Ok so I did some research on the case and it seems that my problem is kind of unique. So firstly, I have both Installer and Cydia. Secondly, WinSCP used to work up until today (with installer only and with cydia too!). I tried installing new version of OpenSSH from Cydia, got it to install but it didn't help. I also tried reinstalling it in installer before. I had Services app before having problems, but then I unistalled it. Now that I had problems I also tried reinstalling Services app and checking if OpenSSh is turned on. It is. I tried turning it off and on again, with no effect. I also have mobileTerminal (from cydia), maybe there are some commands I could use? Anyway, any help would be much appreciated.