Youngster Timothy Muyanja gave Buffaloes a half-time lead after scoring three penalties but Kobs replied the same way.
Kobs 27 Buffaloes 14
Man of the match: Ramathan Govule (Kobs)
The Betway Kobs came from a 9-3 half time trail to defeat Toyota Buffaloes 27-14 in the Nile Special Premier Rugby League at Legends Rugby club on Friday.
Youngster Timothy Muyanja gave Buffaloes a half-time lead after scoring three penalties but Kobs replied the same way through James Ijongat.
In the second half, the hosts (Kobs) regrouped, making three substitutions of Ronald Musajja, Adnan Mutebi replacing Ambrose Kakuru and Victor Wadia respectively whose presence was felt.
Oscar Kalyango, Ronald Musajja and Alhajji Manano added a try each while Ijongat added a drop goal and conversion for Kobs to reclaim a 27-14 lead.
Ramsey Olinga sin binned Muyanja for stampeding on Oscar Kalyango while Robert Masinde was also sin binned for stampeding on Alhaji Manano.
Pirates sign partnership with Little Liz Bar
Meanwhile, Pirates have signed a partnership with little Liz Bar and Restaurant that has seen the club buy them a kit as they cement a long-term partnership.
Since parting ways with G4S Security Company, Pirates had not acquired a sponsor and for three seasons have been wearing the security company's kit.
The new signing is a big boost to a club that is rebuilding at a time it lost most of its players who went into retirement, according to coach Anthony Kinene.
"This is a big start for us and I am optimistic that this beginning will result into a long-lasting relationship that will see Pirates grow to its past glory."