自认实验5(5)和实验5(6)最优参考答案
缘由是:鄙人刚学完第6章,发现官方未放出 实验5后两题的参考。如有不对,请各位高手指出。
实验5(5)assume cs:code
aa segment
db 1,2,3,4,5,6,7,8
aa ends
bb segment
db 1,2,3,4,5,6,7,8
bb ends
cc segment
db 0,0,0,0,0,0,0,0
cc ends
code segment
start: mov ax,aa
mov es,ax
mov ax,bb
mov ss,ax
mov ax,cc
mov ds,ax
sub ax,ax
mov bx,0h
mov cx,8
s: mov al,es:
add al,ss:
mov ,al
inc bx
loop s
over: mov ax,4c00h
int 21h
code ends
end start5(6)assume cs:code
a segment
dw 1,2,3,4,5,6,7,8,9,0ah,0bh,0ch,0dh,0eh,0fh,0ffh
a ends
b segment
dw 0,0,0,0,0,0,0
b ends
code segment
start: mov ax,a
mov ds,ax
mov ax,b
mov ss,ax
mov sp,16
sub bx,bx
mov cx,8
s: push
add bx,2
loop s
over: mov ax,4c00h
int 21h
code ends
end start add bx,2 用inc bx inc bx代替,可以节省一个字节。掌握这个技巧,编写shellcode时非常有用
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