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795 lines (653 loc) · 22.4 KB
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using System;
using System.Collections.Generic;
using System.Diagnostics.Contracts;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using ReClassNET.AddressParser;
using ReClassNET.Core;
using ReClassNET.Debugger;
using ReClassNET.Extensions;
using ReClassNET.Native;
using ReClassNET.Symbols;
using ReClassNET.Util;
namespace ReClassNET.Memory
{
public delegate void RemoteProcessEvent(RemoteProcess sender);
public class RemoteProcess : IDisposable
{
private readonly object processSync = new object();
private readonly CoreFunctionsManager coreFunctions;
private readonly RemoteDebugger debugger;
private readonly Dictionary<IntPtr, string> rttiCache = new Dictionary<IntPtr, string>();
private readonly List<Module> modules = new List<Module>();
private readonly List<Section> sections = new List<Section>();
private readonly SymbolStore symbols = new SymbolStore();
private ProcessInfo process;
private IntPtr handle;
/// <summary>Event which gets invoked when a process was opened.</summary>
public event RemoteProcessEvent ProcessAttached;
/// <summary>Event which gets invoked before a process gets closed.</summary>
public event RemoteProcessEvent ProcessClosing;
/// <summary>Event which gets invoked after a process was closed.</summary>
public event RemoteProcessEvent ProcessClosed;
public CoreFunctionsManager CoreFunctions => coreFunctions;
public RemoteDebugger Debugger => debugger;
public ProcessInfo UnderlayingProcess => process;
public SymbolStore Symbols => symbols;
/// <summary>Gets a copy of the current modules list. This list may change if the remote process (un)loads a module.</summary>
public IEnumerable<Module> Modules
{
get
{
List<Module> cpy;
lock (modules)
{
cpy = modules.ToList();
}
return cpy;
}
}
/// <summary>Gets a copy of the current sections list. This list may change if the remote process (un)loads a section.</summary>
public IEnumerable<Section> Sections
{
get
{
List<Section> cpy;
lock (sections)
{
cpy = sections.ToList();
}
return cpy;
}
}
/// <summary>A map of named addresses.</summary>
public Dictionary<IntPtr, string> NamedAddresses { get; } = new Dictionary<IntPtr, string>();
public bool IsValid => process != null && coreFunctions.IsProcessValid(handle);
public RemoteProcess(CoreFunctionsManager coreFunctions)
{
Contract.Requires(coreFunctions != null);
this.coreFunctions = coreFunctions;
debugger = new RemoteDebugger(this);
}
public void Dispose()
{
Close();
}
/// <summary>Opens the given process to gather informations from.</summary>
/// <param name="info">The process information.</param>
public void Open(ProcessInfo info)
{
Contract.Requires(info != null);
if (process != info)
{
lock (processSync)
{
Close();
rttiCache.Clear();
process = info;
handle = coreFunctions.OpenRemoteProcess(process.Id, ProcessAccess.Full);
}
ProcessAttached?.Invoke(this);
}
}
/// <summary>Closes the underlaying process. If the debugger is attached, it will automaticly detached.</summary>
public void Close()
{
if (process != null)
{
ProcessClosing?.Invoke(this);
lock (processSync)
{
debugger.Terminate();
coreFunctions.CloseRemoteProcess(handle);
handle = IntPtr.Zero;
process = null;
}
ProcessClosed?.Invoke(this);
}
}
#region ReadMemory
/// <summary>Reads remote memory from the address into the buffer.</summary>
/// <param name="address">The address to read from.</param>
/// <param name="buffer">[out] The data buffer to fill. If the remote process is not valid, the buffer will get filled with zeros.</param>
public bool ReadRemoteMemoryIntoBuffer(IntPtr address, ref byte[] buffer)
{
Contract.Requires(buffer != null);
Contract.Ensures(Contract.ValueAtReturn(out buffer) != null);
return ReadRemoteMemoryIntoBuffer(address, ref buffer, 0, buffer.Length);
}
/// <summary>Reads remote memory from the address into the buffer.</summary>
