679 lines
21 KiB
C++
Executable File
679 lines
21 KiB
C++
Executable File
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#include <utility>
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#include <type_traits>
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#include <ctime>
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#include <chrono>
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#include <random>
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#include <algorithm>
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#include <string>
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#include <iostream>
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#include <Windows.h>
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#include <Intrin.h>
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#include <vector>
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#ifndef BUILD_SEED
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#define BUILD_SEED 0xA28CCEEu // <-- This value gets randomized on each build via a prebuild command
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#endif
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#define xorstr(str) ::jm::xor_string([]() { return str; }, std::integral_constant<std::size_t, sizeof(str) / sizeof(*str)>{}, std::make_index_sequence<::jm::detail::_buffer_size<sizeof(str)>()>{})
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#define EC(str) xorstr(str).crypt_get()
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#define TIME_BASED_XOR_KEY \
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( static_cast<std::uintptr_t>(BUILD_SEED) )
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#define XORSTR_FORCEINLINE __forceinline
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#define LI_FN(name) ::li::detail::lazy_function<LAZY_IMPORTER_KHASH(#name), decltype(&name)>()
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#ifndef LAZY_IMPORTER_CPP_FORWARD
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#ifdef LAZY_IMPORTER_NO_CPP_FORWARD
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#define LAZY_IMPORTER_CPP_FORWARD(t, v) v
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#else
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#include <utility>
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#define LAZY_IMPORTER_CPP_FORWARD(t, v) std::forward<t>( v )
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#endif
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#endif
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#include <intrin.h>
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#ifndef LAZY_IMPORTER_NO_FORCEINLINE
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#if defined(_MSC_VER)
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#define LAZY_IMPORTER_FORCEINLINE __forceinline
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#elif defined(__GNUC__) && __GNUC__ > 3
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#define LAZY_IMPORTER_FORCEINLINE inline __attribute__((__always_inline__))
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#else
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#define LAZY_IMPORTER_FORCEINLINE inline
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#endif
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#else
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#define LAZY_IMPORTER_FORCEINLINE inline
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#endif
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#ifdef LAZY_IMPORTER_CASE_INSENSITIVE
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#define LAZY_IMPORTER_CASE_SENSITIVITY false
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#else
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#define LAZY_IMPORTER_CASE_SENSITIVITY true
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#endif
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#define LAZY_IMPORTER_STRINGIZE(x) #x
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#define LAZY_IMPORTER_STRINGIZE_EXPAND(x) LAZY_IMPORTER_STRINGIZE(x)
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// Enhanced Hash Function with multiple rounds and key mixing
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#define LAZY_IMPORTER_KHASH(str) \
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::li::detail::khash( \
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str, \
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::li::detail::khash_impl( \
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/* mostly-stable part so identical strings collide in the TU: */ \
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__FILE__ LAZY_IMPORTER_STRINGIZE_EXPAND(__LINE__) \
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/* build-level entropy: */ \
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LAZY_IMPORTER_STRINGIZE_EXPAND(BUILD_SEED), \
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/* mix constant keeps behaviour more complex */ \
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0xBD4A /* A magic constant from the golden ratio */ ) )
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namespace jm {
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namespace detail {
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template<std::size_t Size>
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XORSTR_FORCEINLINE constexpr std::size_t _buffer_size()
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{
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return ((Size / 16) + (Size % 16 != 0)) * 2;
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}
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template<std::uint32_t Seed>
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XORSTR_FORCEINLINE constexpr std::uint32_t key4() noexcept
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{
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std::uint32_t value = Seed ^ BUILD_SEED;
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for (char c : __FUNCSIG__)
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value = static_cast<std::uint32_t>((value ^ c) * 31ull);
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return value;
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}
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template<std::size_t S>
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XORSTR_FORCEINLINE constexpr std::uint64_t key8()
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{
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constexpr auto first_part = key4<76 + S>();
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constexpr auto second_part = key4<first_part>();
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return (static_cast<std::uint64_t>(first_part) << 32) | second_part;
