');
            //console.log(err);
        }




        // Chromium Cronet //
        /////////////////////
        try {
            var CronetEngineBuilderImpl_Activity = Java.use("org.chromium.net.impl.CronetEngineBuilderImpl");
            // Setting argument to TRUE (default is TRUE) to disable Public Key pinning for local trust anchors
            CronetEngine_Activity.enablePublicKeyPinningBypassForLocalTrustAnchors.overload('boolean').implementation = function(a) {
                console.log("[+] Disabling Public Key pinning for local trust anchors in Chromium Cronet");
                var cronet_obj_1 = CronetEngine_Activity.enablePublicKeyPinningBypassForLocalTrustAnchors.call(this, true);
                return cronet_obj_1;
            };
            // Bypassing Chromium Cronet pinner
            CronetEngine_Activity.addPublicKeyPins.overload('java.lang.String', 'java.util.Set', 'boolean', 'java.util.Date').implementation = function(hostName, pinsSha256, includeSubdomains, expirationDate) {
                console.log("[+] Bypassing Chromium Cronet pinner: " + hostName);
                var cronet_obj_2 = CronetEngine_Activity.addPublicKeyPins.call(this, hostName, pinsSha256, includeSubdomains, expirationDate);
                return cronet_obj_2;
            };
        } catch (err) {
            console.log('[-] Chromium Cronet pinner not found')
            //console.log(err);
        }



        // Flutter Pinning packages http_certificate_pinning and ssl_pinning_plugin (double bypass) //
        //////////////////////////////////////////////////////////////////////////////////////////////
        try {
            // Bypass HttpCertificatePinning.check {1}
            var HttpCertificatePinning_Activity = Java.use('diefferson.http_certificate_pinning.HttpCertificatePinning');
            HttpCertificatePinning_Activity.checkConnexion.overload("java.lang.String", "java.util.List", "java.util.Map", "int", "java.lang.String").implementation = function (a, b, c ,d, e) {
                console.log('[+] Bypassing Flutter HttpCertificatePinning : ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Flutter HttpCertificatePinning pinner not found');
            //console.log(err);
        }
        try {
            // Bypass SslPinningPlugin.check {2}
            var SslPinningPlugin_Activity = Java.use('com.macif.plugin.sslpinningplugin.SslPinningPlugin');
            SslPinningPlugin_Activity.checkConnexion.overload("java.lang.String", "java.util.List", "java.util.Map", "int", "java.lang.String").implementation = function (a, b, c ,d, e) {
                console.log('[+] Bypassing Flutter SslPinningPlugin: ' + a);
                return true;
            };
        } catch (err) {
            console.log('[-] Flutter SslPinningPlugin pinner not found');
            //console.log(err);
        }




