Hi Nickang and Tenere,
Unfortunately, the answer is a very clear and decisive NO GO!
If you only do a little research you will find out that the problem starts at the borders between Turkey and Syria with no clear authority on the Syrian side. Islamist rebels are said to hold up to 35 foreign journalists at this moment who have spent great efforts to avoid being kidnapped. Infighting has started in earnest between different rebel groups so chances are high you won't even make it to the area of Aleppo.
Getting a visa is probably next to impossible, the mistrust of the Syrian regime against any foreigner entering the country is extremely high and many have been detained even though they had valid professional visa and documents.
Could probably go on for page after page, but ... just forget about the idea!