5268ac routers

[drsnooker]

I figured I'd add to this now evolving howto guide into attacking (and fail so far) a default password document for those of you using windows. I spend a lot of time getting openSSL to work in visual studio C++ so you won't have to make the same mistakes.
First the installation and compilation is described in this youtube video. 
install youtube guide for openSSL
But you'll see he has a hard time at the end of the video finding a working example of the implementation compatible with the latest revision.

#include <cstdio>
#include <string>
#include <iostream>
#include <stdio.h>

#include <openssl/md5.h>
#pragma warning(disable : 4996)

void main{
unsigned char digest[MD5_DIGEST_LENGTH];
string md5_text="hello world";
test_string = md5_text.c_str();
MD5((unsigned char*)test_string, strlen(test_string), (unsigned char*)&digest);
cout << int(digest[0]) << ' ' << int(digest[1]) << endl;
}

*note to lack of "&" in front of the test_string in the MD5 call. The &test_string shows up in a lot of examples and really screws things up, so don't do it!
Also this implementation allows you to change the length of MD5_text without the compiler yelling at you which is helpful to try different guesses.


#include <openssl/sha.h>

void main {
unsigned char digest[SHA_DIGEST_LENGTH];
string sha1_text="hello world";
test_string = sha1_text.c_str();
SHA1((unsigned char*)test_string, strlen(test_string), (unsigned char*)&digest);
cout << int(digest[0]) << ' ' << int(digest[1]) << endl;
}

That still won't work without the windows SDK installed and you'll have to link additional libraries from the SDK.
linker/input/additional dependencies (for the x64 debug and release)
Program Files\Microsoft SDKs\Windows\v7.1\Lib\x64\Crypt32.Lib
Program Files\Microsoft SDKs\Windows\v7.1\Lib\x64\WS2_32.Lib


Although the openSSL MD5 implementation is faster than anything I found online, I did find a faster SHA1 version
So it took a lot of work to get openSSL SHA1 to actually work, I was better of with the stand alone version. Live and learn.