Bypass Android Root Detection / Bypass RootBeer - August 2019

root_bypass.js

// $ frida -l antiroot.js -U -f com.example.app --no-pause
// CHANGELOG by Pichaya Morimoto (p.morimoto@sth.sh): 
//  - I added extra whitelisted items to deal with the latest versions 
// 						of RootBeer/Cordova iRoot as of August 6, 2019
//  - The original one just fucked up (kill itself) if Magisk is installed lol
// Credit & Originally written by: https://codeshare.frida.re/@dzonerzy/fridantiroot/
// If this isn't working in the future, check console logs, rootbeer src, or libtool-checker.so
Java.perform(function() {

    var RootPackages = ["com.noshufou.android.su", "com.noshufou.android.su.elite", "eu.chainfire.supersu",
        "com.koushikdutta.superuser", "com.thirdparty.superuser", "com.yellowes.su", "com.koushikdutta.rommanager",
        "com.koushikdutta.rommanager.license", "com.dimonvideo.luckypatcher", "com.chelpus.lackypatch",
        "com.ramdroid.appquarantine", "com.ramdroid.appquarantinepro", "com.devadvance.rootcloak", "com.devadvance.rootcloakplus",
        "de.robv.android.xposed.installer", "com.saurik.substrate", "com.zachspong.temprootremovejb", "com.amphoras.hidemyroot",
        "com.amphoras.hidemyrootadfree", "com.formyhm.hiderootPremium", "com.formyhm.hideroot", "me.phh.superuser",
        "eu.chainfire.supersu.pro", "com.kingouser.com", "com.android.vending.billing.InAppBillingService.COIN","com.topjohnwu.magisk"
    ];

    var RootBinaries = ["su", "busybox", "supersu", "Superuser.apk", "KingoUser.apk", "SuperSu.apk","magisk"];

    var RootProperties = {
        "ro.build.selinux": "1",
        "ro.debuggable": "0",
        "service.adb.root": "0",
        "ro.secure": "1"
    };

    var RootPropertiesKeys = [];

    for (var k in RootProperties) RootPropertiesKeys.push(k);

    var PackageManager = Java.use("android.app.ApplicationPackageManager");

    var Runtime = Java.use('java.lang.Runtime');

    var NativeFile = Java.use('java.io.File');

    var String = Java.use('java.lang.String');

    var SystemProperties = Java.use('android.os.SystemProperties');

    var BufferedReader = Java.use('java.io.BufferedReader');

    var ProcessBuilder = Java.use('java.lang.ProcessBuilder');

    var StringBuffer = Java.use('java.lang.StringBuffer');

    var loaded_classes = Java.enumerateLoadedClassesSync();

    send("Loaded " + loaded_classes.length + " classes!");

    var useKeyInfo = false;

    var useProcessManager = false;

    send("loaded: " + loaded_classes.indexOf('java.lang.ProcessManager'));

    if (loaded_classes.indexOf('java.lang.ProcessManager') != -1) {
        try {
            //useProcessManager = true;
            //var ProcessManager = Java.use('java.lang.ProcessManager');
        } catch (err) {
            send("ProcessManager Hook failed: " + err);
        }
    } else {
        send("ProcessManager hook not loaded");
    }

    var KeyInfo = null;

    if (loaded_classes.indexOf('android.security.keystore.KeyInfo') != -1) {
        try {
            //useKeyInfo = true;
            //var KeyInfo = Java.use('android.security.keystore.KeyInfo');
        } catch (err) {
            send("KeyInfo Hook failed: " + err);
        }
    } else {
        send("KeyInfo hook not loaded");
    }

    PackageManager.getPackageInfo.overload('java.lang.String', 'int').implementation = function(pname, flags) {
        var shouldFakePackage = (RootPackages.indexOf(pname) > -1);
        if (shouldFakePackage) {
            send("Bypass root check for package: " + pname);
            pname = "set.package.name.to.a.fake.one.so.we.can.bypass.it";
        }
        return this.getPackageInfo.call(this, pname, flags);
    };

