Merge pull request #534 from peass-ng/update_PEASS-winpeas-SOAPwn__Pwning__NET_Framework_Applic_20251211_184735

[WINPEAS] Add privilege escalation check: SOAPwn Pwning .NET Framework Application...

winPEAS/winPEASexe/winPEAS/Checks/Checks.cs

@@ -88,6 +88,7 @@ namespace winPEAS.Checks
                 new SystemCheck("userinfo", new UserInfo()),
                 new SystemCheck("processinfo", new ProcessInfo()),
                 new SystemCheck("servicesinfo", new ServicesInfo()),
+                new SystemCheck("soapclientinfo", new SoapClientInfo()),
                 new SystemCheck("applicationsinfo", new ApplicationsInfo()),
                 new SystemCheck("networkinfo", new NetworkInfo()),
                 new SystemCheck("activedirectoryinfo", new ActiveDirectoryInfo()),

winPEAS/winPEASexe/winPEAS/Checks/SoapClientInfo.cs

@@ -0,0 +1,88 @@
+using System;
+using System.Collections.Generic;
+using winPEAS.Helpers;
+using winPEAS.Info.ApplicationInfo;
+
+namespace winPEAS.Checks
+{
+    internal class SoapClientInfo : ISystemCheck
+    {
+        public void PrintInfo(bool isDebug)
+        {
+            Beaprint.GreatPrint(".NET SOAP Client Proxies (SOAPwn)");
+
+            CheckRunner.Run(PrintSoapClientFindings, isDebug);
+        }
+
+        private static void PrintSoapClientFindings()
+        {
+            try
+            {
+                Beaprint.MainPrint("Potential SOAPwn / HttpWebClientProtocol abuse surfaces");
+                Beaprint.LinkPrint(
+                    "https://labs.watchtowr.com/soapwn-pwning-net-framework-applications-through-http-client-proxies-and-wsdl/",
+                    "Look for .NET services that let attackers control SoapHttpClientProtocol URLs or WSDL imports to coerce NTLM or drop files.");
+
+                List<SoapClientProxyFinding> findings = SoapClientProxyAnalyzer.CollectFindings();
+                if (findings.Count == 0)
+                {
+                    Beaprint.NotFoundPrint();
+                    return;
+                }
+
+                foreach (SoapClientProxyFinding finding in findings)
+                {
+                    string severity = finding.BinaryIndicators.Contains("ServiceDescriptionImporter")
+                        ? "Dynamic WSDL import"
+                        : "SOAP proxy usage";
+
+                    Beaprint.BadPrint($"    [{severity}] {finding.BinaryPath}");
+
+                    foreach (SoapClientProxyInstance instance in finding.Instances)
+                    {
+                        string instanceInfo = $"        -> {instance.SourceType}: {instance.Name}";
+                        if (!string.IsNullOrEmpty(instance.Account))
+                        {
+                            instanceInfo += $" ({instance.Account})";
+                        }
+                        if (!string.IsNullOrEmpty(instance.Extra))
+                        {
+                            instanceInfo += $" | {instance.Extra}";
+                        }
+
+                        Beaprint.GrayPrint(instanceInfo);
+                    }
+
+                    if (finding.BinaryIndicators.Count > 0)
+                    {
+                        Beaprint.BadPrint("        Binary indicators: " + string.Join(", ", finding.BinaryIndicators));
+                    }
+
+                    if (finding.ConfigIndicators.Count > 0)
+                    {
+                        string configLabel = string.IsNullOrEmpty(finding.ConfigPath)
+                            ? "Config indicators"
+                            : $"Config indicators ({finding.ConfigPath})";
+                        Beaprint.BadPrint("        " + configLabel + ": " + string.Join(", ", finding.ConfigIndicators));
+                    }
+
+                    if (finding.BinaryScanFailed)
+                    {
+                        Beaprint.GrayPrint("        (Binary scan skipped due to access/size limits)");
+                    }
+
+                    if (finding.ConfigScanFailed)
+                    {
+                        Beaprint.GrayPrint("        (Unable to read config file)");
+                    }
+
+                    Beaprint.PrintLineSeparator();
+                }
+            }
+            catch (Exception ex)
+            {
+                Beaprint.PrintException(ex.Message);
+            }
+        }
+    }
+}