        // Dynamic SSLPeerUnverifiedException Patcher                                //
        // An useful technique to bypass SSLPeerUnverifiedException failures raising //
        // when the Android app uses some uncommon SSL Pinning methods or an heavily //
        // code obfuscation. Inspired by an idea of: https://github.com/httptoolkit  //
        ///////////////////////////////////////////////////////////////////////////////
        function rudimentaryFix(typeName) {
            // This is a improvable rudimentary fix, if not works you can patch it manually
            if (typeName === undefined){
                return;
            } else if (typeName === 'boolean') {
                return true;
            } else {
                return null;
            }
        }
        try {
            var UnverifiedCertError = Java.use('javax.net.ssl.SSLPeerUnverifiedException');
            UnverifiedCertError.$init.implementation = function (str) {
                console.log('\x1b[36m[!] Unexpected SSLPeerUnverifiedException occurred, trying to patch it dynamically...\x1b[0m');
                try {
                    var stackTrace = Java.use('java.lang.Thread').currentThread().getStackTrace();
                    var exceptionStackIndex = stackTrace.findIndex(stack =>
                        stack.getClassName() === "javax.net.ssl.SSLPeerUnverifiedException"
                    );
                    // Retrieve the method raising the SSLPeerUnverifiedException
                    var callingFunctionStack = stackTrace[exceptionStackIndex + 1];
                    var className = callingFunctionStack.getClassName();
                    var methodName = callingFunctionStack.getMethodName();
                    var callingClass = Java.use(className);
                    var callingMethod = callingClass[methodName];
                    console.log('\x1b[36m[!] Attempting to bypass uncommon SSL Pinning method on: '+className+'.'+methodName+'\x1b[0m');
                    // Skip it when already patched by Frida
                    if (callingMethod.implementation) {
                        return;
                    }
                    // Trying to patch the uncommon SSL Pinning method via implementation
                    var returnTypeName = callingMethod.returnType.type;
                    callingMethod.implementation = function() {
                        rudimentaryFix(returnTypeName);
                    };
                } catch (e) {
                    // Dynamic patching via implementation does not works, then trying via function overloading
                    //console.log('[!] The uncommon SSL Pinning method has more than one overload);
                    if (String(e).includes(".overload")) {
                        var splittedList = String(e).split(".overload");
                        for (let i=2; i<splittedList.length; i++) {
                            var extractedOverload = splittedList[i].trim().split("(")[1].slice(0,-1).replaceAll("'","");
                            // Check if extractedOverload has multiple arguments
                            if (extractedOverload.includes(",")) {
                                // Go here if overloaded method has multiple arguments (NOTE: max 6 args are covered here)
                                var argList = extractedOverload.split(", ");
                                console.log('\x1b[36m[!] Attempting overload of '+className+'.'+methodName+' with arguments: '+extractedOverload+'\x1b[0m');
                                if (argList.length == 2) {
                                    callingMethod.overload(argList[0], argList[1]).implementation = function(a,b) {
                                        rudimentaryFix(returnTypeName);
                                    }
                                } else if (argNum == 3) {
                                    callingMethod.overload(argList[0], argList[1], argList[2]).implementation = function(a,b,c) {
                                        rudimentaryFix(returnTypeName);
                                    }
                                }  else if (argNum == 4) {
                                    callingMethod.overload(argList[0], argList[1], argList[2], argList[3]).implementation = function(a,b,c,d) {
                                        rudimentaryFix(returnTypeName);
                                    }
                                }  else if (argNum == 5) {
                                    callingMethod.overload(argList[0], argList[1], argList[2], argList[3], argList[4]).implementation = function(a,b,c,d,e) {
                                        rudimentaryFix(returnTypeName);
                                    }
                                }  else if (argNum == 6) {
                                    callingMethod.overload(argList[0], argList[1], argList[2], argList[3], argList[4], argList[5]).implementation = function(a,b,c,d,e,f) {
                                        rudimentaryFix(returnTypeName);
                                    }
                                }
                            // Go here if overloaded method has a single argument
                            } else {
                                callingMethod.overload(extractedOverload).implementation = function(a) {
                                    rudimentaryFix(returnTypeName);
                                }
                            }
                        }
                    } else {
                        console.log('\x1b[36m[-] Failed to dynamically patch SSLPeerUnverifiedException '+e+'\x1b[0m');
                    }
                }
                //console.log('\x1b[36m[+] SSLPeerUnverifiedException hooked\x1b[0m');
                return this.$init(str);
            };
        } catch (err) {
            //console.log('\x1b[36m[-] SSLPeerUnverifiedException not found\x1b[0m');
            //console.log('\x1b[36m'+err+'\x1b[0m');
        }
    });

}, 0);

View Code

脚本启动方式：
```
frida -U -f [APP_ID] -l frida_multiple_unpinning.js
frida -UF -l frida_multiple_unpinning.js
```
注意：frida的hook检测，比如安居客需要删除文件：libmsaoaidsec.so

2、Xposed Hook
- 安装 Magisk 面具（手机root）
- 在面具中刷入LSPosed框架
  - 下载Zygisk-LSPosed：https://github.com/LSPosed/LSPosed/releases
  - Magisk开启Zygisk
  - 上传Zygisk-LSPosed zip文件，并在Magisk中进行安装
  - 刷入成功后，就可以看到 LSPosed 的图标，如果没有出现的话，可以通过MT、NP等管理器去手机的 /data/adb/lspd/目录下找manager.apk包，然后再点击安装即可。
- 安装JustTrustMePlus.apk
  - 在LSPosed中启用模块，并勾选上需要启用该模块的app

三、服务端证书校验

- 在客户端预设证书（p12/bks）
- 客户端向服务端发送请求时，携带证书信息，在服务端会校验客户端携带过来证书的合法性

校验时逻辑
- apk打包时，通常将 bks 或 p12 格式的证书保存在assets 或 raw 等目录
- 安卓代码发送请求时，会读取【证书内容】+【证书密码】
- 注意：一般大点的公司不会采用服务端证书校验，因为会增加服务器压力

逆向

1、Hook密码

Java.perform(function () {
    var KeyStore = Java.use("java.security.KeyStore");

    KeyStore.load.overload('java.io.InputStream', '[C').implementation = function (v1, v2) {
        var pwd = Java.use("java.lang.String").$new(v2);
        console.log('\n------------')
        console.log("类型：" + this.getType());
        console.log("密码：" + pwd);
        // console.log(JSON.stringify(v1));
        //console.log(Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Throwable").$new()));
        var res = this.load(v1, v2);
        return res;
    };
});
// frida -U -f com.paopaotalk.im -l 1.hook_password.js

KeyStore.load是系统函数，所以这是一个通用hook脚本

2、获取证书文件

方式1：定位代码，找到加载证书的文件路径，然后去apk中寻找

方式2：Hook证书文件【注意：手机需要对当前app开启存储权限】

Java.perform(function () {
    var KeyStore = Java.use("java.security.KeyStore");
    var String = Java.use("java.lang.String");


