判断是否能打开越狱软件

利用URL Scheme来查看是否能够代开比如cydia这些越狱软件

    //Check cydia URL hook canOpenURL 来绕过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 URIWithString:]”

包名 可以用 frida-ps -Ua来查看, 然后更改生成的js路径脚本

 /** 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) {}
}

判断是否可以访问一些越狱的文件

越狱后会产生额外的文件，通过判断是否存在这些文件来判断是否越狱了，可以用fopen和FileManager两个不同的方法去获取

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 appfor(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) {}
}

关键词检测 ：JailBroken 及 JailBreak 等；

使用frida脚本简单干掉：

在启动就注入进去， -f是通过spawn,也就是重启apk注入js

frida -U -f 包名 --no-pause -l 过越狱检测.js

//越狱检测- 简单先将返回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 () {}
});