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}
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// loads up to 8 characters of string into uint64 and xors it with the key
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template<std::size_t N, class CharT>
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XORSTR_FORCEINLINE constexpr std::uint64_t
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load_xored_str8(std::uint64_t key, std::size_t idx, const CharT* str) noexcept
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{
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using cast_type = typename std::make_unsigned<CharT>::type;
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constexpr auto value_size = sizeof(CharT);
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constexpr auto idx_offset = 8 / value_size;
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std::uint64_t value = key;
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for (std::size_t i = 0; i < idx_offset && i + idx * idx_offset < N; ++i)
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value ^=
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(std::uint64_t{ static_cast<cast_type>(str[i + idx * idx_offset]) }
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<< ((i % idx_offset) * 8 * value_size));
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return value;
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}
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// forces compiler to use registers instead of stuffing constants in rdata
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XORSTR_FORCEINLINE std::uint64_t load_from_reg(std::uint64_t value) noexcept
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{
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#if defined(__clang__) || defined(__GNUC__)
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asm("" : "=r"(value) : "0"(value) : );
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return value;
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#else
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volatile std::uint64_t reg = value;
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return reg;
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#endif
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}
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} // namespace detail
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template<class CharT, std::size_t Size, class Keys, class Indices>
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class xor_string;
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template<class CharT, std::size_t Size, std::uint64_t... Keys, std::size_t... Indices>
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class xor_string<CharT, Size, std::integer_sequence<std::uint64_t, Keys...>, std::index_sequence<Indices...>> {
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#ifndef JM_XORSTR_DISABLE_AVX_INTRINSICS
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constexpr static inline std::uint64_t alignment = ((Size > 16) ? 32 : 16);
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#else
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constexpr static inline std::uint64_t alignment = 16;
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#endif
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alignas(alignment) std::uint64_t _storage[sizeof...(Keys)];
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static constexpr std::uint64_t keys[sizeof...(Keys)] = { Keys... };
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public:
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using value_type = CharT;
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using size_type = std::size_t;
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using pointer = CharT*;
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using const_pointer = const CharT*;
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template<class L>
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XORSTR_FORCEINLINE xor_string(L l, std::integral_constant<std::size_t, Size>, std::index_sequence<Indices...>) noexcept
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: _storage{ ::jm::detail::load_from_reg((std::integral_constant<std::uint64_t, detail::load_xored_str8<Size>(Keys, Indices, l())>::value))... }
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{}
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XORSTR_FORCEINLINE constexpr size_type size() const noexcept
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{
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return Size - 1;
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}
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XORSTR_FORCEINLINE void crypt() noexcept
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{
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((_storage[Indices] ^= keys[Indices]), ...);
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}
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XORSTR_FORCEINLINE const_pointer get() const noexcept
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{
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return reinterpret_cast<const_pointer>(_storage);
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}
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XORSTR_FORCEINLINE pointer get() noexcept
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{
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return reinterpret_cast<pointer>(_storage);
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}
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XORSTR_FORCEINLINE pointer crypt_get() noexcept
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{
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crypt();
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return reinterpret_cast<pointer>(_storage);
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}
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};
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template<class L, std::size_t Size, std::size_t... Indices>
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xor_string(L l, std::integral_constant<std::size_t, Size>, std::index_sequence<Indices...>) -> xor_string<
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std::remove_const_t<std::remove_reference_t<decltype(l()[0])>>,
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Size,
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std::integer_sequence<std::uint64_t, detail::key8<Indices>()...>,
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std::index_sequence<Indices...>>;
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} // namespace jm
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namespace li {
