Windows-Exploit-Suggester

Windows Exploit Suggester (WES-ng) parses systeminfo command output and matches the system configuration against known Windows vulnerabilities with available public exploits.

Installation

# Clone repository
git clone https://github.com/bitsadmin/wesng.git
cd wesng

# Install requirements
pip install -r requirements.txt

# Update vulnerability database
python wes.py --update

# Or download precompiled binary
wget https://github.com/bitsadmin/wesng/releases/download/v1/wes.exe

Basic Usage

Command	Description
python wes.py systeminfo.txt	Analyze systeminfo output and suggest exploits
python wes.py -u	Update WES vulnerability database
python wes.py --help	Display help information
python wes.py -i systeminfo.txt	Interactive mode to filter results
python wes.py --impact high systeminfo.txt	Filter by impact level
python wes.py --type local systeminfo.txt	Filter by exploit type

Gathering System Information

From Target Windows System

# Get full system information
systeminfo > systeminfo.txt

# Get details with specific queries
systeminfo /fo list > systeminfo.txt

# Get only OS version
systeminfo | find "OS Name"
systeminfo | find "System Boot Time"
systeminfo | find "Processor"

# Get installed hotfixes/patches
wmic qfe list brief /format:table
Get-HotFix | Format-Table

From Linux/Attacker Machine

# If you have RDP/WinRM access
winrm invoke Create http://schemas.dmtf.org/wbem/wscml/1/common -a @{__osVersion=$null} -r "ipaddress"

# Via psexec or other remote execution
psexec -i \\target cmd /c "systeminfo > C:\systeminfo.txt"

Analyzing with WES

Basic Analysis

# Analyze systeminfo.txt against database
python wes.py systeminfo.txt

# Interactive filtering
python wes.py -i systeminfo.txt

# Export results to CSV
python wes.py systeminfo.txt --output csv > results.csv

# Export results to Excel
python wes.py systeminfo.txt --output excel > results.xlsx

# Verbose output with exploitation details
python wes.py systeminfo.txt -v

Filtering Exploits

# Filter by impact level (Critical, Important, Moderate, Low)
python wes.py --impact Critical systeminfo.txt

# Filter by exploit type (local, remote)
python wes.py --type local systeminfo.txt

# Filter by specific CVE
python wes.py --cve CVE-2021-1732 systeminfo.txt

# Filter by KB number (installed patch)
python wes.py --kb KB5001635 systeminfo.txt

# Exclude specific CVEs
python wes.py --exclude CVE-2021-1732 systeminfo.txt

Database Management

Updating Vulnerability Database

# Update WES database from GitHub
python wes.py --update

# Check database version
python wes.py --version

# Force update (clean and redownload)
python wes.py --update --force

# Update from custom source
python wes.py --update --url https://custom-repo/exploits.csv

Database Inspection

# List all vulnerabilities in database
python wes.py --list

# Count total exploits
python wes.py --list | wc -l

# Search for specific CVE in database
python wes.py --list | grep CVE-2021-1732

# Export database to file
python wes.py --list > exploits.csv

Common Vulnerabilities and Exploits

Privilege Escalation CVEs

CVE-2021-1732 - Win32k Elevation of Privilege
Impact: HIGH - Local privilege escalation via CreateWindowEx

CVE-2021-21224 - Win32k Elevation of Privilege
Impact: CRITICAL - Privilege escalation without user interaction

CVE-2020-1054 - Win32k Privilege Escalation
Impact: HIGH - Exploitation via SetWindowLongPtr

CVE-2019-1215 - Win32k Elevation of Privilege
Impact: CRITICAL - Local privilege escalation vector

CVE-2019-1458 - Win32k Elevation of Privilege
Impact: CRITICAL - UAF vulnerability in Win32k subsystem

Remote Code Execution CVEs

CVE-2020-1472 - Zerologon (Netlogon RPC)
Impact: CRITICAL - Domain controller compromise via RPC

CVE-2021-44228 - Log4Shell (if vulnerable application installed)
Impact: CRITICAL - Remote code execution via Java logging

CVE-2022-26923 - Active Directory Kerberos Delegation
Impact: HIGH - Domain escalation via unconstrained delegation

Information Disclosure

CVE-2020-0787 - BITS Service RCE
Impact: HIGH - Privilege escalation via BITS

CVE-2021-34527 - PrintNightmare (Print Spooler)
Impact: CRITICAL - Remote code execution on print servers

Exploitation Workflow

Step 1: Gather System Information

# On target Windows system
systeminfo > C:\systeminfo.txt

# Copy to attacker machine
# scp user@target:C:/systeminfo.txt .

Step 2: Run WES Analysis

# Run initial analysis
python wes.py systeminfo.txt

# Example output:
# [*] Potential Vulnerabilities (23)
# ================================
# CVE-2021-1732 | Win32k EoP | Impact: High | Type: Local
# CVE-2021-21224 | Win32k EoP | Impact: Critical | Type: Local
# CVE-2019-1215 | Win32k EoP | Impact: Critical | Type: Local

Step 3: Prioritize Exploits

# Filter by critical/high impact only
python wes.py --impact Critical systeminfo.txt

# Filter for local privilege escalation exploits
python wes.py --type local systeminfo.txt

# Interactive mode to select exploits
python wes.py -i systeminfo.txt

Step 4: Find and Download Exploit Code

# Search Exploit-DB for CVE
searchsploit "CVE-2021-1732"

# Download exploit
searchsploit -m 49999

# Search GitHub for PoC
# https://github.com/search?q=CVE-2021-1732

# Manual compilation and execution
# Download source code and compile with Visual Studio or mingw
gcc exploit.c -o exploit.exe

