This time it's against the currently "installed" version of Meterpeter
binaries. When Meterpreter is landed down the track we'll need to make
sure that the payload sizes are updated again.
Stageless payloads need to have the socket FD left along (ie. 0)
otherwise each of them will think that the socket is already open.
Instead we need to make sure it's left as 0 as per the configuration and
from there the stageless code will fire up a new socket based on the
transport in question.
Brent Cook
OJ