if the extenion is exe? Yeah, no offense bro but you can spoof extensions and make the file so it looks like a jpg or smg else (i mean EVEN if extensions are shown)
Windows Explorer always see it as an "Application", it works as intended but the extension seen is jpg. Your just have to put a special character ...
To answer OP : When the target uses an interpreted langage , there are software you can use to display it as source code (its only interpretations of the bytecode btw) : SAE or Reflector for .Net Programs, jdgui for Java stuff.
When the target is an Autoit shit, there are also decompilers.
Otherwise, for most of the targets (non .NET) i would say.... IDA for static analysis or any ring0 debugger (take ring0 as "no driver needed") but.... you will deal with ASM instructions, and will be lost. For sure !
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IAmDM : C++ ? Since he wants to analyze binaries without their source i dont think its relevant. Having basic programming knowledge may be needed, for sure, but definitly not a specific langage. For dealing with malwares, ASM and C#, thats all he need.
apf11 is flash projector, updater well... updates the SWF. "Wbclient" does the job.
I think this forum is about rotmg and not RE so you should try anywhere else.
There are plenty of good information sources on the internet about this subject, you just have to avoid many, many kiddies website/forums or HackFagRum.
If you want to reverse programs, try Woodmann .do*****m for it has archived a copy from the old +Fravia Website