iOS逆向 微信屏蔽群消息

%hook CSyncBaseEvent

- (BOOL)BatchAddMsg:(BOOL)arg1 ShowPush:(BOOL)arg2
{
NSMutableArray *msgList = [self valueForKeyPath:@"m_arrMsgList"];
NSMutableArray *msgListResult = [self filtMessageWrapArr:msgList];
[self setValue:msgListResult forKeyPath:@"m_arrMsgList"];
return %orig;
}

%new
- (NSMutableArray *)filtMessageWrapArr:(NSMutableArray *)msgList
{
NSMutableArray *msgListResult = [msgList mutableCopy];
for (id msgWrap in msgList) {
Ivar nsFromUsrIvar = class_getInstanceVariable(objc_getClass("CMessageWrap"), "m_nsFromUsr");
NSString *m_nsFromUsr = object_getIvar(msgWrap, nsFromUsrIvar);
//如果包含群消息，则过滤掉
if ([m_nsFromUsr containsString:@"@"]) {
[msgListResult removeObject:msgWrap];
}
}
return msgListResult;
}

%end