From 6b89145e8070f2bd88bbfe2e549b70fff8b727c7 Mon Sep 17 00:00:00 2001
From: evilsocket <evilsocket@gmail.com>
Date: Fri, 17 Nov 2017 15:07:25 +0100
Subject: [PATCH] Some fixes on recon and probing.

---
 .gitignore                   |  6 +++++-
 core/build.go                |  4 ----
 session/modules/net_probe.go |  4 ++--
 session/modules/net_recon.go | 11 +++++++++++
 4 files changed, 18 insertions(+), 7 deletions(-)
 delete mode 100644 core/build.go

diff --git a/.gitignore b/.gitignore
index b0a295f3..7897e143 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,7 @@
 *.cap
-bettercap
+*.sw*
+
+core/build.go
 net/oui_compiled.go
+bettercap
+bettercap.history
diff --git a/core/build.go b/core/build.go
deleted file mode 100644
index 64d2d315..00000000
--- a/core/build.go
+++ /dev/null
@@ -1,4 +0,0 @@
-package core
-const (
-  BuildDate = "2017-11-16 19:24"
-)
diff --git a/session/modules/net_probe.go b/session/modules/net_probe.go
index 78fb8977..ac30f435 100644
--- a/session/modules/net_probe.go
+++ b/session/modules/net_probe.go
@@ -65,7 +65,7 @@ func (p Prober) OnSessionEnded(s *session.Session) {
 	}
 }
 
-func (p *Prober) sendUDP(from net.IP, from_hw net.HardwareAddr, ip net.IP) {
+func (p *Prober) sendProbe(from net.IP, from_hw net.HardwareAddr, ip net.IP) {
 	name := fmt.Sprintf("%s:137", ip)
 	if addr, err := net.ResolveUDPAddr("udp", name); err != nil {
 		log.Errorf("Could not resolve %s.", name)
@@ -109,7 +109,7 @@ func (p *Prober) Start() error {
 						continue
 					}
 
-					p.sendUDP(from, from_hw, ip)
+					p.sendProbe(from, from_hw, ip)
 
 					if throttle > 0 {
 						time.Sleep(time.Duration(throttle) * time.Millisecond)
diff --git a/session/modules/net_recon.go b/session/modules/net_recon.go
index 4ad23312..39797709 100644
--- a/session/modules/net_recon.go
+++ b/session/modules/net_recon.go
@@ -91,6 +91,17 @@ func (d *Discovery) Start() error {
 					}
 
 					if len(new) > 0 || len(rem) > 0 {
+						n_gw_shared := 0
+						for ip, mac := range new {
+							if ip != d.Session.Gateway.IpAddress && mac == d.Session.Gateway.HwAddress {
+								n_gw_shared++
+							}
+						}
+
+						if n_gw_shared > 0 {
+							log.Warningf("WARNING: %d endpoints share the same MAC of the gateway, there're might be some IP isolation going on.\n", n_gw_shared)
+						}
+
 						// refresh target pool
 						for ip, mac := range new {
 							d.Session.Targets.AddIfNotExist(ip, mac)