Byte reader

Simple byte reader distributed as an assembly. ByteReaderCLI shows an example usage.

Several functions are available, namely:

public static void PrintBytes(string file, int amount = -1)

Prints bytes in HEX up to amount (if within zero and file length) or file length, whichever comes first.

string filename = @"C:\Windows\System32\notepad.exe"
ByteReader.ByteReader.PrintBytes(filename, 10);

// Output: 4D 5A 90 00 03 00 00 00 04 00

public static bool CheckFileSignature(string file, string signature)

Return true if the signature provided appears exactly at the beginning of the file; false otherwise.

string filename = @"C:\Windows\System32\notepad.exe"
string signature = "4D 5A"  // Signature of an exe
if (ByteReader.ByteReader.CheckFileSignature(filename, signature))
    Console.WriteLine($"Signature {signature} was found");

// Output: Signature 4D 5A was found

public static string ByteArrayToString(byte[] ba, string separator = " ")

Parse a byte[] to a string separating the elements with the specified string.

string filename = @"C:\Windows\System32\notepad.exe"
byte[] ba = ByteReader.ByteReader.GetHexFromFile(filename);
Console.WriteLine(ByteReader.ByteReader.ByteArrayToString(ba, "-"));

// Output: 4D-5A-90-00-03-00-00-00-04-00-...

public static byte[] StringToByteArray(string hex)

Convert a string into a byte[].

string byteString = "4D 5A 90 00 03 00 00 00 04 00";
byte[] ba = ByteReader.ByteReader.StringToByteArray(byteString);

public static void ByteArrayToFile(string fileName, byte[] byteArray)

Write a byte[] to a file of a given name.

string filename = "test.txt";
string byteString = "4D 5A 90 00 03 00 00 00 04 00";
ByteReader.ByteReader.ByteArrayToFile(filename, ByteReader.ByteReader.StringToByteArray(byteString));
ByteReader.ByteReader.PrintBytes(filename);

// Output: 4D 5A 90 00 03 00 00 00 04 00

public static byte[] FileToByteArray(string file)

Return an array containing the bytes of the file.

string filename = @"C:\Windows\System32\notepad.exe"
byte[] ba = ByteReader.ByteReader.GetHexFromFile(filename);