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Allow placing hardware breakpoints

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This commit is contained in:
momo5502 2022-09-11 08:25:17 +02:00
parent 53a7133b75
commit 038ab2a4bb
1 changed files with 26 additions and 1 deletions
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27
src/client/component/arxan.cpp
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@ -25,6 +25,7 @@ namespace arxan
utils::hook::detour create_mutex_ex_a_hook; utils::hook::detour create_mutex_ex_a_hook;
utils::hook::detour open_process_hook; utils::hook::detour open_process_hook;
utils::hook::detour create_thread_hook; utils::hook::detour create_thread_hook;
utils::hook::detour get_thread_context_hook;
void* original_first_tls_callback = nullptr; void* original_first_tls_callback = nullptr;
@ -37,7 +38,7 @@ namespace arxan
return nullptr; return nullptr;
} }
const auto* tls_dir = reinterpret_cast<IMAGE_TLS_DIRECTORY*>(game.get_ptr() + entry.VirtualAddress); const auto* tls_dir = reinterpret_cast<IMAGE_TLS_DIRECTORY*>(game.get_ptr() + entry.VirtualAddress);
return reinterpret_cast<void**>(tls_dir->AddressOfCallBacks); return reinterpret_cast<void**>(tls_dir->AddressOfCallBacks);
} }
@ -515,6 +516,24 @@ namespace arxan
return GetSystemMetrics(index); return GetSystemMetrics(index);
} }
BOOL WINAPI get_thread_context_stub(const HANDLE thread_handle, const LPCONTEXT context)
{
constexpr auto debug_registers_flag = (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_AMD64);
if (context->ContextFlags & debug_registers_flag)
{
auto* source = _ReturnAddress();
const auto game = utils::nt::library{};
const auto source_module = utils::nt::library::get_by_address(source);
if (source_module == game)
{
context->ContextFlags &= ~debug_registers_flag;
}
}
return get_thread_context_hook.invoke<BOOL>(thread_handle, context);
}
uint64_t get_integrity_data_qword(const uint8_t* address) uint64_t get_integrity_data_qword(const uint8_t* address)
{ {
OutputDebugStringA(utils::string::va("8 bytes -> %p", address)); OutputDebugStringA(utils::string::va("8 bytes -> %p", address));
@ -838,6 +857,11 @@ namespace arxan
open_process_hook.create(OpenProcess, open_process_stub); open_process_hook.create(OpenProcess, open_process_stub);
#ifndef NDEBUG
auto* get_thread_context_func = utils::nt::library("kernelbase.dll").get_proc<void*>("GetThreadContext");
get_thread_context_hook.create(get_thread_context_func, get_thread_context_stub);
#endif
utils::hook::copy(this->window_text_buffer_, GetWindowTextA, sizeof(this->window_text_buffer_)); utils::hook::copy(this->window_text_buffer_, GetWindowTextA, sizeof(this->window_text_buffer_));
utils::hook::jump(GetWindowTextA, get_window_text_a_stub, true, true); utils::hook::jump(GetWindowTextA, get_window_text_a_stub, true, true);
utils::hook::move_hook(GetWindowTextA); utils::hook::move_hook(GetWindowTextA);
@ -878,6 +902,7 @@ namespace arxan
create_mutex_ex_a_hook.clear(); create_mutex_ex_a_hook.clear();
create_thread_hook.clear(); create_thread_hook.clear();
open_process_hook.clear(); open_process_hook.clear();
get_thread_context_hook.clear();
} }
int priority() override int priority() override