String searches (was "HELP &#8470;2 ))))")

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labron

Joined: 28 Aug 2013
Posts: 8

labron 31 Aug 2013, 00:11

how to compare each element
string >dd< 123413241341234
with ASCII necessary to me code?

31 Aug 2013, 00:11

AsmGuru62

Joined: 28 Jan 2004
Posts: 1617
Location: Toronto, Canada

AsmGuru62 31 Aug 2013, 03:16

I do not understand your question.
You want to search for some small text inside larger text (a sub-string)?

31 Aug 2013, 03:16

labron

Joined: 28 Aug 2013
Posts: 8

labron 04 Sep 2013, 04:25

Code:

format pe gui 4.0
entry start
include 'win32ax.inc'

proc start
mov ecx,0
Start_pars:
cmp ecx,[len_string]
je Stop_pars
cmp [string+ecx],53
je Good_pars
add ecx,4
jmp Start_pars



Stop_pars:
invoke MessageBox,0,"Stop","Stop",0
invoke ExitProcess,0
Good_pars:
invoke MessageBox,0,"good","53",0
invoke ExitProcess,0
endp

string dd 11,22,11,22,22,33,44,33,22,66,34,23,54,34,23,44,11,22,11,22,22,33,44,33,22,66,34,23,54,34,23,44,54
len_string = $ - string
i dd ?



data import
library kernel32, 'KERNEL32.DLL',\
        user32,   'USER32.DLL'
import kernel32,\
       ExitProcess, 'ExitProcess'
import user32,\
       MessageBox, 'MessageBoxA'
end data

dont work

((

04 Sep 2013, 04:25

bitRAKE

Joined: 21 Jul 2003
Posts: 4016
Location: vpcmpistri

bitRAKE 04 Sep 2013, 06:59

Code:

format pe gui 4.0
entry start
include 'win32ax.inc'

proc start
mov ecx,0
Start_pars:
cmp ecx,[len_string]
je Stop_pars
cmp [string+ecx],53
je Good_pars
add ecx,4
jmp Start_pars



Stop_pars:
invoke MessageBox,0,"Stop","Stop",0
invoke ExitProcess,0
Good_pars:
invoke MessageBox,0,"good","53",0
invoke ExitProcess,0
endp

string dd 11,22,11,22,22,33,44,33,22,66,34,23,54,34,23,44,11,22,11,22,22,33,44,33,22,66,34,23,54,34,23,44,54

len_string dd $ - string



data import
library kernel32, 'KERNEL32.DLL',\
        user32,   'USER32.DLL'
import kernel32,\
       ExitProcess, 'ExitProcess'
import user32,\
       MessageBox, 'MessageBoxA'
end data

Maybe above work?

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04 Sep 2013, 06:59

DOS386

Joined: 08 Dec 2006
Posts: 1900

DOS386 10 Sep 2013, 08:56

labron

Welcome to the FASM forum ... please use descriptive subjects (not HELP HELP HELP HELP ) and code tags (I edited and fixed your 2 posts here)

10 Sep 2013, 08:56

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