winPEAS/winPEASexe/winPEAS/Helpers/MyUtils.cs

@@ -24,36 +24,51 @@ namespace winPEAS.Helpers
         ////////////////////////////////////
         /////// MISC - Files & Paths ///////
         ////////////////////////////////////
-        public static bool CheckIfDotNet(string path)
+        public static bool CheckIfDotNet(string path, bool ignoreCompanyName = false)
         {
             bool isDotNet = false;
-            FileVersionInfo myFileVersionInfo = FileVersionInfo.GetVersionInfo(path);
-            string companyName = myFileVersionInfo.CompanyName;
-            if ((string.IsNullOrEmpty(companyName)) ||
-                (!Regex.IsMatch(companyName, @"^Microsoft.*", RegexOptions.IgnoreCase)))
+            string companyName = string.Empty;
+
+            try
             {
-                try
+                FileVersionInfo myFileVersionInfo = FileVersionInfo.GetVersionInfo(path);
+                companyName = myFileVersionInfo.CompanyName;
+            }
+            catch
+            {
+                // Unable to read version information, continue with assembly inspection
+            }
+
+            bool shouldInspectAssembly = ignoreCompanyName ||
+                (string.IsNullOrEmpty(companyName)) ||
+                (!Regex.IsMatch(companyName, @"^Microsoft.*", RegexOptions.IgnoreCase));
+
+            if (!shouldInspectAssembly)
+            {
+                return false;
+            }
+
+            try
+            {
+                AssemblyName.GetAssemblyName(path);
+                isDotNet = true;
+            }
+            catch (System.IO.FileNotFoundException)
+            {
+                // System.Console.WriteLine("The file cannot be found.");
+            }
+            catch (System.BadImageFormatException exception)
+            {
+                if (Regex.IsMatch(exception.Message,
+                    ".*This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.*",
+                    RegexOptions.IgnoreCase))
                 {
-                    AssemblyName myAssemblyName = AssemblyName.GetAssemblyName(path);
                     isDotNet = true;
                 }
-                catch (System.IO.FileNotFoundException)
-                {
-                    // System.Console.WriteLine("The file cannot be found.");
-                }
-                catch (System.BadImageFormatException exception)
-                {
-                    if (Regex.IsMatch(exception.Message,
-                        ".*This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.*",
-                        RegexOptions.IgnoreCase))
-                    {
-                        isDotNet = true;
-                    }
-                }
-                catch
-                {
-                    // System.Console.WriteLine("The assembly has already been loaded.");
-                }
+            }
+            catch
+            {
+                // System.Console.WriteLine("The assembly has already been loaded.");
             }
 
             return isDotNet;

