Get Known Wifi Networks Passwords PowerShell
Hello,
Have ever wanted to know the password you type on your laptop to connect to some wifi networks to be abe to connect your new one or your phone to it ? o you remember all the passwords of all your wifi networks you connected to with your laptop ? Probably not, but Windows do, and we can ask him.
You can get it with:
netsh wlan show profilesThis will display all the known wifi networks. You can then, for each of them, request the password:
netsh wlan show profile name=MyWifi key=clearThis will display detailed information about the network name “MyWifi”, including the security key.
If you want a more readable format, we need to use PowerShell:
netsh wlan show profile | Select-Object -Skip 3| Where-Object -FilterScript {($_ -like '*:*')} | ForEach-Object -Process {
$NetworkName = $_.Split(':')[-1].trim()
$PasswordDetection = $(netsh wlan show profile name =$NetworkName key=clear) | Where-Object -FilterScript {($_ -like '*contenu de la clé*') -or ($_ -like '*key content*')}
New-Object -TypeName PSObject -Property @{
NetworkName = $NetworkName
Password = if($PasswordDetection){$PasswordDetection.Split(':')[-1].Trim()}else{'Unknown'}
} -ErrorAction SilentlyContinue
}The netsh tool is sensitive about the language of the underlaying operating system, my code will work for French or English OS.
Get Known Wifi Networks Passwords PowerShell – Exemple
You’ll have one object per known wifi network.
Add the function to your PowerShell profile
Now, to get it very convenient, let’s put in in a function, and add it to our $profile:
Function Get-WifiPassword {
netsh wlan show profile | Select-Object -Skip 3| Where-Object -FilterScript {($_ -like '*:*')} | ForEach-Object -Process {
$NetworkName = $_.Split(':')[-1].trim()
$PasswordDetection = $(netsh wlan show profile name =$NetworkName key=clear) | Where-Object -FilterScript {($_ -like '*contenu de la clé*') -or ($_ -like '*keu content*')}
New-Object -TypeName PSObject -Property @{
NetworkName = $NetworkName
Password = if($PasswordDetection){$PasswordDetection.Split(':')[-1].Trim()}else{'Unknown'}
} -ErrorAction SilentlyContinue
}
}And paste it in:
ise $PROFILE.CurrentUserAllHostsIf you don’t have a profile yet, you can create one with:
New-Item -Path $profile.CurrentUserAllHosts -ItemType file -Force | Out-NullOnce you done that, you can call the function whenever you want, it will be available.
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Little typo in your script -> ‘keu content‘ needs to be ‘key content‘
You’re right, I updated the post. Thank you
Very useful, thanks for this. On a sidenote: there’s a typo in the script, it sais keu instead of key in the where-object filterscript. (and then the result is unknown instead of the password 😉
You’re right, I updated the post. Thank you
Unknown might be because of the type of the security key
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Hello, your script didn’t manage very well SSIDs with a space in it (returned an “Unknown” Key) where the command line returned one. I refactored it this way, and now it works 🙂
Thanks a lot for the advice, I never used PS to handle returns from legacy command line tools, and now I think I’ve the right toolkit to do so 🙂
Function Get-WifiPassword {
$WifiProfiles = $(netsh wlan show profile | Select-Object -Skip 3 | Where-Object -FilterScript {($_ -like ‘:‘)} | % { $.Split(‘:’)[-1].trim() })
$ReturnArray = @()
ForEach ($WifiProfile in $WifiProfiles) {
$Profile = ” | Select -Property Name,Key
$Key = $(netsh wlan show profile name = $WifiProfile key=clear) | Where-Object -FilterScript {($ -like ‘contenu‘) -or ($_ -like ‘key content‘)} | % { $_.Split(‘:’)[-1].trim() }
$Profile.Name = $WifiProfile
if ($Key -ne $null) {
$Profile.Key = $Key
} else {
$Profile.Key = “Unknown”
}
$ReturnArray += $Profile
}
$ReturnArray
}