第一步

首先需要一个微信的ipa包。获取微信ipa一种是通过PP助手下载，另一种则是用一台越狱手机把里面的ipa给拿出来。网上相关资料有很多。

本文介绍的是使用PP助手下载微信越狱版本IPA。PP助手上的越狱微信ipa是已经砸过壳子的，使用起来比较方便，砸壳好像需要越狱手机如果没有越狱手机好像没有只有去pp助手下载越狱好的ipa了。附图weichat

weichat.png

2. 安装MonkeyDev

其实为什么安装MonkeyDev呢?MonkeyDev是集成与OpenDev的,但是OpenDev在13年就不在更新了,所以AloneMonkey就在此基础上做了进一步的更新,而且更加简单,更加傻瓜式.具体安装步骤可以查看原文博客.

MonkeyDev原文安装链接

安装完成之后,在新建项目的时候就会有如下的模块.

image.png

使用MonkeyDev创建动态调试工程

这时候我们就创建一个MonkeyApp工程出来.如下所示.

image.png

这个时候我们把下载好的微信ipa给放到如图，put ipa or app here这个文件不要删除留着

image.png
下面我们开始编写代码，首先在工程里面找到文件

image.png

CHDeclareClass(WCDeviceStepObject); // declare class


CHOptimizedMethod(0, self,  unsigned int, WCDeviceStepObject, m7StepCount) // hook method (with no arguments and no return value)
{

    int stepCount =  [[[NSUserDefaults  standardUserDefaults] objectForKey:@"StepCount"] intValue];

    NSLog(@"--stepCountstepCountstepCount---%d",stepCount);
    return stepCount; //这个是修改的步数。
}



CHConstructor // code block that runs immediately upon load
{
    @autoreleasepool
    {
        CHLoadLateClass(WCDeviceStepObject);
        CHHook(0, WCDeviceStepObject,m7StepCount);
    }
}

上面的 return stepCount; 这个是步数的值为int类型。我这里是做了一个手动输入框。进行动态修改、输入框代码,一下代码是打开app的时候会有一个弹框。

CHDeclareClass(NewMainFrameViewController)

CHMethod0(void,NewMainFrameViewController, viewDidLoad){
    NSLog(@"NewMainFrameViewControllerNewMainFrameViewControllerNewMainFrameViewController");
    
    GMAlertView *alertView = [[GMAlertView alloc]initWithFrame:CGRectMake(40, UIScreen.mainScreen.bounds.size.height /2.0f - 150, UIScreen.mainScreen.bounds.size.width - 80, 300)];
    [alertView baseXIB_showAlpha:.3 color:nil];
    
    CHSuper0(NewMainFrameViewController, viewDidLoad);
    
}

CHConstructor{
    CHLoadLateClass(NewMainFrameViewController);
    CHClassHook0(NewMainFrameViewController,viewDidLoad);
}

弹框代码.h

#import <UIKit/UIKit.h>

NS_ASSUME_NONNULL_BEGIN

@interface GMAlertView : UIView

@property (strong, nonatomic) UITextField *numField;
@property (strong, nonatomic) UILabel *numLable;

/** 添加一个背景View alpha透明度 color == nil lightGrayColor*/
- (void)baseXIB_showAlpha:(CGFloat)alpha color:(UIColor *)color;

@end

NS_ASSUME_NONNULL_END

弹框.m

#import "GMAlertView.h"
static NSInteger tag = 989898;

@implementation GMAlertView

- (instancetype)initWithFrame:(CGRect)frame{
    if (self =  [super initWithFrame:frame]) {
        self.backgroundColor =  [UIColor whiteColor];
        [self.layer setCornerRadius:8.0f];
        [self.layer setMasksToBounds:YES];
        
        self.numLable = [UILabel new];
        self.numLable.frame = CGRectMake(40, 10, UIScreen.mainScreen.bounds.size.width - 80, 50);
        self.numLable.textAlignment = NSTextAlignmentCenter;
        self.numLable.text = @"请输入要修改的步数，然后点击确定。然后进去搜索微信健康进入微信运动即可。由于需要上传更新步数需要时间，大约2-5分钟查询结果";
        self.numLable.numberOfLines =  0;
        [self addSubview:self.numLable];
        
        self.numField = [[UITextField alloc]init];
        self.numField.frame = CGRectMake(20, 70, frame.size.width - 40, 50);
        self.numField.backgroundColor = [UIColor groupTableViewBackgroundColor];
//        self.numLable.backgroundColor = [UIColor grayColor];
        self.numField.placeholder = @"请输入步数";
        self.numField.keyboardType = UIKeyboardTypeNumberPad;
        self.numField.textAlignment = NSTextAlignmentCenter;
//        self.numField.backgroundColor = [UIColor redColor];
//        self.numField.text  = @"1999";
        [self addSubview:self.numField];
        
        UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];
        btn.backgroundColor =  [UIColor redColor];
        [btn setTitle:@"确定" forState:UIControlStateNormal];
        btn.frame = CGRectMake(20, frame.size.height - 90, frame.size.width - 40, 50);
        [btn addTarget:self action:@selector(btnClick) forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:btn];
    }
    return self;
    
}

/** 添加一个背景View alpha透明度*/
- (void)baseXIB_showAlpha:(CGFloat)alpha color:(UIColor *)color{
    UIView *bgView= [[ UIView alloc]initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height)];
    
    bgView.backgroundColor = color ?color : [UIColor blackColor];
    bgView.alpha = alpha;
    bgView.tag = tag;
    UIWindow * wiondow = [[UIApplication sharedApplication].delegate window];
    [wiondow addSubview:bgView];
    [wiondow addSubview:self];
    
    [wiondow makeKeyWindow];
}

/** 移除视图 */
- (void)baseXIB_removeSubView{
    UIWindow * wiondow = [[UIApplication sharedApplication].delegate window];
    UIView *bgView = [wiondow  viewWithTag:tag];
    [bgView removeFromSuperview];
    [self removeFromSuperview];
}


- (void)btnClick{
    if ([self.numLable.text isEqualToString:@""]) {
        [[[UIAlertView alloc]initWithTitle:@"微信提示" message:@"请输入步数" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:nil, nil]show];
        return;
    }
    [[[UIAlertView alloc]initWithTitle:@"微信提示" message:@"修改成功请重新打开微信进入微信运动" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:nil, nil]show];
//    return;
    [[NSUserDefaults standardUserDefaults] setObject:self.numField.text forKey:@"StepCount"];
    [[NSUserDefaults standardUserDefaults] synchronize];
//    [self removeFromSuperview];
    [self baseXIB_removeSubView];

}

-  (IBAction)okBtn:(id)sender{
    
    [[NSUserDefaults standardUserDefaults] setObject:self.numField.text forKey:@"StepCount"];
    [[NSUserDefaults standardUserDefaults] synchronize];
    [self baseXIB_removeSubView];
    
    
}

-  (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    [self.numField endEditing:YES];
}

编写完成之后这里有个坑就是不让使用runtime库,修改如图位置即可,改为NO.