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program RealName;
{$APPTYPE CONSOLE}
uses
Classes,SysUtils;
type
IMAGE_DOS_HEADER=packed record { DOS .EXE header }
magic : word; { Magic number }
cblp : word; { Bytes on last page of file }
cp : word; { Pages in file }
crlc : word; { Relocations }
cparhdr : word; { Size of header in paragraphs }
minalloc: word; { Minimum extra paragraphs needed }
maxalloc: word; { Maximum extra paragraphs needed }
ss : word; { Initial (relative) SS value }
sp : word; { Initial SP value }
csum : word; { Checksum }
ip : word; { Initial IP value }
cs : word; { Initial (relative) CS value }
lfarlc : word; { File address of relocation table }
ovno : word; { Overlay number }
res : array[0..3] of word; { Reserved words }
oemid : word; { OEM identifier }
oeminfo : word; { OEM information }
res2 : array[0..9] of word; { Reserved words }
lfanew : longint; { File address of new exe header }
end;
IMAGE_FILE_HEADER=packed record
Machine : word; { Intel 386 = $014C }
NumberOfSections : word;
TimeDateStamp : longint;
PointerToSymbolTable : longint;
NumberOfSymbols : longint;
SizeOfOptionalHeader : word;
Characteristics : word;
end;
IMAGE_OPTIONAL_HEADER=packed record
Magic : word;
MajorLinkerVersion : byte;
MinorLinkerVersion : byte;
SizeOfCode : longint;
SizeOfInitializedData : longint;
SizeOfUninitializedData : longint;
AddressOfEntryPoint : longint;
BaseOfCode : longint;
BaseOfData : longint;
ImageBase : longint;
SectionAlignment : longint;
FileAlignment : longint;
MajorOperatingSystemVersion : word;
MinorOperatingSystemVersion : word;
MajorImageVersion : word;
MinorImageVersion : word;
MajorSubsystemVersion : word;
MinorSubsystemVersion : word;
Win32VersionValue : longint;
SizeOfImage : longint;
SizeOfHeaders : longint;
Checksum : longint;
Subsystem : word;
DllCharacteristics : word;
SizeOfStackReserve : longint;
SizeOfStackCommit : longint;
SizeOfHeapReserve : longint;
SizeOfHeapCommit : longint;
LoaderFlags : longint;
NumberOfRvaAndSizes : longint;
end;
IMAGE_NT_HEADERS=packed record
Signature : array[0..3] of char; { 'PE'00 }
FileHeader : IMAGE_FILE_HEADER;
OptionalHeader: IMAGE_OPTIONAL_HEADER;
end;
IMAGE_DATA_DIRECTORY=packed record
VirtualAddress:longint;
Size :longint;
end;
IMAGE_SECTION_HEADER=packed record
Name : array[0..7] of char;
VirtualSize : longint; { PhysicalAddress }
VirtualAddress : cardinal;
SizeOfRawData : longint;
PointerToRawData : longint;
PointerToRelocations: longint;
PointerToLinenumbers: longint;
NumberOfRelocations : word;
NumberOfLinenumbers : word;
Characteristics : cardinal;
end;
IMAGE_EXPORT_DESCRIPTOR=packed record
Characteristics : cardinal;
TimeDateStamp : cardinal;
MajorVersion : word;
MinorVersion : word;
Name : cardinal;
Base : cardinal;
NumberOfFunctions : cardinal;
NumberOfNames : cardinal;
AddressOfFunctions : cardinal;
AddressOfNames : cardinal;
AddressOfNameOrdinals : cardinal;
end;
const
sign:array[0..3] of char='PE'#0#0;
var
dllname:string;
name :string;
stream :TFileStream;
dos :IMAGE_DOS_HEADER;
pe :IMAGE_NT_HEADERS;
dd :IMAGE_DATA_DIRECTORY;
va :integer;
i :integer;
sh :IMAGE_SECTION_HEADER;
ed :IMAGE_EXPORT_DESCRIPTOR;
begin
dllname:=ParamStr(1);
name:='unknown';
if dllname='' then exit;
stream:=TFileStream.Create(dllname,fmOpenRead);
try
// entête DOS
stream.ReadBuffer(dos,SizeOf(dos));
if dos.magic<>$5A4D then exit;
stream.Position:=dos.lfanew;
// entête Windows
WriteLn('@PE=',IntToHex(stream.Position,4));
stream.ReadBuffer(pe,SizeOf(pe));
if cardinal(pe.Signature)<>cardinal(sign) then exit;
// adresse de la section d'import
WriteLn('@DD',i,'=',IntToHex(stream.Position,4));
stream.ReadBuffer(dd,SizeOf(dd));
va:=dd.VirtualAddress;
WriteLn('@header=$',IntToHex(va,8));
// on saute les 15 autres entrées (import,Resource, Exception, Security,...)
stream.Seek(15*SizeOf(dd),soFromCurrent);
// on cherche dans les entêtes qui suivent
for i:=1 to pe.FileHeader.NumberOfSections do begin
stream.ReadBuffer(sh,SizeOf(sh));
// celle qui a la bonne adresse virtuelle
if sh.VirtualAddress=va then begin
WriteLn('@data=$',IntToHex(sh.PointerToRawData,8));
// à sa position réelle dans le fichier
stream.Position:=sh.PointerToRawData;
// on lit l'entête d'exportation
stream.ReadBuffer(ed,SizeOf(ed));
WriteLn('@name=$',IntToHex(ed.Name,8));
// qui contient l'adresse du nom qu'on cherche
stream.Position:=sh.PointerToRawData+ed.Name-va;
// qui voici :D
SetLength(name,80);
stream.ReadBuffer(name[1],80);
name:=pchar(name);
break;
end;
end;
WriteLn('RealName=',name);
ReadLn;
finally
stream.Free
end;
end. |
