Questions tagged [obfuscation]
Concealing the nature of how things truly function or work.
163 questions
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Studying obfuscation
I am solving a crackme and I'm a complete new to this. There is very little information on the Internet on how to solve such problems.That's why I decided to study obfuscation to understand how it ...
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JSON mapping with obfuscated property names
I'm building a replacement server for the 2013 Android-based PlayJam GameStick micro console and implemented the server-side leaderboard APIs.
One game crashes when retrieving the leaderboard data, ...
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Where can I find obfuscated ELF binaries to practice reverse engineering techniques specifically for obfuscated binaries?
I’m trying to get better at reverse engineering obfuscated code (and malware in general) and I’m looking for already obfuscated binaries with increasing levels of difficulty. I’ve looked a bit on ...
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What is this .Net Obfuscator?
I'm analysing a .Net executable and de4dot doesn't detect its obfuscator. Class/Method/Property names start with #=. Does anybody know what obfuscator this is?
// Token: 0x0600EE8B RID: 61067 RVA: ...
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IDA Pro could not disassemble native function properly
Looks like some obfuscation technique was applied to this piece of code (none of start opcodes were identified properly):
Is it possible to produce manually more readable assembly?
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.NET Packer/Protector
I have been trying to analyse a .NET trojanized software, here is the link for reference:https://www.virustotal.com/gui/file/6186e0b5b1d820744f8f7aa682eec6b043ba11c7737a64e173522b8b55d06f81/detection
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unobfuscate Assembly-CSharp.dll?
First: sorry about English, it's not my language. The translation was done by Google Translate.
I'm trying to work on a .dll from a Unity game, I managed to decompile the entire game, open the .dll, ...
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Modifying a single .class file in an obfuscated JAR
i am trying to modify a jar that is partly obfuscated (and what i want to modify is in this part).
I can use Recaf, it will decompile it well and I can save modifications and export program without ...
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Decyphering 8kbps audio file format used in Solar Chanting Lotus
I'm trying to reverse engineer a solar powered chanting lotus flower so that I might replace the built in audio with something more interesting. The main chip (JL16B-083A - haven't been able to find ...
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Obfuscation indirect address
I'm studying a reverse engineering course and here is an example about obfuscation indirect addresses:
The course says:
The original code moves the content of the CH register to DL and the output ...
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How can i Lifting x86_64 assembly code to LLVM-IR
I'm researching of virus and I'm faced with the task of deobfuscating its virtual machine. I chose to do this through LLVM and I had a question, where can I see a simple example of lifting ...
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deobfuscate Dexgaurd obfuscated code
I was reversing an apk. the code detects whether the apk is running on a rooted device or not. if it is rooted or an emulator it will stop and close out. so this is the snippet code which I think it ...
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Reversing .net crypter with obfuscated imports
I have started recently with reverse engineering. I came across the linked file. It is a packed/crypted putty.exe. (WARNING: IT MAY BE BACKDOORED!!)
How it's working and loading putty.exe with runpe ...
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How find all kernel functions called by a driver in windows 11
I am working on a highly obfuscated driver that is virtualized. In an attempt to work on this driver I asked a question about some python scripts which turned out not to be effective at all so I ...
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Reverse Engineering Go obfuscated binaries
I have been trying to understand the working of this go malware by reversing it, which can be found here , so basically this stuff takes a shellcode as an input, and converts it to an exe or dll file, ...
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How to debug an obfuscated self hashing program?
I need to understand what the following obfuscated application does:
interpreter.py:
string = "lambda x : obfuscated_code_to_interpret_variable_x"
interpreter = eval(string)
...
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Python or C for a Qt application and security against reverse engineering
I actually have two choices : C or Python to create my application.
On my application users will need a key (on start) to access it, the key will be verified with an algorythm on the user's computer. ...
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De-Obfuscating/unminifying a JS code [not duplicate]
I have come across a lot of similar questions on the same heading but unfortunately, none of them provided me with the intended results.
I have a piece of code which, initially I am trying to ...
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x86 - How do I detect virtualized code by looking at the assembly?
How can I detected virtualized code by say, vmprotect, obsidium or themida just by looking at the assembly code? I know that just looking at the PE section name would help, but I wanted to detect ...
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Which encryption returns 192 hash value it means 96 in bytes?
I am reversing an APK and there is a signature that needs to be found.
The function from where the signature is generated is present in the .so file.
I did small debugging. While doing it, the ...
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How to deobfuscate Java application
Hi i am unable to deobfuscate the Advanced String Obfuscation Jar on tryHackMe
I tried
dumping the classes using a dumper javaagent
deobfuscate the jar with java-deobfuscator
threadtear functions
...
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Confusing objdump with data as code
I am trying to confuse objdump to solve the first exercise of chapter 6 in Practical Binary Analysis. Admittedly I am super weak with inline assembler but I made a best-effort attempt and tried to get ...
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Fixing/recompiling a heavily control flow obfuscated function
I've recently come across a binary that has been obfuscated with a very obscure protection.
Obfuscation
From what I understand, the obfuscator is effective in several ways.
Multiple JMPs via relative ...
