Initial Commit

library/library.cpp

@@ -0,0 +1,142 @@
+
+#include <Windows.h>
+#include <iostream>
+
+#include "library.h"
+#include "include/MinHook.h"
+
+// f3 0f 11 8f 98 0b 00 00
+
+byte orig_place[] = {0xf3, 0x0f, 0x11, 0x8f, 0x98, 0x0b, 0x00, 0x00};
+
+byte* rekordbox_base;
+
+
+
+struct ChannelInfo {
+    byte unk[288];
+    double bpm;
+    UINT64 unk2[2];
+    double secondsElapsed;
+    UINT64 unk3;
+    double beat;          // 328 + 8 = 336
+    double beatRounded;   // 336 + 8 = 344
+    byte unk4[76];
+    byte isPlaying;
+};
+
+typedef INT64(*updateChannelInfo)(ChannelInfo* channelInfo);
+updateChannelInfo pUpdateChannelInfo = nullptr;
+
+UINT64 count = 0;
+BOOL shouldPrint = false;
+INT64 detourUpdateChannelInfo(ChannelInfo* channelInfo) {
+    count++;
+
+    if(shouldPrint && count % 101 == 0) {
+        printf("Channel: 0x%llx\n", (UINT64)channelInfo);
+        printf("BPM:       %f\n", channelInfo->bpm );
+        printf("Time:      %f\n", channelInfo->secondsElapsed );
+        printf("Beat:      %f\n", channelInfo->beat );
+        printf("~Beat:     %f\n", channelInfo->beatRounded );
+        printf("RelBeat:   %i/4\n", ((int)channelInfo->beatRounded) % 4);
+        printf("RelBeatF:  %f\n", (channelInfo->beat - channelInfo->beatRounded) + ((int)channelInfo->beatRounded) % 4 );
+        printf("isPlaying: %i\n", channelInfo->isPlaying );
+        printf("--------------------\n");
+    }
+
+    INT64 result = pUpdateChannelInfo(channelInfo);
+    return result;
+}
+
+
+// Hook SyncManager? function
+typedef UINT64(*syncManager)(UINT64* param1);
+syncManager pSyncManager = nullptr;
+
+ChannelInfo* master = nullptr;
+
+UINT64 detourSyncManager(UINT64* param1) {
+    auto new_master = (ChannelInfo*)param1[0x1e];
+
+    if(master != new_master && new_master != nullptr) {
+        master = new_master;
+        printf("--------------------\n");
+        printf("New master: %llx\n", (UINT64)master);
+        printf("--------------------\n");
+    }
+
+    UINT64 result = pSyncManager(param1);
+    return result;
+}
+
+
+
+BOOL WINAPI DllMain(HMODULE hModule, DWORD dwReason, LPVOID lpReserved) {
+    if (dwReason == DLL_PROCESS_ATTACH) {
+        DisableThreadLibraryCalls(hModule);		//disables attach and detach notifications
+        CreateThread(NULL, NULL, (LPTHREAD_START_ROUTINE) entry, NULL, NULL, NULL);	//creates a new thread and starts at function entry()
+    }
+    else if (dwReason == DLL_PROCESS_DETACH) {
+        printf("Unloading RekordUnBox\n");
+        MH_Uninitialize();
+    }
+    return TRUE;
+}
+
+
+void entry() {
+    AllocConsole();
+    FILE* fp;
+    freopen_s(&fp, "CONOUT$", "w", stdout);
+
+    rekordbox_base = (byte*) GetModuleHandleA("rekordbox.exe");
+
+    printf("Injected RekordUnBox\n");\
+    printf("Rekordbox Base: 0x%ux\n", (unsigned long)rekordbox_base);
+
+    // Print 8 bytes at rekordbox.exe+0x193c8b0
+    byte* updateChannelInfo_location = (byte*)(rekordbox_base + 0x1acd290);
+
+    if (MH_Initialize() != MH_OK) {
+        printf("Failed to initialize MinHook\n");
+        fclose(fp);
+        return;
+    }
+
+    printf("Successfully initialized MinHook\n");
+
+
+    MH_STATUS status;
+
+    // Update loop
+    status = MH_CreateHook(updateChannelInfo_location, &detourUpdateChannelInfo, reinterpret_cast<void**>(&pUpdateChannelInfo));
+    if(status != MH_OK) {
+        printf("Error: Couldn't hook updateChannelInfo!\nError: %s", MH_StatusToString(status));
+        fclose(fp);
+        return;
+    }
+
+    // SyncManager
+    status = MH_CreateHook((byte*)(rekordbox_base + 0x18f7630), &detourSyncManager, reinterpret_cast<void**>(&pSyncManager));
+    if(status != MH_OK) {
+        printf("Error: Couldn't hook syncManager!\nError: %s", MH_StatusToString(status));
+        fclose(fp);
+        return;
+    }
+
+
+    if(MH_EnableHook(MH_ALL_HOOKS) != MH_OK) {
+        printf("Error: Couldn't enable hooks!\n");
+        fclose(fp);
+        return;
+    }
+
+    while (true) {
+        if (master != nullptr) {
+            printf("Master: %f\n", master->beat);
+        }
+
+        Sleep(1000);
+    }
+}

library/library.h

@@ -0,0 +1,6 @@
+#ifndef REKORDUNBOX_LIBRARY_H
+#define REKORDUNBOX_LIBRARY_H
+
+void entry();
+
+#endif //REKORDUNBOX_LIBRARY_H