/// <param name="address">The address to read from.</param>
/// <param name="buffer">[out] The data buffer to fill. If the remote process is not valid, the buffer will get filled with zeros.</param>
/// <param name="offset">The offset in the data.</param>
/// <param name="length">The number of bytes to read.</param>
public bool ReadRemoteMemoryIntoBuffer(IntPtr address, ref byte[] buffer, int offset, int length)
{
Contract.Requires(buffer != null);
Contract.Requires(offset >= 0);
Contract.Requires(length >= 0);
Contract.Requires(offset + length <= buffer.Length);
Contract.Ensures(Contract.ValueAtReturn(out buffer) != null);
Contract.EndContractBlock();
if (!IsValid)
{
Close();
buffer.FillWithZero();
return false;
}
return coreFunctions.ReadRemoteMemory(handle, address, ref buffer, offset, length);
}
/// <summary>Reads <paramref name="size"/> bytes from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <param name="size">The size in bytes to read.</param>
/// <returns>An array of bytes.</returns>
public byte[] ReadRemoteMemory(IntPtr address, int size)
{
Contract.Requires(size >= 0);
Contract.Ensures(Contract.Result<byte[]>() != null);
var data = new byte[size];
ReadRemoteMemoryIntoBuffer(address, ref data);
return data;
}
/// <summary>Reads the object from the address in the remote process.</summary>
/// <typeparam name="T">Type of the value to read.</typeparam>
/// <param name="address">The address to read from.</param>
/// <returns>The remote object.</returns>
public T ReadRemoteObject<T>(IntPtr address) where T : struct
{
var data = ReadRemoteMemory(address, Marshal.SizeOf<T>());
var gcHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
var obj = (T)Marshal.PtrToStructure(gcHandle.AddrOfPinnedObject(), typeof(T));
gcHandle.Free();
return obj;
}
#region Read Remote Primitive Types
/// <summary>Reads a <see cref="sbyte"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="sbyte"/> or 0 if the read fails.</returns>
public sbyte ReadRemoteInt8(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(sbyte));
return (sbyte)data[0];
}
/// <summary>Reads a <see cref="byte"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="byte"/> or 0 if the read fails.</returns>
public byte ReadRemoteUInt8(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(byte));
return data[0];
}
/// <summary>Reads a <see cref="short"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="short"/> or 0 if the read fails.</returns>
public short ReadRemoteInt16(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(short));
return BitConverter.ToInt16(data, 0);
}
/// <summary>Reads a <see cref="ushort"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="ushort"/> or 0 if the read fails.</returns>
public ushort ReadRemoteUInt16(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(ushort));
return BitConverter.ToUInt16(data, 0);
}
/// <summary>Reads a <see cref="int"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="int"/> or 0 if the read fails.</returns>
public int ReadRemoteInt32(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(int));
return BitConverter.ToInt32(data, 0);
}
/// <summary>Reads a <see cref="uint"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="uint"/> or 0 if the read fails.</returns>
public uint ReadRemoteUInt32(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(uint));
return BitConverter.ToUInt32(data, 0);
}
/// <summary>Reads a <see cref="long"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="long"/> or 0 if the read fails.</returns>
public long ReadRemoteInt64(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(long));
return BitConverter.ToInt64(data, 0);
}
/// <summary>Reads a <see cref="ulong"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="ulong"/> or 0 if the read fails.</returns>
public ulong ReadRemoteUInt64(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(ulong));
return BitConverter.ToUInt64(data, 0);
}
/// <summary>Reads a <see cref="float"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="float"/> or 0 if the read fails.</returns>
