okhttp hook modified by @komen205

okhttp_traceback.js

var hexToAscii = function(input){
    var hex = input.toString();
    var str = '';
    for (var i = 0; i < hex.length; i += 2)
      str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
    return str;
  }
  

function hook_okhttp3() {
    Java.perform(function() {
        var ByteString = Java.use("com.android.okhttp.okio.ByteString");
        var Buffer = Java.use("okio.Buffer");
        var Interceptor = Java.use("okhttp3.Interceptor");
        var MyInterceptor = Java.registerClass({
            name: "okhttp3.MyInterceptor",
            implements: [Interceptor],
            methods: {
                intercept: function(chain) {
                    var request = chain.request();
                    console.log("MyInterceptor.intercept onEnter:", request, "\nrequest headers:\n", request.headers());
                    var requestBody = request.body();
                    var contentLength = requestBody ? requestBody.contentLength() : 0;
                    if (contentLength > 0) {
                        
                        var BufferObj = Buffer.$new();
                        requestBody.writeTo(BufferObj);  
                        try{
                            console.log(Java.use("android.util.Log").getStackTraceString(Java.use("java.lang.Exception").$new()))
                            console.log("\nrequest body String:\n", BufferObj.readString(), "\n");
                        }
                        catch(error){
                            console.log(hexToAscii(ByteString.of(BufferObj.readByteArray()).hex()));
                        }    
                    }    

                    console.log("\n\n\n")
                    var response = chain.proceed(request);
                    try {
                        var ContentType = response.headers().get("Content-Type");
                        console.log("MyInterceptor.intercept onLeave:", response, "\nresponse headers:\n", response.headers());
                        console.log("ContentType:", ContentType);

                        // console.log("ContentType:", ContentType);
                        var responseBody = response.body();
                        console.log("responseBody", hexToAscii(responseBody.source().readByteString().hex()))
                        var contentLength = responseBody.source().readByteString().hex().length;
                        // console.log("contentLength",responseBody.contentLength())

                    } catch (error) {
                        console.log("error 3:", error);
                    }
                    return response;
                }
            }
        });
        var ArrayList = Java.use("java.util.ArrayList");
        var OkHttpClient = Java.use("okhttp3.OkHttpClient");
        console.log(OkHttpClient);
        OkHttpClient.$init.overload('okhttp3.OkHttpClient$Builder').implementation = function(Builder) {
            console.log("OkHttpClient.$init:", this, Java.cast(Builder.interceptors(), ArrayList));
            this.$init(Builder);
        };

        var MyInterceptorObj = MyInterceptor.$new();
        var Builder = Java.use("okhttp3.OkHttpClient$Builder");
        console.log(Builder);
        Builder.build.implementation = function() {
            this.interceptors().clear();
            //var MyInterceptorObj = MyInterceptor.$new();
            this.interceptors().add(MyInterceptorObj);
            var result = this.build();
            return result;
        };

        Builder.addInterceptor.implementation = function(interceptor) {
            this.interceptors().clear();
            //var MyInterceptorObj = MyInterceptor.$new();
            this.interceptors().add(MyInterceptorObj);
            return this;
            //return this.addInterceptor(interceptor);
        };

        console.log("hook_okhttp3...");
    });
}
hook_okhttp3()