n! aka Factorial

So i have just finished that mathematic course wich uses the factorial Probabilities and/or Combinations and Permutations (Damn i still don't understand it very well x)) and i have decided to code an asm program that can calculate factorial wait! do you know what is it?! well Factorial is means to multiply a series of descending natural numbers. ( symbol: ! )
For exemple:
1! = 1 why? cuz they had generally agreed that 0! = 1
2! = 2*1 = 2
3! = 3*2*1 = 6  
4! = 4 × 3 × 2 × 1 = 24  
7! = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5040

you wan't more?  

you think they're large see the next ones :) i counted some of themusing calc of wind0ws x)

100! = 9,3326215443944152681699238856267e+157

200! = 7,8865786736479050355236321393219e+374
300! = 3,0605751221644063603537046129727e+614
400! = 6,4034522846623895262347970319503e+868

500! = 1,220136825991110068701238785423e+1134
1000! = 4,02387260077093773543702433923e+2567

2000! = 3,3162750924506332411753933805763e+5735

3000! = 4,1493596034378540855568670930866e+9130

4000! = 1,8288019515140650133147431755739e+12673

5000! = 4,2285779266055435222010642002336e+16325
10000! = 2.8462596809*1035,659
25206! = 1.2057034382*10100,000
100000! = 2.8242294080*10456,573
205023! = 2.5038989317*101,000,004
1000000! = 8.2639316883*105,565,708
1,0248383838*1098! = 101.0000000000*10100
1,0000000000*10100! = 109.9565705518*10101
1,7976931349*10308! = 105.5336665775*10310

amazing x) 

here is the crappy calculator source don't get shocked x):

mov esi,12d
mov ecx,esi
Fact0:
dec ecx
imul esi,ecx
mov edx,esi
mov ebx,edx
xor edx,edx
xor esi,esi
mov esi,ebx
cmp ecx,1
jnz Fact0

PS: at the moment it can only calculate to 12!

and btw if you know some tricks to count large numbers tell me please!

Credits: Wikipedia

RED ARENA

My team mate Xylitol has done a great job when created this website project called RED ARENA which is a contest website so that everybody can share their crackmes and/or keygenmes and also try to solve some other ones ;)

i've coded an easy keygenme which is already in there and has been solved by qpt

rEd ArEnA KeygenMe 1:
PROTECTiON: MD5 + Base64
RATiNG: +3 ( i guess it's easier! ) 

wait for the 2nd ;) i'm coding it right now :)

ViSiT RED ARENA AT: http://bit.ly/feI8F9

now go and solve some challenges :) 

PS: NO SOLUTiONS HERE!

Decrypt This Cipher - Decryption Solution

since no one had tried this i'll just post the solution :)

the cipher is:

110.211.310.211 110.211.110.111.210.111 110.311.410 110.211.110.111.310 110.211.210.111.110.111 110.311.210.111.110

the question is: how much 10 and 11 x)
we have one 10 two 11 three 10 etc...
we'll get this:

101111101010111110111110111010111011111110101010101111101110101010111110101110111011111110101110

this is like the 1st step except that we always add a 1 means: one 1 one 1 one 1 etc...
so all you have to do is to remove them (1x1x1x1x1x1x1x etc...) it's just a matter of lengths :p

011000110110100101110000011010000110010101110010

see how it has become?
yes that's the original encoded binary now all what you have to do is to decode it :) and you'll get the decrypted text which is: cipher
easy isn't :)

qpt's easy keygenme 1 Solution

an easy keygenme with some math instructions no protection or crypto or anything else it's all clean :p

Analyzes:

Decrypt This Cipher

 here is a cipher for you to decrypt :) it's easy just use your brain :D

110.211.310.211 110.211.110.111.210.111 110.311.410 110.211.110.111.310 110.211.210.111.110.111 110.311.210.111.110

Hint: It's a word nothing except a word :]

if you need more hints let me know about it ;)

Edit: i've changed the word and the look too :p so have fun :D

TinyRANDOMiZEr

TinyRANDOMiZEr

Description: this is an example that will show you how to generate random numbers by using GetTickCount and some maths :p

It's Coded in masm32 using Winasm IDE

Download Link:  TinyRANDOMiZEr.Incl.Source.Code.zip

have fun using it :)

ASM Table Maker v0.1a

ASM Table Maker [ATM]
version: 0.1a

This is a tool i've made in masm32 which was inspired from Table Extractor by Thigo

download link: atmv01a.rar

have fun :)