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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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