Posted inLabs and Lessons

JAWS – Just Another Windows (Enum) Script

Posted inLabs and Lessons

JAWS is PowerShell script designed to help penetration testers (and CTFers) quickly identify potential privilege escalation vectors on Windows systems. It is written using PowerShell 2.0 so ‘should’ run on every Windows version since Windows 7.

Usage:

Run from within CMD shell and write out to file.

CMD C:\temp> powershell.exe -ExecutionPolicy Bypass -File .\jaws-enum.ps1 -OutputFilename JAWS-Enum.txt

Run from within CMD shell and write out to screen.

CMD C:\temp> powershell.exe -ExecutionPolicy Bypass -File .\jaws-enum.ps1

Run from within PS Shell and write out to file.

PS C:\temp> .\jaws-enum.ps1 -OutputFileName Jaws-Enum.txt

Current Features

  • Network Information (interfaces, arp, netstat)
  • Firewall Status and Rules
  • Running Processes
  • Files and Folders with Full Control or Modify Access
  • Mapped Drives
  • Potentially Interesting Files
  • Unquoted Service Paths
  • Recent Documents
  • System Install Files
  • AlwaysInstallElevated Registry Key Check
  • Stored Credentials
  • Installed Applications
  • Potentially Vulnerable Services
  • MuiCache Files
  • Scheduled Tasks

Known Issues

  • Output for firewall rules can sometimes be clipped.
  • When running from within a shell the script doesnt always tell you its finished.
  • When running within some PowerShell reverse shells the running menu isnt shown.

jaws_enum.ps1

<#
.SYNOPSIS
Windows enumeration script
.DESCRIPTION
This script is designed to be used in a penetration test or CTF
enviroment. It will enumerate useful information from the host
for privilege escalation.
.EXAMPLE
PS > .\jaws-enum.ps1 
will write results out to screen.
.EXAMPLE
PS > .\jaws-enum.ps1 -OutputFileName Jaws-Enum.txt
Writes out results to Jaws-Enum.txt in current directory.
.LINK
https://github.com/411Hall/JAWS
#>
Param(
    [String]$OutputFilename = ""
)

