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Obfusk8Core.hpp
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2404 lines (2192 loc) · 135 KB
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#pragma once
#include <ctime>
#include <cstdint>
#pragma region XTEA
// --------------------------------------
#include "xtea8.hpp"
// --------------------------------------
#pragma endregion XTEA
#pragma region API_OBF
// --------------------------------------
#include "Resolve8.hpp"
#define STEALTH_API_OBF(dll, api) \
find_export_byhash(find_module_base(CT_HASH(dll)), CT_HASH(api))
#define STEALTH_API_OBFSTR(dll_lit, api_lit) \
STEALTH_API_OBF(OBFUSCATE_STRING(dll_lit).c_str(), OBFUSCATE_STRING(api_lit).c_str())
// --------------------------------------
#pragma endregion API_OBF
#pragma region ProcMAN
// --------------------------------------
#include "k8_ProcessManipulationAPIs/k8_ProcessManipulationAPIs.hpp"
using namespace K8_ProcessManipulationAPIs;
// --------------------------------------
#pragma endregion ProcMAN
#pragma region Crypt
// --------------------------------------
#include "k8_CryptographyAPIs/k8_CryptographyAPIs.hpp"
using namespace k8_CryptographyAPIs;
// --------------------------------------
#pragma endregion Crypt
#pragma region NET
// --------------------------------------
#include "k8_NetworkingAPIs/k8_NetworkingAPIs.hpp"
using namespace k8_NetworkingAPIs;
// --------------------------------------
#pragma endregion NET
#pragma region Reg
// --------------------------------------
#include "k8_RegistryAPIs/k8_RegistryAPIs.hpp"
using namespace RegistryAPIs;
// --------------------------------------
#pragma endregion Reg
#pragma region dec
// --------------------------------------
#if defined(_MSC_VER)
#include <intrin.h>
#endif
#if defined(__cpp_inline_variables)
extern volatile int _obf_global_opaque_seed;
#else
volatile int _obf_global_opaque_seed = 777 + (int)__TIME__[1] + (int)__TIME__[2];
#endif
#define NOP() \
do { \
volatile int __obf_nop_val = __COUNTER__ ^ (int)__LINE__; \
_obf_global_opaque_seed = (_obf_global_opaque_seed ^ __obf_nop_val ^ (int)std::time(nullptr)); \
(void)__obf_nop_val; \
} while(0)
#if defined(_MSC_VER)
#define K8_ASSUME(x) __assume(x)
#else
#define K8_ASSUME(x) ((void)0)
#endif
#if defined(_MSC_VER)
#define K8_FORCEINLINE __forceinline
#define K8_NOINLINE __declspec(noinline)
#else
#define K8_FORCEINLINE inline
#define K8_NOINLINE
#endif
// --------------------------------------
#pragma region dec
#pragma region _Opaque_Predicate
// --------------------------------------
// --- Opaque predicates for flattening ---
//
//
/*
#define OBF_OPAQUE_PREDICATE_TRUE_1() ((~0u >> 1) > 0 && (((__COUNTER__ + _obf_global_opaque_seed)) % 2 == ((__COUNTER__ + _obf_global_opaque_seed)) % 2))
#define OBF_OPAQUE_PREDICATE_TRUE_2(x) (((unsigned int)(x) ^ (0x49382668U + __COUNTER__ + (unsigned int)_obf_global_opaque_seed)) != (0xDEADBEEFU + __LINE__))
#define OBF_OPAQUE_PREDICATE_FALSE_1() (0 && (((__COUNTER__ + _obf_global_opaque_seed)) % 2 != ((__COUNTER__ + _obf_global_opaque_seed)) % 2))
#define OBF_OPAQUE_PREDICATE_FALSE_2(x) (((unsigned int)(x) == ((unsigned int)(x)+1U)) && ((unsigned int)(x) != ((unsigned int)(x)+1U)))
*/
//
//
#ifndef __cpp_inline_variables
extern volatile int _obf_global_opaque_seed;
#endif
#define OBF_OPAQUE_PREDICATE_TRUE_1() \
( \
( \
( ((~0u >> 1) > 0u) && \
(((unsigned int)(__COUNTER__) + (unsigned int)_obf_global_opaque_seed) % 2u == \
((unsigned int)(__COUNTER__) + (unsigned int)_obf_global_opaque_seed) % 2u) && \
((__LINE__ | (unsigned int)_obf_global_opaque_seed) >= 0u) \
) \
) \
&& ( \
(((unsigned int)_obf_global_opaque_seed | 0xCAFEBABEu) ^ 0xCAFEBABEu) <= (unsigned int)_obf_global_opaque_seed \
|| (((unsigned int)(__COUNTER__) ^ (unsigned int)(__LINE__)) & 1u) == (((unsigned int)(__COUNTER__) ^ (unsigned int)(__LINE__)) & 1u) \
) \
&& ( \
(((unsigned int)_obf_global_opaque_seed + 0x12345678u) ^ 0x87654321u) != (unsigned int)-1 \
) \
)
#define OBF_OPAQUE_PREDICATE_TRUE_2(x) \
( \
( \
(((unsigned int)(x) ^ (0x12345678u + (unsigned int)(__COUNTER__) + (unsigned int)_obf_global_opaque_seed)) != (0xDEADBEEFu + (unsigned int)(__LINE__))) \
|| ((((unsigned int)(x) + (unsigned int)_obf_global_opaque_seed) & 0xFu) == (((unsigned int)_obf_global_opaque_seed) & 0xFu)) \
) \
&& ( \
(((unsigned int)(x) | 0xF00DFACEu) == ((unsigned int)(x) | 0xF00DFACEu)) && \
((((unsigned int)(x) & 0xFFu) ^ ((unsigned int)_obf_global_opaque_seed & 0xFFu)) < 0x100u) \
) \
&& ( \
((((unsigned int)(x) + (unsigned int)_obf_global_opaque_seed + __LINE__) & 1u) == (((unsigned int)(x) + (unsigned int)_obf_global_opaque_seed + __LINE__) % 2u)) \
) \
)
#define OBF_OPAQUE_PREDICATE_FALSE_1() \
( \
0 && \
( \
((((unsigned int)(__COUNTER__) + (unsigned int)_obf_global_opaque_seed) % 2u) != \
(((unsigned int)(__COUNTER__) + (unsigned int)_obf_global_opaque_seed) % 2u)) \
&& (((unsigned int)(__LINE__) ^ (unsigned int)_obf_global_opaque_seed) == 0xDEADBEEF) \
) \
&& ( \
(((unsigned int)_obf_global_opaque_seed + 0xDEADu) == 0xBEEFu) \
) \
)
#define OBF_OPAQUE_PREDICATE_FALSE_2(x) \
( \
( \
(((unsigned int)(x) == ((unsigned int)(x) + 1u)) && ((unsigned int)(x) != ((unsigned int)(x) + 1u))) \
