Lightemerald/windows-user-space-emulator
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Ignore certain function calls

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This commit is contained in:
Maurice Heumann
2025-04-07 15:17:52 +02:00
parent 7f3c5d080c
commit f087d3998a
3 changed files with 17 additions and 3 deletions
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11
src/analyzer/main.cpp
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@@ -22,6 +22,7 @@ namespace
std::string registry_path{"./registry"};
std::string emulation_root{};
std::set<std::string, std::less<>> modules{};
std::set<std::string, std::less<>> ignored_functions{};
std::unordered_map<windows_path, std::filesystem::path> path_mappings{};
};
@@ -172,6 +173,7 @@ namespace
.silent_until_main = options.concise_logging,
.path_mappings = options.path_mappings,
.modules = options.modules,
.ignored_functions = options.ignored_functions,
};
}
@@ -353,6 +355,15 @@ namespace
arg_it = args.erase(arg_it);
options.dump = args[0];
}
else if (arg == "-i")
{
if (args.size() < 2)
{
throw std::runtime_error("No ignored function provided after -i");
}
arg_it = args.erase(arg_it);
options.ignored_functions.emplace(args[0]);
}
else if (arg == "-p")
{
if (args.size() < 3)

7
src/windows-emulator/windows_emulator.cpp
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@@ -241,7 +241,9 @@ windows_emulator::windows_emulator(const emulator_settings& settings, emulator_c
memory(*this->emu_),
registry(emulation_root.empty() ? settings.registry_directory : emulation_root / "registry"),
mod_manager(memory, file_sys, this->callbacks),
process(*this->emu_, memory, *this->clock_, this->callbacks)
process(*this->emu_, memory, *this->clock_, this->callbacks),
modules_(settings.modules),
ignored_functions_(settings.ignored_functions)
{
#ifndef OS_WINDOWS
if (this->emulation_root.empty())
@@ -264,7 +266,6 @@ windows_emulator::windows_emulator(const emulator_settings& settings, emulator_c
this->silent_until_main_ = settings.silent_until_main && !settings.disable_logging;
this->use_relative_time_ = settings.use_relative_time;
this->log.disable_output(settings.disable_logging || this->silent_until_main_);
this->modules_ = settings.modules;
this->setup_hooks();
}
@@ -393,7 +394,7 @@ void windows_emulator::on_instruction_execution(const uint64_t address)
if (binary)
{
const auto export_entry = binary->address_names.find(address);
if (export_entry != binary->address_names.end())
if (export_entry != binary->address_names.end() && !this->ignored_functions_.contains(export_entry->second))
{
const auto rsp = this->emu().read_stack_pointer();

2
src/windows-emulator/windows_emulator.hpp
View File

@@ -44,6 +44,7 @@ struct emulator_settings
std::unordered_map<uint16_t, uint16_t> port_mappings{};
std::unordered_map<windows_path, std::filesystem::path> path_mappings{};
std::set<std::string, std::less<>> modules{};
std::set<std::string, std::less<>> ignored_functions{};
};
struct emulator_interfaces
@@ -194,6 +195,7 @@ class windows_emulator
std::unordered_map<uint16_t, uint16_t> port_mappings_{};
std::set<std::string, std::less<>> modules_{};
std::set<std::string, std::less<>> ignored_functions_{};
std::vector<std::byte> process_snapshot_{};
// std::optional<process_context> process_snapshot_{};