peParser.cpp

#include <windows.h>
#include <iostream>

bool readBinFile(const char fileName[], char*& bufPtr, DWORD& length) {
	if (FILE* fp = fopen(fileName, "rb")) {
		fseek(fp, 0, SEEK_END);
		length = ftell(fp);
		bufPtr = new char[length + 1];
		fseek(fp, 0, SEEK_SET);
		fread(bufPtr, sizeof(char), length, fp);
		return true;
	}
	else return false;
}


int main(void) {

    char *peData; DWORD peLen;
    readBinFile("msgbox.exe", peData, peLen);

    IMAGE_DOS_HEADER *dosHdr = (IMAGE_DOS_HEADER *)peData;
    IMAGE_NT_HEADERS *ntHdrs = (IMAGE_NT_HEADERS *)&peData[dosHdr->e_lfanew];
    printf("dosHdr Magic = %x\n", dosHdr->e_magic);
    printf("ntHdrs Magic = %x\n", ntHdrs->Signature);

    auto sectionHdrs = (IMAGE_SECTION_HEADER *)((size_t)ntHdrs + sizeof(*ntHdrs));
    for (int i = 0; i < ntHdrs->FileHeader.NumberOfSections ; i++) {
        printf("%s -> %s\n", sectionHdrs[i].Name, &peData[sectionHdrs[i].PointerToRawData] );
    }
        

    return 0;
}