Step 5: Verify Patch Level

# Check if specific KB (patch) is installed
wmic qfe list | find "KB5001635"

# List all installed patches
Get-HotFix | Select HotFixID, Description, InstalledOn

Output Interpretation

High Priority Indicators

[CRITICAL] CVE-2021-44228 - RCE in Log4j
  Type: Remote Code Execution
  Impact: Immediate system compromise
  Requires: Application to use vulnerable Log4j version

[CRITICAL] CVE-2020-1472 - Zerologon
  Type: Domain Controller Compromise
  Impact: Active Directory takeover
  Requires: Network access to DC on port 389

[HIGH] CVE-2021-1732 - Win32k Privilege Escalation
  Type: Local Privilege Escalation
  Impact: SYSTEM level access from user account
  Requires: Local code execution capability

Understanding WES Output

[*] Potential Vulnerabilities (45)
    CVE-ID | Vulnerability Title | Impact Level | Exploit Type

Impact Levels:
- Critical: Immediate system compromise possible
- Important: Significant security risk
- Moderate: Limited scope of impact
- Low: Minor security issue

Exploit Types:
- Local: Requires local code execution
- Remote: Exploitable over network
- Admin: Requires administrative privileges

Finding Exploit Code

Trusted Sources

# Exploit-DB (part of Kali Linux)
searchsploit "CVE-2021-1732"
searchsploit -m 49999  # Download exploit

# GitHub repositories
# https://github.com/search?type=code&q=CVE-2021-1732

# Security advisory pages
# https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1732

# Metasploit Framework
msfconsole
msf > search type:exploit CVE-2021-1732
msf > use exploit/windows/local/cve_2021_1732

Automation and Integration

Batch Processing Multiple Systems

#!/bin/bash
# Scan multiple systems and aggregate results

for target in $(cat targets.txt); do
    echo "[*] Scanning $target..."
    systeminfo > /tmp/systeminfo_${target}.txt 2>/dev/null
    python wes.py /tmp/systeminfo_${target}.txt > results_${target}.txt
done

# Aggregate critical findings
echo "[*] Critical Vulnerabilities:"
grep CRITICAL results_*.txt | sort | uniq

Integration with Metasploit

# Use WES to identify exploits available in Metasploit
python wes.py systeminfo.txt | grep -i "metasploit"

# Automatically check Metasploit for each CVE
for cve in $(python wes.py systeminfo.txt | grep CVE | awk '{print $1}'); do
    msfconsole -q -x "search $cve; exit"
done

Export and Reporting

# Generate JSON report
python wes.py systeminfo.txt --output json > report.json

# Parse JSON with jq
cat report.json | jq '.vulnerabilities[] | select(.impact=="Critical")'

# Generate CSV for Excel
python wes.py systeminfo.txt --output csv > results.csv

Best Practices

Before Running Exploits

1. Verify patch levels - Confirm system is actually vulnerable
2. Test in isolated environment - Try exploits on test systems first
3. Backup configurations - Document current system state
4. Update WES database - Ensure you have latest CVE information
5. Cross-reference sources - Verify CVE details from multiple sources

Documentation

# Document findings for remediation
python wes.py systeminfo.txt > vulnerability_audit_$(date +%Y%m%d).txt

# Include system details
systeminfo >> vulnerability_audit_$(date +%Y%m%d).txt

# Note missing patches and priority fixes
echo "Missing patches:" >> vulnerability_audit_$(date +%Y%m%d).txt
wmic qfe list brief | tail -n+2 >> vulnerability_audit_$(date +%Y%m%d).txt

Remediation Workflow

# After patching system, verify fix
systeminfo > systeminfo_after_patch.txt
python wes.py systeminfo_after_patch.txt

# Compare vulnerability counts before/after
echo "Before patch:"
python wes.py systeminfo.txt | grep "Potential Vulnerabilities"

echo "After patch:"
python wes.py systeminfo_after_patch.txt | grep "Potential Vulnerabilities"

Related Tools

• Seatbelt: .NET enumeration tool for Windows privilege escalation
• winPEAS: Comprehensive Windows enumeration script
• PowerUp: PowerShell privilege escalation enumeration
• Metasploit: Exploit framework with Windows vulnerability modules
• Searchsploit: Offline Exploit-DB search utility
• WMIC: Windows Management Instrumentation Command-line
• Get-HotFix: PowerShell cmdlet for patch enumeration

Complete Workflow Example

# Step 1: Setup
git clone https://github.com/bitsadmin/wesng.git
cd wesng
pip install -r requirements.txt
python wes.py --update

# Step 2: Gather system info from target
# (On target Windows system)
systeminfo > C:\temp\systeminfo.txt

# Step 3: Transfer to attacker machine
scp user@target:C:/temp/systeminfo.txt .

# Step 4: Analyze vulnerabilities
python wes.py systeminfo.txt

# Step 5: Filter critical vulnerabilities
python wes.py --impact Critical systeminfo.txt > critical.txt

# Step 6: Search for exploits
searchsploit "CVE-2021-1732"

# Step 7: Download and compile exploit
searchsploit -m 49999
gcc 49999.c -o exploit.exe

# Step 8: Transfer to target and execute
# (Verify privilege escalation)
whoami
./exploit.exe
whoami

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Last updated: March 2026 | GitHub