refactor(core): add option that prints basic emulator properties

diff --git a/core/embed/projects/unix/main.c b/core/embed/projects/unix/main.c
index 5a3bd2ea..fabd3ae8 100644
--- a/core/embed/projects/unix/main.c
+++ b/core/embed/projects/unix/main.c
@@ -308,6 +308,7 @@ STATIC int usage(char **argv) {
   printf(
       "usage: %s [<opts>] [-X <implopt>] [-c <command>] [<filename>]\n"
       "Options:\n"
+      "--emulator-properties : print basic emulator info and exit\n"
       "-v : verbose (trace various operations); can be multiple\n"
       "-O[N] : apply bytecode optimizations of level N\n"
       "\n"
diff --git a/core/embed/projects/unix/main_main.c b/core/embed/projects/unix/main_main.c
index 7b766d9f..038951f3 100644
--- a/core/embed/projects/unix/main_main.c
+++ b/core/embed/projects/unix/main_main.c
@@ -79,6 +79,8 @@
 
 #include <SDL3/SDL.h>
 
+#include "version.h"
+
 static void drivers_deinit(void) { flash_deinit(); }
 
 static void drivers_init(void) {
@@ -169,6 +171,22 @@ static bool sdl_event_filter(void *userdata, SDL_Event *event) {
   return true;
 }
 
+// Can be used to get basic emulator properties before regularly starting it.
+// Needs to be called before it starts listening on UDP sockets in case there
+// are multiple copies of the process called, e.g. from multicore tests.
+static void print_emulator_properties_and_exit(void) {
+  printf("{\"internal_model\": \"%s\",\n", MODEL_INTERNAL_NAME);
+#ifdef USE_TROPIC
+  printf(" \"tropic\": true,\n");
+#endif
+#ifdef USE_BLE
+  printf(" \"ble\": true,\n");
+#endif
+  printf(" \"version\": \"%d.%d.%d.%d\"}\n", VERSION_MAJOR, VERSION_MINOR,
+         VERSION_PATCH, VERSION_BUILD);
+  exit(0);
+}
+
 // Kernel task main loop
 //
 // Returns when the coreapp task is terminated
@@ -185,6 +203,10 @@ static void kernel_loop(applet_t *coreapp) {
 int main(int argc, char **argv) {
   system_init(&rsod_panic_handler);
 
+  if (argc > 1 && strcmp(argv[1], "--emulator-properties") == 0) {
+    print_emulator_properties_and_exit();
+  }
+
 #ifdef USE_MCU_ATTESTATION
   {
     uint8_t mcu_device_cert[MCU_ATTESTATION_MAX_CERT_SIZE];
diff --git a/python/src/trezorlib/_internal/emulator.py b/python/src/trezorlib/_internal/emulator.py
index d3577900..18e94ff2 100644
--- a/python/src/trezorlib/_internal/emulator.py
+++ b/python/src/trezorlib/_internal/emulator.py
@@ -17,6 +17,7 @@
 from __future__ import annotations
 
 import atexit
+import json
 import logging
 import os
 import signal
@@ -355,6 +356,9 @@ class Emulator:
     def get_storage(self) -> bytes:
         return self.storage.read_bytes()
 
+    def properties(self) -> dict:
+        return {}
+
 
 class CoreEmulator(Emulator):
     STORAGE_FILENAME = "trezor.flash"
@@ -429,6 +433,28 @@ class CoreEmulator(Emulator):
     def tropic_port(self) -> int:
         return self.tropic_model_port or (self.port + 6)
 
+    def properties(self) -> dict[str, Any]:
+        args = [str(self.executable), "--emulator-properties"]
+        try:
+            stdout = subprocess.check_output(
+                args,
+                cwd=self.workdir,
+                env=self.make_env(),
+                stderr=subprocess.PIPE,
+                text=True,
+                timeout=5,
+            )
+            props = json.loads(stdout)
+            assert isinstance(props, dict)
+            return props
+        except subprocess.CalledProcessError as exc:
+            LOG.warning(
+                f"{' '.join(args)} failed: {exc}\nstdout: {exc.stdout}\nstderr: {exc.stderr}"
+            )
+        except Exception as exc:
+            LOG.warning(f"{' '.join(args)} failed: {exc}")
+        return {}
+
 
 class LegacyEmulator(Emulator):
     STORAGE_FILENAME = "emulator.img"