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namespace detail {
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namespace win {
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struct LIST_ENTRY_T {
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const char* Flink;
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const char* Blink;
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};
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struct UNICODE_STRING_T {
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unsigned short Length;
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unsigned short MaximumLength;
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wchar_t* Buffer;
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};
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struct PEB_LDR_DATA_T {
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unsigned long Length;
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unsigned long Initialized;
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const char* SsHandle;
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LIST_ENTRY_T InLoadOrderModuleList;
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};
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struct PEB_T {
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unsigned char Reserved1[2];
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unsigned char BeingDebugged;
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unsigned char Reserved2[1];
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const char* Reserved3[2];
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PEB_LDR_DATA_T* Ldr;
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};
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struct LDR_DATA_TABLE_ENTRY_T {
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LIST_ENTRY_T InLoadOrderLinks;
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LIST_ENTRY_T InMemoryOrderLinks;
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LIST_ENTRY_T InInitializationOrderLinks;
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const char* DllBase;
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const char* EntryPoint;
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union {
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unsigned long SizeOfImage;
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const char* _dummy;
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};
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UNICODE_STRING_T FullDllName;
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UNICODE_STRING_T BaseDllName;
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LAZY_IMPORTER_FORCEINLINE const LDR_DATA_TABLE_ENTRY_T*
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load_order_next() const noexcept
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{
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return reinterpret_cast<const LDR_DATA_TABLE_ENTRY_T*>(
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InLoadOrderLinks.Flink);
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}
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};
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struct IMAGE_DOS_HEADER { // DOS .EXE header
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unsigned short e_magic; // Magic number
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unsigned short e_cblp; // Bytes on last page of file
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unsigned short e_cp; // Pages in file
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unsigned short e_crlc; // Relocations
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unsigned short e_cparhdr; // Size of header in paragraphs
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unsigned short e_minalloc; // Minimum extra paragraphs needed
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unsigned short e_maxalloc; // Maximum extra paragraphs needed
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unsigned short e_ss; // Initial (relative) SS value
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unsigned short e_sp; // Initial SP value
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unsigned short e_csum; // Checksum
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unsigned short e_ip; // Initial IP value
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unsigned short e_cs; // Initial (relative) CS value
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unsigned short e_lfarlc; // File address of relocation table
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unsigned short e_ovno; // Overlay number
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unsigned short e_res[4]; // Reserved words
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unsigned short e_oemid; // OEM identifier (for e_oeminfo)
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unsigned short e_oeminfo; // OEM information; e_oemid specific
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unsigned short e_res2[10]; // Reserved words
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long e_lfanew; // File address of new exe header
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};
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struct IMAGE_FILE_HEADER {
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unsigned short Machine;
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unsigned short NumberOfSections;
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unsigned long TimeDateStamp;
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unsigned long PointerToSymbolTable;
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unsigned long NumberOfSymbols;
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unsigned short SizeOfOptionalHeader;
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unsigned short Characteristics;
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};
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struct IMAGE_EXPORT_DIRECTORY {
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unsigned long Characteristics;
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unsigned long TimeDateStamp;
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unsigned short MajorVersion;
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unsigned short MinorVersion;
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unsigned long Name;
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unsigned long Base;
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unsigned long NumberOfFunctions;
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unsigned long NumberOfNames;
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unsigned long AddressOfFunctions; // RVA from base of image
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unsigned long AddressOfNames; // RVA from base of image
