You Do Need power plug adapter while traveling from Cocos (Keeling) Islands to Syria.

Here is Why You Need An Adapter

The outlet and plug type used in Syria are C, E and L and in Cocos (Keeling) Islands is I. This is how they look like.

Cocos (Keeling) Islands

In Cocos (Keeling) Islands, outlets of type I are in use.

Type I

Syria

In Syria, outlets of type C, E and L are in use.

Type C

Type E

Type L