Aris took the lead after half an hour of play when Darcy Neto ghosted into the box and connected with a defence-splitting pass.
Ismael Blanco
made it 1-1 six minutes into the second half when he showed his alertness in the box to meet a dangerous cross on the half volley.AEK were looking to build on their last-minute victory over Panathinaikos in the cup during the week but Neto hadn't read the script, as he danced around the AEK defenders on the edge of the box after 75 minutes to curl a shot into the corner.
AEK's misery was compounded in stoppage time when new signing David Mateos received a second yellow card.
The result leaves AEK in fourth place on 33 points and Aris in fifth on 28.
At the other end of the table, faltering Iraklis achieved a vital 2-1 win at seemingly doomed Panserraikos.
Iraklis had waited all season for an away win and it couldn't have come at a more important time. Cameroonian forward Louis Ngwat-Mahop got the visitors off to a great start with a strike after 15 minutes.
Bogdan Mara doubled the lead with a successful penalty after 41 minutes.
Panserraikos revived hopes that they could get something from the game when Sales Leozinho scored on 55 minutes.
Iraklis, however, held on for the victory, which moves the Thessaloniki side up to seventh place on 26 points.
Panserraikos have now been cast adrift at the bottom of the table on 16 points.
Larissa moved two points clear of the Serres club with a 1-1 draw at Asteras Tripolis.
Sebastian Carrera had given the home side the lead in the 13th minute but Romeu Pereira equalised on 35 minutes.
The draw means that Asteras Tripolis are sitting on the edge of the relegation zone with Panionios on 21 points.
SOURCE: SPORTINGREECE