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[HaRepacker] improve keygen compatibility with other ver. of maplesto…
…ry (AOB scanning)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| /*Copyright(c) 2024, LastBattle https://github.com/lastbattle/Harepacker-resurrected | ||
| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), to deal | ||
| in the Software without restriction, including without limitation the rights | ||
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| copies of the Software, and to permit persons to whom the Software is | ||
| furnished to do so, subject to the following conditions: | ||
| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| SOFTWARE. | ||
| */ | ||
|
|
||
| using HaSharedLibrary.SystemInterop; | ||
| using System; | ||
| using System.Collections.Generic; | ||
| using System.Diagnostics; | ||
| using System.Linq; | ||
| using System.Runtime.InteropServices; | ||
| using System.Text; | ||
| using System.Threading.Tasks; | ||
| using System.Windows; | ||
|
|
||
| namespace HaSharedLibrary.Util { | ||
|
|
||
| public class MemoryScannerHelper { | ||
|
|
||
|
|
||
| /// <summary> | ||
| /// Searches the memory for byte array pattern | ||
| /// </summary> | ||
| /// <param name="processHandle">Process.GetCurrentProcess().Handle</param> | ||
| /// <param name="startAddress"></param> | ||
| /// <param name="endAddress"></param> | ||
| /// <param name="searchPattern">i.e [AC ?? 00 00 EE 5F ??]</param> | ||
| /// <returns></returns> | ||
| public static IntPtr ScanCurrentProcessMemory(IntPtr processHandle, long startAddress, long endAddress, string searchPattern) { | ||
| try { | ||
| int bufferSize = 4096; | ||
| byte[] buffer = new byte[bufferSize]; | ||
|
|
||
| for (long currentAddress = startAddress; currentAddress < endAddress; currentAddress += bufferSize) { | ||
| IntPtr bytesRead; | ||
| if (!kernel32.ReadProcessMemory(processHandle, (IntPtr)currentAddress, buffer, bufferSize, out bytesRead)) { | ||
| continue; // Skip if we can't read this memory region | ||
| } | ||
|
|
||
| int actualBytesRead = bytesRead.ToInt32(); | ||
|
|
||
| byte?[] pattern = ParseSearchPattern(searchPattern); | ||
| int result = SearchPattern(buffer, actualBytesRead, pattern); | ||
|
|
||
| if (result != -1) { | ||
| return (IntPtr)(currentAddress + result); | ||
| } | ||
| } | ||
|
|
||
| return IntPtr.Zero; // Pattern not found | ||
| } | ||
| catch (Exception ex) { | ||
| Debug.WriteLine($"An error occurred: {ex.Message}"); | ||
| return IntPtr.Zero; | ||
| } | ||
| } | ||
|
|
||
| /// <summary> | ||
| /// Parses an array-of-byte [AOB] search pattern | ||
| /// </summary> | ||
| /// <param name="pattern">i.e [AC ?? 00 00 EE 5F ??]</param> | ||
| /// <returns></returns> | ||
| private static byte?[] ParseSearchPattern(string pattern) { | ||
| return pattern.Split(' ') | ||
| .Select(b => b == "??" ? (byte?)null : Convert.ToByte(b, 16)) | ||
| .ToArray(); | ||
| } | ||
|
|
||
| private static int SearchPattern(byte[] haystack, int haystackLength, byte?[] needle) { | ||
| int needleLength = needle.Length; | ||
| for (int i = 0; i <= haystackLength - needleLength; i++) { | ||
| bool found = true; | ||
| for (int j = 0; j < needleLength; j++) { | ||
| if (needle[j].HasValue && haystack[i + j] != needle[j].Value) { | ||
| found = false; | ||
| break; | ||
| } | ||
| } | ||
| if (found) { | ||
| return i; | ||
| } | ||
| } | ||
| return -1; | ||
| } | ||
| } | ||
| } |