Irregular Expressions:

October, 2012


October 19, 2012  12:21 AM

Hackthissite.org Application Level 5 – Part 2

Dan O'Connor Dan O'Connor Profile: Dan O'Connor

After some a deeper dive, it looks like the switch statements that I set breakpoints on get called with the longer password. With a little more playing I have located the key CMP that needs to be looked at. 00401080 |. 837D E4 10 |CMP DWORD PTR SS:[EBP-1C],10 If you...

October 18, 2012  9:29 PM

Hackthissite.org Application Level 5

Dan O'Connor Dan O'Connor Profile: Dan O'Connor

Time for level 5. When you run application 5 it displays a dos box that prompts for a password. If you look through the file we can see a couple other strings. 00401022 |. 68 30704000 PUSH app5win.00407030 ; ASCII "Please enter the password:" 004010C9 |. 68 4C704000 ...


October 17, 2012  2:30 PM

Hackthissite.org Application Level 4

Dan O'Connor Dan O'Connor Profile: Dan O'Connor

I found this one really annoying, I spent a few hours going around the application and tracing what it was doing. In a few instances I found the calls disabling the focus of the buttons and I was able to disable that part of the app using NOP's but I was not able to click on the button. It...


October 16, 2012  11:14 PM

Hackthissite.org Application Level 3

Dan O'Connor Dan O'Connor Profile: Dan O'Connor

I just got a bit more free time and I wanted to come back to this site and work on a couple more of these challenges. http://www.hackthissite.org/missions/application/ Level 3 is rated easy, along with 1 and 2. ...


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