[Android][My Two Cents] Rename R.string.xxx and R.layout.yyy

Look at the obfuscated code below:

public final void m5789a() {
    C3100c0 c0Var = new C3100c0();
    c0Var.mo18394a(3, true);
    c0Var.mo18402b(2);
    c0Var.mo18403b(C3130w.m13418a(C3130w.f16352a, R.string.xmlstring_app_name, 0, 2, null));
    c0Var.mo18399a(C3130w.m13418a(C3130w.f16352a, R.string.xmlstring_message, 0, 2, null));
    c0Var.mo18406c((int) R.drawable.icon_white);
    C1093d.m8134b(c0Var, 9052, null, 2, null);
}
public void onCreate(Bundle bundle) {
    super.onCreate(bundle);
    ....
    View inflate = getLayoutInflater().inflate(R.layout.layout_text_password, null);
    ....
}

What’s wrong of the code ?

• All are the string id are exposed
• The layout id is exposed

How to hide them ?

This is My Two Cents way, a Python script to rename all of them before compiling:

import os

root = "/Users/xxx/projects/App/" # your app path

map = {
    'xmlstring_app_name':'knsgh', # string id
    'xmlstring_message' :'labgy'
}

map_layout = {
    'layout_text_password':'snhgy' # layout id
}

def update_files(map_of_name, map_of_layout):

    file_of_layout = files_id_dir('{}'.format(root))
    for file in file_of_layout:
        for key in map_of_layout.keys():
            if file.endswith('{}.xml'.format(key)):
                os.rename(r'{}'.format(file), file[:-len('{}.xml'.format(key))] + map_of_layout[key] + '.xml')

    fileList = files_id_dir('{}'.format(root))
    for file in fileList:
        if file.endswith('.kt') or file.endswith('.java') or file.endswith('.xml'):
            # print(file)
            try:
                f = open(file, 'r')
                lines = f.readlines()
                f.close();

                f = open(file, 'w')
                for line in lines:
                    line1 = line
                    for key in map_of_name.keys():
                        line1 = line1.replace(key, map_of_name[key])

                    for key in map_of_layout.keys():
                        line1 = line1.replace(key, map_of_layout[key])

                    f.write(line1)
                f.close()
            except:
                print('{} is failed to process'.format(file));

def files_id_dir(dirName):
    list_of_files = os.listdir(dirName)
    files = list()
    for entry in list_of_files:
        fullPath = os.path.join(dirName, entry)
        if os.path.isdir(fullPath):
            files = files + files_id_dir(fullPath)
        else:
            files.append(fullPath)

    return files

update_files(map, map_layout)

Conclusions:

• Running this script can rename all of the variable, SO PLEASE MAKE SURE YOU DID BACKUP YOUR SOURCE !!!!
• Update root, map and map_layout accordingly.
• Decompile the code to ensure all variables are renamed.
• Anyways, this is just My Two Cents !!

Used in:

Hong Alarm - Apps on Google Play