 Hassan has made appearances in the 2004 AFC Asian Cup qualification, the 2004 AFC Asian Cup, the 2007 AFC Asian Cup qualification, the 2007 AFC Asian Cup, the 2011 AFC Asian Cup qualification and the 2015 AFC Asian Cup qualification.He scored a well-remembered goal in 2007 AFC Asian Cup qualification in a 2-1 win over the United Arab Emirates hence helping his team to qualify for the 2007 AFC Asian Cup.Badar Al-Maimani scored one and the only goal of Oman in the 2007 AFC Asian Cup in a 1-1 draw against Australia.