Iran has been exporting advanced Chinese anti-ship missiles for years. What makes you think they couldn’t copy them?
http://en.wikipedia.org/wiki/INS_Hanit
Iran is very cash strapped. They can’t even provide much for the average Iranian.
Even with help from the Russians, China and NorK, their ability to build weapons would be very limited.
It comes down to a choice of building a lot of cheap weapons or a few hi-tech ones. They probably can’t do both in a short period of time.