714 lines
18 KiB
C++
714 lines
18 KiB
C++
#include <std_include.hpp>
|
|
#include "loader/component_loader.hpp"
|
|
|
|
#include "game/game.hpp"
|
|
|
|
#include "component/game_module.hpp"
|
|
#include "component/scheduler.hpp"
|
|
|
|
#include <utils/hook.hpp>
|
|
#include <utils/string.hpp>
|
|
|
|
#include "integrity.hpp"
|
|
#include "breakpoints.hpp"
|
|
#include "illegal_instructions.hpp"
|
|
|
|
#ifdef DEBUG
|
|
//#define PATCH_BREAKPOINTS
|
|
#endif
|
|
|
|
#define PRECOMPUTED_INTEGRITY_CHECKS
|
|
#define PRECOMPUTED_BREAKPOINTS
|
|
#define PRECOMPUTED_ILLEGAL_INSTRUCTIONS
|
|
|
|
#define ProcessDebugPort 7
|
|
#define ProcessDebugObjectHandle 30
|
|
#define ProcessDebugFlags 31
|
|
|
|
namespace arxan
|
|
{
|
|
std::mutex arxan_mutex;
|
|
|
|
namespace integrity
|
|
{
|
|
const std::vector<std::pair<uint8_t*, size_t>>& get_text_sections()
|
|
{
|
|
static const std::vector<std::pair<uint8_t*, size_t>> text = []
|
|
{
|
|
std::vector<std::pair<uint8_t*, size_t>> texts{};
|
|
|
|
const utils::nt::library game{ game_module::get_game_module() };
|
|
for (const auto& section : game.get_section_headers())
|
|
{
|
|
if (section->Characteristics & IMAGE_SCN_MEM_EXECUTE)
|
|
{
|
|
texts.emplace_back(game.get_ptr() + section->VirtualAddress, section->Misc.VirtualSize);
|
|
}
|
|
}
|
|
|
|
return texts;
|
|
}();
|
|
|
|
return text;
|
|
}
|
|
|
|
bool is_in_texts(const uint64_t addr)
|
|
{
|
|
const auto& texts = get_text_sections();
|
|
for (const auto& text : texts)
|
|
{
|
|
const auto start = reinterpret_cast<ULONG_PTR>(text.first);
|
|
if (addr >= start && addr <= (start + text.second))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool is_in_texts(const void* addr)
|
|
{
|
|
return is_in_texts(reinterpret_cast<uint64_t>(addr));
|
|
}
|
|
|
|
struct integrity_handler_context
|
|
{
|
|
uint32_t* computed_checksum;
|
|
uint32_t* original_checksum;
|
|
};
|
|
|
|
bool is_on_stack(uint8_t* stack_frame, const void* pointer)
|
|
{
|
|
const auto stack_value = reinterpret_cast<uint64_t>(stack_frame);
|
|
const auto pointer_value = reinterpret_cast<uint64_t>(pointer);
|
|
|
|
const auto diff = static_cast<int64_t>(stack_value - pointer_value);
|
|
return std::abs(diff) < 0x1000;
|
|
}
|
|
|
|
// Pretty trashy, but working, heuristic to search the integrity handler context
|
|
bool is_handler_context(uint8_t* stack_frame, const uint32_t computed_checksum, const uint32_t frame_offset)
|
|
{
|
|
const auto* potential_context = reinterpret_cast<integrity_handler_context*>(stack_frame + frame_offset);
|
|
return is_on_stack(stack_frame, potential_context->computed_checksum)
|
|
&& *potential_context->computed_checksum == computed_checksum
|
|
&& is_in_texts(potential_context->original_checksum);
|
|
}
|
|
|
|
integrity_handler_context* search_handler_context(uint8_t* stack_frame, const uint32_t computed_checksum)
|
|
{
|
|
for (uint32_t frame_offset = 0; frame_offset < 0x90; frame_offset += 8)
|
|
{
|
|
if (is_handler_context(stack_frame, computed_checksum, frame_offset))
|
|
{
|
|
return reinterpret_cast<integrity_handler_context*>(stack_frame + frame_offset);
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
uint32_t adjust_integrity_checksum(const uint64_t return_address, uint8_t* stack_frame,
