How to get the starting address of each PE section in C? - c

Question

Is it possible to write a C code that retrieve its PE sections addresses after compiling it to .exe ?

Answer 1

Did you mean you want to access each section of exe ?
If yes, then find below way to do so:
#include<windows.h>
#include<stdio.h>
int main()
{
LPCSTR fileName="inputFile.exe";
HANDLE hFile;
HANDLE hFileMapping;
LPVOID lpFileBase;
PIMAGE_DOS_HEADER dosHeader;
PIMAGE_NT_HEADERS peHeader;
PIMAGE_SECTION_HEADER sectionHeader;
hFile = CreateFileA(fileName,GENERIC_READ,FILE_SHARE_READ,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
if(hFile==INVALID_HANDLE_VALUE)
{
printf("\n CreateFile failed \n");
return 1;
}
hFileMapping = CreateFileMapping(hFile,NULL,PAGE_READONLY,0,0,NULL);
if(hFileMapping==0)
{
printf("\n CreateFileMapping failed \n");
CloseHandle(hFile);
return 1;
}
lpFileBase = MapViewOfFile(hFileMapping,FILE_MAP_READ,0,0,0);
if(lpFileBase==0)
{
printf("\n MapViewOfFile failed \n");
CloseHandle(hFileMapping);
CloseHandle(hFile);
return 1;
}
dosHeader = (PIMAGE_DOS_HEADER) lpFileBase;
if(dosHeader->e_magic==IMAGE_DOS_SIGNATURE)
{
printf("\n DOS Signature (MZ) Matched \n");
peHeader = (PIMAGE_NT_HEADERS) ((u_char*)dosHeader+dosHeader->e_lfanew);
if(peHeader->Signature==IMAGE_NT_SIGNATURE)
{
printf("\n PE Signature (PE) Matched \n");
//once found valid exe or dll
//go to first section
sectionHeader = IMAGE_FIRST_SECTION(peHeader);
UINT nSectionCount = peHeader->FileHeader.NumberOfSections;
//No of sections
printf("\n No of sections : %d \n",nSectionCount);
//sectionHeader contains address of first section
//traverse each section by below way
for( UINT i=0; i<nSectionCount; ++i, ++sectionHeader )
{
//section information
}
}
else
{
return 1;
}
}
else
{
return 1;
}
return 0;
}