hacksysteam-HackSysExtremeVulnerableDriver/Driver/Source/TypeConfusion.c

/*++

          ##     ## ######## ##     ## ########  
          ##     ## ##       ##     ## ##     ## 
          ##     ## ##       ##     ## ##     ## 
          ######### ######   ##     ## ##     ## 
          ##     ## ##        ##   ##  ##     ## 
          ##     ## ##         ## ##   ##     ## 
          ##     ## ########    ###    ########  

            HackSys Extreme Vulnerable Driver

Author : Ashfaq Ansari
Contact: ashfaq[at]payatu[dot]com
Website: http://www.payatu.com/

Copyright (C) 2011-2015 Payatu Technologies. All rights reserved.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.

THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS
OR COPYRIGHT HOLDERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

See the file 'LICENSE' for complete copying permission.

Module Name:
    TypeConfusion.c

Abstract:
    This module implements the functions to demonstrate
    Type Confusion vulnerability.

--*/

#include "TypeConfusion.h"

#ifdef ALLOC_PRAGMA
    #pragma alloc_text(PAGE, TriggerTypeConfusion)
    #pragma alloc_text(PAGE, TypeConfusionIoctlHandler)
    #pragma alloc_text(PAGE, TypeConfusionObjectCallback)
    #pragma alloc_text(PAGE, TypeConfusionObjectInitializer)
#endif // ALLOC_PRAGMA

#pragma auto_inline(off)

/// <summary>
/// Type Confusion Object Callback
/// </summary>
VOID TypeConfusionObjectCallback() {
    PAGED_CODE();

    DbgPrint("[+] Type Confusion Object Callback called\n");
}

/// <summary>
/// Type Confusion Object Initializer
/// </summary>
/// <param name="pTypeConfusionKernelObject">The pointer to TYPE_CONFUSION_KERNEL_OBJECT object</param>
/// <returns>NTSTATUS</returns>
NTSTATUS TypeConfusionObjectInitializer(PTYPE_CONFUSION_KERNEL_OBJECT pTypeConfusionKernelObject) {
    NTSTATUS status = STATUS_SUCCESS;

    PAGED_CODE();

    DbgPrint("[+] pTypeConfusionKernelObject->pCallback: 0x%p\n", pTypeConfusionKernelObject->pCallback);

    pTypeConfusionKernelObject->pCallback();

    DbgPrint("[+] Type Confusion Object Initialized\n");

    return status;
}

/// <summary>
/// Trigger the Type Confusion Vulnerability
/// </summary>
/// <param name="pTypeConfusionUserObject">The pointer to TYPE_CONFUSION_USER_OBJECT object</param>
/// <returns>NTSTATUS</returns>
NTSTATUS TriggerTypeConfusion(IN PTYPE_CONFUSION_USER_OBJECT pTypeConfusionUserObject) {
    NTSTATUS status = STATUS_UNSUCCESSFUL;
    PTYPE_CONFUSION_KERNEL_OBJECT pTypeConfusionKernelObject = NULL;

    PAGED_CODE();

    __try {
        // Verify if the buffer resides in User Mode
        ProbeForRead(pTypeConfusionUserObject,
                     sizeof(TYPE_CONFUSION_USER_OBJECT),
                     (ULONG)__alignof(TYPE_CONFUSION_USER_OBJECT));

        // Allocate Pool Memory
        pTypeConfusionKernelObject = (PTYPE_CONFUSION_KERNEL_OBJECT)
                                      ExAllocatePoolWithTag(NonPagedPool,
                                                            sizeof(TYPE_CONFUSION_KERNEL_OBJECT),
                                                            (ULONG)POOL_TAG);

        if (!pTypeConfusionKernelObject) {
            // Unable to allocate Pool Memory with Tag
            DbgPrint("[-] Unable To Allocate Pool Memory\n");

            status = STATUS_NO_MEMORY;
            return status;
        }
        else {
            DbgPrint("[+] Pool Address: 0x%p\n", pTypeConfusionKernelObject);
            DbgPrint("[+] Pool Type: %s\n", STRINGIFY(NonPagedPool));
            DbgPrint("[+] Pool Size: 0x%X\n", sizeof(TYPE_CONFUSION_KERNEL_OBJECT));
            DbgPrint("[+] Pool Tag: %s\n", STRINGIFY(POOL_TAG));
        }

