How do I remove the top panel of masterbox lite 5 case?

[gmmichaeljiang]

Hi guys,
I am looking for a way to remove the top panel of the masterbox lite 5 case because I want to mod exhaust fans onto it. The screws are strange. They look something like hex but are round instead. Can anyone help?

 

[larrycumming]

easier to buy a new case with top holes

never liked those clear front panel cases with limited airflow

 

[gmmichaeljiang]

I removed the front panel so my aio cooler could have more airflow. I don't really care about looks and I didn't know that the top would be blocked of with no ventilation. Rn I don't have the budget of getting a new case. I just need to remove the top panel, mod it slightly and I would be all set. Those stupid screws just cant be taken off.