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Support SGDT hooking

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momo5502
2025-08-18 15:33:32 +02:00
parent acf28467c5
commit 10cd7868ac
7 changed files with 46 additions and 8 deletions
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2
src/backends/icicle-emulator/icicle_x86_64_emulator.cpp
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@@ -266,7 +266,7 @@ namespace icicle
const auto invoker = +[](void* cb) {
const auto& func = *static_cast<decltype(ptr)>(cb);
(void)func(); //
(void)func(0); //
};
const auto id = icicle_add_syscall_hook(this->emu_, invoker, ptr);

26
src/backends/unicorn-emulator/unicorn_x86_64_emulator.cpp
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@@ -32,6 +32,8 @@ namespace unicorn
return UC_X86_INS_RDTSC;
case x86_hookable_instructions::rdtscp:
return UC_X86_INS_RDTSCP;
case x86_hookable_instructions::sgdt:
return UC_X86_INS_SGDT;
default:
throw std::runtime_error("Bad instruction for mapping");
}
@@ -376,8 +378,9 @@ namespace unicorn
if (inst_type == x86_hookable_instructions::invalid)
{
function_wrapper<int, uc_engine*> wrapper(
[c = std::move(callback)](uc_engine*) { return (c() == instruction_hook_continuation::skip_instruction) ? 1 : 0; });
function_wrapper<int, uc_engine*> wrapper([c = std::move(callback)](uc_engine*) {
return (c(0) == instruction_hook_continuation::skip_instruction) ? 1 : 0;
});
uce(uc_hook_add(*this, hook.make_reference(), UC_HOOK_INSN_INVALID, wrapper.get_function(), wrapper.get_user_data(), 0,
std::numeric_limits<pointer_type>::max()));
@@ -385,7 +388,19 @@ namespace unicorn
}
else if (inst_type == x86_hookable_instructions::syscall)
{
function_wrapper<void, uc_engine*> wrapper([c = std::move(callback)](uc_engine*) { c(); });
function_wrapper<void, uc_engine*> wrapper([c = std::move(callback)](uc_engine*) { (void)c(0); });
const auto uc_instruction = map_hookable_instruction(inst_type);
uce(uc_hook_add(*this, hook.make_reference(), UC_HOOK_INSN, wrapper.get_function(), wrapper.get_user_data(), 0,
std::numeric_limits<pointer_type>::max(), uc_instruction));
container->add(std::move(wrapper), std::move(hook));
}
else if (inst_type == x86_hookable_instructions::sgdt)
{
function_wrapper<int, uc_engine*, uint64_t> wrapper([c = std::move(callback)](uc_engine*, const uint64_t data) {
return (c(data) == instruction_hook_continuation::skip_instruction) ? 1 : 0;
});
const auto uc_instruction = map_hookable_instruction(inst_type);
uce(uc_hook_add(*this, hook.make_reference(), UC_HOOK_INSN, wrapper.get_function(), wrapper.get_user_data(), 0,
@@ -395,8 +410,9 @@ namespace unicorn
}
else
{
function_wrapper<int, uc_engine*> wrapper(
[c = std::move(callback)](uc_engine*) { return (c() == instruction_hook_continuation::skip_instruction) ? 1 : 0; });
function_wrapper<int, uc_engine*> wrapper([c = std::move(callback)](uc_engine*) {
return (c(0) == instruction_hook_continuation::skip_instruction) ? 1 : 0;
});
const auto uc_instruction = map_hookable_instruction(inst_type);
uce(uc_hook_add(*this, hook.make_reference(), UC_HOOK_INSN, wrapper.get_function(), wrapper.get_user_data(), 0,