Power Steering Pump Or Hydroboost

I developed a wine the other day , i have mushy brakes and really wines when pressed ,also does not turn well until idle is picked up ,but still has a wine , just wondering is the pump bad or hydroboost? Is it curable by flushing with synthetic atf ? I do have a extra pump i got for 40.00 , but if i can fix it without id be much happier , iv read about fluid in the hydroboost , can this be cleaned out somehow? thanx