From b7ae95de62d0d82b4f8429e7982ff2370e5f42a1 Mon Sep 17 00:00:00 2001
From: jazzwolf <114281491+jazzwolf@users.noreply.github.com>
Date: Fri, 7 Oct 2022 18:37:14 +0200
Subject: [PATCH] Fix nullptr exception when restoring debug functions

---
 src/client/component/arxan.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/client/component/arxan.cpp b/src/client/component/arxan.cpp
index e052b166..b2d9dd9e 100644
--- a/src/client/component/arxan.cpp
+++ b/src/client/component/arxan.cpp
@@ -378,6 +378,11 @@ namespace arxan
 			for (auto i = 0u; i < ARRAYSIZE(functions); ++i)
 			{
 				const auto func = ntdll.get_proc<void*>(functions[i]);
+				if (!func)
+				{
+					continue;
+				}
+				
 				if (!loaded)
 				{
 					memcpy(buffers[i], func, sizeof(buffer));
@@ -700,7 +705,7 @@ namespace arxan
 		void pre_start() override
 		{
 			disable_tls_callbacks();
-			//restore_debug_functions();
+			restore_debug_functions();
 
 			hide_being_debugged();
 			scheduler::loop(hide_being_debugged, scheduler::pipeline::async);