How to determine a windows executables DLL dependencies programmatically?

Question

How to determine what DLL\'s a binary depends on using programmatic methods?

To be clear, I am not trying to determine the DLL dependencies of the running exec, bu

Answer 1

76 lines to do that based on pedump code (don't forget to add Imagehlp.lib as dependancy):

#include 
#include "windows.h" //DONT REMOVE IT
#include "ImageHlp.h"
#include "stdafx.h"

template  PIMAGE_SECTION_HEADER GetEnclosingSectionHeader(DWORD rva, T* pNTHeader) // 'T' == PIMAGE_NT_HEADERS 
{
    PIMAGE_SECTION_HEADER section = IMAGE_FIRST_SECTION(pNTHeader);
    unsigned i;

    for ( i=0; i < pNTHeader->FileHeader.NumberOfSections; i++, section++ )
    {
        // This 3 line idiocy is because Watcom's linker actually sets the
        // Misc.VirtualSize field to 0.  (!!! - Retards....!!!)
        DWORD size = section->Misc.VirtualSize;
        if ( 0 == size )
            size = section->SizeOfRawData;

        // Is the RVA within this section?
        if ( (rva >= section->VirtualAddress) && 
             (rva < (section->VirtualAddress + size)))
            return section;
    }

    return 0;
}

template  LPVOID GetPtrFromRVA( DWORD rva, T* pNTHeader, PBYTE imageBase ) // 'T' = PIMAGE_NT_HEADERS 
{
    PIMAGE_SECTION_HEADER pSectionHdr;
    INT delta;

    pSectionHdr = GetEnclosingSectionHeader( rva, pNTHeader );
    if ( !pSectionHdr )
        return 0;

    delta = (INT)(pSectionHdr->VirtualAddress-pSectionHdr->PointerToRawData);
    return (PVOID) ( imageBase + rva - delta );
}


void DumpDllFromPath(wchar_t* path) {
    char name[300];
    wcstombs(name,path,300);

    PLOADED_IMAGE image=ImageLoad(name,0);

    if (image->FileHeader->OptionalHeader.NumberOfRvaAndSizes>=2) {
        PIMAGE_IMPORT_DESCRIPTOR importDesc=
            (PIMAGE_IMPORT_DESCRIPTOR)GetPtrFromRVA(
                image->FileHeader->OptionalHeader.DataDirectory[1].VirtualAddress,
                image->FileHeader,image->MappedAddress);
        while ( 1 )
        {
            // See if we've reached an empty IMAGE_IMPORT_DESCRIPTOR
            if ( (importDesc->TimeDateStamp==0 ) && (importDesc->Name==0) )
                break;

            printf("  %s\n", GetPtrFromRVA(importDesc->Name,
                                           image->FileHeader,
                                           image->MappedAddress) );
            importDesc++;
        }
    }
    ImageUnload(image);

}

//Pass exe or dll as argument 
int _tmain(int argc, _TCHAR* argv[])
{
    DumpDllFromPath(argv[1]);

    return 0;
}