|| (((unsigned int)(x) == ((unsigned int)(x) + 1u)) && ((unsigned int)_obf_global_opaque_seed == 0xDEADBEEF)) \
) \
&& ( \
(((unsigned int)(x) ^ 0xABADBABAu) == (((unsigned int)(x) ^ 0xABADBABAu) + 1u)) \
) \
&& ( \
((((unsigned int)(x) + 0x1234u) | 0xFEDCu) == (((unsigned int)(x) + 0x1234u) | 0xFEDCu) - 1u) \
) \
)
// --------------------------------------
#pragma endregion _Opaque_Predicate
#pragma region MBA
// --------------------------------------
#define OBF_MBA_ADD(a, b) ( \
( ((unsigned int)(a) | (unsigned int)(b)) + ((unsigned int)(a) & (unsigned int)(b)) ) \
- ( ((unsigned int)(a) ^ (unsigned int)(b)) ) \
+ ( ((unsigned int)(a) ^ (unsigned int)(b)) + 2U * ((unsigned int)(a) & (unsigned int)(b)) ) \
- ( ((unsigned int)(a) | (unsigned int)(b)) - ((unsigned int)(a) & (unsigned int)(b)) ) \
+ ( ((unsigned int)(a) & ~(unsigned int)(b)) + ((unsigned int)(b) & ~(unsigned int)(a)) + 2U * ((unsigned int)(a) & (unsigned int)(b)) ) \
^ ( (((unsigned int)(a) | (unsigned int)(b))) - ((unsigned int)(a) & (unsigned int)(b)) ) \
^ ( (((unsigned int)(a)) | ((unsigned int)(b))) & ~(((unsigned int)(a)) & ((unsigned int)(b))) ) \
)
#define OBF_MBA_SUB(a, b) ( \
( ((unsigned int)(a)) + (~(unsigned int)(b)) + 1U ) \
^ ( ((unsigned int)(a)) ^ ((~(unsigned int)(b)) ^ 1U) ) \
+ ( ((unsigned int)(a) ^ ((unsigned int)(b) ^ 0xFFFFFFFFU)) + 2U * ((unsigned int)(a) & ((unsigned int)(b) ^ 0xFFFFFFFFU)) + 1U ) \
- ( ((unsigned int)(a)) & (((unsigned int)(a)) - ((unsigned int)(b))) ) \
+ ( (((unsigned int)(a) | ~(unsigned int)(b))) - (~(unsigned int)(b)) ) \
^ ( (((unsigned int)(a)) | ((unsigned int)(b))) - ((unsigned int)(a) & (unsigned int)(b)) ) \
)
#define OBF_MBA_XOR(a, b) ( \
( (((unsigned int)(a)) & (~(unsigned int)(b))) | ((~(unsigned int)(a)) & ((unsigned int)(b))) ) \
^ ( ((unsigned int)(a) | (unsigned int)(b)) - ((unsigned int)(a) & (unsigned int)(b)) ) \
^ ( ~(~(unsigned int)(a) & ~(unsigned int)(b)) & ~( (unsigned int)(a) & (unsigned int)(b) ) ) \
^ ( (((unsigned int)(a)) | ((unsigned int)(b))) & (~((unsigned int)(a)) | ~(unsigned int)(b)) ) \
+ ( ((unsigned int)(a) + (unsigned int)(b)) - 2 * ((unsigned int)(a) & (unsigned int)(b)) ) \
)
#define OBF_MBA_NOT(a) ( \
( ((unsigned int)(a)) ^ 0xFFFFFFFFU ) \
^ ( ~((unsigned int)(a)) ) \
+ ( (0U - 1U) ^ ((unsigned int)(a)) ) \
- ( 2 * (~((unsigned int)(a)) & ((unsigned int)(a))) ) \
+ ( 0xFFFFFFFFU - ((unsigned int)(a)) ) \
^ ( ~((unsigned int)(a)) | 0U ) \
)
#define OBF_MBA_MUL_CONST3(x) ( \
( (((unsigned int)(x)) << 1) + ((unsigned int)(x)) ) \
^ ( ((unsigned int)(x) << 2) - ((unsigned int)(x)) ) \
+ ( ((unsigned int)(x)) + ((unsigned int)(x)) + ((unsigned int)(x)) ) \
- ( ((unsigned int)(x)) & (~( ((unsigned int)(x)) << 1 )) ) \
+ ( (((unsigned int)(x)) | ((unsigned int)(x)) << 1 ) - ( ((unsigned int)(x)) & ((unsigned int)(x)) << 1 ) ) \
)
#define OBF_MBA_MUL_CONST_ALT(x, c) ( \
( ((unsigned int)(x)) << (c) ) - ((unsigned int)(x)) \
^ ( ((unsigned int)(x)) * ((1U << (c)) - 1U) ) \
+ ( ( ( ((unsigned int)(x)) << (c) ) ^ ((unsigned int)(x)) ) - ( ( ( ((unsigned int)(x)) << (c) ) & ((unsigned int)(x)) ) << 1 ) ) \
+ ( (((unsigned int)(x)) << (c)) | ((unsigned int)(x)) ) - ( ((unsigned int)(x)) & ((unsigned int)(x)) << (c) ) \
)
// --------------------------------------
#pragma endregion MBA
#pragma region JUNK
// --------------------------------------
#define OBF_JUNK_BODY_1 \
volatile int x_jb = __COUNTER__ + 11 + _obf_global_opaque_seed; \
x_jb ^= (0xDEADBEEFU + (int)__TIME__[0]); \
x_jb += (int)std::time(nullptr); \
return x_jb;
#define OBF_JUNK_BODY_2 \
volatile int x_jb = (__COUNTER__ * 3) ^ (_obf_global_opaque_seed); \
for(int i_jb=0; i_jb<((__COUNTER__%2)+2); ++i_jb) x_jb ^= i_jb; \
return x_jb;
#define OBF_JUNK_BODY_3 \
volatile int x_jb = (0x1234 | (99 + __COUNTER__)) ^ _obf_global_opaque_seed; \
x_jb &= (0xFFFFU + (int)__TIME__[1]); \
x_jb ^= (x_jb << (((__COUNTER__)%3)+1)%32); \
return x_jb;
#define OBF_JUNK_BODY_4 \
volatile int x_jb4 = __COUNTER__ ^ _obf_global_opaque_seed, y_jb4 = 7 + (__COUNTER__ % 5); \
x_jb4 += y_jb4 * y_jb4; \
x_jb4 ^= y_jb4; \
x_jb4 = (x_jb4 << 1) | (x_jb4 >> 31); \
return x_jb4;
#define OBF_JUNK_BODY_5 \
volatile int x_jb5 = (((int)std::time(nullptr) ^ _obf_global_opaque_seed + __COUNTER__) % 7); \
if (x_jb5 == 0) x_jb5 = 1; \
x_jb5 = (x_jb5 * 13) + 71; \
return x_jb5;
#define OBF_JUNK_BODY_6 \
volatile int x_jb = (int)std::time(nullptr) ^ (_obf_global_opaque_seed * __COUNTER__); \
int z = ((x_jb & 0xFF) * 0x1F1F1F1F) ^ (__COUNTER__ + _obf_global_opaque_seed); \
x_jb = z ^ (x_jb << 2); \
x_jb ^= ((int)__TIME__[2] | (int)__TIME__[3]); \
return x_jb;
#define OBF_JUNK_BODY_7 \
volatile int x_jb = ((int)std::time(nullptr) + _obf_global_opaque_seed + __COUNTER__) ^ 0x0F0F0F0F; \
x_jb = ((x_jb << 3) | (x_jb >> 29)) ^ (int)__LINE__; \
return x_jb;
#define OBF_DECLARE_JUNK_FUNC(N, body) K8_FORCEINLINE static int obf_junk_func_##N() { body }
namespace obf_junk_ns {
OBF_DECLARE_JUNK_FUNC(1, OBF_JUNK_BODY_1)
OBF_DECLARE_JUNK_FUNC(2, OBF_JUNK_BODY_2)
OBF_DECLARE_JUNK_FUNC(3, OBF_JUNK_BODY_3)
OBF_DECLARE_JUNK_FUNC(4, OBF_JUNK_BODY_4)
OBF_DECLARE_JUNK_FUNC(5, OBF_JUNK_BODY_5)
OBF_DECLARE_JUNK_FUNC(6, OBF_JUNK_BODY_6)
OBF_DECLARE_JUNK_FUNC(7, OBF_JUNK_BODY_7)
OBF_DECLARE_JUNK_FUNC(8, OBF_JUNK_BODY_1)
OBF_DECLARE_JUNK_FUNC(9, OBF_JUNK_BODY_2)
