README.md

Learning assembly language can be beneficial for several reasons:

• Understanding how computers work: Assembly language is a low-level programming language that provides a direct interface to the computer hardware. By learning assembly language, you can gain a deeper understanding of how computers work, how the processor executes instructions, how memory is managed, and how input/output operations are performed.

• Performance optimization: Assembly language programs can be highly optimized for performance since they allow programmers to write code that executes directly on the hardware. By using assembly language, you can create programs that run faster and consume fewer system resources than programs written in higher-level languages.

• Reverse engineering: Assembly language is often used for reverse engineering, which involves analyzing the machine code of a program to understand how it works. By learning assembly language, you can analyze and modify binary code, disassemble executable files, and debug low-level code.

• Embedded systems: Assembly language is commonly used in embedded systems, which are small computer systems built into other devices such as appliances, cars, and medical equipment. By learning assembly language, you can write code for embedded systems that interact directly with the hardware and optimize the system's performance.

• Legacy code: Assembly language is still used in some legacy systems and applications that were written several decades ago. By learning assembly language, you can maintain and modify these systems and applications, which may still be in use today.

NUMBER SYSTEM

• Decimal(Base 10) :
• Binary(Base 2) :
• Hexidecimal(Base 16) :

REPRESENTING INTEGER

• SIGNED: represent both postive and negative number
• UNSIGNED: represent positive numbers starting from 0

REPRESEBTING CHARACTERS USING ASCII

ASCII provides 128 characters

Decimal	Hexadecimal	Character	Description
0	00	NUL	Null
1	01	SOH	Start of Header
2	02	STX	Start of Text
3	03	ETX	End of Text
4	04	EOT	End of Transmission
5	05	ENQ	Enquiry
6	06	ACK	Acknowledgment
7	07	BEL	Bell
8	08	BS	Backspace
9	09	HT	Horizontal Tab
10	0A	LF	Line Feed
11	0B	VT	Vertical Tab
12	0C	FF	Form Feed
13	0D	CR	Carriage Return
14	0E	SO	Shift Out
15	0F	SI	Shift In
16	10	DLE	Data Link Escape
17	11	DC1	Device Control 1
18	12	DC2	Device Control 2
19	13	DC3	Device Control 3
20	14	DC4	Device Control 4
21	15	NAK	Negative Acknowledgment
22	16	SYN	Synchronous Idle
23	17	ETB	End of Transmission Block
24	18	CAN	Cancel
25	19	EM	End of Medium
26	1A	SUB	Substitute
27	1B	ESC	Escape
28	1C	FS	File Separator
29	1D	GS	Group Separator
30	1E	RS	Record Separator
31	1F	US	Unit Separator
32	20	(space)	Space
33	21	!	Exclamation Mark
34	22	"	Double Quote
35	23	#	Number Sign
36	24	$	Dollar Sign
37	25	%	Percent Sign
38	26	&	Ampersand
39	27	'	Single Quote
40	28	(	Left Parenthesis
41	29	)	Right Parenthesis
42	2A	*	Asterisk
43	2B	+	Plus Sign
44	2C	,	Comma
45	2D	-	Hyphen
46	2E	.	Period
47	2F	/	Slash
48	30	0	Digit Zero
49	31	1	Digit One
50	32	2	Digit Two
51	33	3	Digit Three
52	34	4	Digit Four
53	35	5	Digit Five
54	36	6	Digit Six
55	37	7	Digit Seven
56	38	8	Digit Eight
57	39	9	Digit Nine
58	3A	:	Colon
59	3B	;	Semicolon
60	3C	<	Less Than
61	3D	=	Equals Sign
62	3E	>	Greater Than
63	3F	?	Question Mark
64	40	@	At Sign
65	41	A	Uppercase A
66	42	B	Uppercase B
67	43	C	Uppercase C
68	44	D	Uppercase D
69	45	E	Uppercase E
70	46	F	Uppercase F
71	47	G	Uppercase G
72	48	H	Uppercase H
73	49	I	Uppercase I
74	4A	J	Uppercase J
75	4B	K	Uppercase K
76	4C	L	Uppercase L
77	4D	M	Uppercase M
78	4E	N	Uppercase N
79	4F	O	Uppercase O
80	50	P	Uppercase P
81	51	Q	Uppercase Q
82	52	R	Uppercase R
83	53	S	Uppercase S
84	54	T	Uppercase T
85	55	U	Uppercase U
86	56	V	Uppercase V
87	57	W	Uppercase W
88	58	X	Uppercase X
89	59	Y	Uppercase Y
90	5A	Z	Uppercase Z
91	5B	[	Left Square Bracket
92	5C	\	Backslash
93	5D	]	Right Square Bracket
94	5E	^	Caret
95	5F	_	Underscore
96	60	`	Grave Accent
97	61	a	Lowercase a
98	62	b	Lowercase b
99	63	c	Lowercase c
100	64	d	Lowercase d
101	65	e	Lowercase e
102	66	f	Lowercase f
103	67	g	Lowercase g
104	68	h	Lowercase h
105	69	i	Lowercase i
106	6A	j	Lowercase j
107	6B	k	Lowercase k
108	6C	l	Lowercase l
109	6D	m	Lowercase m
110	6E	n	Lowercase n
111	6F	o	Lowercase o
112	70	p	Lowercase p
113	71	q	Lowercase q
114	72	r	Lowercase r
115	73	s	Lowercase s
116	74	t	Lowercase t
117	75	u	Lowercase u
118	76	v	Lowercase v
119	77	w	Lowercase w
120	78	x	Lowercase x
121	79	y	Lowercase y
122	7A	z	Lowercase z
123	7B	{	Left Curly Brace
124	7C	|	Vertical Bar
125	7D	}	Right Curly Brace
126	7E	~	Tilde
127	7F	DEL	Delete

