Yes-- that's what it does. Nodes need to agree on a pre-shared AES key, a modulus, and a remainder, and with that information they can monitor the wifi network to locate Bunny frames.

I glanced over the "proposal.txt" file and I think a reasonable summary is as follows: Bunny monitors a wifi network to build a model of the types of common packets it "sees". Once it has built the model it can transmit data covertly by sending packets with a crafted length (based on a couple of pre-shared values) that are similar to the "average" traffic on the network. Bits of AES-encrypted data are stored in some of the various header and payload fields that are "sloppily" defined in the 802.11 standards. Other Bunny nodes are able to recognize these frames because their length modulus the pre-shared modulus value will equal the pre-shared remainder value.