        DbgPrint("[+] pTypeConfusionUserObject: 0x%p\n", pTypeConfusionUserObject);
        DbgPrint("[+] pTypeConfusionKernelObject: 0x%p\n", pTypeConfusionKernelObject);
        DbgPrint("[+] pTypeConfusionKernelObject Size: 0x%X\n", sizeof(TYPE_CONFUSION_KERNEL_OBJECT));

        pTypeConfusionKernelObject->objectID = pTypeConfusionUserObject->objectID;
        DbgPrint("[+] pTypeConfusionKernelObject->objectID: 0x%p\n", pTypeConfusionKernelObject->objectID);

        pTypeConfusionKernelObject->objectType = pTypeConfusionUserObject->objectType;
        DbgPrint("[+] pTypeConfusionKernelObject->objectType: 0x%p\n", pTypeConfusionKernelObject->objectType);

        #ifdef SECURE
            // Secure Note: This is secure because the developer is properly setting 'pCallback' 
            // member of the TYPE_CONFUSION_KERNEL_OBJECT structure before passing the pointer to 
            // itself to TypeConfusionObjectInitializer() function as parameter
            pTypeConfusionKernelObject->pCallback = &TypeConfusionObjectCallback;
            status = TypeConfusionObjectInitializer(pTypeConfusionKernelObject);
        #else
            DbgPrint("[+] Triggering Type Confusion\n");

            // Vulnerability Note: This is a vanilla Type Confusion vulnerability due to improper 
            // use of the UNION construct. The developer has not set the 'pCallback' member of the 
            // TYPE_CONFUSION_KERNEL_OBJECT structure before passing the pointer to itself to 
            // TypeConfusionObjectInitializer() function as parameter
            status = TypeConfusionObjectInitializer(pTypeConfusionKernelObject);
        #endif

        DbgPrint("[+] Freeing pTypeConfusionKernelObject Object\n");
        DbgPrint("[+] Pool Address: 0x%p\n", pTypeConfusionKernelObject);
        DbgPrint("[+] Pool Tag: %s\n", STRINGIFY(POOL_TAG));

        // Free the allocated Pool Memory
        ExFreePoolWithTag((PVOID)pTypeConfusionKernelObject, (ULONG)POOL_TAG);
        pTypeConfusionKernelObject = NULL;
    }
    __except (EXCEPTION_EXECUTE_HANDLER) {
        status = GetExceptionCode();
        DbgPrint("[-] Exception Code: 0x%X\n", status);
    }

    return status;
}

/// <summary>
/// Type Confusion Ioctl Handler
/// </summary>
/// <param name="pIrp">The pointer to IRP</param>
/// <param name="pIoStackIrp">The pointer to IO_STACK_LOCATION structure</param>
/// <returns>NTSTATUS</returns>
NTSTATUS TypeConfusionIoctlHandler(IN PIRP pIrp, IN PIO_STACK_LOCATION pIoStackIrp) {
    NTSTATUS status = STATUS_UNSUCCESSFUL;
    PTYPE_CONFUSION_USER_OBJECT pTypeConfusionUserObject = NULL;

    UNREFERENCED_PARAMETER(pIrp);
    PAGED_CODE();

    pTypeConfusionUserObject = (PTYPE_CONFUSION_USER_OBJECT)
                                pIoStackIrp->Parameters.DeviceIoControl.Type3InputBuffer;

    if (pTypeConfusionUserObject) {
        status = TriggerTypeConfusion(pTypeConfusionUserObject);
    }

    return status;
}

#pragma auto_inline()