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Cool dude.. 🤓
You also made me remember a case when a grumpy teacher in my university took attendance in excel sheets😂😂 present in the flash drive he brought with him... So I wrote a vbscript which changes the values of attendance column-till the total adds up to ~ 75 %, whenever he plugs in his drive into the classroom's computer :p - worked well for few weeks while I was sleeping in my room - till the teacher noticed that I wasn't coming to class and still my attendance % was never dropped - he called me - I got shit scared - but on contrary, in a calm voice he said me to just attend his classes - next day I went to his class, saw him talking attendance on a piece of paper 😂😂😂😂 -
Yeah, this is an advantage of VM languages such as C# and Java, as they leave enough information to be able to decompile code back. There is even an online decompiler for this: https://www.decompiler.com/. This is unfortunately not the case for languages like C or C++.
How do you even come up with shit like this?
I found such a treasure today in the production code.
The first time I decided to hack around a bit:D
One of my teachers made a quiz software, which is only used by him(his lectures are about databases), and it is highly unsecure. When I heard that it is written in C# I decided to look in it's source code. The biggest problem I ran into: this program is only available on the computers in his classroom, and he monitors the computers display. However, I successfully put it into my pendrive without getting caught.
So when I got home, I just had to use a .NET decompiler(in this case: dotPeek) to get the fully functional source code. The basic function of the program was to download a quiz from his database server, and when it was finished, grade it client-side. Than, I realized how bad it was: It contains the number of questions, the number of correct and incorrect answers.
I've just made a modified .exe, which contained really little modification(like correctAnswers=maxQuestions, incorrectAnswers=0). Everything looks the same, you just have to click over it, and everytime it will return with 100%.
And the bonus: The program connects to the database as a user with root access, and without password. I was able to log in, download(dropping was available too, but didn't try) databases(with all the answers) and so on.
Never had to use it though, it was just a sort-of experience gaining.:)
undefined
badlywritten
c#
justtryatleast