NO

Author Topic: KAST macro by MrBcx  (Read 976 times)

Offline Vortex

  • Member
  • *
  • Posts: 816
    • http://www.vortex.masmcode.com
KAST macro by MrBcx
« on: May 18, 2024, 09:28:17 PM »
A nice macro by MrBcx used in the BCX language.

Traditional type casting :

Code: [Select]
#include <windows.h>
#include <stdio.h>

int main(void)
{
HMODULE hMod;
PIMAGE_NT_HEADERS pNThdr;
PIMAGE_EXPORT_DIRECTORY pDesc;
DWORD NumbOfNames,i;
DWORD* AddrOfNames;

hMod=LoadLibrary("kernel32.dll");

pNThdr=(PIMAGE_NT_HEADERS)((LPBYTE)hMod + ((PIMAGE_DOS_HEADER)hMod)->e_lfanew);

pDesc=(PIMAGE_EXPORT_DIRECTORY)((LPBYTE)hMod + pNThdr->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress);

NumbOfNames =  pDesc -> NumberOfNames;

AddrOfNames = (DWORD *)((LPBYTE)hMod + pDesc -> AddressOfNames);

for(i=0;i<NumbOfNames;i++)
{
printf("%s\n",(*AddrOfNames+(LPBYTE)hMod));

AddrOfNames=AddrOfNames+1;
}

FreeLibrary(hMod);
return 0;
}

The KAST macro for type casting :

Code: [Select]
#include <windows.h>
#include <stdio.h>

/* KAST macro by MrBcx */

#define KAST(to_type,old_obj) ((to_type)(old_obj))

int main(void)
{
HMODULE hMod;
PIMAGE_NT_HEADERS pNThdr;
PIMAGE_EXPORT_DIRECTORY pDesc;
DWORD NumbOfNames,i;
DWORD* AddrOfNames;

hMod=LoadLibrary("kernel32.dll");

pNThdr=KAST(PIMAGE_NT_HEADERS,KAST(LPBYTE,hMod) + KAST(PIMAGE_DOS_HEADER,hMod)->e_lfanew);

pDesc=KAST(PIMAGE_EXPORT_DIRECTORY,KAST(LPBYTE,hMod) + pNThdr->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress);

NumbOfNames =  pDesc -> NumberOfNames;

AddrOfNames = KAST(DWORD *,KAST(LPBYTE,hMod) + pDesc -> AddressOfNames);

for(i=0;i<NumbOfNames;i++)
{
printf("%s\n",*AddrOfNames+KAST(LPBYTE,hMod));

AddrOfNames=AddrOfNames+1;
}

FreeLibrary(hMod);
return 0;
}
« Last Edit: May 19, 2024, 12:10:26 PM by Vortex »
Code it... That's all...