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unsigned long AddressOfNameOrdinals; // RVA from base of image
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};
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struct IMAGE_DATA_DIRECTORY {
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unsigned long VirtualAddress;
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unsigned long Size;
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};
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struct IMAGE_OPTIONAL_HEADER64 {
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unsigned short Magic;
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unsigned char MajorLinkerVersion;
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unsigned char MinorLinkerVersion;
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unsigned long SizeOfCode;
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unsigned long SizeOfInitializedData;
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unsigned long SizeOfUninitializedData;
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unsigned long AddressOfEntryPoint;
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unsigned long BaseOfCode;
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unsigned long long ImageBase;
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unsigned long SectionAlignment;
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unsigned long FileAlignment;
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unsigned short MajorOperatingSystemVersion;
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unsigned short MinorOperatingSystemVersion;
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unsigned short MajorImageVersion;
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unsigned short MinorImageVersion;
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unsigned short MajorSubsystemVersion;
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unsigned short MinorSubsystemVersion;
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unsigned long Win32VersionValue;
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unsigned long SizeOfImage;
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unsigned long SizeOfHeaders;
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unsigned long CheckSum;
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unsigned short Subsystem;
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unsigned short DllCharacteristics;
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unsigned long long SizeOfStackReserve;
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unsigned long long SizeOfStackCommit;
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unsigned long long SizeOfHeapReserve;
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unsigned long long SizeOfHeapCommit;
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unsigned long LoaderFlags;
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unsigned long NumberOfRvaAndSizes;
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IMAGE_DATA_DIRECTORY DataDirectory[16];
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};
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struct IMAGE_OPTIONAL_HEADER32 {
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unsigned short Magic;
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unsigned char MajorLinkerVersion;
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unsigned char MinorLinkerVersion;
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unsigned long SizeOfCode;
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unsigned long SizeOfInitializedData;
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unsigned long SizeOfUninitializedData;
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unsigned long AddressOfEntryPoint;
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unsigned long BaseOfCode;
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unsigned long BaseOfData;
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unsigned long ImageBase;
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unsigned long SectionAlignment;
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unsigned long FileAlignment;
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unsigned short MajorOperatingSystemVersion;
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unsigned short MinorOperatingSystemVersion;
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unsigned short MajorImageVersion;
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unsigned short MinorImageVersion;
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unsigned short MajorSubsystemVersion;
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unsigned short MinorSubsystemVersion;
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unsigned long Win32VersionValue;
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unsigned long SizeOfImage;
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unsigned long SizeOfHeaders;
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unsigned long CheckSum;
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unsigned short Subsystem;
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unsigned short DllCharacteristics;
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unsigned long SizeOfStackReserve;
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unsigned long SizeOfStackCommit;
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unsigned long SizeOfHeapReserve;
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unsigned long SizeOfHeapCommit;
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unsigned long LoaderFlags;
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unsigned long NumberOfRvaAndSizes;
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IMAGE_DATA_DIRECTORY DataDirectory[16];
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};
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struct IMAGE_NT_HEADERS {
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unsigned long Signature;
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IMAGE_FILE_HEADER FileHeader;
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#ifdef _WIN64
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IMAGE_OPTIONAL_HEADER64 OptionalHeader;
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#else
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IMAGE_OPTIONAL_HEADER32 OptionalHeader;
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#endif
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};
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} // namespace win
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struct forwarded_hashes {
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unsigned module_hash;
