The Mad Max DGA
This post describes a domain generation algorithm (DGA) used by the “Mad Max” malware family. Mad Max is a targeted trojan, and we plan to post a follow-up article that documents our findings regarding the features of the Mad Max malware itself. But for now we will focus on the reversing of its DGA, since […]SoftLayer’s Founder Aims to Build a Security-as-a-Service Powerhouse
Another startup, but this one claims 30,000 customers.
snaproute Go BGP Code Dive (5): Starting a Peer
Last time we looked at the snaproute BGP code, we discovered the peer bringup process is a finite state machine. With this in mind, let’s try to unravel the state machine into a set of calls, beginning from our original starting point, a debug message that prints on the screen when a new peering relationship is established. The key word in the debug message was ConnEstablished, which led to:
func (fsm *FSM) ConnEstablished() {
fsm.logger.Info(fmt.Sprintln("Neighbor:", fsm.pConf.NeighborAddress, "FSM", fsm.id, "ConnEstablished - start"))
fsm.Manager.fsmEstablished(fsm.id, fsm.peerConn.conn)
fsm.logger.Info(fmt.Sprintln("Neighbor:", fsm.pConf.NeighborAddress, "FSM", fsm.id, "ConnEstablished - end"))
}
From here, we searched for calls to ConnEstablished, and found—
func (fsm *FSM) ChangeState(newState BaseStateIface) {
...
if oldState == BGPFSMEstablished && fsm.State.state() != BGPFSMEstablished {
fsm.ConnBroken()
} else if oldState != BGPFSMEstablished && fsm.State.state() == BGPFSMEstablished {
fsm.ConnEstablished()
}
}
Looking for ChangeState leads us to a lot of different calls, but only one that seems to relate to establishing a new peer, as evidenced by a state that relates to established in some way. This, in turn, leads to—
func (st *OpenConfirmState) processEvent(event BGPFSMEvent, data Continue reading
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The post Unregenerate – The Week Gone By or To Come – 20160725 appeared first on EtherealMind.
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