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|
format PE console 5.0
include 'include/windows/win32a.inc'
;--------------------------------------------------
section '.text' code readable writeable executable
;--------------------------------------------------
entry $
mov edi,texte
call strlen
mov [texte_len],ecx
begin:
mov esi,mod_addr
mov ebp,mod_addr_len
xor dl,dl
not dl
@@:
inc dl
inc ebp
add esi,4
cmp bl,dl
jnz @b
mov esi,[esi]
mov edi,y1
xor ecx,ecx
mov cl,12 ;Padding de la zone afin d'éviter
mov al,0x90 ;des bytes restant de précédantes
repnz stosb ;instructions.
sub edi,12
mov cl,byte [ebp]
repnz movsb ;Injection d'un des "mod(nbr)".
mov esi,texte
mov edi,txtbuf
mov ecx,[texte_len]
@re:
mov dl,4
@@:
mov al,[esi]
inc esi
ror eax,8
dec dl
jnz @b
y1:
rd 3 ;Zone d'injection des "mod(nbr)".
mov [edi],eax
add edi,4
sub ecx,4
jnz @re
push ebx
cinvoke printf,forms,txtbuf
cinvoke puts,crlf
invoke Sleep,1000
pop ebx
z1: ;Gestion de la fonction:
inc bl ;"modifier db 0,1,2,3,4,5,4,3,2,1,0"
z2: ;par un "inc/dec bl" automodifiant.
cmp bl,5
jnz z3
mov edi,z1
mov ax,0xCBFE ;"dec bl" opcode.
cmp bl,5
jz @f
sub ah,8 ;Modificateur d'opcode en "inc bl".
@@:
stosw ;Storage de l'opcode à "z1".
mov esi,z2
mov ax,0xFB80 ;"cmp bl" opcode.
stosw ;Storage de l'opcode à "z2".
xor al,al ;"0" opcode suite.
cmp bl,5
jz @f
add al,5 ;"5" opcode suite.
@@:
stosb ;Storage à "z2" de la suite de
z3: ;l'opcode "cmp bl" donc 5 ou 0.
dec [nbrloop]
jnz begin
invoke ExitProcess,0
strlen:
xor ecx,ecx
xor al,al
@@:
inc edi
inc ecx
cmp byte [edi],al
jnz @b
ret
;-[Data]------------------------------------------------------------------
txtbuf rb 1024
texte db 'A table is a form of furniture with a flat horizontal upper surface used to support objects of interest, for storage, show, and/or manipulation. The surface must be held stable; for reasons of simplicity, this is usually done by support from below by either a column, a "base", or at least three columnar "stands". In special situations, table surfaces may be supported from a nearby wall, or suspended from above. wikipedia',0
texte_len dd 0
mod_addr dd 0,0,mod1,mod2,mod3,mod4,mod5 ;adresse opcode
mod_addr_len db 0,0,4,4,8,8,12 ;longueur opcode
mod1 dd 0x08C0C166 ;rol ax,8
mod2 dd 0x9010C0C1 ;rol eax,16
mod3 dd 0x08C0C166,0x9010C0C1 ;mix
mod4 dd 0x9010C0C1,0x08C0C166 ;mix
mod5 dd 0x08C0C166,0x9010C0C1,0x08C0C166 ;mix
nbrloop db 11
crlf db 13,10,0
forms db '%s',10,0
;-[Import]----------------------------------------------------------------
data import
library kernel32,'kernel32.dll',\
msvcrt,'msvcrt.dll',\
user32,'user32.dll',\
wsock32,'ws2_32.dll'
include 'include/windows/api/kernel32.inc'
include 'include/windows/api/user32.inc'
include 'include/windows/api/wsock32.inc'
import msvcrt,\
printf,'printf',\
puts,'puts'
end data |
