Cheat Engine :: View topic - [C# or vb.net][help]Memory Scan

Cheat Engine
The Official Site of Cheat Engine

FAQ

Memberlist

Usergroups

Profile

[C# or vb.net][help]Memory Scan

Cheat Engine Forum Index -> General programming

View previous topic :: View next topic

Author

Message

myown
How do I cheat?

Reputation: 0

Joined: 11 Mar 2014
Posts: 9

Posted: Tue Mar 11, 2014 6:40 pm Post subject: [C# or vb.net][help]Memory Scan

how i can Scan Array of byre and add address in ListView i made scan int 16 int 32 int 64 but how i can Scan Array of byre?

atom0s
Moderator

Reputation: 205

Joined: 25 Jan 2006
Posts: 8587
Location: 127.0.0.1

Posted: Tue Mar 11, 2014 7:27 pm Post subject:

Old C# implementation I made of FindPattern to do aob scanning:

Code:

/**
* sigScan C# Implementation - Written by atom0s [aka Wiccaan]
* Class Version: 2.0.0
*
* [ CHANGE LOG ] -------------------------------------------------------------------------
*
* 2.0.0
* - Updated to no longer require unsafe or fixed code.
* - Removed unneeded methods and code.
*
* 1.0.0
* - First version written and release.
*
* [ CREDITS ] ----------------------------------------------------------------------------
*
* sigScan is based on the FindPattern code written by
* dom1n1k and Patrick at GameDeception.net
*
* Full credit to them for the purpose of this code. I, atom0s, simply
* take credit for converting it to C#.
*
*/

namespace Wardrobe.Classes
{
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;

public class SigScan
{
/// <summary>
/// ReadProcessMemory
///
/// API import definition for ReadProcessMemory.
/// </summary>
/// <param name="hProcess">Handle to the process we want to read from.</param>
/// <param name="lpBaseAddress">The base address to start reading from.</param>
/// <param name="lpBuffer">The return buffer to write the read data to.</param>
/// <param name="dwSize">The size of data we wish to read.</param>
/// <param name="lpNumberOfBytesRead">The number of bytes successfully read.</param>
/// <returns></returns>
[DllImport("kernel32.dll", SetLastError = true)]
private static extern bool ReadProcessMemory(
IntPtr hProcess,
IntPtr lpBaseAddress,
[Out] byte[] lpBuffer,
int dwSize,
out int lpNumberOfBytesRead
);

/// <summary>
/// m_vDumpedRegion
///
/// The memory dumped from the external process.
/// </summary>
private byte[] m_vDumpedRegion;

/// <summary>
/// m_vProcess
///
/// The process we want to read the memory of.
/// </summary>
private Process m_vProcess;

/// <summary>
/// m_vAddress
///
/// The starting address we want to begin reading at.
/// </summary>
private IntPtr m_vAddress;

/// <summary>
/// m_vSize
///
/// The number of bytes we wish to read from the process.
/// </summary>
private int m_vSize;

#region "sigScan Class Construction"
/// <summary>
/// SigScan
///
/// Main class constructor that uses no params.
/// Simply initializes the class properties and
/// expects the user to set them later.
/// </summary>
public SigScan()
{
this.m_vProcess = null;
this.m_vAddress = IntPtr.Zero;
this.m_vSize = 0;
this.m_vDumpedRegion = null;
}

/// <summary>
/// SigScan
///
/// Overloaded class constructor that sets the class
/// properties during construction.
/// </summary>
/// <param name="proc">The process to dump the memory from.</param>
/// <param name="addr">The started address to begin the dump.</param>
/// <param name="size">The size of the dump.</param>
public SigScan(Process proc, IntPtr addr, int size)
{
this.m_vProcess = proc;
this.m_vAddress = addr;
this.m_vSize = size;
}
#endregion

