Harrison-Wells-Cyber-PS-Proxy/agent/loader/agent.ps1.tmpl

# PS-Proxy agent loader. Single-file, diskless managed assembly loader for Windows PowerShell 5.1.
param(
    [string]$Server = "{{.Server}}",
    [int]$Port = {{.Port}},
    [string]$CertPin = "{{.CertPin}}",
    [string]$EnrollToken = "{{.EnrollToken}}",
    [switch]$NoAutoStart
)
$ErrorActionPreference = "Stop"
function Import-PSProxyAgentAssembly {
    $b64 = @'
{{.AssemblyB64}}
'@
    if ([string]::IsNullOrWhiteSpace($b64) -or $b64.Trim().StartsWith("__")) {
        throw "This agent.ps1 has not been packaged with PSProxy.Agent.dll. Build release/agent.ps1 on Windows with tools/build-agent.ps1."
    }
    $compressed = [Convert]::FromBase64String($b64.Trim())
    $inputMs = New-Object IO.MemoryStream(,$compressed)
    $gzip = New-Object IO.Compression.GzipStream($inputMs, [IO.Compression.CompressionMode]::Decompress)
    $out = New-Object IO.MemoryStream
    $buf = New-Object byte[] 8192
    while (($n = $gzip.Read($buf, 0, $buf.Length)) -gt 0) { $out.Write($buf, 0, $n) }
    $gzip.Dispose(); $inputMs.Dispose()
    [void][System.Reflection.Assembly]::Load($out.ToArray())
}
function Start-PSTunnel {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory=$true)][string]$Server,
        [int]$Port = 443,
        [Parameter(Mandatory=$true)][string]$CertPin,
        [Parameter(Mandatory=$true)][string]$EnrollToken
    )
    if (-not ("PSProxy.Agent.Tunnel" -as [type])) { Import-PSProxyAgentAssembly }
    $t = New-Object PSProxy.Agent.Tunnel -ArgumentList @($Server, $Port, $CertPin, $EnrollToken)
    $t.Run()
}
if (-not $NoAutoStart) { Start-PSTunnel -Server $Server -Port $Port -CertPin $CertPin -EnrollToken $EnrollToken }