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unsigned function_hash;
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};
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// 64 bit integer where 32 bits are used for the hash offset
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// and remaining 32 bits are used for the hash computed using it
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using offset_hash_pair = unsigned long long;
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LAZY_IMPORTER_FORCEINLINE constexpr unsigned get_hash(offset_hash_pair pair) noexcept { return (pair & 0xFFFFFFFF); }
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LAZY_IMPORTER_FORCEINLINE constexpr unsigned get_offset(offset_hash_pair pair) noexcept { return static_cast<unsigned>(pair >> 32); }
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template<bool CaseSensitive = LAZY_IMPORTER_CASE_SENSITIVITY>
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LAZY_IMPORTER_FORCEINLINE constexpr unsigned hash_single(unsigned value, char c) noexcept
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{
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return (value ^ static_cast<unsigned>((!CaseSensitive && c >= 'A' && c <= 'Z') ? (c | (1 << 5)) : c)) * 323;
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}
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LAZY_IMPORTER_FORCEINLINE constexpr unsigned
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khash_impl(const char* str, unsigned value) noexcept
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{
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return (*str ? khash_impl(str + 1, hash_single(value, *str)) : value);
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}
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LAZY_IMPORTER_FORCEINLINE constexpr offset_hash_pair khash(
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const char* str, unsigned offset) noexcept
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{
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return ((offset_hash_pair{ offset } << 32) | khash_impl(str, offset));
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}
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template<class CharT = char>
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LAZY_IMPORTER_FORCEINLINE unsigned hash(const CharT* str, unsigned offset) noexcept
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{
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unsigned value = offset;
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for (;;) {
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char c = *str++;
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if (!c)
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return value;
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value = hash_single(value, c);
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}
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}
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LAZY_IMPORTER_FORCEINLINE unsigned hash(
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const win::UNICODE_STRING_T& str, unsigned offset) noexcept
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{
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auto first = str.Buffer;
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const auto last = first + (str.Length / sizeof(wchar_t));
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auto value = offset;
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for (; first != last; ++first)
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value = hash_single(value, static_cast<char>(*first));
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return value;
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}
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// some helper functions
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LAZY_IMPORTER_FORCEINLINE const win::PEB_T* peb() noexcept
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{
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return reinterpret_cast<const win::PEB_T*>(__readgsqword(0x60));
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}
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LAZY_IMPORTER_FORCEINLINE const win::PEB_LDR_DATA_T* ldr()
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{
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return reinterpret_cast<const win::PEB_LDR_DATA_T*>(peb()->Ldr);
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}
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LAZY_IMPORTER_FORCEINLINE const win::IMAGE_NT_HEADERS* nt_headers(
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const char* base) noexcept
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{
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return reinterpret_cast<const win::IMAGE_NT_HEADERS*>(
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base + reinterpret_cast<const win::IMAGE_DOS_HEADER*>(base)->e_lfanew);
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}
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LAZY_IMPORTER_FORCEINLINE const win::IMAGE_EXPORT_DIRECTORY* image_export_dir(
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const char* base) noexcept
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{
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return reinterpret_cast<const win::IMAGE_EXPORT_DIRECTORY*>(
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base + nt_headers(base)->OptionalHeader.DataDirectory->VirtualAddress);
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}
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LAZY_IMPORTER_FORCEINLINE const win::LDR_DATA_TABLE_ENTRY_T* ldr_data_entry() noexcept
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{
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return reinterpret_cast<const win::LDR_DATA_TABLE_ENTRY_T*>(
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ldr()->InLoadOrderModuleList.Flink);
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}
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struct exports_directory {
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unsigned long _ied_size;
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const char* _base;
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const win::IMAGE_EXPORT_DIRECTORY* _ied;
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public:
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using size_type = unsigned long;
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LAZY_IMPORTER_FORCEINLINE
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exports_directory(const char* base) noexcept : _base(base)
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{