    NativeFile.exists.implementation = function() {
        var name = NativeFile.getName.call(this);
        var shouldFakeReturn = (RootBinaries.indexOf(name) > -1);
        if (shouldFakeReturn) {
            send("Bypass return value for binary: " + name);
            return false;
        } else {
            return this.exists.call(this);
        }
    };

    var exec = Runtime.exec.overload('[Ljava.lang.String;');
    var exec1 = Runtime.exec.overload('java.lang.String');
    var exec2 = Runtime.exec.overload('java.lang.String', '[Ljava.lang.String;');
    var exec3 = Runtime.exec.overload('[Ljava.lang.String;', '[Ljava.lang.String;');
    var exec4 = Runtime.exec.overload('[Ljava.lang.String;', '[Ljava.lang.String;', 'java.io.File');
    var exec5 = Runtime.exec.overload('java.lang.String', '[Ljava.lang.String;', 'java.io.File');

    exec5.implementation = function(cmd, env, dir) {
        if (cmd.indexOf("getprop") != -1 || cmd == "mount" || cmd.indexOf("build.prop") != -1 || cmd == "id" || cmd == "sh") {
            var fakeCmd = "grep";
            send("Bypass " + cmd + " command");
            return exec1.call(this, fakeCmd);
        }
        if (cmd == "su") {
            var fakeCmd = "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled";
            send("Bypass " + cmd + " command");
            return exec1.call(this, fakeCmd);
        }
        if (cmd == "which") {
            var fakeCmd = "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled";
            send("Bypass which command");
            return exec1.call(this, fakeCmd);
        }
        return exec5.call(this, cmd, env, dir);
    };

    exec4.implementation = function(cmdarr, env, file) {
        for (var i = 0; i < cmdarr.length; i = i + 1) {
            var tmp_cmd = cmdarr[i];
            if (tmp_cmd.indexOf("getprop") != -1 || tmp_cmd == "mount" || tmp_cmd.indexOf("build.prop") != -1 || tmp_cmd == "id" || tmp_cmd == "sh") {
                var fakeCmd = "grep";
                send("Bypass " + cmdarr + " command");
                return exec1.call(this, fakeCmd);
            }

            if (tmp_cmd == "su") {
                var fakeCmd = "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled";
                send("Bypass " + cmdarr + " command");
                return exec1.call(this, fakeCmd);
            }
        }
        return exec4.call(this, cmdarr, env, file);
    };

    exec3.implementation = function(cmdarr, envp) {
        for (var i = 0; i < cmdarr.length; i = i + 1) {
            var tmp_cmd = cmdarr[i];
            if (tmp_cmd.indexOf("getprop") != -1 || tmp_cmd == "mount" || tmp_cmd.indexOf("build.prop") != -1 || tmp_cmd == "id" || tmp_cmd == "sh") {
                var fakeCmd = "grep";
                send("Bypass " + cmdarr + " command");
                return exec1.call(this, fakeCmd);
            }

            if (tmp_cmd == "su") {
                var fakeCmd = "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled";
                send("Bypass " + cmdarr + " command");
                return exec1.call(this, fakeCmd);
            }
        }
        return exec3.call(this, cmdarr, envp);
    };

    exec2.implementation = function(cmd, env) {
        if (cmd.indexOf("getprop") != -1 || cmd == "mount" || cmd.indexOf("build.prop") != -1 || cmd == "id" || cmd == "sh") {
            var fakeCmd = "grep";
            send("Bypass " + cmd + " command");
            return exec1.call(this, fakeCmd);
        }
        if (cmd == "su") {
            var fakeCmd = "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled";
            send("Bypass " + cmd + " command");
            return exec1.call(this, fakeCmd);
        }
        return exec2.call(this, cmd, env);
    };