ASSEMBLER

Is a program that converts assembly language code to machine code which the CPU can understand.

BASIC'S OF LINKING PROCESS

• Write assembly code and save it as source files
• Assembler reads the source file and translet it to an object file
• Linker reads the oject file and see if our program reference any code outside our program and like all the specific moduel and finally generate an executable file.

BASIC CODE STRUCTURE

%include "io64.inc"

section .text
global CMAIN
CMAIN:
	;write your code here
	xor rax, rax
	ret

Curiculum

Level 1: Introduction to Assembly Programming

Introduction to Computer Architecture:

Basic concepts of computer organization and architecture Understanding the CPU, memory, registers, and the instruction set Assembly Language Fundamentals:

Overview of assembly language and its role in programming Understanding the structure of assembly instructions Introduction to registers, memory addressing modes, and data types Assembler and Tools:

Setting up the development environment (assembler, emulator, debugger) Familiarizing yourself with the tools and their usage Basic Assembly Instructions:

Learning the basic arithmetic and logical instructions Performing simple calculations using assembly language Using branching and conditional instructions Memory Operations:

Manipulating data in memory Reading and writing from/to memory locations Working with arrays and strings

Level 2: Intermediate Assembly Programming

Stack and Subroutines:

Understanding the stack and its usage in assembly programming Implementing subroutines and function calls Parameter passing and return values Bit-Level Operations:

Manipulating individual bits in registers and memory Performing bitwise logical operations Using shifts and rotates for bit manipulation Interrupts and Interrupt Handling:

Introduction to interrupts and their role in assembly programming Writing interrupt service routines (ISRs) Handling interrupts and implementing interrupt-driven programs Input/Output Operations:

Interfacing with peripherals and devices Reading from and writing to I/O ports Writing device drivers and I/O routines

Level 3: Advanced Assembly Programming

Advanced Data Structures:

Implementing complex data structures in assembly language Working with linked lists, stacks, queues, and trees Optimization Techniques:

Performance optimization in assembly programming Writing efficient code and reducing execution time Compiler optimizations and their impact on assembly code Memory Management:

Memory allocation and deallocation in assembly language Implementing dynamic memory allocation algorithms Understanding memory segmentation and paging Assembly Language for Specific Architectures:

Exploring assembly language variations for different processors (e.g., x86, ARM) Understanding architecture-specific features and instructions

Level 4: Mastery and Advanced Topics

Advanced Instruction Set Architecture:

Exploring advanced instructions and addressing modes SIMD (Single Instruction, Multiple Data) instructions Floating-point operations and vector processing Reverse Engineering and Exploitation:

Introduction to reverse engineering and assembly code analysis Understanding common vulnerabilities and exploits Exploiting software vulnerabilities using assembly programming Operating System Internals:

Exploring assembly code related to operating systems Understanding context switching, system calls, and interrupt handling in the OS kernel Writing OS-specific assembly code and drivers Real-world Projects:

Implementing real-world projects using assembly language Examples could include developing an embedded system, creating a custom bootloader, or optimizing critical performance components