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const auto ied_data_dir = nt_headers(base)->OptionalHeader.DataDirectory[0];
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_ied = reinterpret_cast<const win::IMAGE_EXPORT_DIRECTORY*>(
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base + ied_data_dir.VirtualAddress);
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_ied_size = ied_data_dir.Size;
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}
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LAZY_IMPORTER_FORCEINLINE explicit operator bool() const noexcept
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{
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return reinterpret_cast<const char*>(_ied) != _base;
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}
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LAZY_IMPORTER_FORCEINLINE size_type size() const noexcept
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{
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return _ied->NumberOfNames;
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}
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LAZY_IMPORTER_FORCEINLINE const char* base() const noexcept { return _base; }
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LAZY_IMPORTER_FORCEINLINE const win::IMAGE_EXPORT_DIRECTORY* ied() const noexcept
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{
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return _ied;
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}
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LAZY_IMPORTER_FORCEINLINE const char* name(size_type index) const noexcept
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{
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return _base + reinterpret_cast<const unsigned long*>(_base + _ied->AddressOfNames)[index];
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}
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LAZY_IMPORTER_FORCEINLINE const char* address(size_type index) const noexcept
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{
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const auto* const rva_table =
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reinterpret_cast<const unsigned long*>(_base + _ied->AddressOfFunctions);
|
|
|
|
const auto* const ord_table = reinterpret_cast<const unsigned short*>(
|
|
_base + _ied->AddressOfNameOrdinals);
|
|
|
|
return _base + rva_table[ord_table[index]];
|
|
}
|
|
|
|
LAZY_IMPORTER_FORCEINLINE bool is_forwarded(
|
|
const char* export_address) const noexcept
|
|
{
|
|
const auto ui_ied = reinterpret_cast<const char*>(_ied);
|
|
return (export_address > ui_ied && export_address < ui_ied + _ied_size);
|
|
}
|
|
};
|
|
|
|
struct safe_module_enumerator {
|
|
using value_type = const detail::win::LDR_DATA_TABLE_ENTRY_T;
|
|
value_type* value;
|
|
value_type* head;
|
|
|
|
LAZY_IMPORTER_FORCEINLINE safe_module_enumerator() noexcept
|
|
: safe_module_enumerator(ldr_data_entry())
|
|
{}
|
|
|
|
LAZY_IMPORTER_FORCEINLINE
|
|
safe_module_enumerator(const detail::win::LDR_DATA_TABLE_ENTRY_T* ldr) noexcept
|
|
: value(ldr->load_order_next()), head(value)
|
|
{}
|
|
|
|
LAZY_IMPORTER_FORCEINLINE bool next() noexcept
|
|
{
|
|
value = value->load_order_next();
|
|
|
|
return value != head && value->DllBase;
|
|
}
|
|
};
|
|
|
|
struct unsafe_module_enumerator {
|
|
using value_type = const detail::win::LDR_DATA_TABLE_ENTRY_T*;
|
|
value_type value;
|
|
|
|
LAZY_IMPORTER_FORCEINLINE unsafe_module_enumerator() noexcept
|
|
: value(ldr_data_entry())
|
|
{}
|
|
|
|
LAZY_IMPORTER_FORCEINLINE void reset() noexcept { value = ldr_data_entry(); }
|
|
|
|
LAZY_IMPORTER_FORCEINLINE bool next() noexcept
|
|
{
|
|
value = value->load_order_next();
|
|
return true;
|
|
}
|
|
};
|
|
|
|
// provides the cached functions which use Derive classes methods
|
|
template<class Derived, class DefaultType = void*>
|
|
class lazy_base {
|
|
protected:
|
|
// This function is needed because every templated function
|
|
// with different args has its own static buffer
|
|
LAZY_IMPORTER_FORCEINLINE static void*& _cache() noexcept
|
|
{
|
|
static void* value = nullptr;
|
|
return value;
|
|
}
|
|
|
|
public:
|
|
template<class T = DefaultType>
|
|
LAZY_IMPORTER_FORCEINLINE static T safe() noexcept
|
|
{
|
|
return Derived::template get<T, safe_module_enumerator>();
|
|
}
|
|
|
|
template<class T = DefaultType, class Enum = unsafe_module_enumerator>
|
|
LAZY_IMPORTER_FORCEINLINE static T cached() noexcept
|
|
{
|
|
auto& cached = _cache();
|
|
if (!cached)
|
|
cached = Derived::template get<void*, Enum>();
|
|
|
|
return (T)(cached);
|
|
}
|
|
|
|
template<class T = DefaultType>
|
|
LAZY_IMPORTER_FORCEINLINE static T safe_cached() noexcept
|
|
{
|
|
return cached<T, safe_module_enumerator>();
|
|
}
|
|
};
|
|
|
|
template<offset_hash_pair OHP>
|
|
struct lazy_module : lazy_base<lazy_module<OHP>> {
|
|
template<class T = void*, class Enum = unsafe_module_enumerator>
|
|
LAZY_IMPORTER_FORCEINLINE static T get() noexcept
|
|
{
|
|
Enum e;
|
|
do {
|
|
if (hash(e.value->BaseDllName, get_offset(OHP)) == get_hash(OHP))
|
|
return (T)(e.value->DllBase);
|
|
} while (e.next());
|
|
return {};
|
|
}
|
|
|
|
template<class T = void*, class Ldr>
|
|
LAZY_IMPORTER_FORCEINLINE static T in(Ldr ldr) noexcept
|
|
{
|
|
safe_module_enumerator e(reinterpret_cast<const detail::win::LDR_DATA_TABLE_ENTRY_T*>(ldr));
|
|
do {
|
|
if (hash(e.value->BaseDllName, get_offset(OHP)) == get_hash(OHP))
|
|
return (T)(e.value->DllBase);
|
|
} while (e.next());
|
|
return {};
|
|
}
|
|
|
|
};
|
|
|
|
template<offset_hash_pair OHP, class T>
|
|
struct lazy_function : lazy_base<lazy_function<OHP, T>, T> {
|
|
using base_type = lazy_base<lazy_function<OHP, T>, T>;
|
|
|
|
template<class... Args>
|
|
LAZY_IMPORTER_FORCEINLINE decltype(auto) operator()(Args&&... args) const
|
|
{
|
|
#ifndef LAZY_IMPORTER_CACHE_OPERATOR_PARENS
|
|
return get()(LAZY_IMPORTER_CPP_FORWARD(Args, args)...);
|
|
#else
|
|
return this->cached()(LAZY_IMPORTER_CPP_FORWARD(Args, args)...);
|
|
#endif
|
|
}
|
|
|
|
template<class F = T, class Enum = unsafe_module_enumerator>
|
|
LAZY_IMPORTER_FORCEINLINE static F get() noexcept
|
|
{
|
|
// for backwards compatability.
|
|
// Before 2.0 it was only possible to resolve forwarded exports when
|
|
// this macro was enabled
|
|
#ifdef LAZY_IMPORTER_RESOLVE_FORWARDED_EXPORTS
|
|
return forwarded<F, Enum>();
|
|
#else
|
|
|
|
Enum e;
|
|
|
|
do {
|
|
#ifdef LAZY_IMPORTER_HARDENED_MODULE_CHECKS
|
|
if (!e.value->DllBase || !e.value->FullDllName.Length)
|
|
continue;
|
|
#endif
|
|
|
|
const exports_directory exports(e.value->DllBase);
|
|
|
|
if (exports) {
|
|
auto export_index = exports.size();
|
|
while (export_index--)
|
|
if (hash(exports.name(export_index), get_offset(OHP)) == get_hash(OHP))
|
|
return (F)(exports.address(export_index));
|
|
}
|
|
} while (e.next());
|
|
return {};
|
|
#endif
|
|
}
|
|
|
|
};
|
|
|
|
}
|
|
}
|