My Notes

Wednesday, May 19, 2021

Android Studio: generate apk for ApkPure

You can upload your application to 3rd party like apkpure:

https://apkpure.com/submit-apk

In Anroid Studio 4, Compile option are:

APK
V1 (Jar Signature) checked
V2 (Full APK Signature) checked

Start Upload

Package Name : com.example.com
What's new : update
Your Name : developer_name
Your Email : developer_email@example.com

Android java: play-services-ads 20.1.0 and gradle 6.5+

We are going to

implementation 'com.google.android.gms:play-services-ads:20.1.0'
java compile with xlint to check deprecation api
gradle 6.5+

Edit build.gradle project

...
buildscript {
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.1.3'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}
...
allprojects {

    repositories {
        jcenter()
        google()
    }

    gradle.projectsEvaluated {
        tasks.withType(JavaCompile) {
            options.compilerArgs << "-Xlint:deprecation"
        }
    }
}
...

Edit build.gradle(:app)

...
android {
    compileSdkVersion 30
    buildToolsVersion "30.0.3"
...
dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0'
    implementation 'androidx.appcompat:appcompat:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.3.0'
    implementation 'com.google.android.gms:play-services-ads:20.1.0'
}
...

Edit AndroidManifest.xml

<manifest>
...
    <application>
   ...
        
        <meta-data
            android:name="com.google.android.gms.ads.APPLICATION_ID"
            android:value="ca-app-pub-xxxxxxxxxxxxxxxx~yyyyyyyyyy"/>
...

# main_activity.xml
...
    
    <android.widget.FrameLayout
        android:id="@+id/adContainerView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/scroll_view"
        android:layout_centerHorizontal="true"
        android:layout_alignParentBottom="true"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        />
...

Edit MainActivity.java

...
    private FrameLayout adContainerView; // 20210220
    private AdView adView;
...
    private Handler myHandler = new Handler(Looper.getMainLooper()); // new Handler() deprecated 20210220
...

    @Override
    protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      ...
      MobileAds.initialize(this, new OnInitializationCompleteListener() {
         @Override
         public void onInitializationComplete(InitializationStatus initializationStatus) {
         }
      });
      adContainerView = findViewById(R.id.adContainerView);
      // Step 1 - Create an AdView and set the ad unit ID on it.
      adView = new AdView(this);
      // Banner test = ca-app-pub-3940256099942544/6300978111
      adView.setAdUnitId("ca-app-pub-xxxxxxxxxxxxxxxx~yyyyyyyyyy"); // CHANGE IT
      adContainerView.addView(adView);
      loadBanner();
      ...
    }

    // 20210220 start
    private void loadBanner() {
        // Create an ad request. Check your logcat output for the hashed device ID
        // to get test ads on a physical device, e.g.,
        // "Use AdRequest.Builder.addTestDevice("ABCDE0123") to get test ads on this
        // device."
        //AdRequest adRequest = new AdRequest.Builder().addTestDevice("ABCDE0123").build();
        AdRequest adRequest = new AdRequest.Builder().build();

        AdSize adSize = getAdSize();
        // Step 4 - Set the adaptive ad size on the ad view.
        adView.setAdSize(adSize);

        // Step 5 - Start loading the ad in the background.
        adView.loadAd(adRequest);
    }

    private AdSize getAdSize() {
        // Step 2 - Determine the screen width (less decorations) to use for the ad width.
        //Display display = getWindowManager().getDefaultDisplay(); // deprecated 20210220

        DisplayMetrics outMetrics = new DisplayMetrics();
        // display.getMetrics(outMetrics); // deprecated 20210220
        outMetrics = getApplicationContext().getResources().getDisplayMetrics(); //

        float widthPixels = outMetrics.widthPixels;
        float density = outMetrics.density;

        int adWidth = (int) (widthPixels / density);

        // Step 3 - Get adaptive ad size and return for setting on the ad view.
        return AdSize.getCurrentOrientationAnchoredAdaptiveBannerAdSize(this, adWidth);
    }
    // 20210220 end
...

