对一次绕过SSL pinning踩坑记录

/*    Android SSL Re-pinning frida script v0.2 030417-pier$ adb push burpca-cert-der.crt /data/local/tmp/cert-der.crt   $ frida -U -f it.app.mobile -l frida-android-repinning.js --no-pausehttps://techblog.mediaservice.net/2017/07/universal-android-ssl-pinning-bypass-with-frida/   UPDATE 20191605: Fixed undeclared var. Thanks to @oleavr and @ehsanpc9999 !*/setTimeout(function(){Java.perform(function (){console.log("");console.log("[.] Cert Pinning Bypass/Re-Pinning");var CertificateFactory = Java.use("java.security.cert.CertificateFactory");var FileInputStream = Java.use("java.io.FileInputStream");var BufferedInputStream = Java.use("java.io.BufferedInputStream");var X509Certificate = Java.use("java.security.cert.X509Certificate");var KeyStore = Java.use("java.security.KeyStore");var TrustManagerFactory = Java.use("javax.net.ssl.TrustManagerFactory");var SSLContext = Java.use("javax.net.ssl.SSLContext");// Load CAs from an InputStreamconsole.log("[+] Loading our CA...")var cf = CertificateFactory.getInstance("X.509");try {var fileInputStream = FileInputStream.$new("/data/local/tmp/cert-der.crt"); }catch(err) {console.log("[o] " + err); }var bufferedInputStream = BufferedInputStream.$new(fileInputStream);var ca = cf.generateCertificate(bufferedInputStream); bufferedInputStream.close();var certInfo = Java.cast(ca, X509Certificate);console.log("[o] Our CA Info: " + certInfo.getSubjectDN());// Create a KeyStore containing our trusted CAsconsole.log("[+] Creating a KeyStore for our CA...");var keyStoreType = KeyStore.getDefaultType();var keyStore = KeyStore.getInstance(keyStoreType); keyStore.load(null, null); keyStore.setCertificateEntry("ca", ca);// Create a TrustManager that trusts the CAs in our KeyStoreconsole.log("[+] Creating a TrustManager that trusts the CA in our KeyStore...");var tmfAlgorithm = TrustManagerFactory.getDefaultAlgorithm();var tmf = TrustManagerFactory.getInstance(tmfAlgorithm); tmf.init(keyStore);console.log("[+] Our TrustManager is ready...");console.log("[+] Hijacking SSLContext methods now...")console.log("[-] Waiting for the app to invoke SSLContext.init()...")SSLContext.init.overload("[Ljavax.net.ssl.KeyManager;", "[Ljavax.net.ssl.TrustManager;", "java.security.SecureRandom").implementation = function(a,b,c) {console.log("[o] App invoked javax.net.ssl.SSLContext.init...");  SSLContext.init.overload("[Ljavax.net.ssl.KeyManager;", "[Ljavax.net.ssl.TrustManager;", "java.security.SecureRandom").call(this, a, tmf.getTrustManagers(), c);console.log("[+] SSLContext initialized with our custom TrustManager!"); }});},0);