如何检测iOS应用程序是否已在越狱手机上运行？

Question

如果我希望我的应用程序在越狱的iPhone上表现不同,我将如何确定这一点？

Answer 1

这取决于越狱的意思.在简单的情况下,您应该能够看到Cydia是否已经安装并且可以通过它来实现

NSString *filePath = @"/Applications/Cydia.app";
if ([[NSFileManager defaultManager] fileExistsAtPath:filePath])
{
   // do something useful
}

对于被黑客攻击的内核,它涉及的内容有点多(很多).

Answer 2

+(BOOL)isJailbroken {
    NSURL* url = [NSURL URLWithString:@"cydia://package/com.example.package"];
    return [[UIApplication sharedApplication] canOpenURL:url];
}

/Applications/Cydia.app普通手机不允许检查文件路径？我从来没有听说过Apple检测到这个并且拒绝了它的应用程序,但Apple是不可预测的.Cydia有一个URL方案cydia:// 可以通过UIApplication合法检查canOpenURL:

Answer 3

这是一个代码,它结合了我为此需求找到的一些答案,并将为您提供更高的成功率:

BOOL isJailbroken()
{
#if !(TARGET_IPHONE_SIMULATOR)

   if ([[NSFileManager defaultManager] fileExistsAtPath:@"/Applications/Cydia.app"] ||
       [[NSFileManager defaultManager] fileExistsAtPath:@"/Library/MobileSubstrate/MobileSubstrate.dylib"] ||
       [[NSFileManager defaultManager] fileExistsAtPath:@"/bin/bash"] ||
       [[NSFileManager defaultManager] fileExistsAtPath:@"/usr/sbin/sshd"] ||
       [[NSFileManager defaultManager] fileExistsAtPath:@"/etc/apt"] ||
       [[NSFileManager defaultManager] fileExistsAtPath:@"/private/var/lib/apt/"] ||
       [[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"cydia://package/com.example.package"]])  {
         return YES;
   }

   FILE *f = NULL ;
   if ((f = fopen("/bin/bash", "r")) ||
      (f = fopen("/Applications/Cydia.app", "r")) ||
      (f = fopen("/Library/MobileSubstrate/MobileSubstrate.dylib", "r")) ||
      (f = fopen("/usr/sbin/sshd", "r")) ||
      (f = fopen("/etc/apt", "r")))  {
         fclose(f);
         return YES;
   }
   fclose(f);

   NSError *error;
   NSString *stringToBeWritten = @"This is a test.";
   [stringToBeWritten writeToFile:@"/private/jailbreak.txt" atomically:YES encoding:NSUTF8StringEncoding error:&error];
   [[NSFileManager defaultManager] removeItemAtPath:@"/private/jailbreak.txt" error:nil];
   if(error == nil)
   {
      return YES;
   }

#endif

   return NO;
}

Answer 4

检查内核是否坏了不是更多涉及.

越狱使内核对签名代码的签名检查始终报告代码已正确签名,不间断的手机无法运行带有错误签名的代码.

因此,在应用程序中包含一个带有错误签名的单独可执行文件.它可能只是一个具有main()和返回值的3行程序.在没有代码签名的情况下编译可执行文件(在"项目设置" - >"构建"中将其关闭),并使用"codesign"命令行实用程序使用其他密钥对其进行签名.

让您的应用执行单独的可执行文件.如果您的程序在使用错误的sig运行单独的可执行文件时无法获得返回值,那么它肯定会被判入狱.如果单独的可执行文件返回A-OK,那么手机肯定会被越狱.

Answer 5

BOOL isJailbroken()
{
#if TARGET_IPHONE_SIMULATOR
    return NO;
#else
    FILE *f = fopen("/bin/bash", "r");

    if (errno == ENOENT)
    {
        // device is NOT jailbroken
        fclose(f);
        return NO;
    }
    else {
        // device IS jailbroken
        fclose(f);
        return YES;
    }
#endif
}

Answer 6

您可以通过检查以下内容来检测设备是否为JailBroken:

• Cydia已安装
• 验证一些系统路径
• 执行沙箱完整性检查
• 执行符号链接验证
• 验证您是否在沙箱外创建和写入文件

我从各种文章和书籍中创建了一个开源库.在GitHub上试一试!

