安卓全息备份一键新机， 安卓手机一键备份免ROOT，实现改机过检测【仅供学习参考】

// 备份命令执行（需开启USB调试）
Process backupProcess = Runtime.getRuntime().exec(
    "adb backup -f /sdcard/backup.ab -apk -shared -all"
);

// 备份包解析（使用AndroidBackupExtractor）
ABE.unpack("backup.ab", "backup.tar", "password");

// 修改设备指纹参数（示例修改build.prop）
File buildProp = new File("backup.tar/system/build.prop");
modifyProperty(buildProp, "ro.serialno", generateRandomSerial());
modifyProperty(buildProp, "ro.build.fingerprint", "custom/fingerprint");

// 重打包备份文件
ABE.pack("modified.tar", "new_backup.ab", "password");

// 太极Xposed模块入口
public class VirtualBackup implements IXposedHookLoadPackage {
    private static final String TAG = "VirtualBackup";
    
    @Override 
    public void handleLoadPackage(XC_LoadPackage.LoadPackageParam lpparam) {
        if (lpparam.packageName.equals("android")) {
            // 劫持备份服务
            XposedHelpers.findAndHookMethod(
                "android.app.backup.BackupManager",
                lpparam.classLoader,
                "dataChanged",
                String.class,
                new XC_MethodHook() {
                    @Override
                    protected void beforeHookedMethod(MethodHookParam param) {
                        String pkg = (String) param.args[0];
                        Log.d(TAG, "拦截备份请求: " + pkg);
                        modifyBackupData(pkg); // 修改备份数据流
                    }
                });
        }
    }

    private void modifyBackupData(String pkg) {
        // 设备指纹修改逻辑
        if (pkg.equals("android")) {
            SystemProperties.set("ro.serialno", generateFakeSerial());
            SystemProperties.set("ro.build.fingerprint", "google/coral/coral:12/SP2A.220405.004/7735030:user/release-keys");
        }
    }
}

class DeviceSpoof {
    // 生成随机设备特征
    public static String generateFakeSerial() {
        return String.format("%016x", new SecureRandom().nextLong());
    }

    // 构建伪造的Build属性
    public static Map<String, String> buildFakeProps() {
        Map<String, String> props = new HashMap<>();
        props.put("ro.product.model", "Pixel 6");
        props.put("ro.product.manufacturer", "Google");
        props.put("ro.build.version.security_patch", "2025-05-05");
        return props;
    }

    // ADB备份命令封装
    public static void execBackupCommand(String outputPath) {
        try {
            Runtime.getRuntime().exec(new String[]{
                "adb", "backup", 
                "-f", outputPath,
                "-apk", "-shared", "-all",
                "-system" // 包含系统数据
            });
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

public class BackupParser {
    public static void unpackBackup(String abFile, String tarFile) {
        try {
            AndroidBackupExtractor.extractTar(
                new FileInputStream(abFile),
                new FileOutputStream(tarFile)
            );
        } catch (Exception e) {
            throw new RuntimeException("备份解析失败", e);
        }
    }

    public static void modifyBuildProp(File tarFile) {
        TarArchiveInputStream tis = null;
        TarArchiveOutputStream tos = null;
        try {
            // 实现build.prop的实时修改
            tis = new TarArchiveInputStream(new FileInputStream(tarFile));
            tos = new TarArchiveOutputStream(new FileOutputStream("modified_" + tarFile.getName()));
            
            TarArchiveEntry entry;
            while ((entry = tis.getNextTarEntry()) != null) {
                if (entry.getName().endsWith("build.prop")) {
                    modifyEntry(tis, tos, entry);
                } else {
                    tos.putArchiveEntry(entry);
                    IOUtils.copy(tis, tos);
                    tos.closeArchiveEntry();
                }
            }
        } finally {
            IOUtils.closeQuietly(tis);
            IOUtils.closeQuietly(tos);
        }
    }

    private static void modifyEntry(InputStream is, 
                                  TarArchiveOutputStream tos,
                                  TarArchiveEntry entry) {
        // 具体修改逻辑
        List<String> lines = IOUtils.readLines(is, "UTF-8");
        lines.replaceAll(line -> 
            line.startsWith("ro.serialno") ? 
            "ro.serialno=" + DeviceSpoof.generateFakeSerial() : line);
        
        TarArchiveEntry newEntry = new TarArchiveEntry(entry);
        tos.putArchiveEntry(newEntry);
        IOUtils.writeLines(lines, "\n", tos, "UTF-8");
        tos.closeArchiveEntry();
    }
}