IOS - 越獄檢測 - Toy模板網(wǎng)

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判斷是否能打開越獄軟件

利用URL Scheme來查看是否能夠代開比如cydia這些越獄軟件

    //Check cydia URL hook canOpenURL 來繞過
    if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"cydia://package/com.avl.com"]])
    {
        return YES;
    }

    if([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"cydia://package/com.example.package"]])
    {
        return YES;
    }

 frida-trace -U -f 包名  -m  "+[NSURL URLWithString:]"

包名可以用 frida-ps -Ua來查看, 然后更改生成的js路徑腳本

 /*
 * Auto-generated by Frida. Please modify to match the signature of +[NSURL URLWithString:].
 * This stub is currently auto-generated from manpages when available.
 *
 * For full API reference, see: https://frida.re/docs/javascript-api/
 */

{
  /**
   * Called synchronously when about to call +[NSURL URLWithString:].
   *
   * @this {object} - Object allowing you to store state for use in onLeave.
   * @param {function} log - Call this function with a string to be presented to the user.
   * @param {array} args - Function arguments represented as an array of NativePointer objects.
   * For example use args[0].readUtf8String() if the first argument is a pointer to a C string encoded as UTF-8.
   * It is also possible to modify arguments by assigning a NativePointer object to an element of this array.
   * @param {object} state - Object allowing you to keep state across function calls.
   * Only one JavaScript function will execute at a time, so do not worry about race-conditions.
   * However, do not use this to store function arguments across onEnter/onLeave, but instead
   * use "this" which is an object for keeping state local to an invocation.
   */
  onEnter(log, args, state) {
	var URLName = ObjC.Object(args[2]);
	if(URLName.containsString_) {
		if(URLName.containsString_("http://") ||
		   URLName.containsString_("https://") ||
		   URLName.containsString_("file://")
		) {

		} else {
			if(URLName.containsString_("://")) {
				log(`+[NSURL URLWithString:]` + URLName);
				args[2] = ObjC.classes.NSString.stringWithString_("xxxxxx://");
			}
		}
	}

  },

  /**
   * Called synchronously when about to return from +[NSURL URLWithString:].
   *
   * See onEnter for details.
   *
   * @this {object} - Object allowing you to access state stored in onEnter.
   * @param {function} log - Call this function with a string to be presented to the user.
   * @param {NativePointer} retval - Return value represented as a NativePointer object.
   * @param {object} state - Object allowing you to keep state across function calls.
   */
  onLeave(log, retval, state) {
  }
}

判斷是否可以訪問一些越獄的文件

越獄后會產(chǎn)生額外的文件，通過判斷是否存在這些文件來判斷是否越獄了，可以用fopen和FileManager兩個不同的方法去獲取

BOOL fileExist(NSString* path)
{
    NSFileManager *fileManager = [NSFileManager defaultManager];
    BOOL isDirectory = NO;
    if([fileManager fileExistsAtPath:path isDirectory:&isDirectory]){
        return YES;
    }
    return NO;
}

BOOL directoryExist(NSString* path)
{
    NSFileManager *fileManager = [NSFileManager defaultManager];
    BOOL isDirectory = YES;
    if([fileManager fileExistsAtPath:path isDirectory:&isDirectory]){
        return YES;
    }
    return NO;
}

BOOL canOpen(NSString* path)
{
    FILE *file = fopen([path UTF8String], "r");
    if(file==nil){
        return fileExist(path) || directoryExist(path);
    }
    fclose(file);
    return YES;
}

 
 NSArray* checks = [[NSArray alloc] initWithObjects:@"/Application/Cydia.app",
                       @"/Library/MobileSubstrate/MobileSubstrate.dylib",
                       @"/bin/bash",
                       @"/usr/sbin/sshd",
                       @"/etc/apt",
                       @"/usr/bin/ssh",
                       @"/private/var/lib/apt",
                       @"/private/var/lib/cydia",
                       @"/private/var/tmp/cydia.log",
                       @"/Applications/WinterBoard.app",
                       @"/var/lib/cydia",
                       @"/private/etc/dpkg/origins/debian",
                       @"/bin.sh",
                       @"/private/etc/apt",
                       @"/etc/ssh/sshd_config",
                       @"/private/etc/ssh/sshd_config",
                       @"/Applications/SBSetttings.app",
                       @"/private/var/mobileLibrary/SBSettingsThemes/",
                       @"/private/var/stash",
                       @"/usr/libexec/sftp-server",
                       @"/usr/libexec/cydia/",
                       @"/usr/sbin/frida-server",
                       @"/usr/bin/cycript",
                       @"/usr/local/bin/cycript",
                       @"/usr/lib/libcycript.dylib",
                       @"/System/Library/LaunchDaemons/com.saurik.Cydia.Startup.plist",
                       @"/System/Library/LaunchDaemons/com.ikey.bbot.plist",
                       @"/Applications/FakeCarrier.app",
                       @"/Library/MobileSubstrate/DynamicLibraries/Veency.plist",
                       @"/Library/MobileSubstrate/DynamicLibraries/LiveClock.plist",
                       @"/usr/libexec/ssh-keysign",
                       @"/usr/libexec/sftp-server",
                       @"/Applications/blackra1n.app",
                       @"/Applications/IntelliScreen.app",
                       @"/Applications/Snoop-itConfig.app"
                       @"/var/lib/dpkg/info", nil];
    //Check installed app
    for(NSString* check in checks)
    {
        if(canOpen(check))
        {
            return YES;
        }
    }

 frida-trace -U -f 包名  -m  "-[NSFileManager fileExistsAtPath:]"

