Cheat Engine

[kingspades2]

Hey I've finally got my lazy but up and gonna write some stuff about what I know, I hope it helps some people.

Number Systems - A way of representing numbers

Tools
-Calculator(Windows)

Base Name Digits
2 Binary 0 and 1
8 Octal 0 - 7
10 Decimal 0 - 9
16 Hexidecimal 0 - 9, A - F

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Registers - Data areas that are physically located on/in the process

Types
- Accumulator - used to hold results from math operations
- EAX
- Base - used to be a base pointer for memory addies (EBX + 4)
- EBX
- Counting - used to perform as a counter for loops
- ECX
- Data - used to help in math operations and to be a pointer
- EDX
- Source Index - designed to act as a pointer source or memory
- ESI
- Destination index - designed to " "
- EDI
- base pointer - used to hold a base addy in a stack
- EBP
- Instruction Pointer - used to help guide program control
- EIP
- Flag - the famous registers, used to hold a state of a process
CF - Carry Flag
PF - Parity Flag
AF - Adjust Flag
ZF - Zero Flag
SF - Sign Flag
DF - Direction Flag
OF - Overflow Flag

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Jump Instructions

Here are some command jump instructions:

JE - Jump short if equal
JMP - Jump near (unconditonal jump)
JAE - Jump if above or equal
JS - Jump short if sign
JB - Jump short if below
JNLE - Jump short if greater
JNGE - Jump short if not greater or equal
JNE - Jump short if not equal

------------------------------------------------------------------------

Opcode Commands

mov - move
push - push onto top of a stack from register
pop - remove from stack and return to register
cmp - compare 2 operands
call - call on....
loop - loop count
loopz/e - loop while zero
loopnz/ne - loop while not zero
lea = load effective address

-----------------------------------------------------------------------

TTTN (How Jumps Compare To Registers)

O (Overflow) OF = 1
NO (No overflow) OF = 0
C/B/NAE (Carry, Below, Not above or equal) CF = 1
NC/NB/AE (No carry, Not below, Above or equal) CF = 0
E/Z (Equal, Zero) ZF = 1
NE/NZ (Not equal, Not zero) ZF = 0
BE/NA (Below or equal, Not above) CF = 1 or ZF = 1
NBE/A (Not below or equal, Above) CF = 0 and ZF = 0
S (Sign) SF = 1
NS (Not sign) SF = 0
P/PE (Parity, Parity even) PF = 1
NP/PO (Not parity, Parity odd) PF = 0
L/NGE (Less than, Not greater than or equal to) SF <> OF
NL/GE (Not less than, Greater than or equal to) SF = OF
LE/NG (Less than or equal to, Not greater than) ZF = 1 or SF <> OF
NLE/G (Not less than or equal to, Greater than) ZF = 0 and SF = OF
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Links

www.asmcommunity.net
www.codeteachers.com
www.en.wikipedia.com
www.google.com

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Credits

Anthony Herbz - Me =], For writing this
Wikpedia - www.en.wikipedia.com
ASM Community Board - For teaching me most things -http://www.asmcommunity.net/board/index.php?action=wiki

Your welcome, I will expand this as I go, MOD's feel free to edit =]

[aznxhavox]

i wouldn't call this a super guide, but a reference is a better title

[kingspades2]

yea, i used it to grasp attention, yes this is however a reference, however i am expanding it

[aznxhavox]

Its nice either way

[Madman]

http://www.jegerlehner.ch/intel/IntelCodeTable.pdf
(another good reference)

[elcucu]

nice job at least is something usefull

[kingspades2]

hey thanks madman i'll look at that, i should add it up in the reference too

[Slingshot377]

Very complete and thorough tutorial. Good job!

[sponge]

[Chi-Tur]

thats pretty nice.. good job

[kingspades2]

updated. added how jumps compare to flags (i.e. - jne to zf), opcode commands, annd some other stuff

[onvoloper]

GJ I'm starting to try n leanr asm so itll be good to have a refernce

[kingspades2]

ah anytime, and ill keep adding more, this is also more of an AA Reference btw...for scripting and such

[random5566]

Nice info. Here are some other links :

(general instructions)
http://www.emu8086.com/assembly_language_tutorial_assembler_reference/8086_instruction_set.html

(math instructions)
http://www.website.masmforum.com/tutorials/fptute/appen1.htm

(all instructions)
http://developer.apple.com/documentation/DeveloperTools/nasm/nasmdocb.html
or
http://alien.dowling.edu/~rohit/nasmdocb.html

Finally I can post url's.