well, the OP wants to take advantage of the high rate for BTC in Iran, the best thing you can do is the following:
1- take some cash with you to Iran
2- find someone in Iran at the market and as you are foreign  they will be happy to talk to you , and say hey i was trying to get a payment for some work i did in (Isfahan) that if you are in another city, and i don't have Iranian bank account, can you receive the payment for me and you will have some pocket money for your help, they will be more than happy to do so
good luck