fixes #306

Author: tux-mind

cSploit/src/org/csploit/android/net/metasploit/MsfExploit.java

@@ -175,7 +175,15 @@ private void retrieveInfos() throws IOException, RPCClient.MSFException {
       for(Map.Entry<Integer, String> e : ((Map<Integer,String>)res).entrySet()) {
         targets.add(e.getValue());
       }
-      currentTarget = targets.get((Integer)map.get("default_target"));
+      
+      Integer def = (Integer) map.get("default_target");
+      if(def != null) {
+        currentTarget = targets.get(def);
+      } else if(!targets.isEmpty()) {
+        currentTarget = targets.get(0);
+      } else {
+        currentTarget = null;
+      }
     }
 
     // get authors
@@ -224,7 +232,8 @@ public boolean launch() throws RPCClient.MSFException {
     try {
       Map<String,Object> opts = new HashMap<String, Object>();
 
-      opts.put("TARGET", currentTarget);
+      if(currentTarget != null)
+        opts.put("TARGET", currentTarget);
 
       Collection<Option> allOptions = new ArrayList<>(options);