OBF_DECLARE_JUNK_FUNC(10, OBF_JUNK_BODY_3)
OBF_DECLARE_JUNK_FUNC(11, OBF_JUNK_BODY_4)
OBF_DECLARE_JUNK_FUNC(12, OBF_JUNK_BODY_5)
OBF_DECLARE_JUNK_FUNC(13, OBF_JUNK_BODY_6)
OBF_DECLARE_JUNK_FUNC(14, OBF_JUNK_BODY_7)
OBF_DECLARE_JUNK_FUNC(15, OBF_JUNK_BODY_1)
OBF_DECLARE_JUNK_FUNC(16, OBF_JUNK_BODY_2)
OBF_DECLARE_JUNK_FUNC(17, OBF_JUNK_BODY_3)
OBF_DECLARE_JUNK_FUNC(18, OBF_JUNK_BODY_4)
OBF_DECLARE_JUNK_FUNC(19, OBF_JUNK_BODY_5)
OBF_DECLARE_JUNK_FUNC(20, OBF_JUNK_BODY_6)
OBF_DECLARE_JUNK_FUNC(21, OBF_JUNK_BODY_7)
OBF_DECLARE_JUNK_FUNC(22, OBF_JUNK_BODY_1)
OBF_DECLARE_JUNK_FUNC(23, OBF_JUNK_BODY_2)
OBF_DECLARE_JUNK_FUNC(24, OBF_JUNK_BODY_3)
OBF_DECLARE_JUNK_FUNC(25, OBF_JUNK_BODY_4)
OBF_DECLARE_JUNK_FUNC(26, OBF_JUNK_BODY_5)
OBF_DECLARE_JUNK_FUNC(27, OBF_JUNK_BODY_6)
OBF_DECLARE_JUNK_FUNC(28, OBF_JUNK_BODY_7)
using obf_junk_func_ptr = int(*)();
static obf_junk_func_ptr obf_junk_func_table[] = {
obf_junk_func_1, obf_junk_func_2, obf_junk_func_3, obf_junk_func_4, obf_junk_func_5, obf_junk_func_6, obf_junk_func_7,
obf_junk_func_8, obf_junk_func_9, obf_junk_func_10, obf_junk_func_11, obf_junk_func_12, obf_junk_func_13, obf_junk_func_14,
obf_junk_func_15, obf_junk_func_16, obf_junk_func_17, obf_junk_func_18, obf_junk_func_19, obf_junk_func_20, obf_junk_func_21,
obf_junk_func_22, obf_junk_func_23, obf_junk_func_24, obf_junk_func_25, obf_junk_func_26, obf_junk_func_27, obf_junk_func_28
};
constexpr size_t obf_junk_func_table_size = sizeof(obf_junk_func_table)/sizeof(obf_junk_func_ptr);
}
#define OBF_CALL_ANY_LOCAL_JUNK() \
(obf_junk_ns::obf_junk_func_table[ \
((_obf_global_opaque_seed ^ __COUNTER__ ^ (int)std::time(nullptr) ^ (int)__LINE__) & 0x7FFFFFFF) % obf_junk_ns::obf_junk_func_table_size \
]())
// --------------------------------------
#pragma endregion JUNK
#pragma region OBF_JUMPS
// --------------------------------------
// --- Anti-Disassembly Jump Instructions ---
// --- Jump Instructions with the Same Target ---
// These will always jump to TARGET_LABEL, but through obfuscated means
#define OBF_JUMP_SKEW_1(TARGET_LABEL) \
do { \
NOP(); \
if (OBF_OPAQUE_PREDICATE_TRUE_1()) { \
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, (int)__LINE__ + OBF_CALL_ANY_LOCAL_JUNK()); \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_2(TARGET_LABEL) \
do { \
volatile unsigned int _skew_val = OBF_MBA_ADD((unsigned int)__COUNTER__, (unsigned int)_obf_global_opaque_seed); \
_skew_val = OBF_MBA_XOR(_skew_val, (unsigned int)OBF_CALL_ANY_LOCAL_JUNK()); \
if (OBF_OPAQUE_PREDICATE_TRUE_2(_skew_val)) { \
NOP(); \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_3(TARGET_LABEL) \
do { \
OBF_CALL_ANY_LOCAL_JUNK(); \
_obf_global_opaque_seed = OBF_MBA_SUB(_obf_global_opaque_seed, (int)__TIME__[0] ^ (int)__COUNTER__); \
if (((_obf_global_opaque_seed ^ (int)__LINE__) | 1) != 0) { \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_4(TARGET_LABEL) \
do { \
volatile int _s4_decoy = OBF_MBA_MUL_CONST3(_obf_global_opaque_seed ^ (int)__LINE__); \
_s4_decoy += OBF_CALL_ANY_LOCAL_JUNK(); \
if (OBF_OPAQUE_PREDICATE_TRUE_1() && (_s4_decoy != _s4_decoy + 1)) { \
NOP(); \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_5(TARGET_LABEL) \
do { \
_obf_global_opaque_seed = OBF_MBA_NOT(_obf_global_opaque_seed ^ (int)OBF_CALL_ANY_LOCAL_JUNK()); \
unsigned int val_a = (unsigned int)__LINE__ ^ (unsigned int)_obf_global_opaque_seed; \
unsigned int val_b = OBF_MBA_XOR(val_a, 0U); \
if (OBF_MBA_ADD(val_a, OBF_MBA_NOT(val_b)) == 0xFFFFFFFFU) { \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_6(TARGET_LABEL) \
do { \
NOP(); NOP(); \
if (OBF_OPAQUE_PREDICATE_TRUE_2((unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ (unsigned int)_obf_global_opaque_seed)) { \
_obf_global_opaque_seed = OBF_MBA_ADD(_obf_global_opaque_seed, (int)__COUNTER__); \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_7(TARGET_LABEL) \
do { \
volatile int _s7_temp1 = OBF_CALL_ANY_LOCAL_JUNK(); \
volatile int _s7_temp2 = OBF_CALL_ANY_LOCAL_JUNK(); \
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, _s7_temp1 ^ _s7_temp2 ^ (int)__LINE__); \
if (OBF_OPAQUE_PREDICATE_TRUE_1() || OBF_OPAQUE_PREDICATE_FALSE_1()) { \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_8(TARGET_LABEL) \
do { \
unsigned int _s8_v = (unsigned int)_obf_global_opaque_seed + (unsigned int)__COUNTER__; \
if (OBF_MBA_XOR(_s8_v, OBF_MBA_XOR(_s8_v, 0U)) == 0U) { \
_obf_global_opaque_seed = OBF_MBA_ADD(_obf_global_opaque_seed, OBF_CALL_ANY_LOCAL_JUNK()); \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_9(TARGET_LABEL) \
do { \
int junk_res = OBF_CALL_ANY_LOCAL_JUNK(); \
if (OBF_OPAQUE_PREDICATE_TRUE_2((unsigned int)junk_res)) { \
_obf_global_opaque_seed = OBF_MBA_SUB(_obf_global_opaque_seed, junk_res ^ (int)__TIME__[1]); \
NOP(); \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
#define OBF_JUMP_SKEW_10(TARGET_LABEL) \
do { \
if (!OBF_OPAQUE_PREDICATE_FALSE_1()) { \
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, (int)OBF_CALL_ANY_LOCAL_JUNK() + (int)__LINE__); \
goto TARGET_LABEL; \
} \
K8_ASSUME(0); \
} while(0)
// --- Jump Instructions with a Constant Condition ---
// These will use opaque predicates to determine if the jump to TARGET_LABEL occurs
// FALLTHROUGH_CODE_BLOCK will be executed if the jump is NOT taken (predicate is false).