public float ReadRemoteFloat(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(float));
return BitConverter.ToSingle(data, 0);
}
/// <summary>Reads a <see cref="double"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="double"/> or 0 if the read fails.</returns>
public double ReadRemoteDouble(IntPtr address)
{
var data = ReadRemoteMemory(address, sizeof(double));
return BitConverter.ToDouble(data, 0);
}
/// <summary>Reads a <see cref="IntPtr"/> from the address in the remote process.</summary>
/// <param name="address">The address to read from.</param>
/// <returns>The data read as <see cref="IntPtr"/> or 0 if the read fails.</returns>
public IntPtr ReadRemoteIntPtr(IntPtr address)
{
#if RECLASSNET64
return (IntPtr)ReadRemoteInt64(address);
#else
return (IntPtr)ReadRemoteInt32(address);
#endif
}
#endregion
/// <summary>Reads a string from the address in the remote process with the given length using the provided encoding.</summary>
/// <param name="encoding">The encoding used by the string.</param>
/// <param name="address">The address of the string.</param>
/// <param name="length">The length of the string.</param>
/// <returns>The string.</returns>
public string ReadRemoteString(Encoding encoding, IntPtr address, int length)
{
Contract.Requires(encoding != null);
Contract.Requires(length >= 0);
Contract.Ensures(Contract.Result<string>() != null);
var data = ReadRemoteMemory(address, length);
try
{
var sb = new StringBuilder(encoding.GetString(data));
for (var i = 0; i < sb.Length; ++i)
{
if (sb[i] == 0)
{
sb.Length = i;
break;
}
if (!sb[i].IsPrintable())
{
sb[i] = '.';
}
}
return sb.ToString();
}
catch
{
return string.Empty;
}
}
/// <summary>Reads a string from the address in the remote process with the given length using UTF8 encoding. The string gets truncated at the first zero character.</summary>
/// <param name="address">The address of the string.</param>
/// <param name="length">The length of the string.</param>
/// <returns>The string.</returns>
public string ReadRemoteUTF8StringUntilFirstNullCharacter(IntPtr address, int length)
{
Contract.Requires(length >= 0);
Contract.Ensures(Contract.Result<string>() != null);
var data = ReadRemoteMemory(address, length);
int index = 0;
for (; index < data.Length; ++index)
{
if (data[index] == 0)
{
break;
}
}
try
{
return Encoding.UTF8.GetString(data, 0, Math.Min(index, data.Length));
}
catch
{
return string.Empty;
}
}
/// <summary>Reads remote runtime type information for the given address from the remote process.</summary>
/// <param name="address">The address.</param>
/// <returns>A string containing the runtime type information or null if no information could get found.</returns>
public string ReadRemoteRuntimeTypeInformation(IntPtr address)
{
if (address.MayBeValid())
{
if (!rttiCache.TryGetValue(address, out var rtti))
{
var objectLocatorPtr = ReadRemoteIntPtr(address - IntPtr.Size);
if (objectLocatorPtr.MayBeValid())
{
#if RECLASSNET64
rtti = ReadRemoteRuntimeTypeInformation64(objectLocatorPtr);
#else
rtti = ReadRemoteRuntimeTypeInformation32(objectLocatorPtr);
#endif
rttiCache[address] = rtti;
}
}
return rtti;
}
return null;
}
private string ReadRemoteRuntimeTypeInformation32(IntPtr address)
{
var classHierarchyDescriptorPtr = ReadRemoteIntPtr(address + 0x10);
if (classHierarchyDescriptorPtr.MayBeValid())
{
var baseClassCount = ReadRemoteInt32(classHierarchyDescriptorPtr + 8);
if (baseClassCount > 0 && baseClassCount < 25)
{
var baseClassArrayPtr = ReadRemoteIntPtr(classHierarchyDescriptorPtr + 0xC);
if (baseClassArrayPtr.MayBeValid())
{
var sb = new StringBuilder();
for (var i = 0; i < baseClassCount; ++i)
{
var baseClassDescriptorPtr = ReadRemoteIntPtr(baseClassArrayPtr + (4 * i));
if (baseClassDescriptorPtr.MayBeValid())
{
var typeDescriptorPtr = ReadRemoteIntPtr(baseClassDescriptorPtr);
if (typeDescriptorPtr.MayBeValid())
{
