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   alt.2600.hackers      Pretty sure it ain't about the Atari...      12,449 messages   

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   Message 10,836 of 12,449   
   00420 to All   
   Re: Hacking tools and a lot of questions   
   17 Jun 06 00:14:06   
   
   From: sendpornnotspan@gmail.com   
      
   oh u want to crack a game?   
   hexeditor should do the trick   
      
   The most common software crack is the modification of an application's   
   binary to cause or prevent a specific key branch in the program's execution.   
    This is   
   accomplished by reverse engineering the compiled program code using a   
   debugger such as SoftICE or gdb until the software cracker reaches the   
   subroutine that contains the primary method of protecting the software (or   
   by disassembling an executable file with a program such as IDA). The   
   binary is then modified using the debugger or a hex editor in a manner   
   that replaces a prior branching opcode with its complement or a NOP opcode   
   so the key branch will either always execute a specific subroutine or skip   
   over it. Almost all common software cracks are a variation of this type.   
   Software developers are constantly developing techniques such as code   
   obfuscation, encryption, and self-modifying code to make this modification   
   increasingly difficult.   
      
   Another example is a crack that removes the trial period from shareware or   
    trials making the product function as the full unlocked version. These   
    cracks are usually programs that patch the program executable and   
    sometimes the .dll or .so linked to the application. Similar cracks are   
    available for software that requires a hardware dongle. A company can   
    also break the copy preventions of programs that they have legally   
    purchased but that are licensed to particular hardware, so that there is   
    no risk of downtime due to hardware failure (and, of course, no need to   
    restrict oneself to running the software on bought hardware only).   
      
   ps one of my fav windows programs is "reshack"   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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