#define OBF_JUMP_CONST_COND_TRUE_1(TARGET_LABEL, FALLTHROUGH_CODE_BLOCK) \
do { \
volatile int _cc_val1 = OBF_MBA_ADD(__COUNTER__, _obf_global_opaque_seed); \
if (OBF_OPAQUE_PREDICATE_TRUE_1()) { \
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, _cc_val1 ^ (int)__LINE__); \
OBF_CALL_ANY_LOCAL_JUNK(); \
goto TARGET_LABEL; \
} else { \
K8_ASSUME(0); \
FALLTHROUGH_CODE_BLOCK \
} \
} while(0)
#define OBF_JUMP_CONST_COND_FALSE_1(TARGET_LABEL, FALLTHROUGH_CODE_BLOCK) \
do { \
volatile int _cc_val2 = OBF_MBA_SUB(__COUNTER__, _obf_global_opaque_seed); \
if (OBF_OPAQUE_PREDICATE_FALSE_1()) { \
\
_obf_global_opaque_seed = OBF_MBA_ADD(_obf_global_opaque_seed, _cc_val2 ^ (int)__LINE__ ^ OBF_CALL_ANY_LOCAL_JUNK()); \
goto TARGET_LABEL; \
} else { \
\
FALLTHROUGH_CODE_BLOCK \
} \
NOP(); \
} while(0)
#define OBF_JUMP_CONST_COND_TRUE_2(TARGET_LABEL, FALLTHROUGH_CODE_BLOCK) \
do { \
unsigned int _cc_val3 = (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ (unsigned int)__TIME__[2]; \
if (OBF_OPAQUE_PREDICATE_TRUE_2(_cc_val3)) { \
_obf_global_opaque_seed = OBF_MBA_MUL_CONST3(_obf_global_opaque_seed ^ (int)_cc_val3); \
goto TARGET_LABEL; \
} else { \
K8_ASSUME(0); \
FALLTHROUGH_CODE_BLOCK \
} \
} while(0)
#define OBF_JUMP_CONST_COND_FALSE_2(TARGET_LABEL, FALLTHROUGH_CODE_BLOCK) \
do { \
unsigned int _cc_val4 = (unsigned int)_obf_global_opaque_seed + (unsigned int)__COUNTER__; \
if (OBF_OPAQUE_PREDICATE_FALSE_2(_cc_val4)) { \
_obf_global_opaque_seed = OBF_MBA_NOT(_obf_global_opaque_seed + (int)_cc_val4); \
OBF_CALL_ANY_LOCAL_JUNK(); \
goto TARGET_LABEL; \
} else { \
FALLTHROUGH_CODE_BLOCK \
} \
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, (int)_cc_val4); \
} while(0)
#define OBF_JUMP_MERGED_COND_SKEW_TRUE(TARGET_LABEL, FALLTHROUGH_CODE_BLOCK) \
do { \
if (OBF_OPAQUE_PREDICATE_TRUE_1()) { \
OBF_JUMP_SKEW_1(TARGET_LABEL); \
} else { \
K8_ASSUME(0); \
FALLTHROUGH_CODE_BLOCK \
} \
} while(0)
// --------------------------------------
#pragma endregion OBF_JUMPS
#pragma region OBF_STATE_TRANSITIONS
// --------------------------------------
namespace obf_dispatch_helpers
{
enum class DispatchBlockID
{
INITIALIZE_DISPATCH_LOOP, CHECK_MAIN_LOOP_CONDITION,
DETERMINE_AND_EXECUTE_HANDLER, MAYBE_CALL_EXTRA_JUNK,
EXECUTE_EXTRA_JUNK, DETERMINE_PC_UPDATE_PATH,
EXECUTE_PC_UPDATE_PATH_A, EXECUTE_PC_UPDATE_PATH_B,
INCREMENT_MAIN_LOOP_COUNTER, EXIT_DISPATCH_LOOP,
DEAD_CODE_TARGET_BLOCK
};
}
// --- Anti-Disassembly State Transition ---
// Shared next_state_var_name will be passed to these.
