BlueSnap works with Pakistan. They also work with Skrill (moneybookers) if many of your clients are using their service to pay.
You may want to find out if some Russian payment processors accept Paypal. You can check find on the Paypal website some countries are able to receive money while others cannot, the exchange rate will be high though.
Paypal doesn't support in Pakistan and many other countries. You can take USA verified PayPal account. Many people sell this type services at very affordable prices.
Pakistan is not the only one, other countries are also in the loop. Why not sign up for other payment processors like 2Checkout,click2sell. . .and on and on. They will accept paypal payments from your buyers and then pay you as you like. Some, do charge little transaction fees anyway.