Rework exception handler for exploit simple

MSP-13233

lib/msf/base/simple/exploit.rb

@@ -154,6 +154,95 @@ module Exploit
     nil
   end
 
+
+  def setup_fail_detail_from_exception e
+    # Build a user-friendly error message
+    msg = "#{e}"
+    unless e.class == Msf::Exploit::Failed
+      msg = "#{e.class} #{e}"
+    end
+
+    self.error = e
+
+    # Record the detailed reason
+    self.exploit.fail_detail ||= e.to_s
+    msg
+  end
+
+  #
+  # Handle the exception
+  #
+  def handle_exception e
+    msg = setup_fail_detail_from_exception e
+
+    require 'pry'
+    binding.pry
+
+    case e
+      when Msf::Exploit::Complete
+        # Nothing to show in this case
+        return
+
+      when Msf::Exploit::Failed
+        self.print_error("Exploit aborted due to failure: #{self.fail_reason}: #{msg}")
+
+        # The caller should have already set self.fail_reason
+        if self.fail_reason == Msf::Exploit::Failure::None
+          self.fail_reason = Msf::Exploit::Failure::Unknown
+        end
+
+      when Rex::ConnectionError
+        self.fail_reason = Msf::Exploit::Failure::Unreachable
+        self.print_error("Exploit failed [#{self.fail_reason}]: #{msg}")
+        elog("Exploit failed (#{self.refname}): #{msg}", 'core', LEV_0)
+        dlog("Call stack:\n#{e.backtrace.join("\n")}", 'core', LEV_3)
+
+      when Timeout::Error
+        self.fail_reason = Msf::Exploit::Failure::TimeoutExpired
+        self.print_error("Exploit failed [#{self.fail_reason}]: #{msg}")
+        elog("Exploit failed (#{self.refname}): #{msg}", 'core', LEV_0)
+        dlog("Call stack:\n#{e.backtrace.join("\n")}", 'core', LEV_3)
+      else
+
+        # Compare as a string since not all error classes may be loaded
+        case msg
+          when /access.denied|Login Failed/i # Covers SMB as well as some generic errors
+            self.fail_reason = Msf::Exploit::Failure::NoAccess
+          when /connection reset/i
+            self.fail_reason = Msf::Exploit::Failure::Disconnected
+          when /connection timed out|SSL_connect|unreachable|connection was refused/i
+            self.fail_reason = Msf::Exploit::Failure::Unreachable
+          when /unable.*target/i
+            self.fail_reason = Msf::Exploit::Failure::NoTarget
+          when /execution expired/i
+            self.fail_reason = Msf::Exploit::Failure::TimeoutExpired
+          when /(doesn.t|not).*vulnerable|may.*patched/i
+            self.fail_reason = Msf::Exploit::Failure::NotVulnerable
+        end
+
+        # The caller should have already set self.fail_reason
+        if self.fail_reason == Msf::Exploit::Failure::None
+          self.fail_reason = Msf::Exploit::Failure::Unknown
+        end
+
+        if self.fail_reason == Msf::Exploit::Failure::Unknown
+          self.print_error("Exploit failed: #{msg}")
+        else
+          self.print_error("Exploit failed [#{self.fail_reason}]: #{msg}")
+        end
+
+        elog("Exploit failed (#{self.refname}): #{msg}", 'core', LEV_0)
+        dlog("Call stack:\n#{e.backtrace.join("\n")}", 'core', LEV_3)
+    end
+
+
+
+    # Record the error to various places
+    self.framework.events.on_module_error(self, msg)
+
+    # Report the failure (and attempt) in the database
+    self.report_failure
+  end
   #
   # Calls the class method.
   #

lib/msf/core/exploit_driver.rb

@@ -113,7 +113,6 @@ class ExploitDriver
   #   - Cleans up the handler
   #
   def run
-
     # First thing's first -- validate the state.  Make sure all requirement
     # parameters are set, including those that are derived from the
     # datastore.
@@ -164,6 +163,7 @@ class ExploitDriver
       # nothing should be able to modify their datastore or other
       # settings until after they're done.
       ctx = [ exploit, payload ]
+
       job_run_proc(ctx)
       job_cleanup_proc(ctx)
     end
@@ -187,18 +187,15 @@ class ExploitDriver
 
 protected
 
-
-
   #
   # Job run proc, sets up the exploit and kicks it off.
   #
   def job_run_proc(ctx)
-    # Default session wait time..
-    delay = payload.wfs_delay + exploit.wfs_delay
-    delay = nil if exploit.passive?
-
     begin
       exploit, payload = ctx
+      # Default session wait time..
+      delay = payload.wfs_delay + exploit.wfs_delay
+      delay = nil if exploit.passive?
 