    exec.implementation = function(cmd) {
        for (var i = 0; i < cmd.length; i = i + 1) {
            var tmp_cmd = cmd[i];
            if (tmp_cmd.indexOf("getprop") != -1 || tmp_cmd == "mount" || tmp_cmd.indexOf("build.prop") != -1 || tmp_cmd == "id" || tmp_cmd == "sh") {
                var fakeCmd = "grep";
                send("Bypass " + cmd + " command");
                return exec1.call(this, fakeCmd);
            }

            if (tmp_cmd == "su") {
                var fakeCmd = "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled";
                send("Bypass " + cmd + " command");
                return exec1.call(this, fakeCmd);
            }
        }

        return exec.call(this, cmd);
    };

    exec1.implementation = function(cmd) {
        if (cmd.indexOf("getprop") != -1 || cmd == "mount" || cmd.indexOf("build.prop") != -1 || cmd == "id" || cmd == "sh") {
            var fakeCmd = "grep";
            send("Bypass " + cmd + " command");
            return exec1.call(this, fakeCmd);
        }
        if (cmd == "su") {
            var fakeCmd = "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled";
            send("Bypass " + cmd + " command");
            return exec1.call(this, fakeCmd);
        }
        return exec1.call(this, cmd);
    };

    String.contains.implementation = function(name) {
        if (name == "test-keys") {
            send("Bypass test-keys check");
            return false;
        }
        return this.contains.call(this, name);
    };

    var get = SystemProperties.get.overload('java.lang.String');

    get.implementation = function(name) {
        if (RootPropertiesKeys.indexOf(name) != -1) {
            send("Bypass " + name);
            return RootProperties[name];
        }
        return this.get.call(this, name);
    };

    Interceptor.attach(Module.findExportByName("libc.so", "fopen"), {
        onEnter: function(args) {
            var path1 = Memory.readCString(args[0]);
            var path = path1.split("/");
            var executable = path[path.length - 1];
            var shouldFakeReturn = (RootBinaries.indexOf(executable) > -1)
            if (shouldFakeReturn) {
                Memory.writeUtf8String(args[0], "/ggezxxx");
                send("Bypass native fopen >> "+path1);
            }
        },
        onLeave: function(retval) {

        }
    });

    Interceptor.attach(Module.findExportByName("libc.so", "fopen"), {
        onEnter: function(args) {
            var path1 = Memory.readCString(args[0]);
            var path = path1.split("/");
            var executable = path[path.length - 1];
            var shouldFakeReturn = (RootBinaries.indexOf(executable) > -1)
            if (shouldFakeReturn) {
                Memory.writeUtf8String(args[0], "/ggezxxx");
                send("Bypass native fopen >> "+path1);
            }
        },
        onLeave: function(retval) {

        }
    });

    Interceptor.attach(Module.findExportByName("libc.so", "system"), {
        onEnter: function(args) {
            var cmd = Memory.readCString(args[0]);
            send("SYSTEM CMD: " + cmd);
            if (cmd.indexOf("getprop") != -1 || cmd == "mount" || cmd.indexOf("build.prop") != -1 || cmd == "id") {
                send("Bypass native system: " + cmd);
                Memory.writeUtf8String(args[0], "grep");
            }
            if (cmd == "su") {
                send("Bypass native system: " + cmd);
                Memory.writeUtf8String(args[0], "justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled");
            }
        },
        onLeave: function(retval) {

        }
    });

    /*

    TO IMPLEMENT:

    Exec Family

    int execl(const char *path, const char *arg0, ..., const char *argn, (char *)0);
    int execle(const char *path, const char *arg0, ..., const char *argn, (char *)0, char *const envp[]);
    int execlp(const char *file, const char *arg0, ..., const char *argn, (char *)0);
    int execlpe(const char *file, const char *arg0, ..., const char *argn, (char *)0, char *const envp[]);
    int execv(const char *path, char *const argv[]);
    int execve(const char *path, char *const argv[], char *const envp[]);
    int execvp(const char *file, char *const argv[]);
    int execvpe(const char *file, char *const argv[], char *const envp[]);