|
|
const uint32_t current_checksum)
|
|
{
|
|
[[maybe_unused]] const auto handler_address = return_address - 5;
|
|
const auto* context = search_handler_context(stack_frame, current_checksum);
|
|
|
|
if (!context)
|
|
{
|
|
OutputDebugStringA(utils::string::va("Unable to find frame offset for: %llX", return_address));
|
|
return current_checksum;
|
|
}
|
|
|
|
const auto correct_checksum = *context->original_checksum;
|
|
*context->computed_checksum = correct_checksum;
|
|
|
|
if (current_checksum != correct_checksum)
|
|
{
|
|
#ifdef DEV_BUILD
|
|
OutputDebugStringA(utils::string::va("Adjusting checksum (%llX): %X -> %X", handler_address,
|
|
current_checksum, correct_checksum));
|
|
#endif
|
|
}
|
|
|
|
return correct_checksum;
|
|
}
|
|
|
|
void patch_intact_basic_block_integrity_check(void* address)
|
|
{
|
|
const auto game_address = reinterpret_cast<uint64_t>(address);
|
|
constexpr auto inst_len = 3;
|
|
|
|
const auto next_inst_addr = game_address + inst_len;
|
|
const auto next_inst = *reinterpret_cast<uint32_t*>(next_inst_addr);
|
|
|
|
if ((next_inst & 0xFF00FFFF) != 0xFF004583)
|
|
{
|
|
throw std::runtime_error(utils::string::va("Unable to patch intact basic block: %llX", game_address));
|
|
}
|
|
|
|
const auto other_frame_offset = static_cast<uint8_t>(next_inst >> 16);
|
|
static const auto stub = utils::hook::assemble([](utils::hook::assembler& a)
|
|
{
|
|
a.push(rax);
|
|
|
|
a.mov(rax, qword_ptr(rsp, 8));
|
|
a.sub(rax, 2); // Skip the push we inserted
|
|
|
|
a.push(rax);
|
|
a.pushad64();
|
|
|
|
a.mov(r8, qword_ptr(rsp, 0x88));
|
|
a.mov(rcx, rax);
|
|
a.mov(rdx, rbp);
|
|
a.call_aligned(adjust_integrity_checksum);
|
|
|
|
a.mov(qword_ptr(rsp, 0x80), rax);
|
|
|
|
a.popad64();
|
|
a.pop(rax);
|
|
|
|
a.add(rsp, 8);
|
|
|
|
a.mov(dword_ptr(rdx, rcx, 4), eax);
|
|
|
|
a.pop(rax); // return addr
|
|
a.xchg(rax, qword_ptr(rsp)); // switch with push
|
|
|
|
a.add(dword_ptr(rbp, rax), 0xFFFFFFFF);
|
|
|
|
a.mov(rax, dword_ptr(rdx, rcx, 4)); // restore rax
|
|
|
|
a.ret();
|
|
});
|
|
|
|
// push other_frame_offset
|
|
utils::hook::set<uint16_t>(game_address, static_cast<uint16_t>(0x6A | (other_frame_offset << 8)));
|
|
utils::hook::call(game_address + 2, stub);
|
|
}
|
|
|
|
void patch_split_basic_block_integrity_check(void* address)
|
|
{
|
|
const auto game_address = reinterpret_cast<uint64_t>(address);
|
|
constexpr auto inst_len = 3;
|
|
|
|
const auto next_inst_addr = game_address + inst_len;
|
|
|
|
if (*reinterpret_cast<uint8_t*>(next_inst_addr) != 0xE9)
|
|
{
|
|
throw std::runtime_error(utils::string::va("Unable to patch split basic block: %llX", game_address));
|
|
}
|
|
|
|
const auto jump_target = utils::hook::extract<void*>(reinterpret_cast<void*>(next_inst_addr + 1));
|
|
const auto stub = utils::hook::assemble([jump_target](utils::hook::assembler& a)
|
|
{
|
|
a.push(rax);
|
|
|
|
a.mov(rax, qword_ptr(rsp, 8));
|
|
a.push(rax);
|
|
|
|
a.pushad64();
|
|
|
|
a.mov(r8, qword_ptr(rsp, 0x88));
|
|
a.mov(rcx, rax);
|
|
a.mov(rdx, rbp);
|
|
a.call_aligned(adjust_integrity_checksum);
|
|
|
|
a.mov(qword_ptr(rsp, 0x80), rax);
|
|
|
|
a.popad64();
|
|
a.pop(rax);
|
|
|
|
a.add(rsp, 8);
|
|
|
|
a.mov(dword_ptr(rdx, rcx, 4), eax);
