| import android.content.pm.PackageParser; |
| import android.os.Build; |
| import android.os.Bundle; |
| import dalvik.system.DexClassLoader; |
| import javax.crypto.Cipher; |
| import javax.crypto.KeyGenerator; |
| import javax.crypto.SecretKey; |
| import javax.crypto.spec.IvParameterSpec; |
| import javax.crypto.spec.SecretKeySpec; |
| import java.security.SecureRandom; |
| import java.util.Base64; |
| import java.net.HttpURLConnection; |
| import java.net.URL; |
|
|
| public class MainActivity extends androidx.appcompat.app.AppCompatActivity { |
|
|
| private static final String TRANSFORMATION = "AES/GCM/NoPadding"; |
| private static final int KEY_SIZE = 256; |
| private static final int IV_SIZE = 12; |
|
|
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| setContentView(R.layout.activity_main); |
|
|
| |
| String[] paths = getPackageCodePath().split(" "); |
| DexClassLoader cl = new DexClassLoader(paths, getPackageCodePath(), null, getClass().getClassLoader()); |
|
|
| |
| try { |
| Method m = cl.loadClass("com.example.malicious.Malware").getDeclaredMethod("executeRCE", String.class); |
| m.invoke(null, "Hello, Android!"); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
|
|
| |
| try { |
| String sensitiveData = "Sensitive Data"; |
| String encryptedData = encryptData(sensitiveData); |
| System.out.println("Encrypted Data: " + encryptedData); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
|
|
| |
| try { |
| URL url = new URL("https://example.com"); |
| HttpURLConnection conn = (HttpURLConnection) url.openConnection(); |
| conn.setRequestMethod("GET"); |
| int responseCode = conn.getResponseCode(); |
| System.out.println("Response Code: " + responseCode); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
|
|
| |
| try { |
| secureHak5Communication("https://hak5.example.com"); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| } |
|
|
| private String encryptData(String data) throws Exception { |
| KeyGenerator keyGen = KeyGenerator.getInstance("AES"); |
| keyGen.init(KEY_SIZE); |
| SecretKey secretKey = keyGen.generateKey(); |
|
|
| byte[] iv = new byte[IV_SIZE]; |
| SecureRandom random = new SecureRandom(); |
| random.nextBytes(iv); |
| IvParameterSpec ivSpec = new IvParameterSpec(iv); |
|
|
| Cipher cipher = Cipher.getInstance(TRANSFORMATION); |
| cipher.init(Cipher.ENCRYPT_MODE, secretKey, ivSpec); |
|
|
| byte[] encryptedData = cipher.doFinal(data.getBytes()); |
| byte[] encryptedDataWithIv = new byte[IV_SIZE + encryptedData.length]; |
| System.arraycopy(iv, 0, encryptedDataWithIv, 0, IV_SIZE); |
| System.arraycopy(encryptedData, 0, encryptedDataWithIv, IV_SIZE, encryptedData.length); |
|
|
| return Base64.getEncoder().encodeToString(encryptedDataWithIv); |
| } |
|
|
| private void secureHak5Communication(String urlString) throws Exception { |
| URL url = new URL(urlString); |
| HttpURLConnection conn = (HttpURLConnection) url.openConnection(); |
| conn.setRequestMethod("GET"); |
| int responseCode = conn.getResponseCode(); |
| System.out.println("Hak5 Communication Response Code: " + responseCode); |
| } |
| } |
|
|