给定下面的代码，ReadProcessMemory 总是返回一个零数组。我试图在正在运行的进程中找到一个字符串（可能是数字）并识别该字符串存在的所有位置。但是 ReadProcessMemory 总是返回一个零数组。这是为什么？
- 我试过以管理员身份运行 VS 并删除不安全的块。
- processPointer 具有正确的进程句柄值。
- BaseAddress 确实正确地迭代了一个，并且似乎是我正在寻找的内存位置。
- 尽管显然没有找到任何匹配项，但它确实运行得相当快。72MB 进程需要几秒钟。
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// (other stuff in method...)
IntPtr baseAddress = process.MainModule.BaseAddress;
IntPtr lastAddress = baseAddress + process.MainModule.ModuleMemorySize;
processPointer = OpenProcess((uint)(0x0020), 1, (uint)PID);
for (int addr = (int)baseAddress; addr + value.Length < (int)lastAddress; addr++)
{
string ActualValue = ReadMemory((IntPtr)addr, (uint)value.Length, (IntPtr)addr);
if (string.IsNullOrEmpty(ActualValue)) continue;
if (ActualValue.Trim().ToLower() == value.Trim().ToLower())
PossibleAddresses.Add((IntPtr)addr);
}
// (other stuff in method...)
CloseHandle(processPointer);
private string ReadMemory(IntPtr memAddress, uint size, IntPtr BaseAddress)
{
byte[] buffer = new byte[size];
IntPtr bytesRead;
unsafe
{
ReadProcessMemory(processPointer, BaseAddress, buffer, size, out bytesRead);
return BitConverter.ToString(buffer); // always "00-00-00-00....."
}
return Encoding.Default.GetString(buffer); // Another way I tried to read the data
}
[DllImport("kernel32.dll")]
public static extern IntPtr OpenProcess(UInt32 dwDesiredAccess, Int32 bInheritHandle, UInt32 dwProcessId);
[DllImport("kernel32.dll")]
public static extern Int32 CloseHandle(IntPtr hObject);
[DllImport("kernel32.dll")]
public static extern Int32 ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, [In, Out] byte[] buffer, UInt32 size, out IntPtr lpNumberOfBytesRead);