// Example: OBF_SET_NEXT_STATE_SKEW_1(DispatchBlockID::SOME_TARGET, local_next_state_var);
// --- Unconditional State Transitions ---
// These will always set next_state_var_name to TARGET_BLOCK_ID
#define OBF_SET_NEXT_STATE_SKEW_1(TARGET_BLOCK_ID, next_state_var_name) \
do { \
NOP(); \
if (OBF_OPAQUE_PREDICATE_TRUE_1()) { \
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, (int)__LINE__ + OBF_CALL_ANY_LOCAL_JUNK()); \
(next_state_var_name) = (TARGET_BLOCK_ID); \
} else { \
K8_ASSUME(0); \
(next_state_var_name) = obf_dispatch_helpers::DispatchBlockID::DEAD_CODE_TARGET_BLOCK; \
} \
} while(0)
#define OBF_SET_NEXT_STATE_SKEW_2(TARGET_BLOCK_ID, next_state_var_name) \
do { \
volatile unsigned int _skew_val = OBF_MBA_ADD((unsigned int)__COUNTER__, (unsigned int)_obf_global_opaque_seed); \
_skew_val = OBF_MBA_XOR(_skew_val, (unsigned int)OBF_CALL_ANY_LOCAL_JUNK()); \
if (OBF_OPAQUE_PREDICATE_TRUE_2(_skew_val)) { \
NOP(); \
(next_state_var_name) = (TARGET_BLOCK_ID); \
} else { \
K8_ASSUME(0); \
(next_state_var_name) = obf_dispatch_helpers::DispatchBlockID::DEAD_CODE_TARGET_BLOCK; \
} \
} while(0)
#define OBF_SET_NEXT_STATE_SKEW_3(TARGET_BLOCK_ID, next_state_var_name) \
do { \
OBF_CALL_ANY_LOCAL_JUNK(); \
_obf_global_opaque_seed = OBF_MBA_SUB(_obf_global_opaque_seed, (int)__TIME__[0] ^ (int)__COUNTER__); \
if (((_obf_global_opaque_seed ^ (int)__LINE__) | 1) != 0) { \
(next_state_var_name) = (TARGET_BLOCK_ID); \
} else { K8_ASSUME(0); (next_state_var_name) = obf_dispatch_helpers::DispatchBlockID::DEAD_CODE_TARGET_BLOCK; } \
} while(0)
#define OBF_SET_NEXT_STATE_SKEW_4(TARGET_BLOCK_ID, next_state_var_name) \
do { \
if (OBF_OPAQUE_PREDICATE_TRUE_1() && OBF_OPAQUE_PREDICATE_TRUE_2(0xCAFE)) { \
_obf_global_opaque_seed = OBF_MBA_ADD(_obf_global_opaque_seed, OBF_CALL_ANY_LOCAL_JUNK()); \
(next_state_var_name) = (TARGET_BLOCK_ID); \
} else { K8_ASSUME(0); (next_state_var_name) = obf_dispatch_helpers::DispatchBlockID::DEAD_CODE_TARGET_BLOCK; } \
} while(0)
#define OBF_SET_NEXT_STATE_SKEW_5(TARGET_BLOCK_ID, next_state_var_name) \
OBF_SET_NEXT_STATE_SKEW_1(TARGET_BLOCK_ID, next_state_var_name)
#define OBF_SET_NEXT_STATE_SKEW_6(TARGET_BLOCK_ID, next_state_var_name) \
OBF_SET_NEXT_STATE_SKEW_2(TARGET_BLOCK_ID, next_state_var_name)
#define OBF_SET_NEXT_STATE_SKEW_7(TARGET_BLOCK_ID, next_state_var_name) \
OBF_SET_NEXT_STATE_SKEW_3(TARGET_BLOCK_ID, next_state_var_name)
#define OBF_SET_NEXT_STATE_SKEW_8(TARGET_BLOCK_ID, next_state_var_name) \
OBF_SET_NEXT_STATE_SKEW_4(TARGET_BLOCK_ID, next_state_var_name)
#define OBF_SET_NEXT_STATE_SKEW_9(TARGET_BLOCK_ID, next_state_var_name) \
OBF_SET_NEXT_STATE_SKEW_1(TARGET_BLOCK_ID, next_state_var_name)
#define OBF_SET_NEXT_STATE_SKEW_10(TARGET_BLOCK_ID, next_state_var_name) \
OBF_SET_NEXT_STATE_SKEW_2(TARGET_BLOCK_ID, next_state_var_name)
// --- Conditional State Transitions ---
// These will use opaque predicates to determine if next_state_var_name is set to
// TARGET_BLOCK_ID_IF_TRUE or TARGET_BLOCK_ID_IF_FALSE
#define OBF_SET_NEXT_STATE_CONST_COND_TRUE_1(TARGET_BLOCK_ID_IF_TRUE, TARGET_BLOCK_ID_IF_FALSE, next_state_var_name) \
do { \
volatile int _cc_val1 = OBF_MBA_ADD(__COUNTER__, _obf_global_opaque_seed); \
if (OBF_OPAQUE_PREDICATE_TRUE_1()) { \
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, _cc_val1 ^ (int)__LINE__); \
OBF_CALL_ANY_LOCAL_JUNK(); \
(next_state_var_name) = (TARGET_BLOCK_ID_IF_TRUE); \
} else { \
K8_ASSUME(0); \
(next_state_var_name) = (TARGET_BLOCK_ID_IF_FALSE); \
} \
} while(0)
#define OBF_SET_NEXT_STATE_CONST_COND_FALSE_1(TARGET_BLOCK_ID_IF_TRUE_PATH_IS_DEAD, TARGET_BLOCK_ID_IF_FALSE_PATH_IS_LIVE, next_state_var_name) \
do { \
volatile int _cc_val2 = OBF_MBA_SUB(__COUNTER__, _obf_global_opaque_seed); \
if (OBF_OPAQUE_PREDICATE_FALSE_1()) { \
_obf_global_opaque_seed = OBF_MBA_ADD(_obf_global_opaque_seed, _cc_val2 ^ (int)__LINE__ ^ OBF_CALL_ANY_LOCAL_JUNK()); \
(next_state_var_name) = (TARGET_BLOCK_ID_IF_TRUE_PATH_IS_DEAD); \
} else { \
(next_state_var_name) = (TARGET_BLOCK_ID_IF_FALSE_PATH_IS_LIVE); \
} \
NOP(); \
} while(0)
#define OBF_SET_NEXT_STATE_CONST_COND_TRUE_2(TARGET_BLOCK_ID_IF_TRUE, TARGET_BLOCK_ID_IF_FALSE, next_state_var_name) \
OBF_SET_NEXT_STATE_CONST_COND_TRUE_1(TARGET_BLOCK_ID_IF_TRUE, TARGET_BLOCK_ID_IF_FALSE, next_state_var_name)
#define OBF_SET_NEXT_STATE_CONST_COND_FALSE_2(TARGET_BLOCK_ID_IF_TRUE_PATH_IS_DEAD, TARGET_BLOCK_ID_IF_FALSE_PATH_IS_LIVE, next_state_var_name) \
OBF_SET_NEXT_STATE_CONST_COND_FALSE_1(TARGET_BLOCK_ID_IF_TRUE_PATH_IS_DEAD, TARGET_BLOCK_ID_IF_FALSE_PATH_IS_LIVE, next_state_var_name)
#define OBF_SET_NEXT_STATE_MERGED_COND_SKEW_TRUE(TARGET_BLOCK_ID_ULTIMATE_IF_TRUE, TARGET_BLOCK_ID_IF_OUTER_FALSE, next_state_var_name) \
do { \
if (OBF_OPAQUE_PREDICATE_TRUE_1()) { \
OBF_SET_NEXT_STATE_SKEW_1(TARGET_BLOCK_ID_ULTIMATE_IF_TRUE, next_state_var_name); \
} else { \
K8_ASSUME(0); \
(next_state_var_name) = (TARGET_BLOCK_ID_IF_OUTER_FALSE); \
} \
} while(0)
// --------------------------------------
