前言

[KNHook hookClass:@"ScanQRCodeLogicController"];// CGroupMgr        [KNHook hookClass:@"MsgImgFullScreenViewController"];// CGroupMgr

Nov  4 16:32:57 iPhone WeChat[7698] 
    
     : KNHooklog :-(void)PreScanQRCode(have 0 value)    return:(null)    object:
     
           ##########################################Nov  4 16:32:57 iPhone WeChat[7698] 
      
       : KNHooklog :-(id)initWithViewController:CodeType:(have 2 value)    return:(null)    value1:MsgImgFullScreenViewController-->
       
            value2:__NSCFNumber-->19    object:
        
       
      
     
    

信息分析

ScanQRCodeLogicController 的创建需要CodeType、MsgImgFullScreenViewController

群二维码CodeType = 19；

MsgImgFullScreenViewController的创建需要

方法分析

Nov  4 16:32:57 iPhone WeChat[7698] 
    
     : KNHooklog :-(void)doScanQRCode:(have 1 value)    return:(null)    value1:UIImage-->
     
          object:
      
     
    

在hopper 中分析方法

MsgImgFullScreenViewController PreScanQRCode

ScanBarcodeMgr

ScanQRCodeLogicController showScanResult

Nov  4 17:03:04 iPhone WeChat[7904] 
    
     : KNHooklog :-(void)initLogic:(have 1 value)    return:(null)    value1:CMessageWrap-->{m_uiMesLocalID=5, m_ui64MesSvrID=7576380165809270461, m_nsFromUsr=wxi*912~19, m_nsToUsr=wxi*o22~19, m_uiStatus=4, type=3, msgSource="
     
      
       664252360
              
      
       20:00-22:00;00:00-01:00
          
         "}     object:
     
    

Nov  4 17:03:04 iPhone WeChat[7904] 
    
     : KNHooklog :-(id)initWithMsgWrap:originFrame:soundable:snapshotView:needEdit:(have 5 value)    return:(null)    value1:CMessageWrap-->{m_uiMesLocalID=5, m_ui64MesSvrID=7576380165809270461, m_nsFromUsr=wxi*912~19, m_nsToUsr=wxi*o22~19, m_uiStatus=4, type=3, msgSource="
     
      
       664252360
              
      
       20:00-22:00;00:00-01:00
          
         "}     value2:NSConcreteValue-->NSRect: {
   {55, 371}, {96, 135}}    value3:__NSCFNumber-->1    value4:(null)-->(null)    value5:__NSCFNumber-->0
    

Nov  4 17:24:58 iPhone WeChat[7942] 
    
     : KNHooklog :-(void)PreviewImage:needEdit:(have 2 value)    return:(null)    value1:CMessageWrap-->{m_uiMesLocalID=6, m_ui64MesSvrID=3158388648458051522, m_nsFromUsr=z92*967~10, m_nsToUsr=wxi*o22~19, m_uiStatus=4, type=3, msgSource="
     
      
       664252365
              
      
       20:00-22:00;00:00-01:00
          
         "}     value2:__NSCFNumber-->0    object:
     
           ##########################################
     
    

void -[BaseMsgContentViewController PreviewImage:soundable:snapshotView:needEdit:](void * self, void * _cmd, void * arg2, char arg3, void * arg4, char arg5) {

一切从这里开始

stack[2019] = [[MMEmotionMsgBrowseViewController alloc] initWithMsgWrap:stack[2017]];    r7 = r7;    stack[2020] = [[stack[2007] navigationController] retain];    [stack[2020] PushViewController:stack[2019] animated:0x1, stack[1992], stack[1993], stack[1994], stack[1995], stack[1996]];