winPEAS/winPEASexe/winPEAS/Info/ApplicationInfo/SoapClientProxyAnalyzer.cs

@@ -0,0 +1,369 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Management;
+using System.Text;
+using winPEAS.Helpers;
+using winPEAS.Info.ProcessInfo;
+
+namespace winPEAS.Info.ApplicationInfo
+{
+    internal class SoapClientProxyInstance
+    {
+        public string SourceType { get; set; }
+        public string Name { get; set; }
+        public string Account { get; set; }
+        public string Extra { get; set; }
+    }
+
+    internal class SoapClientProxyFinding
+    {
+        public string BinaryPath { get; set; }
+        public List<SoapClientProxyInstance> Instances { get; } = new List<SoapClientProxyInstance>();
+        public HashSet<string> BinaryIndicators { get; } = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        public HashSet<string> ConfigIndicators { get; } = new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+        public string ConfigPath { get; set; }
+        public bool BinaryScanFailed { get; set; }
+        public bool ConfigScanFailed { get; set; }
+    }
+
+    internal static class SoapClientProxyAnalyzer
+    {
+        private class SoapClientProxyCandidate
+        {
+            public string BinaryPath { get; set; }
+            public string SourceType { get; set; }
+            public string Name { get; set; }
+            public string Account { get; set; }
+            public string Extra { get; set; }
+        }
+
+        private static readonly string[] BinaryIndicatorStrings = new[]
+        {
+            "SoapHttpClientProtocol",
+            "HttpWebClientProtocol",
+            "DiscoveryClientProtocol",
+            "HttpSimpleClientProtocol",
+            "HttpGetClientProtocol",
+            "HttpPostClientProtocol",
+            "ServiceDescriptionImporter",
+            "System.Web.Services.Description.ServiceDescriptionImporter",
+        };
+
+        private static readonly Dictionary<string, string> ConfigIndicatorMap = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
+        {
+            { "soap:address", "soap:address element present" },
+            { "soap12:address", "soap12:address element present" },
+            { "?wsdl", "?wsdl reference" },
+            { "<wsdl:", "WSDL schema embedded in config" },
+            { "servicedescriptionimporter", "ServiceDescriptionImporter referenced in config" },
+            { "system.web.services.description", "System.Web.Services.Description namespace referenced" },
+            { "new-webserviceproxy", "PowerShell New-WebServiceProxy referenced" },
+            { "file://", "file:// scheme referenced" },
+        };
+
+        private const long MaxBinaryScanSize = 200 * 1024 * 1024; // 200MB
+        private static readonly object DotNetCacheLock = new object();
+        private static readonly Dictionary<string, bool> DotNetCache = new Dictionary<string, bool>(StringComparer.OrdinalIgnoreCase);
+
+        public static List<SoapClientProxyFinding> CollectFindings()
+        {
+            var findings = new Dictionary<string, SoapClientProxyFinding>(StringComparer.OrdinalIgnoreCase);
+
+            foreach (var candidate in EnumerateServiceCandidates().Concat(EnumerateProcessCandidates()))
+            {
+                if (string.IsNullOrEmpty(candidate.BinaryPath) || !File.Exists(candidate.BinaryPath))
+                {
+                    continue;
+                }
+
+                if (!findings.TryGetValue(candidate.BinaryPath, out var finding))
+                {
+                    finding = new SoapClientProxyFinding
+                    {
+                        BinaryPath = candidate.BinaryPath,
+                    };
+
+                    findings.Add(candidate.BinaryPath, finding);
+                }
+
+                finding.Instances.Add(new SoapClientProxyInstance
+                {
+                    SourceType = candidate.SourceType,
+                    Name = candidate.Name,
+                    Account = string.IsNullOrEmpty(candidate.Account) ? "Unknown" : candidate.Account,
+                    Extra = candidate.Extra ?? string.Empty,
+                });
+            }
+
+            foreach (var finding in findings.Values)
+            {
+                ScanBinaryIndicators(finding);
+                ScanConfigIndicators(finding);
+            }
+
+            return findings.Values
+                .Where(f => f.BinaryIndicators.Count > 0 || f.ConfigIndicators.Count > 0)
+                .OrderByDescending(f => f.BinaryIndicators.Contains("ServiceDescriptionImporter"))
+                .ThenBy(f => f.BinaryPath, StringComparer.OrdinalIgnoreCase)
+                .ToList();
+        }
+
+        private static IEnumerable<SoapClientProxyCandidate> EnumerateServiceCandidates()
+        {
+            var results = new List<SoapClientProxyCandidate>();
