Collaboration diagram for xeno_rat_server.Compression:

Static Public Member Functions
static byte[]	Compress (byte[] buffer)
	Compresses the input buffer using the LZNT1 compression format and returns the compressed data.

static byte[]	Decompress (byte[] buffer, int original_size)
	Decompresses the input buffer using the LZNT1 compression format and returns the decompressed data.

Private Member Functions
static uint	RtlGetCompressionWorkSpaceSize (ushort CompressionFormat, out uint pNeededBufferSize, out uint Unknown)
	Retrieves the size of the workspace required for compression.

static uint	RtlDecompressBuffer (ushort CompressionFormat, byte[] UncompressedBuffer, int UncompressedBufferSize, byte[] CompressedBuffer, int CompressedBufferSize, out int FinalUncompressedSize)
	Decompresses a buffer using the specified compression format and returns the decompressed data.

static uint	RtlCompressBuffer (ushort CompressionFormat, byte[] SourceBuffer, int SourceBufferLength, byte[] DestinationBuffer, int DestinationBufferLength, uint Unknown, out int pDestinationSize, IntPtr WorkspaceBuffer)
	Compresses the input buffer using the specified compression format and returns the compressed data in the destination buffer.

static IntPtr	LocalAlloc (int uFlags, IntPtr sizetdwBytes)
	Allocates the specified number of bytes in the local heap and returns a pointer to the allocated memory.

static IntPtr	LocalFree (IntPtr hMem)
	Frees the memory block allocated by LocalAlloc and LocalReAlloc and invalidates the handle.

Static Private Attributes
const ushort	COMPRESSION_FORMAT_LZNT1 = 2

const ushort	COMPRESSION_ENGINE_MAXIMUM = 0x100

Member Function Documentation

◆ Compress()

static byte[] xeno_rat_server.Compression.Compress ( byte[] buffer )

inlinestatic

Compresses the input buffer using the LZNT1 compression format and returns the compressed data.

Parameters

buffer The input buffer to be compressed.

Returns: The compressed data in the LZNT1 format.

Exceptions

System.Exception Thrown when the compression process fails.

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◆ Decompress()

static byte[] xeno_rat_server.Compression.Decompress	(	byte[]	buffer,
		int	original_size )

inlinestatic

Decompresses the input buffer using the LZNT1 compression format and returns the decompressed data.

Parameters

buffer	The compressed data to be decompressed.
original_size	The size of the original data before compression.

Returns: The decompressed data as a byte array.

This method decompresses the input buffer using the LZNT1 compression format and returns the decompressed data as a new byte array. The size of the original data before compression must be provided as the original_size parameter.

Exceptions

InvalidOperationException Thrown when the decompression operation fails or the input buffer is invalid.

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◆ LocalAlloc()

static IntPtr xeno_rat_server.Compression.LocalAlloc	(	int	uFlags,
		IntPtr	sizetdwBytes )

private

Allocates the specified number of bytes in the local heap and returns a pointer to the allocated memory.

Parameters

uFlags	The memory allocation attributes. This parameter specifies the allocation and access protection attributes of the memory block.
sizetdwBytes	The size of the memory block, in bytes. If this parameter is zero, the LocalAlloc function allocates a zero-length item and returns a valid pointer.

Returns: A pointer to the newly allocated memory, or IntPtr.Zero if the function fails.

Exceptions

OutOfMemoryException	The LocalAlloc function has insufficient memory to satisfy the request.
ArgumentException	The LocalAlloc function could not allocate the requested number of bytes.

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◆ LocalFree()

static IntPtr xeno_rat_server.Compression.LocalFree ( IntPtr hMem )

private

Frees the memory block allocated by LocalAlloc and LocalReAlloc and invalidates the handle.

Parameters

hMem	A handle to the local memory object.

Returns: If the function succeeds, the return value is NULL. If the function fails, the return value is equal to a handle to the local memory object. To get extended error information, call GetLastError.

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◆ RtlCompressBuffer()

static uint xeno_rat_server.Compression.RtlCompressBuffer	(	ushort	CompressionFormat,
		byte[]	SourceBuffer,
		int	SourceBufferLength,
		byte[]	DestinationBuffer,
		int	DestinationBufferLength,
		uint	Unknown,
		out int	pDestinationSize,
		IntPtr	WorkspaceBuffer )

private

Compresses the input buffer using the specified compression format and returns the compressed data in the destination buffer.

Parameters

CompressionFormat	The compression format to be used.
SourceBuffer	The input buffer to be compressed.
SourceBufferLength	The length of the input buffer.
DestinationBuffer	The buffer to store the compressed data.
DestinationBufferLength	The length of the destination buffer.
Unknown	Unknown parameter.
pDestinationSize	The size of the compressed data in the destination buffer.
WorkspaceBuffer	Workspace buffer for compression.

Returns: The status of the compression operation.

This method compresses the input buffer using the specified compression format and stores the compressed data in the destination buffer. The compression process modifies the original data in place.

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◆ RtlDecompressBuffer()

static uint xeno_rat_server.Compression.RtlDecompressBuffer	(	ushort	CompressionFormat,
		byte[]	UncompressedBuffer,
		int	UncompressedBufferSize,
		byte[]	CompressedBuffer,
		int	CompressedBufferSize,
		out int	FinalUncompressedSize )

private

Decompresses a buffer using the specified compression format and returns the decompressed data.

Parameters

CompressionFormat	The compression format used for the input buffer.
UncompressedBuffer	The buffer containing the uncompressed data.
UncompressedBufferSize	The size of the uncompressed data buffer.
CompressedBuffer	The buffer containing the compressed data to be decompressed.
CompressedBufferSize	The size of the compressed data buffer.
FinalUncompressedSize	When this method returns, contains the size of the decompressed data.

Returns: The status of the decompression operation. Zero indicates success; otherwise, an error occurred.

This method decompresses the data in the input buffer CompressedBuffer using the specified compression format CompressionFormat . The decompressed data is stored in the output buffer UncompressedBuffer . The size of the decompressed data is stored in the output parameter FinalUncompressedSize .

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◆ RtlGetCompressionWorkSpaceSize()

static uint xeno_rat_server.Compression.RtlGetCompressionWorkSpaceSize	(	ushort	CompressionFormat,
		out uint	pNeededBufferSize,
		out uint	Unknown )

private

Retrieves the size of the workspace required for compression.

Parameters

CompressionFormat	The compression format.
pNeededBufferSize	Receives the size of the workspace required for compression.
Unknown	Receives an unknown value.

Returns: The status of the operation.

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Member Data Documentation

◆ COMPRESSION_ENGINE_MAXIMUM

const ushort xeno_rat_server.Compression.COMPRESSION_ENGINE_MAXIMUM = 0x100

staticprivate

◆ COMPRESSION_FORMAT_LZNT1

const ushort xeno_rat_server.Compression.COMPRESSION_FORMAT_LZNT1 = 2

staticprivate

The documentation for this class was generated from the following file:

/Users/sumansaurabh/Documents/my-startup/xeno-rat/xeno rat server/Compression.cs

Static Public Member Functions

Private Member Functions

Static Private Attributes

Member Function Documentation

◆ Compress()

◆ Decompress()

◆ LocalAlloc()

◆ LocalFree()

◆ RtlCompressBuffer()

◆ RtlDecompressBuffer()

◆ RtlGetCompressionWorkSpaceSize()

Member Data Documentation

◆ COMPRESSION_ENGINE_MAXIMUM

◆ COMPRESSION_FORMAT_LZNT1