function JAWS-ENUM {
    write-output "`nRunning J.A.W.S. Enumeration"
    $output = "" 
    $output = $output +  "############################################################`r`n"
    $output = $output +  "##     J.A.W.S. (Just Another Windows Enum Script)        ##`r`n"
    $output = $output +  "##                                                        ##`r`n"
    $output = $output +  "##           https://github.com/411Hall/JAWS              ##`r`n"
    $output = $output +  "##                                                        ##`r`n"
    $output = $output +  "############################################################`r`n"
    $output = $output +  "`r`n"
    $win_version = (Get-WmiObject -class Win32_OperatingSystem)
    $output = $output +  "Windows Version: " + (($win_version.caption -join $win_version.version) + "`r`n")
    $output = $output +  "Architecture: " + (($env:processor_architecture) + "`r`n")
    $output = $output +  "Hostname: " + (($env:ComputerName) + "`r`n")
    $output = $output +  "Current User: " + (($env:username) + "`r`n")
    $output = $output +  "Current Time\Date: " + (get-date)
    $output = $output +  "`r`n"
    $output = $output +  "`r`n"
    write-output "  - Gathering User Information"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Users`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $adsi = [ADSI]"WinNT://$env:COMPUTERNAME"
    $adsi.Children | where {$_.SchemaClassName -eq 'user'} | Foreach-Object {
        $groups = $_.Groups() | Foreach-Object {$_.GetType().InvokeMember("Name", 'GetProperty', $null, $_, $null)}
        $output = $output +  "----------`r`n"
        $output = $output +  "Username: " + $_.Name +  "`r`n"
        $output = $output +  "Groups:   "  + $groups +  "`r`n"
    }
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Network Information`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output + (ipconfig | out-string)
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Arp`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output + (arp -a | out-string) 
    $output = $output +  "`r`n"
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " NetStat`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output + (netstat -ano | out-string)
    $output = $output +  "`r`n"
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Firewall Status`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  "`r`n"
    $Firewall = New-Object -com HNetCfg.FwMgr
    $FireProfile = $Firewall.LocalPolicy.CurrentProfile  
    if ($FireProfile.FirewallEnabled -eq $False) {
        $output = $output +  ("Firewall is Disabled" + "`r`n")
        } else {
        $output = $output +  ("Firwall is Enabled" + "`r`n")
        }
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " FireWall Rules`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    Function Get-FireWallRule
    {Param ($Name, $Direction, $Enabled, $Protocol, $profile, $action, $grouping)
    $Rules=(New-object -comObject HNetCfg.FwPolicy2).rules
    If ($name)      {$rules= $rules | where-object {$_.name     -like $name}}
    If ($direction) {$rules= $rules | where-object {$_.direction  -eq $direction}}
    If ($Enabled)   {$rules= $rules | where-object {$_.Enabled    -eq $Enabled}}
    If ($protocol)  {$rules= $rules | where-object {$_.protocol   -eq $protocol}}
    If ($profile)   {$rules= $rules | where-object {$_.Profiles -bAND $profile}}
    If ($Action)    {$rules= $rules | where-object {$_.Action     -eq $Action}}
    If ($Grouping)  {$rules= $rules | where-object {$_.Grouping -like $Grouping}}
    $rules}
    $output = $output +  (Get-firewallRule -enabled $true | sort direction,applicationName,name | format-table -property Name , localPorts,applicationname | out-string)
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Hosts File Content`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  "`r`n"
    $output = $output + ((get-content $env:windir\System32\drivers\etc\hosts | out-string) + "`r`n")
    $output = $output +  "`r`n"
    write-output "  - Gathering Processes, Services and Scheduled Tasks"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Processes`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  ((Get-WmiObject win32_process | Select-Object Name,ProcessID,@{n='Owner';e={$_.GetOwner().User}},CommandLine | sort name | format-table -wrap -autosize | out-string) + "`r`n")
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Scheduled Tasks`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  "Current System Time: " + (get-date)
    $output = $output + (schtasks /query /FO CSV /v | convertfrom-csv | where { $_.TaskName -ne "TaskName" } | select "TaskName","Run As User", "Task to Run"  | fl | out-string)
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Services`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output + (get-service | Select Name,DisplayName,Status | sort status | Format-Table -Property * -AutoSize | Out-String -Width 4096)
    $output = $output +  "`r`n"
    write-output "  - Gathering Installed Software"
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Installed Programs`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  (get-wmiobject -Class win32_product | select Name, Version, Caption | ft -hidetableheaders -autosize| out-string -Width 4096)
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Installed Patches`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  (Get-Wmiobject -class Win32_QuickFixEngineering -namespace "root\cimv2" | select HotFixID, InstalledOn| ft -autosize | out-string )
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Program Folders`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output + "`n`rC:\Program Files`r`n"
    $output = $output +  "-------------"
    $output = $output + (get-childitem "C:\Program Files"  -EA SilentlyContinue  | select Name  | ft -hidetableheaders -autosize| out-string)
    $output = $output + "C:\Program Files (x86)`r`n"
    $output = $output +  "-------------------"
    $output = $output + (get-childitem "C:\Program Files (x86)"  -EA SilentlyContinue  | select Name  | ft -hidetableheaders -autosize| out-string)
    $output = $output +  "`r`n"
    write-output "  - Gathering File System Information"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Files with Full Control and Modify Access`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $files = get-childitem C:\
    foreach ($file in $files){
        try {
            $output = $output +  (get-childitem "C:\$file" -include *.ps1,*.bat,*.com,*.vbs,*.txt,*.html,*.conf,*.rdp,.*inf,*.ini -recurse -EA SilentlyContinue | get-acl -EA SilentlyContinue | select path -expand access | 
            where {$_.identityreference -notmatch "BUILTIN|NT AUTHORITY|EVERYONE|CREATOR OWNER|NT SERVICE"} | where {$_.filesystemrights -match "FullControl|Modify"} | 
            ft @{Label="";Expression={Convert-Path $_.Path}}  -hidetableheaders -autosize | out-string -Width 4096)
            }
        catch {
            $output = $output +   "`nFailed to read more files`r`n"
        }
        }