/*
 * Auto-generated by Frida. Please modify to match the signature of -[NSFileManager fileExistsAtPath:].
 * This stub is currently auto-generated from manpages when available.
 *
 * For full API reference, see: https://frida.re/docs/javascript-api/
 */

{
  /**
   * Called synchronously when about to call -[NSFileManager fileExistsAtPath:].
   *
   * @this {object} - Object allowing you to store state for use in onLeave.
   * @param {function} log - Call this function with a string to be presented to the user.
   * @param {array} args - Function arguments represented as an array of NativePointer objects.
   * For example use args[0].readUtf8String() if the first argument is a pointer to a C string encoded as UTF-8.
   * It is also possible to modify arguments by assigning a NativePointer object to an element of this array.
   * @param {object} state - Object allowing you to keep state across function calls.
   * Only one JavaScript function will execute at a time, so do not worry about race-conditions.
   * However, do not use this to store function arguments across onEnter/onLeave, but instead
   * use "this" which is an object for keeping state local to an invocation.
   */
  onEnter(log, args, state) {
	var fileName = ObjC.Object(args[2]);
	if(fileName.containsString_) {
		if(fileName.containsString_("apt") ||
	       fileName.containsString_("MobileSubstrate") ||
	       fileName.containsString_("Cydia") ||
	       fileName.containsString_("bash") ||
	       fileName.containsString_("ssh") ||
		   fileName.containsString_("/bin/sh") ||
	       fileName.containsString_("Applications") ||
		   fileName.containsString_("/bin/su") ||
		   fileName.containsString_("dpkg") 
	    ) {
			console.log('fileExistsAtPath called from:\n' +
				Thread.backtrace(this.context, Backtracer.ACCURATE)
					.map(DebugSymbol.fromAddress).join('\n') + '\n');
		   args[2] = ObjC.classes.NSString.stringWithString_("/xxxxxx");
		   log(`-[NSFileManager fileExistsAtPath: ${fileName}`);
	    }
	}
	//log(`-[NSFileManager fileExistsAtPath: ${fileName}`);
	
  },

  /**
   * Called synchronously when about to return from -[NSFileManager fileExistsAtPath:].
   *
   * See onEnter for details.
   *
   * @this {object} - Object allowing you to access state stored in onEnter.
   * @param {function} log - Call this function with a string to be presented to the user.
   * @param {NativePointer} retval - Return value represented as a NativePointer object.
   * @param {object} state - Object allowing you to keep state across function calls.
   */
  onLeave(log, retval, state) {

  }
}

關(guān)鍵詞檢測：JailBroken 及 JailBreak 等；

使用frida腳本簡單干掉：

在啟動就注入進(jìn)去， -f是通過spawn,也就是重啟apk注入js

frida -U -f 包名 --no-pause -l 過越獄檢測.js文章來源地址http://www.zghlxwxcb.cn/news/detail-507347.html

//越獄檢測- 簡單先將返回1的Nop掉
var resolver = new ApiResolver('objc');
resolver.enumerateMatches('*[* *Jailb*]', {
    onMatch: function (match) {
        let funcName = match.name;
        let funcAddr = match.address;
        Interceptor.attach(ptr(funcAddr), {
            onEnter: function (args) {

            }, onLeave: function (retval) {
                if (retval.toInt32() === 1) {
                    retval.replace(0);
                }
                console.log(funcName, retval);
            }
        });
    }, onComplete: function () {

    }
});
resolver.enumerateMatches('*[* *JailB*]', {
    onMatch: function (match) {
        let funcName = match.name;
        let funcAddr = match.address;
        Interceptor.attach(ptr(funcAddr), {
            onEnter: function (args) {

            }, onLeave: function (retval) {
                if (retval.toInt32() === 1) {
                    retval.replace(0);
                }
                console.log(funcName, retval);
            }
        });
    }, onComplete: function () {

    }
});
resolver.enumerateMatches('*[* *jailB*]', {
    onMatch: function (match) {
        let funcName = match.name;
        let funcAddr = match.address;
        Interceptor.attach(ptr(funcAddr), {
            onEnter: function (args) {

            }, onLeave: function (retval) {
                if (retval.toInt32() === 1) {
                    retval.replace(0);
                }
                console.log(funcName, retval);
            }
        });
    }, onComplete: function () {

    }
});