|
|
|
|
a.add(rsp, 8);
|
|
|
|
a.jmp(jump_target);
|
|
});
|
|
|
|
utils::hook::call(game_address, stub);
|
|
}
|
|
|
|
#ifdef PRECOMPUTED_INTEGRITY_CHECKS
|
|
void search_and_patch_integrity_checks_precomputed()
|
|
{
|
|
for (const auto i : intact_integrity_check_blocks)
|
|
{
|
|
patch_intact_basic_block_integrity_check(reinterpret_cast<void*>(i));
|
|
}
|
|
|
|
for (const auto i : split_integrity_check_blocks)
|
|
{
|
|
patch_split_basic_block_integrity_check(reinterpret_cast<void*>(i));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void search_and_patch_integrity_checks()
|
|
{
|
|
#ifdef PRECOMPUTED_INTEGRITY_CHECKS
|
|
assert(game::base_address == 0x140000000);
|
|
search_and_patch_integrity_checks_precomputed();
|
|
#else
|
|
const auto intact_results = "89 04 8A 83 45 ? FF"_sig;
|
|
const auto split_results = "89 04 8A E9"_sig;
|
|
|
|
for (auto* i : intact_results)
|
|
{
|
|
patch_intact_basic_block_integrity_check(i);
|
|
}
|
|
|
|
for (auto* i : split_results)
|
|
{
|
|
patch_split_basic_block_integrity_check(i);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
using namespace integrity;
|
|
|
|
namespace anti_debug
|
|
{
|
|
utils::hook::detour nt_close_hook;
|
|
utils::hook::detour nt_query_information_process_hook;
|
|
|
|
NTSTATUS WINAPI nt_query_information_process_stub(const HANDLE handle, const PROCESSINFOCLASS info_class,
|
|
const PVOID info,
|
|
const ULONG info_length, const PULONG ret_length)
|
|
{
|
|
auto* orig = static_cast<decltype(NtQueryInformationProcess)*>(nt_query_information_process_hook.get_original());
|
|
auto status = orig(handle, info_class, info, info_length, ret_length);
|
|
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
if (info_class == ProcessDebugObjectHandle)
|
|
{
|
|
*static_cast<HANDLE*>(info) = nullptr;
|
|
return static_cast<LONG>(0xC0000353);
|
|
}
|
|
else if (info_class == ProcessDebugPort)
|
|
{
|
|
*static_cast<HANDLE*>(info) = nullptr;
|
|
}
|
|
else if (info_class == ProcessDebugFlags)
|
|
{
|
|
*static_cast<ULONG*>(info) = 1;
|
|
}
|
|
}
|
|
|
|
return status;
|
|
}
|
|
|
|
NTSTATUS NTAPI nt_close_stub(const HANDLE handle)
|
|
{
|
|
char info[16];
|
|
if (NtQueryObject(handle, OBJECT_INFORMATION_CLASS(4), &info, 2, nullptr) >= 0 && size_t(handle) != 0x12345)
|
|
{
|
|
auto* orig = static_cast<decltype(NtClose)*>(nt_close_hook.get_original());
|
|
return orig(handle);
|
|
}
|
|
|
|
return STATUS_INVALID_HANDLE;
|
|
}
|
|
|
|
void hide_being_debugged()
|
|
{
|
|
auto* const peb = PPEB(__readgsqword(0x60));
|
|
peb->BeingDebugged = false;
|
|
*reinterpret_cast<PDWORD>(LPSTR(peb) + 0xBC) &= ~0x70; // NtGlobalFlag
|
|
}
|
|
|
|
void remove_hardware_breakpoints()
|
|
{
|
|
CONTEXT context;
|
|
ZeroMemory(&context, sizeof(context));
|
|
context.ContextFlags = CONTEXT_DEBUG_REGISTERS;
|
|
|
|
auto* const thread = GetCurrentThread();
|
|
GetThreadContext(thread, &context);
|
|
|
|
context.Dr0 = 0;
|
|
context.Dr1 = 0;
|
|
context.Dr2 = 0;
|
|
context.Dr3 = 0;
|
|
context.Dr6 = 0;
|
|
context.Dr7 = 0;
|
|
|
|
SetThreadContext(thread, &context);
|
|
}
|
|
|
|
LONG WINAPI exception_filter(const LPEXCEPTION_POINTERS info)
|
|
{
|
|
if (info->ExceptionRecord->ExceptionCode == STATUS_INVALID_HANDLE)
|
|
{
|
|
