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30 votes

How do I acquire SoftICE?

After buying NuMega technologies in 1997, Compuware seemed to feel that SoftICE was a liability, both technically and legally (as the #1 hacker tool of the time), and that may have played into why ...
  • 401
19 votes

What is a good Java decompiler and deobfuscator?

Old and Lacking Entries JAD Some time ago, everyone’s decompiler of choice was jad. Currently, the project is dead (in addition, it wasn’t open source), but still you see a lot of people referring to ...
15 votes

how can I diff two x86 binaries at assembly code level?

There are various great alternatives here. However, all of them seem to be unmaintained. The tool I recommend you is Diaphora https://github.com/joxeankoret/diaphora (Disclaimer: I'm the author). Is a ...
  • 4,395
14 votes

Is there any disassembler to rival IDA Pro?

Relyze is a commercial interactive disassembler for x86, x64 and ARM software with loaders for PE or ELF file formats. It supports interactive flat and graph views of the disassembly, generating call ...
  • 2,531
12 votes
Accepted

What is the meaning of single letters in IDA's functions window?

Every column value can be either a dot or the same column character. Those columns are boolean and the column character stands for "True" while the dot stands for "False". R stands for "Returns" and ...
  • 11.6k
10 votes

Is there any disassembler to rival IDA Pro?

Just for completeness: one more disassembler, Binary Ninja: As for now (9/26/2016) it has the following properties: Commercial ($99 as introductory price for personal use license) Handles x86, x64, ...
  • 8,185
9 votes
Accepted

When to use OllyDgb over Immunity Debugger

Immunity Debugger is forked from OllyDbg v1.10. So you should use the latest version of OllyDbg (currently v2.01) instead of Immunity Debugger if you want any OllyDbg v2-specific features/fixes. If ...
9 votes
Accepted

What is the info displayed by radare2's afl?

First, I'll answer your question straightly: 2nd column: The number of basic blocks in the function 3rd column: The size of the function (in bytes) 4th column: The function's name You might have ...
  • 8,809
7 votes

Is there any disassembler to rival IDA Pro?

ScratchABit is an open-source, interactive, incremental, direct-manipulation(*) disassembler with IDAPython-compatible API, allowing reuse of multitude of the plugins developed by the community. ...
  • 275
7 votes
Accepted

Best alternatives to IDA Pro, Immunity and OllyDbg for a blind user

You can use gdb on Linux, WinDBG, and could give a try to radare2: it's not as rock-stable as the two previous ones, but it's tailored for reverse engineering, and supports gdb:// and windbg:// ...
  • 2,496
7 votes
Accepted

Any tool for finding IP that a process use/access?

Linux As @Nirlzr correctly mentioned, netstat -ape | grep <proc_name/pid> will show you the active connections of a process. It might be just enough for you but there are some cases where it ...
  • 8,809
6 votes

Decompilation techniques for DOS .COM files

My answer is a little late; newcomer to this site. The Decompiler project was initiated in order to decompile MS-DOS EXE and COM binaries. The project has both a command-line and a GUI tool: https://...
5 votes

Is anyone building a python/ruby module to reuse 010 Editor templates?

I was searching for something similar and I found pfp! pfp is a python-based interpreter for 010 template scripts. Also take a look at the blog post.
  • 51
5 votes
Accepted

Is BinNavi available? If not, can I get the source from anywhere?

BinNavi was just released as open source today by Google, so you can get it for free. About using it with something else than REIL, if you're fearless, you can give a try to radare2, since it can ...
  • 400
5 votes

What are the tools to analyze Python (obfuscated) bytecode?

A challenge in writing a tool to extract the control flow of python bytecode is that there are so many Python bytecodes versions to choose from, about 25 or so by now (if you include pypy variants). ...
  • 203
5 votes

Decompiling .pyc files

I, of course, use uncompyle6. Disclaimer: I work on this project. I've written at length about the uncompyle6 and pycdc here.
  • 203
5 votes

binwalk zlib data

The differences between the binwalk results may be caused by the different version of the binwalk you use. So, check the version of your binwalk by simply running binwalk without any parameter. ...
  • 1,749
5 votes

Is there an actively maintained collaboration plugin for IDA?

At #SSTIC 2017, a french security conference, we will reveal a new solution : https://www.sstic.org/2017/presentation/YaCo/ Last commit (in our private repo as of now...) was 5 minutes ago :-) The ...
  • 151
5 votes
Accepted

Change sending IP of only certain executable

Following OP's other questions, assuming Windows OS This can be achieved with many 3rd-party solutions for Windows, choose the one which fits best to your needs: Proxifier Proxifier allows ...
  • 8,809
4 votes

Are there ready-to-go reverse engineering VMs?

Another option is Fireye's Windows-based Flare VM. Unlike the Linux-based examples on this page, Flare VM only provides an installer script, not the VM itself. Fortunately, you can get a free Windows ...
4 votes
Accepted

How to disassemble .NET after using Confuser

Try http://de4dot.com its a powerful .net deobfuscator. I've authored a serie of tutorials dubbed "demystifying dot net reverse engineering" google it, its a great point of start if you are new on ....
4 votes

Best alternatives to IDA Pro, Immunity and OllyDbg for a blind user

A thought - Visual Studio has good accessibility features (according to their blog at least) and it can display assembly code for a compiled app. This is good if you want to learn what complied ...
4 votes

Best alternatives to IDA Pro, Immunity and OllyDbg for a blind user

Sorry for the late answer but I only now noticed this question. Disclaimer: I work at Hex-Rays, mainly on IDA development. It so happens that we have a few blind users. With their help, in recent ...
  • 35.6k
4 votes

Tools for RE OpenCL Kernel

You may use cuobjdump, nvdisasm, or nvprune, three CUDA binary tools. You can find a full explanation of how to use it on this page. See also this question in SO (Disassemble an OpenCL kernel?).
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4 votes
Accepted

How to unpack kkrunchy executables?

For my unpacking session I'm using x64dbg and I will unpack the executable in kkrunchy_023a2.zip. Get to the entry point and enable trace record. Also bind the Trace into beyond trace record option ...
  • 1,632
4 votes
Accepted

How do reverse engineers commonly detect the format of binary data?

The problem being addressed here is commonly called the semantic gap. If you stumble across any binary snippet like the one you posted, it's nearly impossible to deduce the way the value is meant to ...
  • 2,886
4 votes

Binwalk extracted images corrupt?

Binwalk does carving, it doesn't care if embeedded file maybe cut into pieces, and its the parts are not stored in the container file continuously. It just finds JFIF header and tries to guess the ...
  • 1,810
4 votes
Accepted

Lipo alternate for linux

Here’s a port of Apple’s cctools to Linux, it should include lipo: https://github.com/tpoechtrager/cctools-port
  • 35.6k
4 votes
Accepted

Can I get a valid source code from this assembly?

For IDA Pro there are decompiler plugins available that can generate a code similar to C (if everything goes well). But IDA Pro + decompiler for the architecture you need is pretty expensive (1975 USD ...
  • 751
3 votes

What are the tools to analyze Python (obfuscated) bytecode?

The Flare-bytecode graph project can help with graphical bytecode CFG representation. Taken from the project README: ... It is also possible to create control flow diagrams using GraphViz. The ...

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