    KeyStore.load.overload('java.io.InputStream', '[C').implementation = function (inputStream, v2) {
        var pwd = String.$new(v2);
        console.log('\n------------')
        console.log("密码：" + pwd, "类型：" + this.getType());

        if (this.getType() === "BKS") {
            var myArray = new Array(1024);
            for (var i = 0; i < myArray.length; i++) {
                myArray[i] = 0x0;
            }
            var buffer = Java.array('byte', myArray);
            var file = Java.use("java.io.File").$new("/sdcard/Download/cert-" + new Date().getTime() + ".bks");
            var out = Java.use("java.io.FileOutputStream").$new(file);
            var r;
            while ((r = inputStream.read(buffer)) > 0) {
                out.write(buffer, 0, r);
            }
            console.log("save success!")
            out.close()
        } else if (this.getType() === "pkcs12") {
            var myArray = new Array(1024);
            for (var i = 0; i < myArray.length; i++) {
                myArray[i] = 0x0;
            }
            var buffer = Java.array('byte', myArray);
            var file = Java.use("java.io.File").$new("/sdcard/Download/cert-" + new Date().getTime() + ".p12");
            var out = Java.use("java.io.FileOutputStream").$new(file);
            var r;
            while ((r = inputStream.read(buffer)) > 0) {
                out.write(buffer, 0, r);
            }
            console.log("save success!")
            out.close()
        }

        var res = this.load(inputStream, v2);
        return res;
    };

});

// frida -U -f com.paopaotalk.im -l hook_cert.js

View Code

3、转换证书格式
- charles不支持导入bks格式的证书，如果逆向过程中得到了bks格式证书，需要使用 portecle 将bks证书转化弄成p12格式，然后再处理。
  - 启动portecle ：
```
java -jar portecle.jar
```
    或者直接双击portecle.jar也可以打开
  - 打开bks文件：【File】-【Open Keystore File...】-【找到文件，输入上述hook到的密码】
  - 导出p12文件：【右击文件】-【Export】-【导出类型选择：Private Key and Certificates】-【导出格式选择：PKCS12】
4、charles导入证书
- 【Proxy】-【SSL Proxying Settings】-【选择Client Certificates】-【add】-【Host和Port可以选填：*】-【选择Import P12】-【输入密码】

5、Python如何发送请求

方式1：

使用requests-pkcs12模块
```
pip install requests-pkcs12
```

代码示例：

from requests_pkcs12 import get, post

res = post(
    url='https://39.108.102.14:46077/userservices/v2/user/login',
    json={
        "device_type": "app"
    },
    headers={
        "bundle_id": "com.paopaotalk.im"
    },
    pkcs12_filename='Client.p12',
    pkcs12_password='111111',
    verify=False
)
print(res.text)

方式2：

使用requests模块（亲测不推荐）

默认requests不支持直接使用p12格式的证书，所以需要将p12转换成pem才可以
```
openssl pkcs12 -in Client.p12 -out demo.pem -nodes -passin 'pass:111111'
```

代码示例：

from requests import post

res = post(
    url='https://39.108.102.14:46077/userservices/v2/user/login',
    json={
        "device_type": "app"
    },
    headers={
        "bundle_id": "com.paopaotalk.im"
    },
    cert='demo.pem',
    verify=False
)
print(res.text)

openssl转换证书格式貌似不太好使，不推荐这种方案

四、代码混淆

关于混淆
- 第三方的包是可以进行混淆的，例如：OKHttp3.Http.Cert.check 被混淆后可以是a.f.c.b 形式
- 系统包不会被混淆，比如：java.lang.String
- 因此：代码混淆针对的是【客户端证书的校验】
解决思路：
- Hook系统底层必走的核心方法，获取调用栈
- 根据调用栈向上寻找到客户端证书校验的代码位置，通过GDA/Jadx等工具分析源码，对代码混淆前后的类名和方法名进行比对
- 编写frida Hook脚本
客户端证书校验顺序
- 注意：内部按照顺序对这个3个过程进行校验，只要有一个无法通过，后续的校验就不会再触发执行。上述三个校验的触发位置是在：okhttp3.internal.connection.RealConnection类中的connectTls方法

Hook流程

1、Hook系统方法connectTls位置【同时也能过证书校验】

Java.perform(function () {
    var Platform = Java.use('com.android.org.conscrypt.Platform');
    Platform.checkServerTrusted.overload('javax.net.ssl.X509TrustManager', '[Ljava.security.cert.X509Certificate;', 'java.lang.String', 'com.android.org.conscrypt.AbstractConscryptSocket').implementation = function (x509tm, chain, authType, socket) {
        console.log('\n[+] checkServer  ',x509tm,JSON.stringify(x509tm) );
        console.log(Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Throwable").$new()));
        // 这里会去调用客户端证书校验的方法，不执行，就是不去校验（直接通过）。
        // return this.checkServerTrusted(x509tm, chain, authType, socket);
    };
});