#pragma endregion OBF_STATE_TRANSITIONS
#pragma region VM_ENGINE
// --------------------------------------
namespace obf_vm_engine {
struct VMState {
volatile unsigned int r0, r1, r2;
volatile unsigned int pc;
volatile unsigned int dispatch_key;
volatile int& global_seed_ref;
VMState(volatile int& seed_ref_param)
: r0(0U), r1(0U), r2(0U), pc(0U), dispatch_key(0U), global_seed_ref(seed_ref_param) {}
};
using vm_handler_ptr_t = void (*)(VMState&, int, char**);
#define VM_OPQ_TRUE() (((((unsigned int)(__LINE__ ^ _obf_global_opaque_seed)) | 1u) & 1u) == 1u)
#define VM_OPQ_FALSE() ((((unsigned int)(__LINE__ ^ _obf_global_opaque_seed)) & 1u) == 0u && 0)
K8_NOINLINE static void vm_handle_op_arith(VMState& s, int ac, char** av) {
NOP();
unsigned int tmp = OBF_MBA_XOR(s.r1, (unsigned int)(__LINE__));
tmp = OBF_MBA_ADD(tmp, s.global_seed_ref ^ s.pc);
s.r0 = OBF_MBA_ADD(s.r0, tmp);
s.r1 = OBF_MBA_SUB(s.r1, (s.r2 + (unsigned int)ac + (s.pc * 7U)) ^ OBF_CALL_ANY_LOCAL_JUNK());
s.r2 = OBF_MBA_XOR(s.r2, s.dispatch_key ^ (unsigned int)(av && ac > 0 && av[0] ? (std::uintptr_t)av[0] : __COUNTER__));
s.dispatch_key = OBF_MBA_ADD(s.dispatch_key, s.r0 ^ 0x1A2B3C4DU ^ s.r1);
s.pc = OBF_MBA_ADD(s.pc, 1U ^ (s.r2 & 1U));
s.global_seed_ref = OBF_MBA_XOR(s.global_seed_ref, (int)(s.r0 ^ s.r1 ^ s.pc));
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { OBF_CALL_ANY_LOCAL_JUNK(); }
}
K8_NOINLINE static void vm_handle_op_bitwise_logic(VMState& s, int ac, char** av) {
NOP();
s.r0 = OBF_MBA_XOR((s.r0 & s.r1) | (OBF_MBA_NOT(s.r0) & s.r2), (s.r1 ^ s.r2));
s.r1 = (s.r1 << ((s.pc % 3) + 1)) | (s.r1 >> (32 - ((s.pc % 3) + 1)));
if (OBF_OPAQUE_PREDICATE_TRUE_1()) {
s.r2 = OBF_MBA_XOR(s.r2, 0xDEADBEEFU + (unsigned int)s.global_seed_ref);
} else {
s.r2 = OBF_MBA_ADD(s.r2, 0xCAFEFACU);
}
s.dispatch_key = OBF_MBA_SUB(s.dispatch_key, (s.r1 ^ 0x55AA55AAU) ^ s.r2);
s.pc = OBF_MBA_ADD(s.pc, ((s.r0 & 1U) ? 2U : 1U) + ((s.r1 & 1U) ? 1U : 0U));
s.global_seed_ref = OBF_MBA_ADD(s.global_seed_ref, (int)(s.r2 ^ s.dispatch_key ^ s.pc));
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { OBF_CALL_ANY_LOCAL_JUNK(); }
}
K8_NOINLINE static void vm_handle_op_key_mangle(VMState& s, int ac, char** av) {
NOP();
unsigned int temp_key = s.dispatch_key ^ (unsigned int)__LINE__;
temp_key = OBF_MBA_MUL_CONST3(temp_key ^ (s.r0 | s.r1));
temp_key = OBF_MBA_ADD(temp_key, s.r0 ^ s.r1 ^ s.r2 ^ s.pc);
temp_key = (temp_key << ((s.global_seed_ref % 5) + 1)) | (temp_key >> (32 - ((s.global_seed_ref % 5) + 1)));
temp_key ^= (unsigned int)OBF_CALL_ANY_LOCAL_JUNK();
s.dispatch_key = temp_key;
s.r0 = OBF_MBA_XOR(s.r0, s.dispatch_key ^ s.r2);
s.pc = OBF_MBA_SUB(s.pc, (s.r1 & 7U) ? 1U : 3U);
s.global_seed_ref = OBF_MBA_XOR(s.global_seed_ref, (int)s.dispatch_key ^ s.r2);
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { OBF_CALL_ANY_LOCAL_JUNK(); }
}
K8_NOINLINE static void vm_handle_op_junk_sequence(VMState& s, int ac, char** av) {
NOP();
s.r0 = OBF_MBA_ADD(s.r0, (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ s.r1);
s.r1 = OBF_MBA_XOR(s.r1, (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ s.r2 ^ (unsigned int)ac);
s.r2 = OBF_MBA_SUB(s.r2, (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ (unsigned int)(av && ac > 0 && av[0] ? av[0][0] : __LINE__));
s.dispatch_key = OBF_MBA_NOT(s.dispatch_key ^ s.r0 ^ s.r2);
s.pc = OBF_MBA_ADD(s.pc, 1U + (s.r2 & 3U));
s.global_seed_ref = OBF_MBA_XOR(s.global_seed_ref, (int)(s.r0 ^ s.r1 ^ s.r2 ^ s.pc));
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { OBF_CALL_ANY_LOCAL_JUNK(); }
NOP();
}
K8_NOINLINE static void vm_handle_op_conditional_update(VMState& s, int ac, char** av) {
NOP();
if (OBF_OPAQUE_PREDICATE_TRUE_2(s.r0 ^ s.dispatch_key ^ (unsigned int)s.global_seed_ref)) {
s.r0 = OBF_MBA_ADD(s.r0, s.r1 ^ (s.pc | 0xA5A5U));
s.r1 = OBF_MBA_SUB(s.r1, s.r2 ^ (s.pc & 0x5A5AU));
s.dispatch_key = OBF_MBA_XOR(s.dispatch_key, (s.pc * 0x1001U) ^ s.r1);
} else {
s.r0 = OBF_MBA_XOR(s.r0, 0xBAD0BAD0U ^ s.r2);
s.r1 = OBF_MBA_NOT(s.r1 ^ s.r0);
s.dispatch_key = OBF_MBA_ADD(s.dispatch_key, 0xC001C001U ^ s.r0);
}
s.r2 = OBF_MBA_XOR(s.r2, (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ s.r0);
s.pc = OBF_MBA_ADD(s.pc, ((s.r1 & 1U) + 1U) ^ (s.r2 & 3U));
s.global_seed_ref = OBF_MBA_SUB(s.global_seed_ref, (int)(s.r0 + s.r1 + s.pc));
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { OBF_CALL_ANY_LOCAL_JUNK(); }
}
K8_NOINLINE static void vm_handle_op_mem_sim(VMState& s, int ac, char** av) {
NOP();
static unsigned int obf_vm_memory[32];
unsigned int addr1 = (s.r0 ^ s.pc ^ s.dispatch_key) % 32;
unsigned int addr2 = (s.r1 ^ s.dispatch_key ^ s.r2) % 32;
if (OBF_OPAQUE_PREDICATE_TRUE_1()) { obf_vm_memory[addr1] = OBF_MBA_ADD(s.r2, s.dispatch_key ^ (s.r1 & 0xAA55U)); }
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { obf_vm_memory[addr2] = OBF_MBA_XOR(s.r0, s.r1 ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK()); }
s.r0 = OBF_MBA_XOR(s.r0, obf_vm_memory[addr2]);
