My Macbook Pro is definitely hacked

easy, if you are this worried

immediately change all passwords on your accounts from ANOTHER computer, change your email one first

on your Mac, reboot holding down command+R, use disk utility to erase the HD and then install OSX on this drive

this will completely erase your HD, so anything and everything on it will be erased

Erasing the HD is sadly not an option for me.

What I need is a way to find these keyloggers, spywares and who-knows-what-they've installed without resetting the whole system.

You say this was solved, but I would point out that if you didn't actually erase the hard drive, you didn't solve the problem. There is no way to discover all changes that a malicious individual could make to your system, given unsupervised physical access. If you didn't erase the hard drive, whatever solution you tried may have made it seem like the problem is solved by removing the most obvious symptoms, but you cannot know that it actually is fixed. There could still be lingering backdoors, keyloggers, etc.

Why do you feel that erasing the hard drive is not an option?

Antonio --

Glad you came back to let us know what happened.

IMHO, Don't ever let him touch your computer again.

Your "friend" is not your friend.

Antonio --

You've done a great job of making lemonade out of lemons! I do agree that it may be helpful to get a heads up that doesn't come from an outside hacker. But that was cruel, and very unfriendly. So, I'm very glad you did get all squared away without losing your identity and credit info.

All the best.

Since this was a friend, crisis averted. And it's good that you're now more aware of security issues!

One thing I will point out, though, is that you need to be prepared to reinstall your system from scratch at any time. The need shouldn't come up often, but it can come up unexpectedly, for other reasons than just hacking. So be ready... make sure you have all the serial numbers, disks, etc for all that third-party software gathered together, so that if the need occurs, you're ready to respond with everything you will need. Otherwise, what is just a lengthy chore could turn into a nightmare lasting many days or even weeks of lost productivity.

But it would be good to know if there's some way to find out if someone's spying on me and track down those programs. Anyone knows how to do that?

I already answered that question earlier: there is no way. If you suspect that someone has had the kind of access required to install some kind of back door, or if you find that you are infected with malware known to provide back door access, the only possible response to ensure a clean system is to erase the hard drive.

Even with the console logs it's not really possible.

I should modify that a little, though... a true expert, with extremely deep knowledge of the system and armed with forensic investigation tools abd techniques, might be able to make a determination to some degree of confidence. But this would be costly and time-consuming, not to mention that there are very few people who are experts to the degree that would be necessary. Most techs wouldn't be able to do this... someone who has this kind of knowledge wouldn't be working as a basic tech.

I've been studying this stuff for years and have a fair bit of programming experience, and even so I wouldn't feel confident making such a determination. I would honestly refuse to do so, and would act on the same advice I've given you if I felt someone had hacked my machine.