How to find data segment and code segment range in program

Question

My teacher asked me to do this task on a Windows system. Could you please help me to find some data segment and code segment address range via program?

There is no such segment(code) ..Its known as text segment where program instruction gets stored. — Mantosh Kumar, Mar 23 '14 at 07:28
Check out this question which has good information regarding this. http://stackoverflow.com/questions/7873579/why-is-a-processs-address-space-divided-into-four-segments-text-data-stack-a — Mantosh Kumar, Mar 23 '14 at 07:31
http://stackoverflow.com/questions/4308996/finding-the-address-range-of-the-data-segment — tesseract, Mar 23 '14 at 07:58

score 1 · Answer 1 · edited May 23 '17 at 12:20

These are Windows API that would help you.

//store the base address the loaded Module
dllImageBase = (char*)hModule; //suppose hModule is the handle to the loaded Module (.exe or .dll)

//get the address of NT Header
IMAGE_NT_HEADERS *pNtHdr = ImageNtHeader(hModule);

//after Nt headers comes the table of section, so get the addess of section table
IMAGE_SECTION_HEADER *pSectionHdr = (IMAGE_SECTION_HEADER *) (pNtHdr + 1);

ImageSectionInfo *pSectionInfo = NULL;

//iterate through the list of all sections, and check the section name in the if conditon. etc
for ( int i = 0 ; i < pNtHdr->FileHeader.NumberOfSections ; i++ )
{
     char *name = (char*) pSectionHdr->Name;
     if ( memcmp(name, ".data", 5) == 0 )
     {
          pSectionInfo = new ImageSectionInfo(".data");
          pSectionInfo->SectionAddress = dllImageBase + pSectionHdr->VirtualAddress;

          **//range of the data segment - something you're looking for**
          pSectionInfo->SectionSize = pSectionHdr->Misc.VirtualSize;
          break;
      }
      pSectionHdr++;
}

Define ImageSectionInfo as,

struct ImageSectionInfo
{
      char SectionName[IMAGE_SIZEOF_SHORT_NAME];//the macro is defined WinNT.h
      char *SectionAddress;
      int SectionSize;
      ImageSectionInfo(const char* name)
      {
            strcpy(SectioName, name); 
       }
};

Read Nawaz's answer.

How to find data segment and code segment range in program

1 Answers1