Created by Daniel Pistelli, a freeware suite of tools including a PE editor called CFF Explorer and a process viewer. The PE editor has full support for PE32/64. Special fields description and modification (.NET supported), utilities, rebuilder, hex editor, import adder, signature scanner, signature manager, extension support, scripting, disassembler, dependency walker etc. First PE editor with support for .NET internal structures. Resource Editor (Windows Vista icons supported) capable of handling .NET manifest resources. The suite is available for x86 and x64.

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PEiD is an intuitive application that relies on its user-friendly interface to detect packers, cryptors and compilers found in PE executable files – its detection rate is higher than that of other similar tools since the app packs more than 600 different signatures in PE files.

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IDA is the Interactive DisAssembler: the world’s smartest and most feature-full disassembler, which many software security specialists are familiar with.
Written entirely in C++, IDA runs on the three major operating systems: Microsoft Windows, Mac OS X, and Linux.
IDA is also the solid foundation on which our second product, the Hex-Rays decompiler, is built.
The unique Hex-Rays decompiler delivers on the promise of high level representation of binary executables. It can handle real world code. It is real.

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OllyDbg is a 32-bit assembler level analysing debugger for Microsoft® Windows®. Emphasis on binary code analysis makes it particularly useful in cases where source is unavailable. OllyDbg is a shareware, but you can download and use it for free. Special highlights are:

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