Answer 7

我在Swift 2.3中重写了@Yossi提供的解决方案

public static func jailbroken(application: UIApplication) -> Bool {
    guard let cydiaUrlScheme = NSURL(string: "cydia://package/com.example.package") else { return isJailbroken() }
    return application.canOpenURL(cydiaUrlScheme) || isJailbroken()
}


static func isJailbroken() -> Bool {

    if isSimulator {
        return false
    }

    let fileManager = NSFileManager.defaultManager()
    if fileManager.fileExistsAtPath("/Applications/Cydia.app") ||
        fileManager.fileExistsAtPath("/Library/MobileSubstrate/MobileSubstrate.dylib") ||
        fileManager.fileExistsAtPath("/bin/bash") ||
        fileManager.fileExistsAtPath("/usr/sbin/sshd") ||
        fileManager.fileExistsAtPath("/etc/apt") ||
        fileManager.fileExistsAtPath("/usr/bin/ssh") {
        return true
    }

    if canOpen("/Applications/Cydia.app") ||
        canOpen("/Library/MobileSubstrate/MobileSubstrate.dylib") ||
        canOpen("/bin/bash") ||
        canOpen("/usr/sbin/sshd") ||
        canOpen("/etc/apt") ||
        canOpen("/usr/bin/ssh") {
        return true
    }

    let path = "/private/" + NSUUID().UUIDString
    do {
        try "anyString".writeToFile(path, atomically: true, encoding: NSUTF8StringEncoding)
        try fileManager.removeItemAtPath(path)
        return true
    } catch {
        return false
    }
}

static func canOpen(path: String) -> Bool {
    let file = fopen(path, "r")
    guard file != nil else { return false }
    fclose(file)
    return true
}

Answer 8

我所知道的最复杂的方法是使用objc_copyImageNames()函数.它返回一个当前加载的库列表,因为大多数人在越狱设备上都有MobileSubstrate,并且大多数iAP破解工具依赖它,至少会出现一些MobileSubstrate库.

Answer 9

对于 Swift 4 及以上版本，请使用以下代码： 在 appdelegate 中添加以下代码：

private func getJailbrokenStatus() -> Bool {
    if TARGET_IPHONE_SIMULATOR != 1 {
        // Check 1 : existence of files that are common for jailbroken devices
        if FileManager.default.fileExists(atPath: "/Applications/Cydia.app")
            || FileManager.default.fileExists(atPath: "/Library/MobileSubstrate/MobileSubstrate.dylib")
            || FileManager.default.fileExists(atPath: "/bin/bash")
            || FileManager.default.fileExists(atPath: "/usr/sbin/sshd")
            || FileManager.default.fileExists(atPath: "/etc/apt")
            || FileManager.default.fileExists(atPath: "/private/var/lib/apt/")
            || UIApplication.shared.canOpenURL(URL(string:"cydia://package/com.example.package")!) {
            return true
        }
        // Check 2 : Reading and writing in system directories (sandbox violation)
        let stringToWrite = "Jailbreak Test"
        do {
            try stringToWrite.write(toFile:"/private/JailbreakTest.txt", atomically:true, encoding:String.Encoding.utf8)
            //Device is jailbroken
            return true
        } catch {
            return false
        }
    }
    else {
        return false
    }
}

在 Appdelegate 方法中，编写如下代码

func applicationDidBecomeActive (_ application: UIApplication) {
    
    if getJailbrokenStatus() {
        let alert = UIAlertController(title: LocalizedKeys.Errors.jailbreakError, message: LocalizedKeys.Errors.jailbreakErrorMessage, preferredStyle: UIAlertController.Style.alert)
        let jailBrokenView = UIViewController()
        
        jailBrokenView.view.frame = UIScreen.main.bounds
        jailBrokenView.view.backgroundColor = .white
        self.window?.rootViewController = jailBrokenView
        jailBrokenView.present(alert, animated: true, completion: nil)
    }
    
    if #available(iOS 11.0, *) {
        if !UIScreen.main.isCaptured {
            DispatchQueue.main.async {
                self.blockImageView.removeFromSuperview()
            }
        }
    }
}