Jupiter: A C# repository from Akaion

Jupiter

A Windows virtual memory editing library with support for pattern scanning.

Features

Allocate memory
Free memory
Protect memory
Read memory
Write memory

Pattern Scanning Features

Support for wildcard bytes
A Bower-Moore-Horspool algorithm implementation for fast scanning, particularly for large patterns

Installation

Download and install Jupiter using NuGet

Usage

The example below describes a basic implementation of the library

using Jupiter;

using (var memoryModule = new MemoryModule(processName))
{
    // Allocate a region of virtual memory in the process

    var regionAddress = memoryModule.AllocateVirtualMemory(sizeof(int), MemoryProtection.ReadWrite);

    // Write a value into the newely allocated region

    memoryModule.WriteVirtualMemory(regionAddress, 25);

    // Scan for the value we just wrote into memory

    var patternAddresses = memoryModule.PatternScan(BitConverter.GetBytes(25));

    // Read the value back

    var value = memoryModule.ReadVirtualMemory<int>(regionAddress);

    // Free the region of virtual memory

    memoryModule.FreeVirtualMemory(regionAddress);
}

Overloads

You can use a process ID instead of a process name.

var memoryModule = new MemoryModule(processId)

You can specify an address in which you want to allocate a region of virtual memory.

var regionAddress = memoryModule.AllocateVirtualMemory(pointer, sizeof(int), MemoryProtection.ReadWrite);

You can read an array of bytes instead of a structure.

var bytes = memoryModule.ReadVirtualMemory(regionAddress, bytesToRead);

You can write an array of bytes instead of a structure.

memoryModule.WriteVirtualMemory(regionAddress, new byte[] {0x19, 0xF0, 0x00, 0x2A});

You can use a string with wildcards as the pattern for pattern scanning.

memoryModule.PatternScan("19 F0 ?? 2A");

You can specify a base address in which the pattern scanning should start at to allow quicker scans.

memoryModule.PatternScan(pointer, BitConverter.GetBytes(25));

Caveats

If no memory protection constant is specified when allocating virtual memory, ExecuteReadWrite will be used.
Pattern scanning with a small pattern may take a long time depending on the speed of your CPU.

Contributing

Pull requests are welcome.

For large changes, please open an issue first to discuss what you would like to contribute.

Akaion/Jupiter