114 lines
3.3 KiB
Ruby
114 lines
3.3 KiB
Ruby
# -*- coding: binary -*-
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require 'msf/base'
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module Msf
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module Simple
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module Evasion
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include Module
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def self.run_simple(oevasion, opts, &block)
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evasion = oevasion.replicant
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# Trap and print errors here (makes them UI-independent)
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begin
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# Clone the module to prevent changes to the original instance
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Msf::Simple::Framework.simplify_module( evasion, false )
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yield(evasion) if block_given?
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# Import options from the OptionStr or Option hash.
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evasion._import_extra_options(opts)
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# Make sure parameters are valid.
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if (opts['Payload'] == nil)
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raise MissingPayloadError.new, caller
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end
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# Verify the options
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evasion.options.validate(evasion.datastore)
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# Start it up
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driver = EvasionDriver.new(evasion.framework)
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# Initialize the driver instance
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driver.evasion = evasion
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driver.payload = evasion.framework.payloads.create(opts['Payload'])
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# Was the payload valid?
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if (driver.payload == nil)
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raise MissingPayloadError,
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"You specified an invalid payload: #{opts['Payload']}", caller
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end
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# Use the supplied encoder, if any. If one was not specified, then
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# nil will be assigned causing the evasion to default to picking the
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# best encoder.
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evasion.datastore['ENCODER'] = opts['Encoder'] if opts['Encoder']
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# Use the supplied NOP generator, if any. If one was not specified, then
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# nil will be assigned causing the evasion to default to picking a
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# compatible NOP generator.
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evasion.datastore['NOP'] = opts['Nop'] if opts['Nop']
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# Force the payload to share the evasion's datastore
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driver.payload.share_datastore(driver.evasion.datastore)
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# Verify the payload options
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driver.payload.options.validate(driver.payload.datastore)
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# Set the target and then work some magic to derive index
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evasion.datastore['TARGET'] = opts['Target'] if opts['Target']
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target_idx = evasion.target_index
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if (target_idx == nil or target_idx < 0)
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raise MissingTargetError,
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"You must select a target.", caller
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end
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driver.target_idx = target_idx
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# Set the payload and evasion's subscriber values
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if ! opts['Quiet']
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driver.evasion.init_ui(opts['LocalInput'] || evasion.user_input, opts['LocalOutput'] || evasion.user_output)
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driver.payload.init_ui(opts['LocalInput'] || evasion.user_input, opts['LocalOutput'] || evasion.user_output)
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else
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driver.evasion.init_ui(nil, nil)
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driver.payload.init_ui(nil, nil)
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end
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if (opts['RunAsJob'])
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driver.use_job = true
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end
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# Let's rock this party
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driver.run
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# Save the job identifier this evasion is running as
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evasion.job_id = driver.job_id
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# Propagate this back to the caller for console mgmt
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oevasion.job_id = evasion.job_id
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rescue ::Interrupt
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evasion.error = $!
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raise $!
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rescue ::Exception => e
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evasion.error = e
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evasion.print_error("evasion failed: #{e}")
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elog("Evasion failed (#{evasion.refname}): #{e}", 'core', LEV_0)
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dlog("Call stack:\n#{e.backtrace.join("\n")}", 'core', LEV_3)
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end
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nil
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end
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def run_simple(opts, &block)
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Msf::Simple::Evasion.run_simple(self, opts, &block)
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end
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end
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end
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end
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