Tuesday, March 30, 2021

Evercoss Genpro X Pro S50 removing malware Android.Downloader.4930 /system/lib/libcheckperlib.so

Requirement:

rooted android or temporary root using mtk-su create by Diplomatic
pc with adb or Termux

This are steps to remove malware Android.Downloader.4930 /system/lib/libcheckperlib.so using Termux created by Grey Tshirts:

Create these bash script and save it as s50_patch2021.sh
#!/system/bin/sh

FILE="/system/lib/libcheckperlib.so"

echo "checking $FILE"

if [ -f $FILE ]; then
echo "File $FILE exists."
echo "Try remount system rw."
/system/bin/mount -o rw,remount /system
echo "Backing up $FILE."
/system/bin/mkdir /sdcard/dedetok
/system/bin/cp $FILE /sdcard/dedetok
echo "Removing $FILE"
/system/bin/rm $FILE
echo "Remount system ro"
/system/bin/mount -o ro,remount /system
echo "Done, reboot your Evercoss S50"
else
echo "File $FILE does not exist."
fi
Or you can download it from this site. Open Termux and type
$ wget http://garasiku.my.id/folder/S50_patch2021.sh.txt
rename it
$ mv ./S50_patch2021.sh.txt ./S50_patch2021.sh
change permission
$ chmod 744 ./S50_patch2021.sh
run mtk-su and run the cript
# ./S50_patch2021.sh
reboot your phone

Don't forget to run your antivirus after reboot your phone. android is not save operating system.

Android: How to backup your google contact when your account has been deleted by google

If your google account was blocked or deleted by google, Do not immediately remove your account. We need google account to backup our contact from old device into new device.

Backup your contact

Open google contact
Goto settings -> Export
Leave name as contacts.vcf and save. It will backup all of your existing contact into Download folder on your device.

Create new google account

Open Settings for your phone
Goto Accounts -> Add account -> Google
Fill all required data, for example dedetoke@gmail.com

Move your contact into your new google account

Open google contact
Tap on top right image profile and change your contact to your new google account for example dedetoke@gmail.com
Goto settings -> Import
Select .vcf file and choose your new google account for example dedetoke@gmail.com
select contacts.vcf from Download folder
Follow instruction until import finish
Done, your contact will be backup into your new google account.

For whatsapp, if you want to save your chat you need to change your backup into your new google account.

You can do this, anytime google blocked or deleted your account, simple create a new account and let your dead email keep by google.

Sunday, March 14, 2021

Evercoss S50: iptables to block buildin bloatware

Note:

you need to run as root or use mtk-su to run temporary root created by Diplomatic
Termux with wget installed

These are backgroud connections capture in NoRoot Firewall by Grey Shirts

Anti Theft
ip 36.110.234.87 port 80 whois: CHINANET-BJ 36.110.0.0 - 36.110.255.255 CIDR 36.110.0.0/16
ip 104.192.109.67 port 5227 whois: CHINANET-LAX-IDC-2014 104.192.108.0 - 104.192.111.255 CIDR 104.192.108.0/22
ip 211.151.195.194 port 80 whois: CHINA-21VIANET 211.151.0.0 - 211.151.255.255 CIDR 211.151.0.0/16

com.android.sc
ip 47.90.110.234 port 80 whois: AL-3 47.88.0.0 - 47.91.255.255 CIDR 47.88.0.0/14
ip 104.192.110.206 port 80 whois: CHINANET-LAX-IDC-2014 104.192.108.0 - 104.192.111.255 CIDR 104.192.108.0/22
ip 104.192.110.243 port 80 whois: CHINANET-LAX-IDC-2014 104.192.108.0 - 104.192.111.255 CIDR 104.192.108.0/22
ip 124.156.123.59 port 443 whois: ACEVILLEPTELTD-SG 124.156.96.0 - 124.156.191.255 CIDR 124.156.96.0/19 124.156.128.0/18
ip 180.163.251.181 port 80 whois:CHINANET-SH 180.160.0.0 - 180.175.255.255 CIDR 180.160.0.0/12