var name = ReadRemoteUTF8StringUntilFirstNullCharacter(typeDescriptorPtr + 0x0C, 60);
if (name.EndsWith("@@"))
{
name = NativeMethods.UndecorateSymbolName("?" + name);
}
sb.Append(name);
sb.Append(" : ");
continue;
}
}
break;
}
if (sb.Length != 0)
{
sb.Length -= 3;
return sb.ToString();
}
}
}
}
return null;
}
private string ReadRemoteRuntimeTypeInformation64(IntPtr address)
{
int baseOffset = ReadRemoteInt32(address + 0x14);
if (baseOffset != 0)
{
var baseAddress = address - baseOffset;
var classHierarchyDescriptorOffset = ReadRemoteInt32(address + 0x10);
if (classHierarchyDescriptorOffset != 0)
{
var classHierarchyDescriptorPtr = baseAddress + classHierarchyDescriptorOffset;
var baseClassCount = ReadRemoteInt32(classHierarchyDescriptorPtr + 0x08);
if (baseClassCount > 0 && baseClassCount < 25)
{
var baseClassArrayOffset = ReadRemoteInt32(classHierarchyDescriptorPtr + 0x0C);
if (baseClassArrayOffset != 0)
{
var baseClassArrayPtr = baseAddress + baseClassArrayOffset;
var sb = new StringBuilder();
for (var i = 0; i < baseClassCount; ++i)
{
var baseClassDescriptorOffset = ReadRemoteInt32(baseClassArrayPtr + (4 * i));
if (baseClassDescriptorOffset != 0)
{
var baseClassDescriptorPtr = baseAddress + baseClassDescriptorOffset;
var typeDescriptorOffset = ReadRemoteInt32(baseClassDescriptorPtr);
if (typeDescriptorOffset != 0)
{
var typeDescriptorPtr = baseAddress + typeDescriptorOffset;
var name = ReadRemoteUTF8StringUntilFirstNullCharacter(typeDescriptorPtr + 0x14, 60);
if (string.IsNullOrEmpty(name))
{
break;
}
if (name.EndsWith("@@"))
{
name = NativeMethods.UndecorateSymbolName("?" + name);
}
sb.Append(name);
sb.Append(" : ");
continue;
}
}
break;
}
if (sb.Length != 0)
{
sb.Length -= 3;
return sb.ToString();
}
}
}
}
}
return null;
}
#endregion
#region WriteMemory
/// <summary>Writes the given <paramref name="data"/> to the <paramref name="address"/> in the remote process.</summary>
/// <param name="address">The address to write to.</param>
/// <param name="data">The data to write.</param>
/// <returns>True if it succeeds, false if it fails.</returns>
public bool WriteRemoteMemory(IntPtr address, byte[] data)
{
Contract.Requires(data != null);
if (!IsValid)
{
return false;
}
return coreFunctions.WriteRemoteMemory(handle, address, ref data, 0, data.Length);
}
/// <summary>Writes the given <paramref name="value"/> to the <paramref name="address"/> in the remote process.</summary>
/// <typeparam name="T">Type of the value to write.</typeparam>
/// <param name="address">The address to write to.</param>
/// <param name="value">The value to write.</param>
/// <returns>True if it succeeds, false if it fails.</returns>
public bool WriteRemoteMemory<T>(IntPtr address, T value) where T : struct
{
var data = new byte[Marshal.SizeOf<T>()];
var gcHandle = GCHandle.Alloc(data, GCHandleType.Pinned);
Marshal.StructureToPtr(value, gcHandle.AddrOfPinnedObject(), false);
gcHandle.Free();
return WriteRemoteMemory(address, data);
}
#endregion
public Section GetSectionToPointer(IntPtr address)
{
lock (sections)
{
return sections.BinaryFind(s => address.CompareToRange(s.Start, s.End));
}
}
public Module GetModuleToPointer(IntPtr address)
{
lock (modules)
{
return modules.BinaryFind(m => address.CompareToRange(m.Start, m.End));
}
}
public Module GetModuleByName(string name)
{
lock (modules)
{
return modules
.FirstOrDefault(m => m.Name.Equals(name, StringComparison.InvariantCultureIgnoreCase));
}
}
/// <summary>Tries to map the given address to a section or a module of the process.</summary>
/// <param name="address">The address to map.</param>
/// <returns>The named address or null if no mapping exists.</returns>
public string GetNamedAddress(IntPtr address)
{
if (NamedAddresses.TryGetValue(address, out var namedAddress))
{
return namedAddress;
}
var section = GetSectionToPointer(address);
if (section != null)
{
if (section.Category == SectionCategory.CODE || section.Category == SectionCategory.DATA)
{
// Code and Data sections belong to a module.
