nop
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NOP 1.0
NOP is a recursive acronym for NOP Obfuscated Programming. more>> NOP is a recursive acronym for NOP Obfuscated Programming. Program obfuscation involves a number of techniques whose objective is to avoid reverse engineering of applications by hackers, including well-intentioned ones. NOP automatically applies one such technique to Delphi Object Pascal programs: inserting random NOP machine instructions into source code.
The hardware instruction NOP of Intel microprocessors and compatibles occupies 1 byte (hex 90) and takes 3 processor cycles. It doesnt do anything. For a moderately fast 3GHz machine, 1 billion NOPs would execute in 1 second. Compilers generate NOPs in order to align code and data according to word boundaries. The NOP program inserts a random series of NOP instructions all over the code, so that one version of an application is intentionally misaligned with respect to the next.
If you apply this program to your source code, then, for each compilation, the address of sensitive routines changes randomly. By regularly using NOP and uploading the result, your application becomes a moving target for crackers: one day, the bad guy cracks your code and delivers a patch, the next, the patch doesnt work any more.
There is a lot more to obfuscation then just NOPping. Delphi executables carry Run-Time Type Information (RTTI): the source name of classes, procedures, functions, units, form structure, etc. So, if you write a procedure called Validate_Password, its very name is an invitation for crackers using a decompiler, such as the infamous DeDe (Delphi Decompiler). Strings, too, provide precious information: for example, the message Invalid password clearly indicates where even mediocre crackers should place their NOPs.
NOP is freeware. It is the precursor of a more sophisticated shareware obfuscator, called AltDel, by the same author.<<less
Download (784KB)
Added: 2008-08-07 License: Freeware Price: Free
457 downloads
StripMDL 4.0
StripMDL is a small Utility to remove all the Rocket, Bomb and Droptank references from the Default CFS1 Aircraft more>>
StripMDL is a small Utility to remove all the Rocket, Bomb and Droptank references from the Default CFS1 Aircraft so they can be used in CFS2 without the old objects appearing alongside the new CFS2 Payloads.
This program lets you select individual MDL files and it will scan the file and check for any code that calls the Objects.
All references found will be listed.
If the "Convert" button is pressed then all Rocket, Bomb and Droptank calls will be replaced with NOP.
<<lessThis program lets you select individual MDL files and it will scan the file and check for any code that calls the Objects.
All references found will be listed.
If the "Convert" button is pressed then all Rocket, Bomb and Droptank calls will be replaced with NOP.
Download (175KB)
Added: 2006-10-27 License: Freeware Price:
1102 downloads
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