Log message box strings

src/windows-emulator/emulator_utils.hpp

@@ -308,6 +308,27 @@ class emulator_allocator
     uint64_t active_address_{0};
 };
 
+template <typename Element>
+std::basic_string<Element> read_string(memory_manager& mem, const uint64_t address)
+{
+    std::basic_string<Element> result{};
+
+    for (size_t i = 0;; ++i)
+    {
+        Element element{};
+        mem.read_memory(address + (i * sizeof(element)), &element, sizeof(element));
+
+        if (!element)
+        {
+            break;
+        }
+
+        result.push_back(element);
+    }
+
+    return result;
+}
+
 inline std::u16string read_unicode_string(const emulator& emu, const UNICODE_STRING<EmulatorTraits<Emu64>> ucs)
 {
     static_assert(offsetof(UNICODE_STRING<EmulatorTraits<Emu64>>, Length) == 0);

src/windows-emulator/windows_emulator.cpp

@@ -394,6 +394,16 @@ void windows_emulator::on_instruction_execution(const uint64_t address)
             log.print(is_interesting_call ? color::yellow : color::dark_gray,
                       "Executing function: %s - %s (0x%" PRIx64 ") via (0x%" PRIx64 ") %s\n", binary->name.c_str(),
                       export_entry->second.c_str(), address, return_address, mod_name);
+
+            if (export_entry->second == "MessageBoxW")
+            {
+                log.log("--> %s\n",
+                        u16_to_u8(read_string<char16_t>(this->memory, this->emu().reg(x64_register::rdx))).c_str());
+            }
+            else if (export_entry->second == "MessageBoxA")
+            {
+                log.log("--> %s\n", read_string<char>(this->memory, this->emu().reg(x64_register::rdx)).c_str());
+            }
         }
         else if (address == binary->entry_point)
         {