#region "sigScan Class Private Methods"
/// <summary>
/// DumpMemory
///
/// Internal memory dump function that uses the set class
/// properties to dump a memory region.
/// </summary>
/// <returns>Boolean based on RPM results and valid properties.</returns>
private bool DumpMemory()
{
try
{
// Checks to ensure we have valid data.
if (this.m_vProcess == null)
return false;
if (this.m_vProcess.HasExited)
return false;
if (this.m_vAddress == IntPtr.Zero)
return false;
if (this.m_vSize == 0)
return false;

// Create the region space to dump into.
this.m_vDumpedRegion = new byte[this.m_vSize];

int nBytesRead;

// Dump the memory.
var ret = ReadProcessMemory(
this.m_vProcess.Handle, this.m_vAddress, this.m_vDumpedRegion, this.m_vSize, out nBytesRead
);

// Validation checks.
return ret && nBytesRead == this.m_vSize;
}
catch (Exception)
{
return false;
}
}

/// <summary>
/// MaskCheck
///
/// Compares the current pattern byte to the current memory dump
/// byte to check for a match. Uses wildcards to skip bytes that
/// are deemed unneeded in the compares.
/// </summary>
/// <param name="nOffset">Offset in the dump to start at.</param>
/// <param name="btPattern">Pattern to scan for.</param>
/// <param name="strMask">Mask to compare against.</param>
/// <returns>Boolean depending on if the pattern was found.</returns>
private bool MaskCheck(int nOffset, IEnumerable<byte> btPattern, string strMask)
{
// Loop the pattern and compare to the mask and dump.
return !btPattern.Where((t, x) => strMask[x] != '?' && ((strMask[x] == 'x') && (t != this.m_vDumpedRegion[nOffset + x]))).Any();
}
#endregion

#region "sigScan Class Public Methods"
/// <summary>
/// FindPattern
///
/// Attempts to locate the given pattern inside the dumped memory region
/// compared against the given mask. If the pattern is found, the offset
/// is added to the located address and returned to the user.
/// </summary>
/// <param name="btPattern">Byte pattern to look for in the dumped region.</param>
/// <param name="strMask">The mask string to compare against.</param>
/// <param name="nOffset">The offset added to the result address.</param>
/// <returns>IntPtr - zero if not found, address if found.</returns>
public IntPtr FindPattern(byte[] btPattern, string strMask, int nOffset)
{
try
{
// Dump the memory region if we have not dumped it yet.
if (this.m_vDumpedRegion == null || this.m_vDumpedRegion.Length == 0)
{
if (!this.DumpMemory())
return IntPtr.Zero;
}

// Ensure the mask and pattern lengths match.
if (strMask.Length != btPattern.Length)
return IntPtr.Zero;

// Loop the region and look for the pattern.
for (var x = 0; x < this.m_vDumpedRegion.Length; x++)
{
if (this.MaskCheck(x, btPattern, strMask))
{
// The pattern was found, return it.
return new IntPtr((int)this.m_vAddress + (x + nOffset));
}
}

// Pattern was not found.
return IntPtr.Zero;
}
catch (Exception)
{
return IntPtr.Zero;
}
}

/// <summary>
/// ResetRegion
///
/// Resets the memory dump array to nothing to allow
/// the class to redump the memory.
/// </summary>
public void ResetRegion()
{
this.m_vDumpedRegion = null;
}
#endregion

#region "sigScan Class Properties"
public Process Process
{
get { return this.m_vProcess; }
set { this.m_vProcess = value; }
}

public IntPtr Address
{
get { return this.m_vAddress; }
set { this.m_vAddress = value; }
}

public int Size
{
get { return this.m_vSize; }
set { this.m_vSize = value; }
}
#endregion
}
}

_________________

- Retired.

myown
How do I cheat?

Reputation: 0

Joined: 11 Mar 2014
Posts: 9

Posted: Wed Mar 12, 2014 12:39 am Post subject:

atom0s wrote:

Old C# implementation I made of FindPattern to do aob scanning:

Code:

Possible to explain these codes ?

Display posts from previous:

	Cheat Engine Forum Index -> General programming	All times are GMT - 6 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum