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Programming & patching: How to patch a program

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Uploaded by on Jun 8, 2008

In this video, we'll crack a program (crackme) by a patch which we will program ourselves in the C language.
It will be fun!

Category:

Howto & Style

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License:

Standard YouTube License

  • likes, 3 dislikes

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Uploader Comments (youhakim)

  • this person is awsome!!! bro pls tell me

    did patch.exe made changes in memory or in exe file?

  • In the exe of corse.

  • Sorry for the dubbelpost but i saw it later on :p why you create a char array with the values 144 144 while they both are integers.

  • Because in C, you can specify a charactere by the charactere itself or its equivalent ASCII code which is an integer, and the compiler does the translation for you.

Top Comments

  • yes , he goes fast and he has a lot of pronunciation problems but still i dont find that hard to follow and he has very good insights and explains evrything in a way that is not boring to listen and as pointed out he has awesome skills And ofc you need to have some skills yourself to understand some things , but no knowledge comes magically too you

    tl;dr: he is awesome and has haxors skills and i am pretty drunk

  • GOOD TUTORIAL HAKIM! THANK YOU!

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All Comments (81)

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  • This is great. I may have to play it back a few times, but you did a great job! Google should give you some commission for this one!

  • @youhakim It's the reverse! The compiler does the translation when you use ASCII characters, from the character to its corresponding ASCII code. When you enter a value directly, the compiler simply uses that value.

    BTW: 144 is not a valid ASCII character. ASCII = [0,127], and not a valid char value neither (it will overflow). You should use 'unsigned' modifier for scientific purposes :).

  • any advice on how to crack a computer game?

  • Wtf..

  • erm this software doesn't seem to work on windows 7 x64

  • if ur going to video grow some balls ans speak or go back to jerking off in ur moms basement

  • most indians are hackerrrrrrs ... lol

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