As a general rule, you really aren't going to be much use in meatspace combat as a technomancer without using rigging in some way, being a very specific type of Logic stream technomancer, or bombing your ability to do technomancy to the point that you really should have just been a mundane hacker. Can I ask why you're avoiding rigging?
The most useful thing you can do that's not rigging is going to be using Machine sprites to rig for you, followed by using Machine sprites to Diagnostics things your teammates use (eg, Diagnostics on a smartlinked gun for a bonus to shooting people).
If your opponents are very, very dumb you can make a nuisance of yourself by hacking their stuff, but if they aren't brain-damaged you are probably not going to be able to hack them on the time-scale of a combat. In the event that your opponents ARE that stupid, what you want for combat hacking is not malware, but Spoof. If they're dumb enough to not be running in Hidden (and especially if they are dumb enough to have wireless enabled on things like their cyberware that really, really shouldn't be online) you can Spoof them to make them waste actions.
Other things to check out: the technomancers in the first link of my sig, and Squee's hacking example
here.