+            try
+            {
+                using (var searcher = new ManagementObjectSearcher(@"root\\cimv2", "SELECT Name, DisplayName, PathName, StartName FROM Win32_Service"))
+                using (var services = searcher.Get())
+                {
+                    foreach (ManagementObject service in services)
+                    {
+                        string pathName = service["PathName"]?.ToString();
+                        string binaryPath = MyUtils.GetExecutableFromPath(pathName ?? string.Empty);
+                        if (string.IsNullOrEmpty(binaryPath) || !File.Exists(binaryPath))
+                            continue;
+
+                        if (!IsDotNetBinary(binaryPath))
+                            continue;
+
+                        results.Add(new SoapClientProxyCandidate
+                        {
+                            BinaryPath = binaryPath,
+                            SourceType = "Service",
+                            Name = service["Name"]?.ToString() ?? string.Empty,
+                            Account = service["StartName"]?.ToString() ?? string.Empty,
+                            Extra = service["DisplayName"]?.ToString() ?? string.Empty,
+                        });
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                Beaprint.GrayPrint("Error while enumerating services for SOAP client analysis: " + ex.Message);
+            }
+
+            return results;
+        }
+
+        private static IEnumerable<SoapClientProxyCandidate> EnumerateProcessCandidates()
+        {
+            var results = new List<SoapClientProxyCandidate>();
+            try
+            {
+                List<Dictionary<string, string>> processes = ProcessesInfo.GetProcInfo();
+                foreach (var proc in processes)
+                {
+                    string path = proc.ContainsKey("ExecutablePath") ? proc["ExecutablePath"] : string.Empty;
+                    if (string.IsNullOrEmpty(path) || !File.Exists(path))
+                        continue;
+
+                    if (!IsDotNetBinary(path))
+                        continue;
+
+                    string owner = proc.ContainsKey("Owner") ? proc["Owner"] : string.Empty;
+                    if (!IsInterestingProcessOwner(owner))
+                        continue;
+
+                    results.Add(new SoapClientProxyCandidate
+                    {
+                        BinaryPath = path,
+                        SourceType = "Process",
+                        Name = proc.ContainsKey("Name") ? proc["Name"] : string.Empty,
+                        Account = owner,
+                        Extra = proc.ContainsKey("ProcessID") ? $"PID {proc["ProcessID"]}" : string.Empty,
+                    });
+                }
+            }
+            catch (Exception ex)
+            {
+                Beaprint.GrayPrint("Error while enumerating processes for SOAP client analysis: " + ex.Message);
+            }
+
+            return results;
+        }
+
+        private static bool IsInterestingProcessOwner(string owner)
+        {
+            if (string.IsNullOrEmpty(owner))
+                return true;
+
+            string normalizedOwner = owner;
+            if (owner.Contains("\\"))
+            {
+                normalizedOwner = owner.Split('\\').Last();
+            }
+
+            return !normalizedOwner.Equals(Environment.UserName, StringComparison.OrdinalIgnoreCase);
+        }
+
+        private static bool IsDotNetBinary(string path)
+        {
+            lock (DotNetCacheLock)
+            {
+                if (DotNetCache.TryGetValue(path, out bool cached))
+                {
+                    return cached;
+                }
+
+                bool result = false;
+                try
+                {
+                    result = MyUtils.CheckIfDotNet(path, true);
+                }
+                catch
+                {
+                }
+
+                DotNetCache[path] = result;
+                return result;
+            }
+        }
+
+        private static void ScanBinaryIndicators(SoapClientProxyFinding finding)
+        {
+            try
+            {
+                FileInfo fi = new FileInfo(finding.BinaryPath);
+                if (!fi.Exists || fi.Length == 0)
+                    return;
+
+                if (fi.Length > MaxBinaryScanSize)
+                {
+                    finding.BinaryScanFailed = true;
+                    return;
+                }
+
+                foreach (var indicator in BinaryIndicatorStrings)
+                {
+                    if (FileContainsString(finding.BinaryPath, indicator))
+                    {
+                        finding.BinaryIndicators.Add(indicator);
+                    }
+                }
+            }
+            catch
+            {
