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Виды работ:
- изучить программу на Ассемблере;
- провести анализ структуры программы;
- провести анализ операторов программы;
- ознакомиться с возможным использованием операторов программного кода.
Задание 1. Проанализировать программу, написанную на ассемблере и добавить комментарии к каждой строчке.
format PE GUI 4.0 entry start
include 'win32a.inc' ID_CAPTION = 101
ID_MESSAGE = 102
ID_ICONERROR = 201
ID_ICONINFORMATION = 202
ID_ICONQUESTION = 203
ID_ICONWARNING = 204
ID_TOPMOST = 301
section '.text' code readable executable start:
invoke GetModuleHandle,0
invoke DialogBoxParam,eax,37,HWND_DESKTOP,DialogProc,0 or eax,eax
jz exit
invoke MessageBox,HWND_DESKTOP,message,caption,[flags] exit:
invoke ExitProcess,0
proc DialogProc hwnddlg,msg,wparam,lparam push ebx esi edi
cmp [msg],WM_INITDIALOG je.wminitdialog
cmp [msg],WM_COMMAND je.wmcommand
cmp [msg],WM_CLOSE je.wmclose
xor eax,eax
jmp.finish
.wminitdialog:
invoke CheckRadioButton,[hwnddlg],ID_ICONERROR,ID_ICONWARNING,ID_ICONINFORMATI ON
jmp.processed
.wmcommand:
cmp [wparam],BN_CLICKED shl 16 + IDCANCEL je.wmclose
cmp [wparam],BN_CLICKED shl 16 + IDOK jne.processed
invoke GetDlgItemText,[hwnddlg],ID_CAPTION,caption,40h invoke GetDlgItemText,[hwnddlg],ID_MESSAGE,message,100h mov [flags],MB_OK
invoke IsDlgButtonChecked,[hwnddlg],ID_ICONERROR cmp eax,BST_CHECKED
jne.iconerror_ok
or [flags],MB_ICONERROR
.iconerror_ok:
invoke IsDlgButtonChecked,[hwnddlg],ID_ICONINFORMATION cmp eax,BST_CHECKED
jne.iconinformation_ok
or [flags],MB_ICONINFORMATION
.iconinformation_ok:
invoke IsDlgButtonChecked,[hwnddlg],ID_ICONQUESTION cmp eax,BST_CHECKED
jne.iconquestion_ok
or [flags],MB_ICONQUESTION
.iconquestion_ok:
invoke IsDlgButtonChecked,[hwnddlg],ID_ICONWARNING cmp eax,BST_CHECKED
jne.iconwarning_ok
or [flags],MB_ICONWARNING
.iconwarning_ok:
invoke IsDlgButtonChecked,[hwnddlg],ID_TOPMOST cmp eax,BST_CHECKED
jne.topmost_ok
or [flags],MB_TOPMOST
.topmost_ok:
invoke EndDialog,[hwnddlg],1 jmp.processed
.wmclose:
invoke EndDialog,[hwnddlg],0
.processed:
mov eax,1
.finish:
pop edi esi ebx ret
endp
section '.bss' readable writeable flags dd?
caption rb 40h
message rb 100h
section '.idata' import data readable writeable library kernel,'KERNEL32.DLL',\
user,'USER32.DLL'
import kernel,\ GetModuleHandle,'GetModuleHandleA',\ ExitProcess,'ExitProcess'
import user,\
DialogBoxParam,'DialogBoxParamA',\ CheckRadioButton,'CheckRadioButton',\ GetDlgItemText,'GetDlgItemTextA',\ IsDlgButtonChecked,'IsDlgButtonChecked',\ MessageBox,'MessageBoxA',\ EndDialog,'EndDialog'
section '.rsrc' resource data readable directory RT_DIALOG,dialogs resource dialogs,\
37,LANG_ENGLISH+SUBLANG_DEFAULT,demonstration
dialog demonstration,'Create message box',70,70,190,175,WS_CAPTION+WS_POPUP+WS_SYSMENU+DS_MODALFRAME
dialogitem 'STATIC','&Caption:',-1,10,10,70,8,WS_VISIBLE dialogitem
'EDIT','',ID_CAPTION,10,20,170,13,WS_VISIBLE+WS_BORDER+WS_TABSTOP
dialogitem 'STATIC','&Message:',-1,10,40,70,8,WS_VISIBLE dialogitem
'EDIT','',ID_MESSAGE,10,50,170,13,WS_VISIBLE+WS_BORDER+WS_TABSTOP+ES_AU TOHSCROLL
dialogitem 'BUTTON','&Icon',-1,10,70,80,70,WS_VISIBLE+BS_GROUPBOX
dialogitem 'BUTTON','&Error',ID_ICONERROR,20,82,60,13,WS_VISIBLE+BS_AUTORADIOBUTTON
+WS_TABSTOP+WS_GROUP
dialogitem 'BUTTON','I&nformation',ID_ICONINFORMATION,20,95,60,13,WS_VISIBLE+BS_AUTOR ADIOBUTTON
dialogitem 'BUTTON','&Question',ID_ICONQUESTION,20,108,60,13,WS_VISIBLE+BS_AUTORADIO BUTTON
dialogitem 'BUTTON','&Warning',ID_ICONWARNING,20,121,60,13,WS_VISIBLE+BS_AUTORADIOB UTTON
dialogitem 'BUTTON','&Style',-1,100,70,80,70,WS_VISIBLE+BS_GROUPBOX
dialogitem 'BUTTON','&Top most',ID_TOPMOST,110,82,60,13,WS_VISIBLE+WS_TABSTOP+BS_AUTOCHECKBOX
dialogitem 'BUTTON','OK',IDOK,85,150,45,15,WS_VISIBLE+WS_TABSTOP+BS_DEFPUSHBUTTON
dialogitem 'BUTTON','C&ancel',IDCANCEL,135,150,45,15,WS_VISIBLE+WS_TABSTOP+BS_PUSHB UTTON
enddialog
Задание 2. Оформить отчет.
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