IOS微信逆向-免越狱抢红包防撤回等自定义功能实现

微信砸壳

CrackerXI+砸壳，或手动使用dumpdecrypted砸壳

把已砸壳的wech使用scp或者助手at.ipa导出

monkeydev

MonkeyDev集成在xcode上面，可以快速开发hook的代码，链接到Mach-O文件，支持修改ipa后的免越狱安装。

新建MonkeyDev项目

把砸壳后的微信ipa拖进工程中的TargetApp目录

run编译真机调试

打开微信设置页面，xcode打开Debug View Hierarychy查看层级。

新增控件类WCTableViewManager 

%hook NewSettingViewController
- (void)reloadTableData{
    %orig;
    WCTableViewManager *tableViewMgr = MSHookIvar<id>(self, "m_tableViewMgr");
    MMTableView *tableView = [tableViewMgr getTableView];
    WCTableViewNormalCellManager *newCell = [%c(WCTableViewNormalCellManager) normalCellForSel:@selector(setting) target:self title:@"你懂的"];
    [((WCTableViewSectionManager*)tableViewMgr.sections[0]) addCell: newCell];
    [tableView reloadData];
}

%new
- (void)setting {
    UIViewController *vc = [[HZWechatSettingController alloc] init];
    [((UIViewController *)self).navigationController PushViewController:vc animated:true];
}

%end

新增自动抢红包、消息防撤回、微信步数修改选项

WCTableViewCellManager *autoEnvelopCell = [HZWechat switchCellWithSel:@selector(autoEnvelopSwitchChange:) target:self title:@"自动抢红包" switchOn:[HZWechatConfig autoRedEnvelop]];
[nidongde addCell:autoEnvelopCell];

WCTableViewCellManager *revokeIntercept = [HZWechat switchCellWithSel:@selector(revokeIntercept:) target:self title:@"消息防撤回" switchOn:[HZWechatConfig preventRevoke]];
[nidongde addCell:revokeIntercept];

WCTableViewCellManager *changeStepsCell = [HZWechat switchCellWithSel:@selector(changedSteps:) target:self title:@"修改微信步数" switchOn:[HZWechatConfig changeSteps]];
[nidongde addCell:changeStepsCell];

hook红包消息实现自动抢 

BOOL (^shouldReceiveRedEnvelop)() = ^BOOL() {
                    if (!HZWechatConfig.autoRedEnvelop) { return NO; }
                    if (isGroupInBlackList()) { return NO; }
                    if (isContaintKeyWords()) { return NO; }
                    return isGroupReceiver() ||
                           (isGroupSender() && isReceiveSelfRedEnvelop()) ||
                           (!isGroupReceiver() && HZWechatConfig.personalRedEnvelopEnable);
                };

                NSDictionary *(^parseNativeUrl)(NSString *nativeUrl) = ^(NSString *nativeUrl) {
                    nativeUrl = [nativeUrl substringFromIndex:[@"wxpay://c2cbizmessagehandler/hongbao/receivehongbao?" length]];
                    return [%c(WCBizUtil) dictionaryWithDecodedComponets:nativeUrl separator:@"&"];
                };

防撤回实现

%hook CMessageMgr
  - (void)onRevokeMsg:(CMessageWrap *)arg1 {

    if (HZWechatConfig.preventRevoke) {
        NSString *msgContent = arg1.m_nsContent;

        NSString *(^parseParam)(NSString *, NSString *,NSString *) = ^NSString *(NSString *content, NSString *paramBegin,NSString *paramEnd) {
            NSUInteger startIndex = [content rangeOfString:paramBegin].location + paramBegin.length;
            NSUInteger endIndex = [content rangeOfString:paramEnd].location;
            NSRange range = NSMakeRange(startIndex, endIndex - startIndex);
            return [content substringWithRange:range];
        };

        NSString *session = parseParam(msgContent, @"<session>", @"</session>");
        NSString *newmsgid = parseParam(msgContent, @"<newmsgid>", @"</newmsgid>");
        NSString *fromUsrName = parseParam(msgContent, @"<![CDATA[", @"撤回了一条消息");
        CMessageWrap *revokemsg = [self GetMsg:session n64SvrID:[newmsgid integerValue]];

        CContactMgr *contactMgr = [[objc_getClass("MMServiceCenter") defaultCenter] getService:objc_getClass("CContactMgr")];
        CContact *selfContact = [contactMgr getSelfContact];
        NSString *newMsgContent = @"";


        if ([revokemsg.m_nsFromUsr isEqualToString:selfContact.m_nsUsrName]) {
            if (revokemsg.m_uiMessageType == 1) {       // 判断是否为文本消息
                newMsgContent = [NSString stringWithFormat:@"拦截到你撤回了一条消息：\n %@",revokemsg.m_nsContent];
            } else {
                newMsgContent = @"拦截到你撤回一条消息";
            }
        } else {
            if (revokemsg.m_uiMessageType == 1) {
                newMsgContent = [NSString stringWithFormat:@"拦截到一条 %@撤回消息：\n %@",fromUsrName, revokemsg.m_nsContent];
            } else {
                newMsgContent = [NSString stringWithFormat:@"拦截到一条 %@撤回消息",fromUsrName];
            }
        }

        CMessageWrap *newWrap = ({
            CMessageWrap *msg = [[%c(CMessageWrap) alloc] initWithMsgType:0x2710];
            [msg setM_nsFromUsr:revokemsg.m_nsFromUsr];
            [msg setM_nsToUsr:revokemsg.m_nsToUsr];
            [msg setM_uiStatus:0x4];
            [msg setM_nsContent:newMsgContent];
            [msg setM_uiCreateTime:[arg1 m_uiCreateTime]];

            msg;
        });

        [self AddLocalMsg:session MsgWrap:newWrap fixTime:0x1 NewMsgArriveNotify:0x0];
        return;
    }
    %orig;
}

%end

修改微信运动步数

%hook WCDeviceStepObject
-(NSInteger)m7StepCount {
    NSInteger stepCount = %orig;
    NSInteger newStepCount = HZWechatConfig.changedSteps;

    return HZWechatConfig.changeSteps ? newStepCount : stepCount;
}

-(NSInteger)hkStepCount {
    NSInteger stepCount = %orig;
    NSInteger newStepCount = HZWechatConfig.changedSteps;

    return HZWechatConfig.changeSteps ? newStepCount : stepCount;
}

%end

自签名打包后实现多开，配合AltDeploy+AltStore食用更佳

 感谢