#include <windows.h>
#include <stdio.h>

int main()
{
    // I manually enter pid at this time for this experimental code.
	int pid = 5428;

	HANDLE process_handle = OpenProcess(
    	PROCESS_ALL_ACCESS,
        FALSE,
        pid);


    // the values whose address are to be found by this code.
    int Val = 12345;

    char* p = NULL;
    int* q;
    int v;

    DWORD dwStart = 0, i;
    SIZE_T lpRead;
    SYSTEM_INFO si;
    MEMORY_BASIC_INFORMATION mbi;
    DWORD MinAddr, MaxAddr;
    DWORD lpBase;
    DWORD Size = sizeof(int);

    // Get Application Min And Max Value
    GetSystemInfo(&si);
    MinAddr = (DWORD)si.lpMinimumApplicationAddress;
    MaxAddr = (DWORD)si.lpMaximumApplicationAddress;
// printf("MinAddr : %p\n", MinAddr);
// printf("MaxAddr : %p\n", MaxAddr);
    dwStart = MinAddr;

    puts("Begin");

    while(1){
        if (VirtualQueryEx( process_handle,(void *)dwStart,&mbi,sizeof(MEMORY_BASIC_INFORMATION) == 0))
        {
            printf("VirtualQueryEx failed.");
        }



        if(dwStart + mbi.RegionSize < dwStart)
        {
            //printf("Break. \n");
            break;

        }

        //printf("This region has the size of: %p  \n", (int)mbi.RegionSize);

        if(mbi.State != MEM_COMMIT) {
            dwStart+=mbi.RegionSize;
            //printf("Continue. \n");
            continue;

        }



        for(i=dwStart; i<dwStart+mbi.RegionSize; i+= Size)  // i+= Size
        {
            //printf("It got to readprocess memory. \n");

            if(ReadProcessMemory(process_handle, (LPVOID)i, &v, Size, NULL) != 0) // &lpRead
            {
                printf("Val = %d \n", Val);
                if (v==Val)
                {
                    //Address[AddCnt++] = i;
                    //printf("Found one: %p\n",i);
                    printf("Found one.");
                }
            }
            else
            {
                printf("ReadProcessMemory has an error. \n");
            }
        }

        dwStart+=mbi.RegionSize;
    }

    puts("End");

    system("pause");
	return 0;
}