Config Center
ip 104.182.110.205 port 443 whois: SIS-80-7-29-2014 104.176.0.0 - 104.191.255.255 CIDR 104.176.0.0/12

Initiator
ip 101.198.192.187 port 80 whois: QIHOO 101.198.196.0 - 101.198.199.255 CIDR 101.198.196.0/22
ip 101.198.192.189 port 80 whois: QIHOO 101.198.196.0 - 101.198.199.255 CIDR 101.198.196.0/22

The format to run iptables to drop packages

/system/bin/iptables -I INPUT -s [ip] -j DROP

Create script s50_iptables.sh

#!/bin/sh echo "Inserting iptables" if [ "$(/system/bin/iptables -S INPUT | grep -ce '36.110.0.0/16 -j DROP')" != 0 ] then echo "Skiped 36.110.0.0/16 -j DROP" else /system/bin/iptables -I INPUT -s 36.110.0.0/16 -j DROP echo "Added 36.110.0.0/16 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '104.192.108.0/22 -j DROP')" != 0 ] then echo "Skiped 104.192.108.0/22 -j DROP" else /system/bin/iptables -I INPUT -s 104.192.108.0/22 -j DROP echo "Added 104.192.108.0/22 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '211.151.0.0/16 -j DROP')" != 0 ] then echo "Skiped 211.151.0.0/16 -j DROP" else /system/bin/iptables -I INPUT -s 211.151.0.0/16 -j DROP echo "Added 211.151.0.0/16 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '47.88.0.0/14 -j DROP')" != 0 ] then echo "Skiped 47.88.0.0/14 -j DROP" else /system/bin/iptables -I INPUT -s 47.88.0.0/14 -j DROP echo "Added 47.88.0.0/14 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '124.156.96.0/19 -j DROP')" != 0 ] then echo "Skiped 124.156.96.0/19 -j DROP" else /system/bin/iptables -I INPUT -s 124.156.96.0/19 -j DROP echo "Added 124.156.96.0/19 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '124.156.128.0/18 -j DROP')" != 0 ] then echo "Skiped 124.156.128.0/18 -j DROP" else /system/bin/iptables -I INPUT -s 124.156.128.0/18 -j DROP echo "Added 124.156.128.0/18 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '180.160.0.0/12 -j DROP')" != 0 ] then echo "Skiped 180.160.0.0/12 -j DROP" else /system/bin/iptables -I INPUT -s 180.160.0.0/12 -j DROP echo "Added 180.160.0.0/12 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '104.176.0.0/12 -j DROP')" != 0 ] then echo "Skiped 104.176.0.0/12 -j DROP" else /system/bin/iptables -I INPUT -s 104.176.0.0/12 -j DROP echo "Added 104.176.0.0/12 -j DROP" fi if [ "$(/system/bin/iptables -S INPUT | grep -ce '101.198.196.0/22 -j DROP')" != 0 ] then echo "Skiped 101.198.196.0/22 -j DROP" else /system/bin/iptables -I INPUT -s 101.198.196.0/22 -j DROP echo "Added 101.198.196.0/22 -j DROP" fi echo "Done"

To run the script, open Termux and run mtk-su to gain root

Download the script

# wget http://garasiku.my.id/folder/s50_iptables.sh.txt

Rename and change permission

# mv ./s50_iptables.sh.txt ./s50_iptables.sh
# chmod 744 ./s50_iptables.sh

Run it

# ./s50_iptables.sh

To check it run

# /system/bin/iptables-save | grep INPUT

# /system/bin/iptables -S INPUT

Known Problem: After restarting or boot the device, the firewall rules will be flush! In the future, I will fix to to put it in /system/etc/init and run it when the device finish booting.

To run on ADB, replace #!/bin/sh to #!/system/bin/sh.

Credit:

MTK-SU by Diplomatic
NoRoot Firewall by Grey Shirts
Application Inspector by UBQSoft