Logos语法
http://iphonedevwiki.net/index.php/Logos
- 1、新建Logos测试工程
- 2、用class-dump导出头文件
$class-dump -H 001-LogosDemo -o /Users/yaoqi/Desktop/LogosHeaders
class-dump 001-LogosDemo工程.png
- 3、新建Monkey工程,将Logos测试工程重签名
此时Monkey工程已经将libsubstrate.dylib库和RevealServer.framework库注入进去了,有了libsubstrate.dylib库就能写Logos语法了。
002-loginHookDemo工程Framework文件夹.png- 4、在Monkey中的Logos文件夹的.xm文件写Logos语法
Logos语法 | 功能解释 | 事例 |
---|---|---|
%hook | 需要hook哪个类 | %hook Classname |
%end | 代码块结束标记 | |
%group | 分组 | %group Groupname |
%new | 添加新方法 | %new(signature) |
%ctor | 构造函数 | %ctor { … } |
%dtor | 析构函数 | %dtor { … } |
%log | 输出打印 | %log; %log([(<type>)<expr>, …]); |
%orig | 保持原有方法 | %orig;%orig(arg1, …); |
_02_loginHookDemoDylib.xm
// See http://iphonedevwiki.net/index.php/Logos
#import <UIKit/UIKit.h>
@interface ViewController: UIViewController
- (void)presentViewController:(UIViewController *)viewControllerToPresent animated: (BOOL)flag completion:(void (^ __nullable)(void))completion NS_AVAILABLE_IOS(5_0);
+ (void)CL_classMethod;
@end
%hook ViewController
- (void)loginBtnClicked:(id)arg1 {
%log;
UIAlertController *alertVC = [UIAlertController alertControllerWithTitle:@"Hook成功了!!!" message:nil preferredStyle:(UIAlertControllerStyleAlert)];
[alertVC addAction:[UIAlertAction actionWithTitle:@"确定" style:(UIAlertActionStyleCancel) handler:nil]];
[self presentViewController:alertVC animated:YES completion:nil];
}
%new
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self.view endEditing:YES];
[self.class CL_classMethod];
}
%new
+ (void)CL_classMethod {
NSLog(@"这是一个类方法!!!");
}
%end
这里在ViewController中定义了一个方法presentViewController:animated:completion:,只是为了能编译通过,骗过Xcode编译器。
5、运行成功后,Monkey工程就能Hook到001-LogosDemo工程里面的loginBtnClicked:
Logos Hook Screen Shot.pngMonkey工程注入FLEX库
https://github.com/Flipboard/FLEX
- 1、在Monkey的Dylib动态库中注入FLEX库
在Monkey工程的根目录添加Podfile文件,Target为Monkey工程动态库的Target
# Uncomment the next line to define a global platform for your project
platform :ios, '9.0'
target '002-loginHookDemoDylib' do
use_frameworks!
pod 'FLEX'
end
- 2、界面展示
FLEX能查看App的文件、数据库、沙盒、界面层级。。。
Screen Shot 2018-05-15 at 下午10.53.49.png Screen Shot 2018-05-15 at 下午10.56.05.pngLogos练习
需求:在微信首页导航栏左边添加一个➕按钮,点击事件和右边按钮的点击效果一样。
-
1、新建Monkey工程,重签名微信包,并将FLEX注入进动态库中
-
2、Xcode界面调试,class-dump微信包,找到首页界面NewMainFrameViewController控制器
3、Xcode界面调试,找到微信导航栏右边按钮的点击的showRightTopMenuBtn方法
Target <NewMainFrameRightTopMenuBtn: 0x104dd99d0>
Action showRightTopMenuBtn
屏幕快照 2018-05-15 下午11.34.13.png
屏幕快照 2018-05-15 下午11.36.50.png
- 4、在内存中查找导航栏右边按钮视图层次
5、写代码实现需求
#import <UIKit/UIKit.h>
@interface NewMainFrameViewController :UIViewController
@end
@interface NewMainFrameRightTopMenuBtn: UIView
- (void)showRightTopMenuBtn;
@end
@interface MMBarButtonItem: UIBarButtonItem
@property(nonatomic,weak)NewMainFrameRightTopMenuBtn *view;
@end
%hook NewMainFrameViewController
-(UINavigationItem *)navigationItem{
// NSLog(@"\n\n\n-------------navigationItem-----");
//方法交换! 调用自己!
return %orig;
}
- (void)viewDidAppear:(_Bool)arg1{
%orig;
UIButton * leftBtn = [UIButton buttonWithType:(UIButtonTypeContactAdd)];
[leftBtn addTarget:self action:@selector(CL_leftClick) forControlEvents:(UIControlEventTouchUpInside)];
[self.navigationItem setLeftBarButtonItem: [[UIBarButtonItem alloc] initWithCustomView:leftBtn]];
}
- (void)viewDidLoad{
%orig;
// NSLog(@"\n\n\n-----viewDidLoad-----------");
}
%new
-(void)CL_leftClick
{
/**
从内存中能查到调用该方法:[self.navigationItem.rightBarButtonItem.view showRightTopMenuBtn]
self:代表NewMainFrameViewController控制器
*/
MMBarButtonItem *btn = self.navigationItem.rightBarButtonItem;
[btn.view showRightTopMenuBtn];
}
%end
Screen Shot 2018-05-16 at 上午12.00.58.png
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