260 lines
10 KiB
C++
260 lines
10 KiB
C++
#include "content/views/view_yara.hpp"
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#include <hex/api/content_registry.hpp>
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#include <hex/api/project_file_manager.hpp>
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#include <hex/helpers/fs.hpp>
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#include <toasts/toast_notification.hpp>
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#include <popups/popup_file_chooser.hpp>
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#include <filesystem>
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#include <wolv/io/fs.hpp>
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#include <wolv/literals.hpp>
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namespace hex::plugin::yara {
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using namespace wolv::literals;
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ViewYara::ViewYara() : View::Window("hex.yara_rules.view.yara.name", ICON_VS_BUG) {
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YaraRule::init();
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ContentRegistry::FileHandler::add({ ".yar", ".yara" }, [](const auto &path) {
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for (const auto &destPath : fs::getDefaultPaths(fs::ImHexPath::Yara)) {
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if (wolv::io::fs::copyFile(path, destPath / path.filename(), std::fs::copy_options::overwrite_existing)) {
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ui::ToastInfo::open("hex.yara_rules.view.yara.rule_added"_lang);
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return true;
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}
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}
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return false;
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});
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ProjectFile::registerPerProviderHandler({
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.basePath = "yara.json",
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.required = false,
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.load = [this](prv::Provider *provider, const std::fs::path &basePath, const Tar &tar) -> bool {
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auto fileContent = tar.readString(basePath);
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if (fileContent.empty())
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return true;
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auto data = nlohmann::json::parse(fileContent.begin(), fileContent.end());
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if (!data.contains("rules"))
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return false;
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auto &rules = data["rules"];
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if (!rules.is_array())
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return false;
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m_matchedRules.get(provider).clear();
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for (auto &rule : rules) {
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if (!rule.contains("name") || !rule.contains("path"))
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return false;
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auto &name = rule["name"];
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auto &path = rule["path"];
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if (!name.is_string() || !path.is_string())
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return false;
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m_rulePaths.get(provider).emplace_back(std::fs::path(name.get<std::string>()), std::fs::path(path.get<std::string>()));
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}
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return true;
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},
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.store = [this](prv::Provider *provider, const std::fs::path &basePath, const Tar &tar) -> bool {
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nlohmann::json data;
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data["rules"] = nlohmann::json::array();
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for (auto &[name, path] : m_rulePaths.get(provider)) {
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data["rules"].push_back({
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{ "name", wolv::util::toUTF8String(name) },
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{ "path", wolv::util::toUTF8String(path) }
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});
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}
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tar.writeString(basePath, data.dump(4));
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return true;
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}
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});
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}
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ViewYara::~ViewYara() {
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YaraRule::cleanup();
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}
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void ViewYara::drawContent() {
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ImGuiExt::Header("hex.yara_rules.view.yara.header.rules"_lang, true);
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if (ImGui::BeginListBox("##rules", ImVec2(-FLT_MIN, ImGui::GetTextLineHeightWithSpacing() * 5))) {
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for (u32 i = 0; i < m_rulePaths->size(); i++) {
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const bool selected = (*m_selectedRule == i);
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if (ImGui::Selectable(wolv::util::toUTF8String((*m_rulePaths)[i].first).c_str(), selected)) {
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*m_selectedRule = i;
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}
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}
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ImGui::EndListBox();
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}
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if (ImGuiExt::IconButton(ICON_VS_ADD, ImGui::GetStyleColorVec4(ImGuiCol_Text))) {
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const auto basePaths = fs::getDefaultPaths(fs::ImHexPath::Yara);
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std::vector<std::fs::path> paths;
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for (const auto &path : basePaths) {
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std::error_code error;
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for (const auto &entry : std::fs::recursive_directory_iterator(path, error)) {
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if (!entry.is_regular_file()) continue;
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if (entry.path().extension() != ".yara" && entry.path().extension() != ".yar") continue;
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paths.push_back(entry);
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}
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}
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ui::PopupFileChooser::open(basePaths, paths, std::vector<hex::fs::ItemFilter>{ { "Yara File", "yara" }, { "Yara File", "yar" } }, true,
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[&](const auto &path) {
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m_rulePaths->push_back({ path.filename(), path });
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});
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}
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ImGui::SameLine();
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if (ImGuiExt::IconButton(ICON_VS_REMOVE, ImGui::GetStyleColorVec4(ImGuiCol_Text))) {
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if (*m_selectedRule < m_rulePaths->size()) {
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m_rulePaths->erase(m_rulePaths->begin() + *m_selectedRule);
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m_selectedRule = std::min(*m_selectedRule, u32(m_rulePaths->size() - 1));
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}
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}
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ImGui::NewLine();
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if (ImGui::Button("hex.yara_rules.view.yara.match"_lang)) this->applyRules();
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if (m_matcherTask.isRunning()) {