return EXCEPTION_CONTINUE_EXECUTION;
|
|
}
|
|
|
|
return EXCEPTION_CONTINUE_SEARCH;
|
|
}
|
|
|
|
BOOL WINAPI set_thread_context_stub(const HANDLE thread, CONTEXT* context)
|
|
{
|
|
if (context->ContextFlags == CONTEXT_DEBUG_REGISTERS)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
return SetThreadContext(thread, context);
|
|
}
|
|
|
|
enum dbg_funcs_e
|
|
{
|
|
DbgBreakPoint,
|
|
DbgUserBreakPoint,
|
|
DbgUiConnectToDbg,
|
|
DbgUiContinue,
|
|
DbgUiConvertStateChangeStructure,
|
|
DbgUiDebugActiveProcess,
|
|
DbgUiGetThreadDebugObject,
|
|
DbgUiIssueRemoteBreakin,
|
|
DbgUiRemoteBreakin,
|
|
DbgUiSetThreadDebugObject,
|
|
DbgUiStopDebugging,
|
|
DbgUiWaitStateChange,
|
|
DbgPrintReturnControlC,
|
|
DbgPrompt,
|
|
DBG_FUNCS_COUNT,
|
|
};
|
|
const char* dbg_funcs_names[] =
|
|
{
|
|
"DbgBreakPoint",
|
|
"DbgUserBreakPoint",
|
|
"DbgUiConnectToDbg",
|
|
"DbgUiContinue",
|
|
"DbgUiConvertStateChangeStructure",
|
|
"DbgUiDebugActiveProcess",
|
|
"DbgUiGetThreadDebugObject",
|
|
"DbgUiIssueRemoteBreakin",
|
|
"DbgUiRemoteBreakin",
|
|
"DbgUiSetThreadDebugObject",
|
|
"DbgUiStopDebugging",
|
|
"DbgUiWaitStateChange",
|
|
"DbgPrintReturnControlC",
|
|
"DbgPrompt",
|
|
};
|
|
struct dbg_func_bytes_s
|
|
{
|
|
std::uint8_t buffer[15];
|
|
};
|
|
dbg_func_bytes_s dbg_func_bytes[DBG_FUNCS_COUNT];
|
|
void* dbg_func_procs[DBG_FUNCS_COUNT]{};
|
|
|
|
void store_debug_functions()
|
|
{
|
|
const utils::nt::library ntdll("ntdll.dll");
|
|
|
|
for (auto i = 0; i < DBG_FUNCS_COUNT; i++)
|
|
{
|
|
dbg_func_procs[i] = ntdll.get_proc<void*>(dbg_funcs_names[i]);
|
|
memcpy(dbg_func_bytes[i].buffer, dbg_func_procs[i], sizeof(dbg_func_bytes[i].buffer));
|
|
}
|
|
}
|
|
|
|
void restore_debug_functions()
|
|
{
|
|
for (auto i = 0; i < DBG_FUNCS_COUNT; i++)
|
|
{
|
|
utils::hook::copy(dbg_func_procs[i], dbg_func_bytes[i].buffer, sizeof(dbg_func_bytes[i].buffer));
|
|
}
|
|
}
|
|
|
|
namespace exceptions
|
|
{
|
|
std::unordered_map<PVOID, void*> handle_handler;
|
|
|
|
void fake_exception(void* address, _CONTEXT* fake_context, DWORD exception)
|
|
{
|
|
_EXCEPTION_POINTERS fake_info{};
|
|
_EXCEPTION_RECORD fake_record{};
|
|
fake_info.ExceptionRecord = &fake_record;
|
|
fake_info.ContextRecord = fake_context;
|
|
|
|
fake_record.ExceptionAddress = reinterpret_cast<void*>(reinterpret_cast<std::uint64_t>(address) + 3);
|
|
fake_record.ExceptionCode = exception;
|
|
|
|
for (auto handler : handle_handler)
|
|
{
|
|
if (handler.second)
|
|
{
|
|
auto result = utils::hook::invoke<LONG>(handler.second, &fake_info);
|
|
if (result)
|
|
{
|
|
memset(fake_context, 0, sizeof(_CONTEXT));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void patch_int2d_trap(void* address)
|
|
{
|
|
const auto game_address = reinterpret_cast<std::uint64_t>(address);
|
|
|
|
const auto jump_target = utils::hook::extract<void*>(reinterpret_cast<void*>(game_address + 3));
|
|
|
|
_CONTEXT* fake_context = new _CONTEXT{};
|
|
const auto stub = utils::hook::assemble([address, jump_target, fake_context](utils::hook::assembler& a)
|
|
{
|
|
a.push(rcx);
|
|
a.mov(rcx, fake_context);
|
|
a.call_aligned(RtlCaptureContext);
|
|
a.pop(rcx);
|
|
|
|
a.pushad64();
|
|
a.mov(rcx, address);
|
|
a.mov(rdx, fake_context);
|
|
