This function can be used to quickly retrieve all stored WiFi passwords on a Windows device

Get-WifiProfiles.ps1

<#
.SYNOPSIS
Retrieves stored WiFi profiles and their associated passwords from the local computer.

.DESCRIPTION
This function uses netsh commands to extract all saved WiFi profiles and their details including passwords (if available), authentication methods, and connection modes. It processes profiles in parallel for improved performance.

.OUTPUTS
System.Object[]
Returns an array of custom objects containing the following properties:
- ProfileName: The name of the WiFi profile
- Password: The network key/password (if available and retrievable)
- Authentication: The authentication method used (WPA2, WPA, etc.)
- ConnectionMode: The connection mode of the profile

.EXAMPLE
Get-WifiProfiles

.EXAMPLE
Get-WifiProfiles | Export-Csv -Path ".\wifi-profiles.csv" -NoTypeInformation

.NOTES
Requires:
- Administrative privileges
- Windows OS with WLAN services
- PowerShell 7+ for parallel processing

Author: Rogier Dijkman (azurekid)
Last Modified: 2025-05-08
Version: 1.0

.LINK
https://docs.microsoft.com/en-us/windows/win32/nativewifi/about-the-native-wifi-api

#>
Function Get-WifiProfiles {
    try {
        # Get all profiles in one call and parse more efficiently with regex
        $profilesOutput = (netsh wlan show profiles) -join "`n"
        $profileMatches = [regex]::Matches($profilesOutput, 'All User Profile\s+:\s+(.+)')
        
        
        $results = $profileMatches | ForEach-Object {
            $wifiprofile = $_.Groups[1].Value.Trim()
            
            $detailsOutput = (netsh wlan show profile name="$wifiprofile" key=clear) -join "`n"
            
            # Extract password with regex
            $passwordMatch = [regex]::Match($detailsOutput, 'Key Content\s+:\s+(.+)')
            $password      = if ($passwordMatch.Success) { $passwordMatch.Groups[1].Value.Trim() } else { $null }
            
            $ssidMatch       = [regex]::Match($detailsOutput, 'SSID name\s+:\s+"?([^"]+)"?')
            $authMatch       = [regex]::Match($detailsOutput, 'Authentication\s+:\s+(.+)')
            $encryptMatch    = [regex]::Match($detailsOutput, 'Cipher\s+:\s+(.+)')
            $connectionMatch = [regex]::Match($detailsOutput, 'Connection mode\s+:\s+(.+)')
            
            # Check if currently connected
            $interfaces = netsh wlan show interfaces
            
            [PSCustomObject]@{
                ProfileName    = $wifiprofile
                Password       = $password
                Authentication = if ($authMatch.Success) { $authMatch.Groups[1].Value.Trim() } else { "Unknown" }
                ConnectionMode = if ($connectionMatch.Success) { $connectionMatch.Groups[1].Value.Trim() } else { "Unknown" }
            }
        }
        
        return $results
    }
    catch {
        Write-Error "Failed to retrieve WiFi profiles: $_"
    }
}

Get-WifiProfiles