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BattleyePresentCheck/utils.cpp

@@ -0,0 +1,44 @@
+#include "utils.h"
+
+uintptr_t utils::scanpattern(uintptr_t base, int size, const char* signature)
+{
+    static auto patternToByte = [](const char* pattern)
+    {
+        auto       bytes = std::vector<int>{};
+        const auto start = const_cast<char*>(pattern);
+        const auto end = const_cast<char*>(pattern) + strlen(pattern);
+
+        for (auto current = start; current < end; ++current)
+        {
+            if (*current == '?')
+            {
+                ++current;
+                if (*current == '?')
+                    ++current;
+                bytes.push_back(-1);
+            }
+            else { bytes.push_back(strtoul(current, &current, 16)); }
+        }
+        return bytes;
+    };
+    auto       patternBytes = patternToByte(signature);
+    const auto scanBytes = reinterpret_cast<std::uint8_t*>(base);
+
+    const auto s = patternBytes.size();
+    const auto d = patternBytes.data();
+
+    for (auto i = 0ul; i < size - s; ++i)
+    {
+        bool found = true;
+        for (auto j = 0ul; j < s; ++j)
+        {
+            if (scanBytes[i + j] != d[j] && d[j] != -1)
+            {
+                found = false;
+                break;
+            }
+        }
+        if (found) { return reinterpret_cast<uintptr_t>(&scanBytes[i]); }
+    }
+    return NULL;
+}