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显示ciscoIOStype-7密码

2019-11-05 01:22:02
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  最近发现有问题的cisco产品简直比有二次解码的NT还多,改了一个小程序显示cisco IOS type-7 密码的,可以在windows环境下编译。
  Code:
  /*
  * descambles cisco IOS type-7 passWords
  * found somewhere on the internet, slightly modified, anonymous@segfault.net
  * modified for Win32 By CoolWolF@gmx.net
  *
  * gcc -Wall -o ciscocrack ciscocrack.c
  * ./ciscocrack 1416130A4C
  *
  * cl ciscocrack.c
  * ciscocrack.exe 1416130A4C
  */
  #include
  #include
  #include
  #include
  #include //remark this line in unix system
  char xlat[] =
  {
   0x64, 0x73, 0x66, 0x64, 0x3b, 0x6b, 0x66, 0x6f,
   0x41, 0x2c, 0x2e, 0x69, 0x79, 0x65, 0x77, 0x72,
   0x6b, 0x6c, 0x64, 0x4a, 0x4b, 0x44, 0x48, 0x53,
   0x55, 0x42
  };
  
  int cdecrypt(char *enc_pw, char *dec_pw)
  {
   unsigned int seed, i, val = 0;
   if(strlen(enc_pw) & 1)
   return(-1);
   seed = (enc_pw[0] - '0') * 10 + enc_pw[1] - '0';
   if (seed > 15 !isdigit(enc_pw[0]) !isdigit(enc_pw[1]))
   return(-1);
   for (i = 2 ; i <= strlen(enc_pw); i++)
   {
   if(i !=2 && !(i & 1))
   {
   dec_pw[i / 2 - 2] = val ^ xlat[seed++];
   val = 0;
   }
   val *= 16;
   if(isdigit(enc_pw[i] = toupper(enc_pw[i])))
   {
   val += enc_pw[i] - '0';
   continue;
   }
   if(enc_pw[i] >= 'A' && enc_pw[i] <= 'F')
   {
   val += enc_pw[i] - 'A' + 10;
   continue;
   }
   if(strlen(enc_pw) != i)
   return(-1);
   }
   dec_pw[++i / 2] = 0;
   return(0);
  }
  void usage()
  {
   fPRintf(stdout, "Usage: ciscocrack
  ");
  }
  int main(int argc, char *argv[])
  {
   char passwd[65];
   memset(passwd, 0, sizeof(passwd));
   if(argc != 2)
   {
   usage();
   exit(1);
   }
   if(cdecrypt(argv[1], passwd))
   {
   fprintf(stderr, "Error.
  ");
   exit(1);
   }
   printf("Passwd: %s
  ", passwd);
   return 0;
  }

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