#requires -Version 5.1
<#
-------------------------------------------------------
TALON.PS1 v2026.6.5.30
(c) 2026-Present Raven Technologies Group LLC
-------------------------------------------------------

    /!\ ARE YOU LOST?
    -----------------
    You might have accidentally stumbled upon this
    when trying to download Talon. If so, that is okay.
    Here is the proper link:
      https://raventechnologiesgroup.com/explore#talon

This is a PowerShell script for running Talon via
PowerShell, rather than the manual method of
downloading then running the EXE.

The correct way to run this script is as follows:

    irm https://debloat.win | iex

-------------------------------------------------------
             /!\ CODE PAST THIS POINT! /!\
-------------------------------------------------------
#>
Set-StrictMode -Version Latest
$ErrorActionPreference = 'Stop'

function Fail {
	param([string]$Message,[int]$Code=1)
	Write-Host $Message -ForegroundColor Red
	cmd /c pause > $null
	exit $Code
}

function Ensure-Admin {
	if (([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()
		).IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)) { return }
	$script = $PSCommandPath
	if (-not $script) { Fail "Not elevated. Open PowerShell as Administrator then try again." }
	try {
		Start-Process -FilePath "powershell.exe" -ArgumentList "-NoProfile","-ExecutionPolicy","Bypass","-File",$script -Verb RunAs
		exit
	} catch {
		Fail "Elevation failed or was cancelled. Right-click PowerShell and select Run as administrator, then re-run this script."
	}
}

function New-TalonTempFolder {
	param([string]$BasePath)

	$folder = Join-Path $BasePath "temporary_folder_for_talon"

	try {
		if (-not (Test-Path -LiteralPath $folder)) {
			New-Item -ItemType Directory -Path $folder -Force | Out-Null
		}

		return $folder
	} catch {
		Fail "Failed to create temporary Talon folder."
	}
}

function Add-DefenderExclusionSafe {
	param([string]$Path)
	try {
		Add-MpPreference -ExclusionPath $Path
	} catch {
		Fail "Failed to add Windows Defender exclusion."
	}
}

function Remove-DefenderExclusionSafe {
	param([string]$Path)
	try {
		Remove-MpPreference -ExclusionPath $Path
	} catch {}
}

function Download-Zip {
	param([string]$Url,[string]$OutFile)
	try {
		Invoke-WebRequest -Uri $Url -OutFile $OutFile -TimeoutSec 120
		if (-not (Test-Path -LiteralPath $OutFile) -or (Get-Item -LiteralPath $OutFile).Length -le 0) {
			Fail "Download completed but file is empty. Check connectivity and retry."
		}
	} catch {
		Fail "Failed to download from $Url. Check your internet connection or firewall and try again."
	}
}

function Verify-FileHash {
	param(
		[string]$Path,
		[string]$ExpectedHash
	)

	try {
		if (-not (Test-Path -LiteralPath $Path)) {
			Fail "Downloaded file not found for hash verification."
		}

		$actual = (Get-FileHash -LiteralPath $Path -Algorithm SHA256).Hash.ToLower()
		$expected = $ExpectedHash.ToLower()

		if ($actual -ne $expected) {
			try { Remove-Item -LiteralPath $Path -Force } catch {}
			Fail "Integrity verification failed. The downloaded file may have been tampered with. Please report this to Raven Technologies Group."
		}
	} catch {
		Fail "Failed to verify file integrity."
	}
}

function Extract-Zip {
	param([string]$ZipPath,[string]$Destination)
	try {
		if (Test-Path -LiteralPath $Destination) {
			Remove-Item -LiteralPath $Destination -Recurse -Force
		}
		Expand-Archive -Path $ZipPath -DestinationPath $Destination -Force
		Remove-Item -LiteralPath $ZipPath -Force
	} catch {
		Fail "Failed to extract the archive. The ZIP may be corrupt. Re-run the script."
	}
}

function Find-Exe {
	param([string]$Root)

