German-born Ghanaian teenager Aaron sensationally struck twice to send his season’s tally to 14.
The 18-year-old has now bagged 14 goals in 16 appearances for Daniel Petrowsky’s boys at the Wolfgang-Meyer.
Center-back Patric Pffeither played at the heart of defence for the home side.
Hannover 96, the visitors took the lead through a 24th minute penalty.
But Opoku, the skipper for the side levelled for the home side in the 43rd minute before steering them in the lead on the hour mark.
Opoku went into the game having scored 12 goals and he used the tie against the visitors to enhance his credentials.
The winger has been influential for the leaders and is fourth on the top scoring chart and is just 3 goals shy of the top scorer.
Also in the top scorers is Wolfsburg attacker Richmond Tachie who has 11 league goals.
Defender Daniel Owusu also featured in the game for Hamburg and was replaced in the 90th minute.
By El Akyereko