Kulagong is an Asian fictional country which is the main setting of the 1975 film Paper Tiger.
Kulagong is based on Malaysia since this film was filmed in Malaysia.
The design is probably based on the Malaysian flag but without the blue canton one. Instead, the flag has a weird symbol at the centre on it.
Yewaire is a fictional country in Chinese movie Operation Red Sea (2018) which loosely based on Yemen since the film is loosely based on the evacuation of foreign nationals and almost 600 Chinese citizens from Yemen's southern port of Aden during late March in 2015 Yemeni Civil War.
Funny enough they pun Iranian symbol on the flag despite Yewaire is based on Yemen and put a star on it instead shaddah in original version
Majineg is a fictional country which is the main setting of the Chinese movie, Wolf Hiding (2023). Basically Majineg is a combination of Malaysia and Vietnam. Even the main language of this country is Malay with the Vietnamese alphabet (and some random alphabet).
The flag of Majineg can be seen inside the police station in Kûâlé Lömpûr, the capital city of Majineg. The design is really based on the Malaysian flag with different star and stripes.
Republic of Masraya is a fictional country which is a main setting for Malaysian political thriller series, Kudeta (2022) and Honey Trap (2025), the spin off of the main series.
Basically Masraya is just a satire reflection of Malaysia which is a multicultural country and full of political issues.
While there are no details about the meaning of Masraya flag design meaning, the flags are common across the series and there also have a banner flag which is shown in the first episode.