return $"<{section.Category}>{section.ModuleName}.{address.ToString("X")}";
}
if (section.Category == SectionCategory.HEAP)
{
return $"<HEAP>{address.ToString("X")}";
}
}
var module = GetModuleToPointer(address);
if (module != null)
{
return $"{module.Name}.{address.ToString("X")}";
}
return null;
}
public void EnumerateRemoteSectionsAndModules(Action<Section> callbackSection, Action<Module> callbackModule)
{
if (!IsValid)
{
return;
}
coreFunctions.EnumerateRemoteSectionsAndModules(handle, callbackSection, callbackModule);
}
public bool EnumerateRemoteSectionsAndModules(out List<Section> sections, out List<Module> modules)
{
if (!IsValid)
{
sections = null;
modules = null;
return false;
}
coreFunctions.EnumerateRemoteSectionsAndModules(handle, out sections, out modules);
return true;
}
/// <summary>Updates the process informations.</summary>
public void UpdateProcessInformations()
{
UpdateProcessInformationsAsync().Wait();
}
/// <summary>Updates the process informations asynchronous.</summary>
/// <returns>The Task.</returns>
public Task UpdateProcessInformationsAsync()
{
Contract.Ensures(Contract.Result<Task>() != null);
if (!IsValid)
{
lock(modules)
{
modules.Clear();
}
lock(sections)
{
sections.Clear();
}
// TODO: Mono doesn't support Task.CompletedTask at the moment.
//return Task.CompletedTask;
return Task.FromResult(true);
}
return Task.Run(() =>
{
EnumerateRemoteSectionsAndModules(out var newSections, out var newModules);
newModules.Sort((m1, m2) => m1.Start.CompareTo(m2.Start));
newSections.Sort((s1, s2) => s1.Start.CompareTo(s2.Start));
lock (modules)
{
modules.Clear();
modules.AddRange(newModules);
}
lock (sections)
{
sections.Clear();
sections.AddRange(newSections);
}
});
}
/// <summary>Parse the address formula.</summary>
/// <param name="addressFormula">The address formula.</param>
/// <returns>The result of the parsed address or <see cref="IntPtr.Zero"/>.</returns>
public IntPtr ParseAddress(string addressFormula)
{
Contract.Requires(addressFormula != null);
var reader = new TokenReader();
var tokens = reader.Read(addressFormula);
var astBuilder = new AstBuilder();
var operation = astBuilder.Build(tokens);
if (operation == null)
{
return IntPtr.Zero;
}
var interpreter = new Interpreter();
return interpreter.Execute(operation, this);
}
/// <summary>Loads all symbols asynchronous.</summary>
/// <param name="progress">The progress reporter is called for every module. Can be null.</param>
/// <param name="token">The token used to cancel the task.</param>
/// <returns>The task.</returns>
public Task LoadAllSymbolsAsync(IProgress<Tuple<Module, IEnumerable<Module>>> progress, CancellationToken token)
{
List<Module> copy;
lock (modules)
{
copy = modules.ToList();
}
// Try to resolve all symbols in a background thread. This can take a long time because symbols are downloaded from the internet.
// The COM objects can only be used in the thread they were created so we can't use them.
// Thats why an other task loads the real symbols afterwards in the UI thread context.
return Task.Run(
() =>
{
foreach (var module in copy)
{
token.ThrowIfCancellationRequested();
progress?.Report(Tuple.Create<Module, IEnumerable<Module>>(module, copy));
Symbols.TryResolveSymbolsForModule(module);
}
},
token
)
.ContinueWith(
_ =>
{
foreach (var module in copy)
{
token.ThrowIfCancellationRequested();
try
{
Symbols.LoadSymbolsForModule(module);
}
catch
{
//ignore
}
}
},
token,
TaskContinuationOptions.None,
TaskScheduler.FromCurrentSynchronizationContext()
);
}
public void ControlRemoteProcess(ControlRemoteProcessAction action)
{
if (!IsValid)
{
return;
}
coreFunctions.ControlRemoteProcess(handle, action);
}
}
}