    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Folders with Full Control and Modify Access`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $folders = get-childitem C:\
    foreach ($folder in $folders){
        try {
            $output = $output +  (Get-ChildItem -Recurse "C:\$folder" -EA SilentlyContinue | ?{ $_.PSIsContainer} | get-acl  | select path -expand access |  
            where {$_.identityreference -notmatch "BUILTIN|NT AUTHORITY|CREATOR OWNER|NT SERVICE"}  | where {$_.filesystemrights -match "FullControl|Modify"} | 
            select path,filesystemrights,IdentityReference |  ft @{Label="";Expression={Convert-Path $_.Path}}  -hidetableheaders -autosize | out-string -Width 4096)
             }
        catch {
            $output = $output +  "`nFailed to read more folders`r`n"
        }
        }
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Mapped Drives`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  (Get-WmiObject -Class Win32_LogicalDisk | select DeviceID, VolumeName | ft -hidetableheaders -autosize | out-string -Width 4096)
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Unquoted Service Paths`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  (cmd /c  'wmic service get name,displayname,pathname,startmode |findstr /i "auto" |findstr /i /v "c:\windows\\" |findstr /i /v """')
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Recent Documents`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  (get-childitem "C:\Users\$env:username\AppData\Roaming\Microsoft\Windows\Recent"  -EA SilentlyContinue | select Name | ft -hidetableheaders | out-string )
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Potentially Interesting Files in Users Directory `r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  (get-childitem "C:\Users\" -recurse -Include *.zip,*.rar,*.7z,*.gz,*.conf,*.rdp,*.kdbx,*.crt,*.pem,*.ppk,*.txt,*.xml,*.vnc.*.ini,*.vbs,*.bat,*.ps1,*.cmd -EA SilentlyContinue | %{$_.FullName } | out-string)
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " 10 Last Modified Files in C:\User`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output + (Get-ChildItem 'C:\Users' -recurse -EA SilentlyContinue | Sort {$_.LastWriteTime} |  %{$_.FullName } | select -last 10 | ft -hidetableheaders | out-string)
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " MUICache Files`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    get-childitem "HKCU:\Software\Classes\Local Settings\Software\Microsoft\Windows\Shell\" -EA SilentlyContinue |
    foreach { $CurrentKey = (Get-ItemProperty -Path $_.PsPath)
       if ($CurrentKey -match "C:\\") {
          $output = $output + ($_.Property -join "`r`n")
       }
    }
    $output = $output +  "`r`n"
    $output = $output +  "`r`n"
    write-output "  - Looking for Simple Priv Esc Methods"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " System Files with Passwords`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $files = ("unattended.xml", "sysprep.xml", "autounattended.xml","unattended.inf", "sysprep.inf", "autounattended.inf","unattended.txt", "sysprep.txt", "autounattended.txt")
    $output = $output +  (get-childitem C:\ -recurse -include $files -EA SilentlyContinue  | Select-String -pattern "<Value>" | out-string)
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " AlwaysInstalledElevated Registry Key`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $HKLM = "HKLM:\SOFTWARE\Policies\Microsoft\Windows\Installer"
    $HKCU =  "HKCU:\SOFTWARE\Policies\Microsoft\Windows\Installer"
    if (($HKLM | test-path) -eq "True") 
    {
        if (((Get-ItemProperty -Path $HKLM -Name AlwaysInstallElevated).AlwaysInstallElevated) -eq 1)
        {
            $output = $output +   "AlwaysInstallElevated enabled on this host!"
        }
    }
    if (($HKCU | test-path) -eq "True") 
    {
        if (((Get-ItemProperty -Path $HKCU -Name AlwaysInstallElevated).AlwaysInstallElevated) -eq 1)
        {
            $output = $output +   "AlwaysInstallElevated enabled on this host!"
        }
    }
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Stored Credentials`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output + (cmdkey /list | out-string)
    $output = $output +  "`r`n"
    $output = $output +  "-----------------------------------------------------------`r`n"
    $output = $output +  " Checking for AutoAdminLogon `r`n"
    $output = $output + "-----------------------------------------------------------`r`n"
    $Winlogon = "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon"
    if (get-itemproperty -path $Winlogon -Name AutoAdminLogon -ErrorAction SilentlyContinue) 
        {
        if ((get-itemproperty -path $Winlogon -Name AutoAdminLogon).AutoAdminLogon -eq 1) 
            {
            $Username = (get-itemproperty -path $Winlogon -Name DefaultUserName).DefaultUsername
            $output = $output + "The default username is $Username `r`n"
            $Password = (get-itemproperty -path $Winlogon -Name DefaultPassword).DefaultPassword
            $output = $output + "The default password is $Password `r`n"
            $DefaultDomainName = (get-itemproperty -path $Winlogon -Name DefaultDomainName).DefaultDomainName
            $output = $output + "The default domainname is $DefaultDomainName `r`n"
            }
        }
    $output = $output +  "`r`n"
    if ($OutputFilename.length -gt 0)
       {
        $output | Out-File -FilePath $OutputFileName -encoding utf8
        }
    else
        {
        clear-host
        write-output $output
        }
}

if ($OutputFilename.length -gt 0)
    {
        Try 
            { 
                [io.file]::OpenWrite($OutputFilename).close()  
                JAWS-ENUM
            }
        Catch 
            { 
                Write-Warning "`nUnable to write to output file $OutputFilename, Check path and permissions" 
            }
    } 
else 
    {
    JAWS-ENUM
    }