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 ([email protected]): 
//  - 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;
        }
    }

});

@buffer1900 you can use https://codeshare.frida.re/@dzonerzy/fridantiroot/.
It worked for me.

works in that the app starts for me but then it crashes right away.

It worked for me, thank you.

Brilliant it worked thank you

For me, need a tiny update "ro.build.selinux": "0", to make totally not rooted. Anyway, nice trick.

Proof: https://i.imgur.com/uw88dd8.png.

`

.

Awesome script mate, thank you!

Good one! Thank for saving many hours

Still works thank you <3

Thank you!

A much shorter version:

https://medium.com/secarmalabs/bypassing-androids-rootbeer-library-part-2-30beb0676c0b

Java.perform(function(){
    var RootBeer = Java.use("com.scottyab.rootbeer.RootBeer");
    var Utils = Java.use("com.scottyab.rootbeer.util.Utils");   
    
    RootBeer.detectRootManagementApps.overload().implementation = function(){
        return false;
    };
    
    RootBeer.detectPotentiallyDangerousApps.overload().implementation = function(){
        return false;
    };
    
    RootBeer.detectTestKeys.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForBusyBoxBinary.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForSuBinary.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkSuExists.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForRWPaths.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForDangerousProps.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForRootNative.overload().implementation = function(){
        return false;
    };
    
    RootBeer.detectRootCloakingApps.overload().implementation = function(){
        return false;
    };
    
    Utils.isSelinuxFlagInEnabled.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForMagiskBinary.overload().implementation = function(){
        return false;
    };
    
    RootBeer.isRooted.overload().implementation = function(){
        return false;
    };
});

A much shorter version:

https://medium.com/secarmalabs/bypassing-androids-rootbeer-library-part-2-30beb0676c0b

Java.perform(function(){
    var RootBeer = Java.use("com.scottyab.rootbeer.RootBeer");
    var Utils = Java.use("com.scottyab.rootbeer.util.Utils");   
    
    RootBeer.detectRootManagementApps.overload().implementation = function(){
        return false;
    };
    
    RootBeer.detectPotentiallyDangerousApps.overload().implementation = function(){
        return false;
    };
    
    RootBeer.detectTestKeys.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForBusyBoxBinary.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForSuBinary.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkSuExists.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForRWPaths.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForDangerousProps.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForRootNative.overload().implementation = function(){
        return false;
    };
    
    RootBeer.detectRootCloakingApps.overload().implementation = function(){
        return false;
    };
    
    Utils.isSelinuxFlagInEnabled.overload().implementation = function(){
        return false;
    };
    
    RootBeer.checkForMagiskBinary.overload().implementation = function(){
        return false;
    };
    
    RootBeer.isRooted.overload().implementation = function(){
        return false;
    };
});

Sometimes you can get something like Error: java.lang.ClassNotFoundException: Didn't find class "com.scottyab.rootbeer.RootBeer" on path: DexPathList so only longer bypass version will work