    */


    BufferedReader.readLine.overload().implementation = function() {
        var text = this.readLine.call(this);
        if (text === null) {
            // just pass , i know it's ugly as hell but test != null won't work :(
        } else {
            var shouldFakeRead = (text.indexOf("ro.build.tags=test-keys") > -1);
            if (shouldFakeRead) {
                send("Bypass build.prop file read");
                text = text.replace("ro.build.tags=test-keys", "ro.build.tags=release-keys");
            }
        }
        return text;
    };

    var executeCommand = ProcessBuilder.command.overload('java.util.List');

    ProcessBuilder.start.implementation = function() {
        var cmd = this.command.call(this);
        var shouldModifyCommand = false;
        for (var i = 0; i < cmd.size(); i = i + 1) {
            var tmp_cmd = cmd.get(i).toString();
            if (tmp_cmd.indexOf("getprop") != -1 || tmp_cmd.indexOf("mount") != -1 || tmp_cmd.indexOf("build.prop") != -1 || tmp_cmd.indexOf("id") != -1) {
                shouldModifyCommand = true;
            }
        }
        if (shouldModifyCommand) {
            send("Bypass ProcessBuilder " + cmd);
            this.command.call(this, ["grep"]);
            return this.start.call(this);
        }
        if (cmd.indexOf("su") != -1) {
            send("Bypass ProcessBuilder " + cmd);
            this.command.call(this, ["justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled"]);
            return this.start.call(this);
        }

        return this.start.call(this);
    };

    if (useProcessManager) {
        var ProcManExec = ProcessManager.exec.overload('[Ljava.lang.String;', '[Ljava.lang.String;', 'java.io.File', 'boolean');
        var ProcManExecVariant = ProcessManager.exec.overload('[Ljava.lang.String;', '[Ljava.lang.String;', 'java.lang.String', 'java.io.FileDescriptor', 'java.io.FileDescriptor', 'java.io.FileDescriptor', 'boolean');

        ProcManExec.implementation = function(cmd, env, workdir, redirectstderr) {
            var fake_cmd = cmd;
            for (var i = 0; i < cmd.length; i = i + 1) {
                var tmp_cmd = cmd[i];
                if (tmp_cmd.indexOf("getprop") != -1 || tmp_cmd == "mount" || tmp_cmd.indexOf("build.prop") != -1 || tmp_cmd == "id") {
                    var fake_cmd = ["grep"];
                    send("Bypass " + cmdarr + " command");
                }

                if (tmp_cmd == "su") {
                    var fake_cmd = ["justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled"];
                    send("Bypass " + cmdarr + " command");
                }
            }
            return ProcManExec.call(this, fake_cmd, env, workdir, redirectstderr);
        };

        ProcManExecVariant.implementation = function(cmd, env, directory, stdin, stdout, stderr, redirect) {
            var fake_cmd = cmd;
            for (var i = 0; i < cmd.length; i = i + 1) {
                var tmp_cmd = cmd[i];
                if (tmp_cmd.indexOf("getprop") != -1 || tmp_cmd == "mount" || tmp_cmd.indexOf("build.prop") != -1 || tmp_cmd == "id") {
                    var fake_cmd = ["grep"];
                    send("Bypass " + cmdarr + " command");
                }

                if (tmp_cmd == "su") {
                    var fake_cmd = ["justafakecommandthatcannotexistsusingthisshouldthowanexceptionwheneversuiscalled"];
                    send("Bypass " + cmdarr + " command");
                }
            }
            return ProcManExecVariant.call(this, fake_cmd, env, directory, stdin, stdout, stderr, redirect);
        };
    }

    if (useKeyInfo) {
        KeyInfo.isInsideSecureHardware.implementation = function() {
            send("Bypass isInsideSecureHardware");
            return true;
        }
    }

});