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ImGui::SameLine();
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ImGuiExt::TextSpinner("hex.yara_rules.view.yara.matching"_lang);
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}
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ImGuiExt::Header("hex.yara_rules.view.yara.header.matches"_lang);
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auto matchesTableSize = ImGui::GetContentRegionAvail();
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matchesTableSize.y *= 3.75 / 5.0;
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matchesTableSize.y -= ImGui::GetTextLineHeightWithSpacing();
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if (ImGui::BeginTable("matches", 3, ImGuiTableFlags_Borders | ImGuiTableFlags_Resizable | ImGuiTableFlags_Sortable | ImGuiTableFlags_Reorderable | ImGuiTableFlags_RowBg | ImGuiTableFlags_ScrollY, matchesTableSize)) {
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ImGui::TableSetupScrollFreeze(0, 1);
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ImGui::TableSetupColumn("hex.yara_rules.view.yara.matches.variable"_lang, ImGuiTableColumnFlags_PreferSortAscending, 0, ImGui::GetID("variable"));
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ImGui::TableSetupColumn("hex.ui.common.address"_lang, ImGuiTableColumnFlags_PreferSortAscending, 0, ImGui::GetID("address"));
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ImGui::TableSetupColumn("hex.ui.common.size"_lang, ImGuiTableColumnFlags_PreferSortAscending, 0, ImGui::GetID("size"));
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ImGui::TableHeadersRow();
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if (!m_matcherTask.isRunning()) {
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for (const auto &rule : *m_matchedRules) {
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if (rule.matches.empty()) continue;
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ImGui::TableNextRow();
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ImGui::TableNextColumn();
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if (ImGui::TreeNode(rule.identifier.c_str())) {
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for (const auto &match : rule.matches) {
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ImGui::TableNextRow();
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ImGui::TableNextColumn();
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ImGui::TextUnformatted(match.variable.c_str());
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ImGui::TableNextColumn();
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ImGui::TextUnformatted(hex::format("0x{0:08X}", match.region.getStartAddress()).c_str());
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ImGui::TableNextColumn();
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ImGui::TextUnformatted(hex::format("0x{0:08X}", match.region.getSize()).c_str());
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}
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ImGui::TreePop();
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}
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}
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}
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ImGui::EndTable();
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}
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auto consoleSize = ImGui::GetContentRegionAvail();
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if (ImGui::BeginChild("##console", consoleSize, true, ImGuiWindowFlags_AlwaysVerticalScrollbar | ImGuiWindowFlags_HorizontalScrollbar)) {
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ImGuiListClipper clipper;
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clipper.Begin(m_consoleMessages->size());
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while (clipper.Step()) {
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for (int i = clipper.DisplayStart; i < clipper.DisplayEnd; i++) {
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const auto &message = m_consoleMessages->at(i);
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if (ImGui::Selectable(message.c_str()))
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ImGui::SetClipboardText(message.c_str());
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}
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}
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}
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ImGui::EndChild();
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}
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void ViewYara::clearResult() {
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for (const auto &id : *m_highlightingIds)
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ImHexApi::HexEditor::removeBackgroundHighlight(id);
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for (const auto &id : *m_tooltipIds)
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ImHexApi::HexEditor::removeTooltip(id);
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m_highlightingIds->clear();
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m_tooltipIds->clear();
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m_matchedRules->clear();
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m_consoleMessages->clear();
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}
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void ViewYara::applyRules() {
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this->clearResult();
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auto provider = ImHexApi::Provider::get();
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if (provider == nullptr)
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return;
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m_matcherTask = TaskManager::createTask("hex.yara_rules.view.yara.matching", 0, [this, provider](auto &task) {
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u32 progress = 0;
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std::vector<YaraRule::Result> results;
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for (const auto &[fileName, filePath] : *m_rulePaths) {
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YaraRule rule(filePath);
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task.setInterruptCallback([&rule] {
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rule.interrupt();
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});
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auto result = rule.match(provider, { provider->getBaseAddress(), provider->getSize() });
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if (!result.has_value()) {
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TaskManager::doLater([this, error = result.error()] {
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m_consoleMessages->emplace_back(error.message);
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});
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break;
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}
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results.emplace_back(result.value());
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task.update(progress);
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progress += 1;
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}
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TaskManager::doLater([this, results = std::move(results)] {
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this->clearResult();
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for (auto &result : results) {
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m_matchedRules->append_range(std::move(result.matchedRules));
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m_consoleMessages->append_range(std::move(result.consoleMessages));
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}
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constexpr static color_t YaraColor = 0x70B4771F;
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for (YaraRule::Rule &rule : *m_matchedRules) {
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for (auto &match : rule.matches) {
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m_highlightingIds->push_back(ImHexApi::HexEditor::addBackgroundHighlight(match.region, YaraColor));
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m_tooltipIds->push_back(ImHexApi::HexEditor::addTooltip(match.region, hex::format("{0} : {1} [{2}]", rule.identifier, fmt::join(rule.tags, ", "), match.variable), YaraColor));
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}
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}
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});
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});
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}
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} |