Re: Generating shellcode

[woof () droopy 2y net]

How about :
shellcode.asm
-------------
text
global sc
sc:
nop
int $80h

egg.c
-----
unsigned char *ptr;
ptr = (unsigned char *) sc;
printf("\"");
for (i = 0; i < SHELLCODE_LEN; i++)
  printf("\\x%02x", *(ptr + i));
printf("\"\n");


Something like that should produce you a nice (with appropriate 
compilation, linking and other C related stuff). 
"\x90\xcd\x80\x"

sorry for my poor english and lack of information, it's early and
i need to sleep :)


On Sun, May 19, 2002 at 10:29:05AM -0400, Ryn wrote:
> Howdy,
>
> Do any documents exist explaining how to covert assembly op codes and
> operands to hex? I can use "gdb" or "dis" on Solaris to get:
>
> bc 10 20 00        clr          %fp
> e0 03 a0 40        ld           [%sp + 64], %l0
> a2 03 a0 44        add          %sp, 68, %l1
> 9c 23 a0 20        sub          %sp, 32, %sp
> 80 90 00 01        orcc         %g0, %g1, %g0
>
> I want to see how to get column 1 - 4 by hand.
>
> Thanks for any info,
> Ryan