void DumpSections(hadesmem::Process const& process,
hadesmem::PeFile const& pe_file)
{
hadesmem::SectionList sections(process, pe_file);
std::wostream& out = GetOutputStreamW();
if (std::begin(sections) != std::end(sections))
{
WriteNewline(out);
WriteNormal(out, L"Sections:", 1);
}
else
{
// Other checks on number of sections are done as part of header handling.
hadesmem::NtHeaders const nt_hdrs(process, pe_file);
if (nt_hdrs.GetNumberOfSections())
{
WriteNewline(out);
WriteNormal(out, L"WARNING! Section list is inavlid.", 1);
WarnForCurrentFile(WarningType::kUnsupported);
}
}
for (auto const& s : sections)
{
WriteNewline(out);
if (s.IsVirtual())
{
WriteNormal(out, L"WARNING! Section is virtual.", 2);
WarnForCurrentFile(WarningType::kSuspicious);
}
HandleLongOrUnprintableString(
L"name", L"section name", 2, WarningType::kSuspicious, s.GetName());
WriteNamedHex(out, L"VirtualAddress", s.GetVirtualAddress(), 2);
WriteNamedHex(out, L"VirtualSize", s.GetVirtualSize(), 2);
WriteNamedHex(out, L"PointerToRawData", s.GetPointerToRawData(), 2);
WriteNamedHex(out, L"SizeOfRawData", s.GetSizeOfRawData(), 2);
WriteNamedHex(out, L"PointerToRelocations", s.GetPointerToRelocations(), 2);
WriteNamedHex(out, L"PointerToLinenumbers", s.GetPointerToLinenumbers(), 2);
WriteNamedHex(out, L"NumberOfRelocations", s.GetNumberOfRelocations(), 2);
WriteNamedHex(out, L"NumberOfLinenumbers", s.GetNumberOfLinenumbers(), 2);
WriteNamedHex(out, L"Characteristics", s.GetCharacteristics(), 2);
}
}
void DumpExports(hadesmem::Process const& process,
hadesmem::PeFile const& pe_file)
{
std::unique_ptr<hadesmem::ExportDir const> export_dir;
try
{
export_dir = std::make_unique<hadesmem::ExportDir const>(process, pe_file);
}
catch (std::exception const& /*e*/)
{
return;
}
std::wostream& out = std::wcout;
WriteNewline(out);
WriteNormal(out, L"Export Dir:", 1);
WriteNewline(out);
WriteNamedHex(out, L"Characteristics", export_dir->GetCharacteristics(), 2);
DWORD const time_date_stamp = export_dir->GetTimeDateStamp();
std::wstring time_date_stamp_str;
if (!ConvertTimeStamp(time_date_stamp, time_date_stamp_str))
{
WriteNormal(out, L"WARNING! Invalid timestamp.", 2);
WarnForCurrentFile(WarningType::kSuspicious);
}
WriteNamedHexSuffix(
out, L"TimeDateStamp", time_date_stamp, time_date_stamp_str, 2);
WriteNamedHex(out, L"MajorVersion", export_dir->GetMajorVersion(), 2);
WriteNamedHex(out, L"MinorVersion", export_dir->GetMinorVersion(), 2);
WriteNamedHex(out, L"Name (Raw)", export_dir->GetNameRaw(), 2);
// Name is not guaranteed to be valid.
// Sample: dllord.dll (Corkami PE Corpus)
try
{
auto name = export_dir->GetName();
HandleLongOrUnprintableString(
L"Name", L"export module name", 2, WarningType::kSuspicious, name);
}
catch (std::exception const& /*e*/)
{
WriteNormal(out, L"WARNING! Failed to read export dir name.", 2);
WarnForCurrentFile(WarningType::kSuspicious);
}
WriteNamedHex(out, L"OrdinalBase", export_dir->GetOrdinalBase(), 2);
WriteNamedHex(
out, L"NumberOfFunctions", export_dir->GetNumberOfFunctions(), 2);
WriteNamedHex(out, L"NumberOfNames", export_dir->GetNumberOfNames(), 2);
WriteNamedHex(
out, L"AddressOfFunctions", export_dir->GetAddressOfFunctions(), 2);
WriteNamedHex(out, L"AddressOfNames", export_dir->GetAddressOfNames(), 2);
WriteNamedHex(
out, L"AddressOfNameOrdinals", export_dir->GetAddressOfNameOrdinals(), 2);
std::set<std::string> export_names;
hadesmem::ExportList const exports(process, pe_file);
if (std::begin(exports) != std::end(exports))
{
WriteNewline(out);
WriteNormal(out, L"Exports:", 2);
}
else
{
WriteNewline(out);
WriteNormal(out, L"WARNING! Empty or invalid export list.", 2);
WarnForCurrentFile(WarningType::kSuspicious);
}
std::uint32_t num_exports = 0U;
for (auto const& e : exports)
{
WriteNewline(out);
// Some legitimate DLLs have well over 1000 exports (e.g. ntdll.dll).
if (num_exports++ == 10000)
{
WriteNormal(
out,
L"WARNING! Processed 10000 exports. Stopping early to avoid resource "
L"exhaustion attacks.",
2);
WarnForCurrentFile(WarningType::kSuspicious);
break;
}
if (e.ByName())
{
auto const name = e.GetName();
// Sample: dllweirdexp.dll
HandleLongOrUnprintableString(
L"Name", L"export name", 3, WarningType::kSuspicious, name);
// PE files can have duplicate exported function names (or even have them
// all identical) because the import hint is used to check the name first
// before performing a search.
// Sample: None ("Import name hint" section of "Undocumented PECOFF"
// whitepaper).
if (!export_names.insert(name).second)
{
WriteNormal(out, L"WARNING! Detected duplicate export name.", 3);
WarnForCurrentFile(WarningType::kSuspicious);
}
}
WriteNamedHex(out, L"ProcedureNumber", e.GetProcedureNumber(), 3);
WriteNamedHex(out, L"OrdinalNumber", e.GetOrdinalNumber(), 3);
if (e.IsForwarded())
{
WriteNamedNormal(out, L"Forwarder", e.GetForwarder().c_str(), 3);
WriteNamedNormal(
out, L"ForwarderModule", e.GetForwarderModule().c_str(), 3);
WriteNamedNormal(
out, L"ForwarderFunction", e.GetForwarderFunction().c_str(), 3);
WriteNamedNormal(
out, L"IsForwardedByOrdinal", e.IsForwardedByOrdinal(), 3);
if (e.IsForwardedByOrdinal())
{
try
{
WriteNamedHex(out, L"ForwarderOrdinal", e.GetForwarderOrdinal(), 3);
}
catch (std::exception const& /*e*/)
{
WriteNormal(out, L"WARNING! ForwarderOrdinal invalid.", 3);
WarnForCurrentFile(WarningType::kSuspicious);
}
}
}
else
{
auto const ep_rva = e.GetRva();
WriteNamedHex(out, L"RVA", e.GetRva(), 3);
auto const ep_va = e.GetVa();
WriteNamedHex(out, L"VA", reinterpret_cast<std::uintptr_t>(ep_va), 3);
if (ep_va)
{
DisassembleEp(process, pe_file, ep_rva, ep_va, 4);
}
else
{
WriteNormal(out, L"WARNING! Export VA is invalid.", 3);
WarnForCurrentFile(WarningType::kSuspicious);
}
}
}
}