	$paths = @(
		(Join-Path $Root "Talon.exe"),
		(Join-Path $Root "Talon\Talon.exe")
	)

	foreach ($p in $paths) {
		if (Test-Path -LiteralPath $p) {
			return $p
		}
	}

	Fail "Talon.exe not found in expected locations."
}

function Stage-Exe {
	param([string]$Source,[string]$Dest)
	try {
		Copy-Item -LiteralPath $Source -Destination $Dest -Force
		if ((Get-Item -LiteralPath $Dest).Length -le 0) { Fail "Staged Talon.exe is empty. Aborting." }
	} catch {
		Fail "Failed to stage Talon.exe in the TEMP directory. Check permissions or disk space and retry."
	}
}

function Wait-AnyKey {
	param([string]$Prompt)
	if ($Prompt) { Write-Host $Prompt }
	cmd /c pause > $null
}

function Run-Talon {
	param([string]$ExePath)
	try {
		$proc = Start-Process -FilePath $ExePath -PassThru -WindowStyle Hidden
		$proc.WaitForExit()
		if ($proc.ExitCode -ne 0) { Fail "Talon exited with code $($proc.ExitCode). Review logs or retry." }
	} catch {
		Fail "Failed to execute Talon.exe. Ensure security software allows it and try again."
	}
}

function Cleanup {
	param([string[]]$Paths)
	foreach ($p in $Paths) {
		try {
			if (Test-Path -LiteralPath $p) {
				Remove-Item -LiteralPath $p -Recurse -Force
			}
		} catch {}
	}
}

Write-Host @"
######################         ########            ######                ###################     #######          #####
        ######                ##########           ######               #######       #######    ########         #####
        ######               ############          ######               ######         ######    ##########       #####
        ######              ######  #####          ######               ######         ######    ###########      #####
        ######             ######    #####         ######               ######         ######    ###### #####     #####
        ######             ######    ######        ######               ######         ######    ######  ######   #####
        ######            ######      ######       ######               ######         ######    ######    #####  #####
        ######           ######       #######      ######               ######         ######    ######     ##### #####
        ######           ####################      ######               ######         ######    ######      ##########
        ######          ######################     ######               ######         ######    ######        ########
        ######         ######            ######    ######               #######       #######    ######         #######
        ######        ######              ######   ##################    ###################     ######          ######

                                         (c) 2026 Raven Technologies Group, LLC                                        

         Talon is open source. The source code is publicly available at: https://github.com/ravendevteam/talon         

"@

Ensure-Admin

$base = $env:TEMP
$temp = New-TalonTempFolder -BasePath $base

$zip = Join-Path $temp "talon.zip"
$extract = Join-Path $temp "extracted"
$exe = Join-Path $temp "Talon.exe"

Write-Host "A temporary exclusion is made to the folder where Talon was downloaded. This exclusion prevents interference mid-process which may cause problems. This exclusion is removed after Talon is complete."
Add-DefenderExclusionSafe -Path $temp

Write-Host "Downloading Talon... This may take a few moments. The blue bar at the top indicates the download's progress."
Download-Zip -Url "https://dl.raventechnologiesgroup.com/get?f=Talon%2FTalon.zip&k=Is6CWx8h" -OutFile $zip
Write-Host ""
Write-Host "Verifying download..."
Verify-FileHash -Path $zip -ExpectedHash "9f1a0bb9ae2882dfded15a95e9099932774693078fe0dd2df1a18890dc6c011f"
Write-Host "Extracting and preparing to launch..."
Extract-Zip -ZipPath $zip -Destination $extract

$found = Find-Exe -Root $extract
Write-Host "Launching Talon..."
Write-Host "KEEP THIS WINDOW OPEN!" -ForegroundColor DarkYellow
Run-Talon -ExePath $found

Write-Host "Cleaning up leftover files..."
Cleanup -Paths @($temp)
Write-Host "Removing temporary exclusion..."
Remove-DefenderExclusionSafe -Path $temp

Write-Host "Complete. Thank you for using Talon." -ForegroundColor Green
Write-Host "NOTE: It is highly recommended to restart your system for all changes to apply!" -ForegroundColor Yellow
cmd /c pause > $null
exit