+                finding.BinaryScanFailed = true;
+            }
+        }
+
+        private static void ScanConfigIndicators(SoapClientProxyFinding finding)
+        {
+            string configPath = GetConfigPath(finding.BinaryPath);
+            if (!string.IsNullOrEmpty(configPath) && File.Exists(configPath))
+            {
+                finding.ConfigPath = configPath;
+                try
+                {
+                    string content = File.ReadAllText(configPath);
+                    foreach (var kvp in ConfigIndicatorMap)
+                    {
+                        if (content.IndexOf(kvp.Key, StringComparison.OrdinalIgnoreCase) >= 0)
+                        {
+                            finding.ConfigIndicators.Add(kvp.Value);
+                        }
+                    }
+                }
+                catch
+                {
+                    finding.ConfigScanFailed = true;
+                }
+            }
+
+            string directory = Path.GetDirectoryName(finding.BinaryPath);
+            if (!string.IsNullOrEmpty(directory))
+            {
+                try
+                {
+                    var wsdlFiles = Directory.GetFiles(directory, "*.wsdl", SearchOption.TopDirectoryOnly);
+                    if (wsdlFiles.Length > 0)
+                    {
+                        finding.ConfigIndicators.Add($"Found {wsdlFiles.Length} WSDL file(s) next to binary");
+                    }
+                }
+                catch
+                {
+                    // ignore
+                }
+            }
+        }
+
+        private static string GetConfigPath(string binaryPath)
+        {
+            if (string.IsNullOrEmpty(binaryPath))
+                return string.Empty;
+
+            string candidate = binaryPath + ".config";
+            return File.Exists(candidate) ? candidate : string.Empty;
+        }
+
+        private static bool FileContainsString(string path, string value)
+        {
+            const int bufferSize = 64 * 1024;
+            byte[] pattern = Encoding.UTF8.GetBytes(value);
+            if (pattern.Length == 0)
+                return false;
+
+            try
+            {
+                using (var fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite | FileShare.Delete))
+                {
+                    byte[] buffer = new byte[bufferSize + pattern.Length];
+                    int bufferLen = 0;
+                    int bytesRead;
+                    while ((bytesRead = fs.Read(buffer, bufferLen, bufferSize)) > 0)
+                    {
+                        int total = bufferLen + bytesRead;
+                        if (IndexOf(buffer, total, pattern) >= 0)
+                        {
+                            return true;
+                        }
+
+                        if (pattern.Length > 1)
+                        {
+                            bufferLen = Math.Min(pattern.Length - 1, total);
+                            Buffer.BlockCopy(buffer, total - bufferLen, buffer, 0, bufferLen);
+                        }
+                        else
+                        {
+                            bufferLen = 0;
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                return false;
+            }
+
+            return false;
+        }
+
+        private static int IndexOf(byte[] buffer, int bufferLength, byte[] pattern)
+        {
+            int limit = bufferLength - pattern.Length;
+            if (limit < 0)
+                return -1;
+
+            for (int i = 0; i <= limit; i++)
+            {
+                bool match = true;
+                for (int j = 0; j < pattern.Length; j++)
+                {
+                    if (buffer[i + j] != pattern[j])
+                    {
+                        match = false;
+                        break;
+                    }
+                }
+
+                if (match)
+                    return i;
+            }
+
+            return -1;
+        }
+    }
+}

winPEAS/winPEASexe/winPEAS/winPEAS.csproj

@@ -1197,6 +1197,7 @@
     <Compile Include="Checks\NetworkInfo.cs" />
     <Compile Include="Checks\ProcessInfo.cs" />
     <Compile Include="Checks\ServicesInfo.cs" />
+    <Compile Include="Checks\SoapClientInfo.cs" />
     <Compile Include="Checks\SystemInfo.cs" />
     <Compile Include="Checks\UserInfo.cs" />
     <Compile Include="Checks\WindowsCreds.cs" />
@@ -1223,6 +1224,7 @@
     <Compile Include="Info\ApplicationInfo\ApplicationInfoHelper.cs" />
     <Compile Include="Info\ApplicationInfo\AutoRuns.cs" />
     <Compile Include="Info\ApplicationInfo\DeviceDrivers.cs" />
+    <Compile Include="Info\ApplicationInfo\SoapClientProxyAnalyzer.cs" />
     <Compile Include="Info\ApplicationInfo\InstalledApps.cs" />
     <Compile Include="Helpers\Beaprint.cs" />
     <Compile Include="Info\CloudInfo\AWSInfo.cs" />