// frida -U -f cn.ticktick.task -l hook_system.js

根据调用栈向上找到证书校验的位置，即com.android.org.conscrypt.ConscryptFileDescriptorSocket.startHandshake的上一级调用栈（日志直接看它的下一行），然后通过GDA等查看源码进行比对

2、Hook【主机校验：verify方法】----需要分两步

第一步

Hook connectTls方法，读取内部的hostNameVerifier值，从而获取混淆后的类名【需要使用反射】

Java.perform(function () {
    // 反射获取对象属性
    function getFieldValue(obj, fieldName) {
        var cls = obj.getClass();
        var field = cls.getDeclaredField(fieldName);
        field.setAccessible(true);
        var value = field.get(obj);
        return value;
    }var RealConnection = Java.use('uk.c');
    RealConnection.f.implementation = function (a, b, c, d) {
        try {
            // 源码：【!a1.j.verify()】  =>  【this.c.a.j.verify()】
            var route = getFieldValue(this, "c");
            console.log('route=', route);
            var address = getFieldValue(route, 'a');
            console.log('address=', address);
            var hostnameVerifier = getFieldValue(address, 'j');
            console.log('\n[+++] hostnameVerifier', JSON.stringify(hostnameVerifier));

        } catch (e) {
            console.log(e);
        }
        return this.f(a, b, c, d);
    };
});

第二步

根据上述Hook结果，进行Hook

Java.perform(function () {
    var d = Java.use('al.d');
    d.verify.overload('java.lang.String', 'javax.net.ssl.SSLSession').implementation = function(a, b){
        console.log('2、主机名校验：verify。。。')
        return true;
    }
});

3、Hook 【Pinner公钥校验：check方法】

可以参照frida_multiple_unpinning脚本中的写法，但是具体的类和方法名需要替换成混淆后的【即原check方法】

Java.perform(function () {
    var pinner = Java.use('rk.f');
    pinner.a.overload('java.lang.String', 'java.util.List').implementation = function(a, b) {
        console.log('[+] pinner check ' + a);
        return;
    };
});

// frida -UF -l hook_check.js

示例：滴答清单v6.3.3.0【需要同时hook过校验】

Java.perform(function () {

    // 1、证书校验
    var Platform = Java.use('com.android.org.conscrypt.Platform');
    Platform.checkServerTrusted.overload('javax.net.ssl.X509TrustManager', '[Ljava.security.cert.X509Certificate;', 'java.lang.String', 'com.android.org.conscrypt.AbstractConscryptSocket').implementation = function (x509tm, chain, authType, socket) {
        // console.log('\n[+] checkServer  ',x509tm,JSON.stringify(x509tm) );
        // console.log(Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Throwable").$new()));
        // 这里会去调用客户端证书校验的方法，不执行，就是不去校验（直接通过）。
        // return this.checkServerTrusted(x509tm, chain, authType, socket);
        console.log('1、证书校验。。。')
    };

    // 2、主机名校验
    var d = Java.use('al.d');
    d.verify.overload('java.lang.String', 'javax.net.ssl.SSLSession').implementation = function(a, b){
        console.log('2、主机名校验：verify。。。')
        return true;
    }

    // 3、pinner公钥校验
    var pinner = Java.use('rk.f');
    pinner.a.overload('java.lang.String', 'java.util.List').implementation = function(a, b) {
        console.log('3、pinner公钥check。。。');
        return;
    };
});

五、quic协议降级

抖音系使用的QUIC协议，想要抓包，可以基于此Hook脚本实现。

本质：强制降级不要走QUIC协议，只能走HTTP协议。

function hookso_ssl(){
    Java.perform(function(){
        var class_ = Java.use("org.chromium.CronetClient");
        console.log(class_);
        class_.tryCreateCronetEngine.implementation = function(a,b,c,d,e,f,g,h){
            console.log(a,b,c,d,e,f,g,h);
            //var result = this.tryCreateCronetEngine(a,b,c,d,e,f,g,h);
            var result;
            console.log("result==>",result);
            return result;
        }
    })
}

setImmediate(hookso_ssl)
//frida -U -f com.dragon.read -l dy.js
//frida -U -f com.ss.android.ugc.aweme -l dy.js

例如：抖音v25.9.0 或番茄免费小说 v5.8.1.33

posted @ 2024-03-07 22:53 eliwang 阅读(42) 评论(0) 编辑收藏举报

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刷新页面返回顶部

eliwang

学无止境的小渣渣

app抓包专题

一、系统代理-NO_PROXY

1、软件

2、frida Hook