The C-802, one of the best anti-ship cruise missiles in the world, was originally designed and built by China. Exported to Iran in the early 1990's, the Iranians made design changes and improvements, and apparently transferred some of these missiles to Hizballah.
It is thought that one such C-802 hit the "Hanit", an Israeli Saar 5-class missile ship enforcing the blockade of Lebanon on July 14, 2006, killing four sailors.
A BBC report during the war mentioned an announcement by Israel’s military forces that Iranian Revolutionary Guard advisors were present when the Hizballah launched their C-802 against the "Hanit". (see news.bbc.co)