Walking backwards down the stairs.
I don't know how so I would go with the specific methods that a few of the posters have described. But I know for an absolute certainty that you can get a good drum sound with one mic because I routinely used to do this, circa '82-'84. When I used to jam with my drumming buddy, we used a cassette recorder with a, what we always thought of as a, shitty inbuilt "mic" to record our jams. Every part of the drum kit was clear and you could hear the kick beautifully {I always loved Mick's hi hat and kick work}. It's not rose tinted nostalgia - I still have the tapes.
We never really thought about the quality of the drums, it's only recently that I've thought about this. Consequently, I can't remember where we'd place the 'box'. As far as I remember, it was usually at the other end of the room and the interesting thing is that the bass amp was always closer than the drums. Sometimes it was on a table, sometimes on the floor. When I eventually started multitracking, I was surprized that with a portastudio I couldn't get as good a drum sound as I could in the days when I never even thought about it ! So while I can't help you with specifics, I can encourage you that it can be done. As others have said, you'll have to experiment and work some. But you'll get there.