s.r1 = OBF_MBA_ADD(s.r1, obf_vm_memory[addr1 % 8] ^ s.r2);
s.dispatch_key = OBF_MBA_SUB(s.dispatch_key, obf_vm_memory[(addr1 + addr2) % 32]);
s.pc = OBF_MBA_ADD(s.pc, 1U ^ (s.dispatch_key & 1U));
s.global_seed_ref = OBF_MBA_XOR(s.global_seed_ref, (int)obf_vm_memory[s.pc % 32]);
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { OBF_CALL_ANY_LOCAL_JUNK(); }
}
K8_NOINLINE static void vm_handle_op_pc_mangle(VMState& s, int ac, char** av) {
NOP();
s.pc = OBF_MBA_XOR(s.pc, s.r0 ^ s.r1 ^ s.dispatch_key ^ s.r2);
s.pc = OBF_MBA_ADD(s.pc, (unsigned int)__LINE__ + (s.dispatch_key & 0x3F));
s.pc %= 256;
s.r0 = OBF_MBA_ADD(s.r0, s.pc ^ (s.r1 & 0xF0F0U));
s.dispatch_key = OBF_MBA_NOT(s.dispatch_key ^ s.pc);
s.global_seed_ref = OBF_MBA_ADD(s.global_seed_ref, (int)s.pc ^ (int)OBF_CALL_ANY_LOCAL_JUNK());
if (!OBF_OPAQUE_PREDICATE_FALSE_1()) { s.r1 = OBF_MBA_XOR(s.r1, (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ s.r2); }
}
K8_NOINLINE
static
void
vm_handle_op_multi_mba(VMState& s,
int ac,
char** av)
{
NOP();
s.r0 = OBF_MBA_ADD(OBF_MBA_XOR(s.r0, s.dispatch_key ^ s.pc), OBF_MBA_MUL_CONST3(s.r1 ^ s.r2));
s.r1 = OBF_MBA_SUB(OBF_MBA_NOT(s.r1 ^ s.r0), OBF_MBA_XOR(s.r2 ^ s.r0, s.pc));
s.r2 = OBF_MBA_ADD(OBF_MBA_MUL_CONST_ALT(s.r2, 3), OBF_MBA_SUB(s.r0, s.r1) ^ s.dispatch_key);
s.dispatch_key = OBF_MBA_XOR(s.dispatch_key, OBF_MBA_NOT(s.r0 ^ s.r1 ^ s.r2));
s.pc = OBF_MBA_ADD(s.pc, 1U + (s.r0 & 1U));
s.global_seed_ref = OBF_MBA_XOR(s.global_seed_ref, (int)OBF_CALL_ANY_LOCAL_JUNK() ^ (int)s.dispatch_key);
if (VM_OPQ_TRUE() || VM_OPQ_FALSE()) { OBF_CALL_ANY_LOCAL_JUNK(); }
}
K8_NOINLINE static void _obf_dummy_func_A_impl(VMState& s, int i) {
OBF_CALL_ANY_LOCAL_JUNK();
s.r0 = OBF_MBA_ADD(s.r0, (unsigned int)i ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ (unsigned int)__LINE__);
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, (int)s.r0);
}
K8_NOINLINE static void _obf_dummy_func_B_impl(VMState& s, int i) {
OBF_CALL_ANY_LOCAL_JUNK();
s.r1 = OBF_MBA_XOR(s.r1, (unsigned int)i + (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() + (unsigned int)__COUNTER__);
_obf_global_opaque_seed = OBF_MBA_ADD(_obf_global_opaque_seed, (int)s.r1);
}
K8_NOINLINE static void _obf_exit_path_norm_impl(VMState& s, int i) {
OBF_CALL_ANY_LOCAL_JUNK();
s.r2 = OBF_MBA_SUB(s.r2, (unsigned int)i ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ (unsigned int)s.pc);
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, (int)s.r2 + i);
}
K8_NOINLINE static void _obf_exit_path_alt_impl(VMState& s, int i) {
OBF_CALL_ANY_LOCAL_JUNK();
s.dispatch_key = OBF_MBA_NOT(s.dispatch_key + (unsigned int)i + (unsigned int)OBF_CALL_ANY_LOCAL_JUNK());
_obf_global_opaque_seed = OBF_MBA_SUB(_obf_global_opaque_seed, (int)s.dispatch_key ^ i);
}
// Static functions SEH (C2712-safe versions)
K8_NOINLINE static void _seh_wrapped_vm_register_modification(VMState& s, unsigned int val) {
#if defined(_MSC_VER)
__try {
if (((s.global_seed_ref ^ __COUNTER__) % 13) == 1 && OBF_OPAQUE_PREDICATE_TRUE_1()) {
volatile int* p_crash = nullptr; *p_crash = val;
}
s.r0 = OBF_MBA_ADD(s.r0, val ^ (unsigned int)__TIME__[0] ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK());
} __except(EXCEPTION_EXECUTE_HANDLER) {
s.r0 = OBF_MBA_XOR(s.r0, 0xDEADBEEF ^ (unsigned int)GetExceptionCode() ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK());
s.global_seed_ref = OBF_MBA_XOR(s.global_seed_ref, (int)GetExceptionCode());
}
#else
s.r0 = OBF_MBA_ADD(s.r0, val ^ (unsigned int)__TIME__[0] ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK());
#endif
OBF_CALL_ANY_LOCAL_JUNK(); NOP();
}
K8_NOINLINE static void _seh_forced_exception_effect(VMState& s) {
#if defined(_MSC_VER)
__try {
if (OBF_OPAQUE_PREDICATE_TRUE_1()) {
volatile int* _seh_p_force = nullptr; *_seh_p_force = __LINE__ ^ OBF_CALL_ANY_LOCAL_JUNK();
} else { K8_ASSUME(0); }
} __except (EXCEPTION_EXECUTE_HANDLER) {
s.r1 = OBF_MBA_XOR(s.r1, 0xBADCAFE ^ (unsigned int)GetExceptionCode() ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK());
s.global_seed_ref = OBF_MBA_XOR(s.global_seed_ref, (int)GetExceptionCode() ^ (int)s.pc);
}
#else
s.r1 = OBF_MBA_XOR(s.r1, 0xBADCAFE ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK());
#endif
OBF_CALL_ANY_LOCAL_JUNK(); NOP();
}
static vm_handler_ptr_t handler_table_raw[8] = {
vm_handle_op_arith, vm_handle_op_bitwise_logic, vm_handle_op_key_mangle,
vm_handle_op_junk_sequence, vm_handle_op_conditional_update, vm_handle_op_mem_sim,
vm_handle_op_pc_mangle, vm_handle_op_multi_mba
};
constexpr size_t HANDLER_COUNT = sizeof(handler_table_raw)/sizeof(vm_handler_ptr_t);
static vm_handler_ptr_t* get_mem_dispatch_table(VMState& s) {
static vm_handler_ptr_t scrambled[HANDLER_COUNT] = {};
static bool inited = false;
if (!inited) {
unsigned int k = (unsigned int)s.global_seed_ref ^ (unsigned int)std::time(nullptr);
for (size_t i = 0; i < HANDLER_COUNT; ++i) scrambled[i] = nullptr;
for (size_t i = 0; i < HANDLER_COUNT; ++i) {
