Moved to WordPress!

Hi there, feel something difference? Yeah, I’m moved to WordPress.

When I was going to move to Drupal, I thought that I want to use some of the cool features in Drupal. It turns out that afterall, I’ve disabled everything in my blog and make it simplistic. So, today while I’m going to blog a new one I can’t finish it because I’m thinking of WordPress. Few hours later my blog is converted.

Since my old blog have no optimization and this one I use static page caching on PPP-linked memcached server, I hope my blog would be twice as fast, or more.

try2hack realistic 6

Well, I got my try2hack account back so I done this and posting the method I used.

First, this mission got an encryptor and message. I think the encryptor is worth looking so I put some silly word in and it output me some set of data. Worthless. So, I think I known that this mission is based by ASCII in a forum post(now lost) so I put a in and a with password. ord(a) = 97. This give me .078.100.016 so it’s 3 set of data. I trying add it up, it got 194. Now the password is 97, 194-97 = 97 OMG!

Wow, that’s was pretty easy. Now try with longer message with some looong password.

Well, I got my try2hack account back so I done this and posting the method I used.

First, this mission got an encryptor and message. I think the encryptor is worth looking so I put some silly word in and it output me some set of data. Worthless. So, I think I known that this mission is based by ASCII in a forum post(now lost) so I put a in and a with password. ord(a) = 97. This give me .078.100.016 so it’s 3 set of data. I trying add it up, it got 194. Now the password is 97, 194-97 = 97 OMG!

Wow, that’s was pretty easy. Now try with longer message with some looong password. I tried aa and password of aa it’s .107.104.080.043.112.136, I separated that to 2 set of data, adding them up and subtracted 97 off, now it get me 194?!? That number was familiar. Yeah, For each password character, subtract that down so I subtracted 97 again and get a. Cool.

Now let’s begin with the message. I tried brute forcing up to 6 character but with no result (or my algorithm was wrong) so I have to think again by statistic. First I though the message is in Thai so I added Thai support for my decoder. (The encoder runs on tis-620, not utf-8 so it’s hard to juggling encoding in Python) I think that the mission description said that it’s “letter” so it must begins with สวัสดี if it’s formal message (try2hack never use formal message, but it’s worth trying) I try to add 114+114+288 then subtracted 161(ก in tis-620) to get the key, this however cause the decoder to fail to converting encodings. So, I try to look at the message, found that it have lot of same character appearing near each other. Maybe it’s newline (20). Why don’t I think this in the first place?

No, it’s not. So I modified my decoder to get the lowest number, because it’s probably newline(20) or space(32). It showing me [CENSORED] is it. I tried subtracting 20 out, resulting in [CENSORED]-10. Yeah, that’s the password. The letter is in English 🙁 Well, the letter was begins with Dear, not สวัสดี and the author’s address was ridiculous!