--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/helpers.py	Thu Oct 14 21:42:10 2021 +0200
@@ -0,0 +1,18 @@
+def read_bytes(file, number_of_bytes, bytes_order='backward'):
+    """
+    Read bytes from buffer
+    :param file: <class '_io.BufferedReader'>, required
+    :param number_of_bytes: int, required
+    :param bytes_order: string, 'backward' or 'forward', required
+    :return: string
+    """
+
+    # More info about bytes order: https://en.wikipedia.org/wiki/Endianness
+
+    b = file.read(number_of_bytes)
+    if bytes_order == 'backward':
+        b = b[::-1]
+
+    b = b.hex().upper()
+
+    return b