This term you is not specifically for You, this means for all overseas Pakistanis any person with money will go to the contractor in any Gulf region and will obtain the password by force, money and influence.
Bu contractor do you mean a pakistani working in Gulf region? How will this "any person with money" identify these overseas pakistanis? How will they get thier address? What if one of them reports him to the police?
I don't know what the exact specifics of overseas voting mechanism will be, but if it is online voting and 2 factor authentication is used, then passwords generated are only valid for 60 secs. So obtaining password lists will be useless. This person with money will literally need to stand over the voter to make sure he can influence him. I dont see that being very practical....you would need an army of people to do that.
By the way, UK, USA, Turkey, Japan, Spain and many other countries already allow overseas nationals to vote from abroad...and even India is recommending this change to be done for next elections. I'm sure we can figure it out as well.