       # Set the exploit up the bomb
       exploit.setup
@@ -208,88 +205,12 @@ protected
       # Launch the exploit
       exploit.exploit
 
-
-
     rescue ::Exception => e
-
       if [::RuntimeError, ::Interrupt].include?(e.class)
         # Wait for session, but don't wait long.
         delay = 0.01
       end
-
-      # Build a user-friendly error message
-      msg = "#{e}"
-      unless e.class == Msf::Exploit::Failed
-        msg = "#{e.class} #{e}"
-      end
-
-      exploit.error = e
-
-      # Record the detailed reason
-      exploit.fail_detail ||= e.to_s
-
-      case e
-      when Msf::Exploit::Complete
-        # Nothing to show in this case
-        return
-
-      when Msf::Exploit::Failed
-        exploit.print_error("Exploit aborted due to failure: #{exploit.fail_reason}: #{msg}")
-
-        # The caller should have already set exploit.fail_reason
-        if exploit.fail_reason == Msf::Exploit::Failure::None
-          exploit.fail_reason = Msf::Exploit::Failure::Unknown
-        end
-
-      when Rex::ConnectionError
-        exploit.fail_reason = Msf::Exploit::Failure::Unreachable
-        exploit.print_error("Exploit failed [#{exploit.fail_reason}]: #{msg}")
-        elog("Exploit failed (#{exploit.refname}): #{msg}", 'core', LEV_0)
-        dlog("Call stack:\n#{e.backtrace.join("\n")}", 'core', LEV_3)
-
-      when Timeout::Error
-        exploit.fail_reason = Msf::Exploit::Failure::TimeoutExpired
-        exploit.print_error("Exploit failed [#{exploit.fail_reason}]: #{msg}")
-        elog("Exploit failed (#{exploit.refname}): #{msg}", 'core', LEV_0)
-        dlog("Call stack:\n#{e.backtrace.join("\n")}", 'core', LEV_3)
-      else
-
-        # Compare as a string since not all error classes may be loaded
-        case msg
-        when /access.denied|Login Failed/i # Covers SMB as well as some generic errors
-          exploit.fail_reason = Msf::Exploit::Failure::NoAccess
-        when /connection reset/i
-          exploit.fail_reason = Msf::Exploit::Failure::Disconnected
-        when /connection timed out|SSL_connect|unreachable|connection was refused/i
-          exploit.fail_reason = Msf::Exploit::Failure::Unreachable
-        when /unable.*target/i
-          exploit.fail_reason = Msf::Exploit::Failure::NoTarget
-        when /execution expired/i
-          exploit.fail_reason = Msf::Exploit::Failure::TimeoutExpired
-        when /(doesn.t|not).*vulnerable|may.*patched/i
-          exploit.fail_reason = Msf::Exploit::Failure::NotVulnerable
-        end
-
-        # The caller should have already set exploit.fail_reason
-        if exploit.fail_reason == Msf::Exploit::Failure::None
-          exploit.fail_reason = Msf::Exploit::Failure::Unknown
-        end
-
-        if exploit.fail_reason == Msf::Exploit::Failure::Unknown
-          exploit.print_error("Exploit failed: #{msg}")
-        else
-          exploit.print_error("Exploit failed [#{exploit.fail_reason}]: #{msg}")
-        end
-
-        elog("Exploit failed (#{exploit.refname}): #{msg}", 'core', LEV_0)
-        dlog("Call stack:\n#{e.backtrace.join("\n")}", 'core', LEV_3)
-      end
-
-      # Record the error to various places
-      exploit.framework.events.on_module_error(exploit, msg)
-
-      # Report the failure (and attempt) in the database
-      exploit.report_failure
+      exploit.handle_exception e
     end
 
     # Wait the payload to acquire a session if this isn't a passive-style