size_t idx = (k + i*5 + (k>>3) + (i<<2)) % HANDLER_COUNT;
while (scrambled[idx]) idx = (idx+1)%HANDLER_COUNT;
scrambled[idx] = handler_table_raw[i];
}
inited = true;
}
return scrambled;
}
static
size_t
reg_dispatch_idx(const VMState& s)
{
unsigned int h = s.r0 ^ ((s.r1<<5)|(s.r1>>27)) ^ (s.r2*19U) ^ (s.pc*7U) ^ s.dispatch_key ^ (unsigned int)s.global_seed_ref;
h ^= (h >> 13) ^ (h << 17);
h *= 0x9e3779b1U;
return (h ^ (h>>11)) % HANDLER_COUNT;
}
static
size_t
mixed_dispatch_idx(VMState& s)
{
size_t idx = reg_dispatch_idx(s);
if (OBF_OPAQUE_PREDICATE_TRUE_1() && ((s.r0 ^ s.r1 ^ s.r2 ^ s.dispatch_key) & 1U)) {
idx = (idx + 3 + (s.pc & 2U)) % HANDLER_COUNT;
}
if (OBF_OPAQUE_PREDICATE_TRUE_2(s.global_seed_ref) && ((s.dispatch_key & 4U) == 0)) {
idx = (idx ^ 5U) % HANDLER_COUNT;
}
if (OBF_OPAQUE_PREDICATE_FALSE_1() || (s.r2 & 2U)) {
idx = (idx + HANDLER_COUNT - 1) % HANDLER_COUNT;
}
idx = (idx + ((unsigned int)OBF_CALL_ANY_LOCAL_JUNK() & 3U)) % HANDLER_COUNT;
return idx;
}
K8_NOINLINE
static
void
dsptch(VMState& s,
int argc,
char** argv,
unsigned int steps)
{
using obf_dispatch_helpers::DispatchBlockID;
auto* mem_table = get_mem_dispatch_table(s);
unsigned int i = 0;
size_t idx = 0;
DispatchBlockID current_block_id = DispatchBlockID::INITIALIZE_DISPATCH_LOOP;
DispatchBlockID next_block_id_for_switch = DispatchBlockID::INITIALIZE_DISPATCH_LOOP;
bool machine_is_running = true;
while (machine_is_running) {
current_block_id = next_block_id_for_switch;
switch (current_block_id) {
case DispatchBlockID::INITIALIZE_DISPATCH_LOOP:
NOP();
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, __LINE__ ^ (int)i);
OBF_SET_NEXT_STATE_SKEW_1(DispatchBlockID::CHECK_MAIN_LOOP_CONDITION, next_block_id_for_switch);
break;
case DispatchBlockID::CHECK_MAIN_LOOP_CONDITION:
if (i < steps) {
OBF_SET_NEXT_STATE_SKEW_2(DispatchBlockID::DETERMINE_AND_EXECUTE_HANDLER, next_block_id_for_switch);
} else {
OBF_SET_NEXT_STATE_SKEW_3(DispatchBlockID::EXIT_DISPATCH_LOOP, next_block_id_for_switch);
}
break;
case DispatchBlockID::DETERMINE_AND_EXECUTE_HANDLER:
{
int dispatcher_type = ((s.dispatch_key ^ s.pc ^ s.global_seed_ref ^ i ^ (int)std::time(nullptr)) & 3);
_obf_global_opaque_seed = OBF_MBA_ADD(_obf_global_opaque_seed, dispatcher_type ^ (int)__COUNTER__ ^ (int)OBF_CALL_ANY_LOCAL_JUNK());
size_t local_idx_for_handler = 0;
if (dispatcher_type == 0) {
if (OBF_OPAQUE_PREDICATE_TRUE_1()) {
local_idx_for_handler = reg_dispatch_idx(s);
handler_table_raw[local_idx_for_handler](s, argc, argv);
} else { K8_ASSUME(0); }
} else if (dispatcher_type == 1) {
if (OBF_OPAQUE_PREDICATE_FALSE_1()) {
K8_ASSUME(0);
} else {
unsigned int mem_mix = (s.dispatch_key + s.r1 * 7 + s.r2 * 13 + i * 5) ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK();
local_idx_for_handler = (mem_mix % HANDLER_COUNT);
mem_table[local_idx_for_handler](s, argc, argv);
}
} else if (dispatcher_type == 2) {
local_idx_for_handler = mixed_dispatch_idx(s);
if (OBF_OPAQUE_PREDICATE_TRUE_1()) {
handler_table_raw[local_idx_for_handler](s, argc, argv);
} else {
K8_ASSUME(0);
mem_table[(local_idx_for_handler + 5) % HANDLER_COUNT](s, argc, argv);
}
} else {
local_idx_for_handler = ((s.pc ^ s.r0 ^ (unsigned int)OBF_CALL_ANY_LOCAL_JUNK() ^ s.dispatch_key) % HANDLER_COUNT);
if (OBF_OPAQUE_PREDICATE_TRUE_2(s.r1 ^ s.r2)) {
mem_table[local_idx_for_handler](s, argc, argv);
} else {
handler_table_raw[(local_idx_for_handler + 3) % HANDLER_COUNT](s, argc, argv);
}
}
OBF_CALL_ANY_LOCAL_JUNK();
OBF_SET_NEXT_STATE_SKEW_4(DispatchBlockID::MAYBE_CALL_EXTRA_JUNK, next_block_id_for_switch);
break;
}
case DispatchBlockID::MAYBE_CALL_EXTRA_JUNK:
if ((i & 2) && OBF_OPAQUE_PREDICATE_TRUE_2(s.r0 ^ s.dispatch_key)) {
OBF_SET_NEXT_STATE_MERGED_COND_SKEW_TRUE(
DispatchBlockID::EXECUTE_EXTRA_JUNK,
DispatchBlockID::DETERMINE_PC_UPDATE_PATH,
next_block_id_for_switch
);
} else {
OBF_SET_NEXT_STATE_SKEW_5(DispatchBlockID::DETERMINE_PC_UPDATE_PATH, next_block_id_for_switch);
}
break;
case DispatchBlockID::EXECUTE_EXTRA_JUNK:
OBF_CALL_ANY_LOCAL_JUNK();
_obf_global_opaque_seed = OBF_MBA_XOR(_obf_global_opaque_seed, (int)__TIME__[1] ^ (int)i ^ (int)OBF_CALL_ANY_LOCAL_JUNK());
OBF_SET_NEXT_STATE_SKEW_6(DispatchBlockID::DETERMINE_PC_UPDATE_PATH, next_block_id_for_switch);
break;
case DispatchBlockID::DETERMINE_PC_UPDATE_PATH:
if (((i & 1) == 0)) {
OBF_SET_NEXT_STATE_SKEW_7(DispatchBlockID::EXECUTE_PC_UPDATE_PATH_A, next_block_id_for_switch);
} else {
OBF_SET_NEXT_STATE_SKEW_8(DispatchBlockID::EXECUTE_PC_UPDATE_PATH_B, next_block_id_for_switch);
}
break;
case DispatchBlockID::EXECUTE_PC_UPDATE_PATH_A:
s.pc = (s.pc + mixed_dispatch_idx(s) + (unsigned int)OBF_CALL_ANY_LOCAL_JUNK()) % HANDLER_COUNT;
OBF_SET_NEXT_STATE_SKEW_9(DispatchBlockID::INCREMENT_MAIN_LOOP_COUNTER, next_block_id_for_switch);
break;
case DispatchBlockID::EXECUTE_PC_UPDATE_PATH_B:
s.pc = (s.pc + reg_dispatch_idx(s)) % HANDLER_COUNT;
OBF_SET_NEXT_STATE_SKEW_10(DispatchBlockID::INCREMENT_MAIN_LOOP_COUNTER, next_block_id_for_switch);
break;