a.mov(r8, EXCEPTION_BREAKPOINT);
|
|
a.call_aligned(fake_exception);
|
|
a.popad64();
|
|
|
|
a.jmp(jump_target);
|
|
});
|
|
|
|
utils::hook::nop(game_address, 7);
|
|
utils::hook::jump(game_address, stub, false);
|
|
}
|
|
|
|
#ifdef PATCH_BREAKPOINTS
|
|
#ifdef PRECOMPUTED_BREAKPOINTS
|
|
void patch_breakpoints_precomputed()
|
|
{
|
|
for (const auto i : int2d_breakpoint_addresses)
|
|
{
|
|
patch_int2d_trap(reinterpret_cast<void*>(i));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void patch_breakpoints()
|
|
{
|
|
static bool once = false;
|
|
if (once)
|
|
{
|
|
return;
|
|
}
|
|
once = true;
|
|
|
|
#ifdef PRECOMPUTED_BREAKPOINTS
|
|
assert(game::base_address == 0x140000000);
|
|
patch_breakpoints_precomputed();
|
|
#else
|
|
const auto int2d_results = utils::hook::signature("CD 2D E9 ? ? ? ?", game_module::get_game_module()).process();
|
|
for (auto* i : int2d_results)
|
|
{
|
|
patch_int2d_trap(i);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void patch_illegal_instruction_intact(void* address)
|
|
{
|
|
const auto game_address = reinterpret_cast<std::uint64_t>(address);
|
|
|
|
const auto jump_target = game_address + 6;
|
|
|
|
const auto a1 = *reinterpret_cast<std::uint8_t*>(game_address + 3);
|
|
|
|
_CONTEXT* fake_context = new _CONTEXT{};
|
|
const auto stub = utils::hook::assemble([address, jump_target, fake_context, a1](utils::hook::assembler& a)
|
|
{
|
|
a.lea(rax, ptr(rbp, a1));
|
|
|
|
a.push(rcx);
|
|
a.mov(rcx, fake_context);
|
|
a.call_aligned(RtlCaptureContext);
|
|
a.pop(rcx);
|
|
|
|
a.pushad64();
|
|
a.mov(rcx, address);
|
|
a.mov(rdx, fake_context);
|
|
a.mov(r8, EXCEPTION_ILLEGAL_INSTRUCTION);
|
|
a.call_aligned(fake_exception);
|
|
a.popad64();
|
|
|
|
a.jmp(jump_target);
|
|
});
|
|
|
|
utils::hook::nop(game_address, 6);
|
|
utils::hook::jump(game_address, stub, false);
|
|
}
|
|
|
|
void patch_illegal_instruction_split(void* address)
|
|
{
|
|
const auto game_address = reinterpret_cast<std::uint64_t>(address);
|
|
|
|
const auto jump_target = utils::hook::extract<void*>(reinterpret_cast<void*>(game_address + 5));
|
|
|
|
if (*reinterpret_cast<std::uint16_t*>(jump_target) != 0x0B0F) // illegal instruction
|
|
{
|
|
return; // false positive
|
|
}
|
|
|
|
const auto a1 = *reinterpret_cast<std::uint8_t*>(game_address + 3);
|
|
|
|
_CONTEXT* fake_context = new _CONTEXT{};
|
|
const auto stub = utils::hook::assemble([address, jump_target, fake_context, a1](utils::hook::assembler& a)
|
|
{
|
|
a.lea(rax, ptr(rbp, a1));
|
|
|
|
a.push(rcx);
|
|
a.mov(rcx, fake_context);
|
|
a.call_aligned(RtlCaptureContext);
|
|
a.pop(rcx);
|
|
|
|
a.pushad64();
|
|
a.mov(rcx, address);
|
|
a.mov(rdx, fake_context);
|
|
a.mov(r8, EXCEPTION_ILLEGAL_INSTRUCTION);
|
|
a.call_aligned(fake_exception);
|
|
a.popad64();
|
|
|
|
a.jmp(jump_target);
|
|
});
|
|
|
|
utils::hook::nop(game_address, 9);
|
|
utils::hook::nop(jump_target, 2);
|
|
utils::hook::jump(game_address, stub, false);
|
|
}
|
|
|
|
#ifdef PRECOMPUTED_ILLEGAL_INSTRUCTIONS
|
|
void patch_illegal_instructions_precomputed()
|
|
{
|
|
for (const auto i : illegal_instructions_intact)
|
|
{
|
|
patch_illegal_instruction_intact(reinterpret_cast<void*>(i));
|
|
}
|
|
|
|
for (const auto i : illegal_instructions_split)
