This post is an add-on to the video tutorial I uploaded to the youtube.

See also other posts in the series: Part 1. Round up of the basic HIEW commands used:
Change the color scheme - edit hiew8.ini the last section "Colors", set ColorMain = 0x07 to have the black background.
ESC - To exit any window/mode without saving the changes.
F1 - Context-sensitive help.
F3 Enter the Edit mode.
ENTER In the read mode, switch between Hex/Decode/Text modes.
F7 Open a search window
Ctrl + Enter continue searching.
Alt + F1 Change location addressing mode.
F9 Save the changes.
F6 In Decode/Disassembled mode, find cross-references.
* In Read mode, select block(s) of bytes.
F8 Show the file header.
F8 -> F6 ->F3 In Hex/Decode modes, show then edit file header sections.
Alt + F6 Show all strings in a file.
+/- See above, increase/decrease minimal string lentgh.
F5 Go to offset.
Alt + F7 Change the search direction.
Sample "serial1.exe" program used in the tutorial:
Compiled binary "serial1.exe" Its SHA256 hash (use PowerShell command Get-FileHash "serial1.exe") to verify: 6AC50BCA0044F2DF418B46218358BF1F6D382B881FD87E741EAA8EFF940CD829
The source code (compiled in Microsoft Viual Studio 2015):

#include "stdafx.h"
#include <stdio.h>
#include <string.h>
// this example and all the following will be posted on my site

int main()
	char serial_input[6] = "";
	char serial_correct[6] = "23845";
	int result = 0;
		printf("Please enter the serial of 5 numbers:");
	fgets(serial_input, 6, stdin);
	result = strncmp(serial_input, serial_correct, 5);
		if (result != 0) 
		printf("Wrong serial!, quitting ..\n");
		return 1;
	else { printf("Great, you have the correct serial !\n"); }
    return 0;

keywords: languages, programming, assembly-language, reversing, software-protection