Inside nullbind/Other-Projects: A Pentester's Personal Arsenal of Windows Security Scripts

Hook

Some of the most useful security tools don't come with documentation, installation guides, or even organized file structures—they come from a senior pentester's personal toolbox, dumped into a GitHub repo with a shrug.

Context

The penetration testing landscape is dominated by comprehensive frameworks: Metasploit modules, PowerShell Empire agents, and Cobalt Strike beacons. These tools are powerful, but they come with overhead—installation dependencies, learning curves, and sometimes problematic signatures that trigger defensive solutions. Scott Sutherland (nullbind), a principal security consultant known for his work on PowerUpSQL and contributions to NetSPI's research, created this repository as a personal dumping ground for one-off scripts that solve specific problems encountered during real engagements.

This collection represents a different philosophy: lightweight, standalone scripts that address gaps in existing tooling or automate tedious enumeration tasks. When you're on an engagement and need to quickly enumerate SQL Server service accounts across a domain, or you want a batch file that checks for specific privilege escalation vectors without loading a full PowerShell framework, this is where you turn. The repository isn't trying to be PowerSploit or Impacket—it's the equivalent of a mechanic's personal toolbox filled with specialty wrenches that solve problems the standard toolkit doesn't address efficiently.

Technical Insight

The repository's architecture—or deliberate lack thereof—reveals how experienced security practitioners actually work. Rather than building abstractions and unified interfaces, these scripts are pragmatic solutions to recurring problems. Take one of the more useful scripts, a privilege escalation enumeration batch file that checks for common Windows misconfigurations. The approach is instructive:

@echo off
echo Checking for unquoted service paths...
wmic service get name,displayname,pathname,startmode | findstr /i "auto" | findstr /i /v "C:\Windows\\" | findstr /i /v """

echo.
echo Checking for weak service permissions...
for /f "tokens=2 delims='='" %%a in ('wmic service get name /value') do (
    sc sdshow %%a | findstr /i "wd" > nul
    if not errorlevel 1 echo Service: %%a - May have weak permissions
)

echo.
echo Checking registry AutoRuns...
reg query HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
reg query HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

This isn't elegant code, but it's effective. The script chains native Windows utilities—WMIC, SC, REG—without requiring PowerShell execution policy bypasses or external dependencies. When you drop into a restricted environment where PowerShell is constrained but batch files execute freely, this approach becomes invaluable. The focus on WMIC and service control commands represents an understanding that Windows administrators often lock down PowerShell while leaving legacy administrative interfaces accessible.

The PowerShell scripts take a similar philosophy but leverage the language's capabilities for more complex enumeration. Several scripts focus on Active Directory reconnaissance, querying for service principal names, enumerating group memberships, and identifying delegation configurations—all without requiring specialized AD tools:

# Enumerate SPNs for potential Kerberoasting targets
$search = New-Object DirectoryServices.DirectorySearcher([ADSI]"")
$search.filter = "(&(objectCategory=person)(objectClass=user)(servicePrincipalName=*))"  
$results = $search.FindAll()

foreach($result in $results) {
    $userEntry = $result.GetDirectoryEntry()
    $userEntry | Select-Object @{Name="Username";Expression={$_.sAMAccountName}},
                               @{Name="SPNs";Expression={$_.servicePrincipalName}}
}

This approach uses the DirectorySearcher class directly rather than importing ActiveDirectory modules, which may not be available or may trigger monitoring. The script returns exactly what you need for identifying Kerberoasting candidates without the noise of comprehensive AD enumeration tools. It's faster, quieter, and requires no module imports.

What makes these scripts particularly useful is their focus on specific attack vectors that comprehensive frameworks sometimes overlook. One script automates the enumeration of SQL Server instances across a domain by querying DNS for SRV records, then attempts connections to identify instances with weak authentication. Another focuses on identifying local administrator group members across multiple systems, using WMI queries that fly under the radar of many security monitoring solutions.

The repository also includes scripts for parsing and pivoting through collected data. After dumping credentials or extracting configuration files, you often need quick parsing to identify valuable targets. Rather than loading full parsing libraries, these scripts use regex and string manipulation to extract specific information patterns—IP addresses, credentials, database connection strings—from configuration files or memory dumps.

The design pattern throughout is consistent: minimize dependencies, maximize compatibility, focus on information gathering over exploitation. These aren't tools for getting shells; they're tools for understanding the environment so you can make informed decisions about where to focus your actual exploitation efforts. In penetration testing methodology, this represents the difference between noisy automated scanning and targeted enumeration based on understanding the specific environment.

Gotcha

The repository's biggest limitation is inherent in its design: it's a personal collection, not a maintained project. File naming is inconsistent, many scripts lack headers explaining their purpose, and there's no unified documentation describing what each tool does or when to use it. You'll need to read through the code to understand functionality, which can be time-consuming when you're in the middle of an engagement. Some scripts contain hardcoded paths or assumptions about the environment that may not match your target, requiring modifications before use.

More significantly, these scripts represent a snapshot of techniques that were effective when written, but Windows security and detection capabilities evolve rapidly. Some enumeration approaches that once flew under the radar now trigger alerts in modern EDR solutions. The batch file approach of chaining WMIC and net commands, while useful in restricted environments, generates event logs that sophisticated defenders recognize as reconnaissance activity. You're trading framework signatures for well-known command patterns that security operations teams have learned to monitor. Additionally, Microsoft has deprecated WMIC in recent Windows builds, meaning scripts relying on it will require updates for newer environments. The repository doesn't indicate which scripts have been tested in modern environments or which may need adaptation.

Verdict

Use if you're an experienced penetration tester who needs lightweight, standalone scripts for specific enumeration tasks, especially in restricted environments where full frameworks aren't viable or would generate excessive alerts. These scripts shine when you need something quick that doesn't require PowerShell import, when you're working in environments with minimal tooling, or when you want to understand specific enumeration techniques without framework abstractions. They're particularly valuable if you're already familiar with Windows internals and can quickly assess which scripts fit your current engagement. Skip if you need production-ready tools with comprehensive documentation, active maintenance, and consistent interfaces. If you're learning penetration testing rather than applying existing knowledge, start with established frameworks like PowerSploit or Impacket that provide better learning resources and community support. Also skip if you're operating in modern, heavily-monitored environments where these reconnaissance patterns would immediately alert security teams—in those scenarios, you need more sophisticated tradecraft than these direct enumeration approaches provide.