|
|
{
|
|
patch_illegal_instruction_split(reinterpret_cast<void*>(i));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void patch_illegal_instructions()
|
|
{
|
|
static bool once = false;
|
|
if (once)
|
|
{
|
|
return;
|
|
}
|
|
once = true;
|
|
|
|
#ifdef PRECOMPUTED_ILLEGAL_INSTRUCTIONS
|
|
assert(game::base_address == 0x140000000);
|
|
patch_illegal_instructions_precomputed();
|
|
#else
|
|
const auto intact_results = utils::hook::signature("48 8D 45 ? 0F 0B", game_module::get_game_module()).process();
|
|
for (auto* i : intact_results)
|
|
{
|
|
patch_illegal_instruction_intact(i);
|
|
}
|
|
|
|
const auto split_results = utils::hook::signature("48 8D 45 ? E9 ? ? ?", game_module::get_game_module()).process();
|
|
for (auto* i : split_results)
|
|
{
|
|
patch_illegal_instruction_split(i);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
PVOID WINAPI add_vectored_exception_handler_stub(ULONG first, PVECTORED_EXCEPTION_HANDLER handler)
|
|
{
|
|
exceptions::patch_breakpoints();
|
|
exceptions::patch_illegal_instructions();
|
|
|
|
auto handle = AddVectoredExceptionHandler(first, handler);
|
|
handle_handler[handle] = handler;
|
|
|
|
return handle;
|
|
}
|
|
|
|
ULONG WINAPI remove_vectored_exception_handler_stub(PVOID handle)
|
|
{
|
|
handle_handler[handle] = nullptr;
|
|
return RemoveVectoredExceptionHandler(handle);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
using namespace anti_debug;
|
|
|
|
class component final : public component_interface
|
|
{
|
|
public:
|
|
void* load_import(const std::string& library, const std::string& function) override
|
|
{
|
|
if (function == "SetThreadContext")
|
|
{
|
|
return set_thread_context_stub;
|
|
}
|
|
|
|
#ifdef PATCH_BREAKPOINTS
|
|
if (!utils::nt::is_wine())
|
|
{
|
|
if (function == "AddVectoredExceptionHandler")
|
|
{
|
|
return exceptions::add_vectored_exception_handler_stub;
|
|
}
|
|
else if (function == "RemoveVectoredExceptionHandler")
|
|
{
|
|
return exceptions::remove_vectored_exception_handler_stub;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
void post_load() override
|
|
{
|
|
const std::lock_guard<std::mutex> lock(arxan_mutex);
|
|
|
|
remove_hardware_breakpoints();
|
|
hide_being_debugged();
|
|
scheduler::loop(hide_being_debugged, scheduler::pipeline::async);
|
|
if (!utils::nt::is_wine())
|
|
{
|
|
store_debug_functions();
|
|
}
|
|
|
|
const utils::nt::library ntdll("ntdll.dll");
|
|
nt_close_hook.create(ntdll.get_proc<void*>("NtClose"), nt_close_stub);
|
|
|
|
const auto nt_query_information_process = ntdll.get_proc<void*>("NtQueryInformationProcess");
|
|
nt_query_information_process_hook.create(nt_query_information_process, nt_query_information_process_stub);
|
|
nt_query_information_process_hook.move();
|
|
|
|
AddVectoredExceptionHandler(1, exception_filter);
|
|
}
|
|
|
|
void post_unpack() override
|
|
{
|
|
const std::lock_guard<std::mutex> lock(arxan_mutex);
|
|
|
|
remove_hardware_breakpoints();
|
|
search_and_patch_integrity_checks();
|
|
if (!utils::nt::is_wine())
|
|
{
|
|
restore_debug_functions();
|
|
}
|
|
}
|
|
|
|
component_priority priority() override
|
|
{
|
|
return component_priority::arxan;
|
|
}
|
|
};
|
|
}
|
|
|
|
REGISTER_COMPONENT(arxan::component)
|