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How to disassemble an obfuscated .NET DLL?
I asked earlier about unpacking a packed .NET exe. But now I need to see the source code for an obfuscated DLL:
Any idea how to unpack it?
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How can I reverse this python code (obfuscated by b64, gzip and many more)
How can I Deobfuscate this python code
Link to code
I tried to replace eval places by print. but it won't work and output is also obfuscated
Head of the code looks like this
can anyone please help me
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devirtualize? or what is this obfuscator? and how to get rid of this
from previous question i still dont get any info or any process at all... now i asking again with this question is this virtualize code or something? i try many thing and it still didnt work [i unpack ...
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Is there a way in ida pro to see the address where I have explicitly marked them as code or data, etc?
I'm analyzing an obfuscated binary. IDA did a pretty good job of doing the initial auto-analysis. Later, I went through and marked some sections as undefined, or code, etc. Now IDA can't re-create ...
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new to malware analysis and disassembly. dotpeek has been helpful. is this unreadable code due to SuppressIldasmAttribute?
just getting into rev engineering malware. i want to get to source on my own. i could use run.any or VT but that's no fun. any reason why this is unreadable the way it is? is it due to the module ...
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What are the way I can reverse engineer an obfuscated C++ program?
I am reverse engineering an program. I encountered a problem where I can't reverse engineer it as the program code is obfuscated. I realised the program is obfuscated thanks to my friend who noticed ...
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Best way to protect source code of exe that being loaded by Assembly.Load method
I am protecting an exe that being loaded by Assembly.Load... This makes everything difficult because most obfuscators causing it to not work properly or not load at all. I used confuserEx Ameteurz ...
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What is the obfuscation method utilised in Playdead's 'LIMBO' video game?
The game uses Unity3D engine, perhaps with a custom render pipeline. Reports have been made, it is not possible to disassemble it. How did they achieve that?
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Methods to alert inappropriate use of JS code
Let's say we have a JS code library that is not for sale, just internal. Of course, anyone who can access the website will be able to download that and reuse it.
To avoid others to reuse that library, ...
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Wave File obfuscation
I have this file here, that is supposed to be a wave audio file, but seems to have some obfuscation applied to it. The file header is here: https://pastebin.com/LD5aA1EG Any suggestions where else ...
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Guidelines for dealing with obfuscated code
I have taken a deep dive into reversing software with IDA, I used Ghidra before. I have already solved a couple of basic crackmes now I have targeted another one which's code is obfuscated, also has ...
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Virtual machine code obfuscation implementation details
I want to implement a VM based simple proof-of-concept obfuscator. It should take an exe file as input and produce a new pe file with appended vm section. For simplicity let's say the exe file is ...
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Trying to replicate encryption of an android app
I was trying to replicate/copy the encryption of an android app which uses CryptoJS with sha256 encryption as having seen in the source code of the android app. fingerprinting the app, it was built ...
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Reverse Engineering Java - Deobfuscating symbols
I'm new to Java and working on cleaning up a fairly large Java .jar sample where the obfuscator has renamed symbols into invalid names. For example:
import org.lib.00.0.2;
public final class 90
...
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How to call strongly encrypted DLL from Resources?
There is a program. This program accepts plugins. Plugins written with C#. I have to encrypt it. But when I use strong obfuscators I have exception. Program doesn't read. How can I fix that ? How can ...
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How to reverse engineer an exe built using nexe?
I am working on an express application. I obfuscate the source code using javascript-obfuscator.
I am using nexe cli for generating a single exe from the obfuscated code. Can anyone tell me if there ...
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De-obfuscate JS code [closed]
I came across a script that converts font files from one type to another (i.e. WOFF to TTF, etc).
I would like to understand it and incorporate some of the code into a personal project. The script ...
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Dealing with heavily obfuscated Java, possibly on bytecode level
I've got a jarfile from a friend, he told me to put it thru an decompiler. So I did, but:
JD-GUI basically spit out just the imports and didn't show any class data
CFR dumped out stack trace on ...
user30814
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Stack-pointer analysis failed
I'm testing my toy obfuscating C compiler against IDA's decompiler, but IDA refuses always functions (then the decompilation is not possible). For example, at one of lowest-levels of obfuscating, a ...
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Python self decryption script, as mean of obfuscation
I have a software with an embedded python interpreter. The software can open upon startup a given .py script and execute it. Let's assume that in my python environment I can't open other files, and I ...
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Is it possible to completely reverse this code?
i have this code i'm trying to deobfuscate
https://pastebin.com/g5mHpWE4
I used
https://beautifier.io/ and
http://www.jsnice.org/
but the result is still not good, current code:
https://pastebin.com/...
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Error After de4dot - Application Does Not Start
There is an application that has been obfuscation to learn. So in an unpack me style. In the first stage I would unpack with de4dot. After you unpack, the running application stops working.
dump and ...
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Possibly infected image
Long story short I'v downloaded a template for my website and instead of images it has the .html files included, and at the beginning those html files do include PNG IHDR , and they are being loaded ...
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Static analysis obfuscated code
I'm reversing a code that is heavily obfuscated. It uses opaque predicates, call stack tampering, junk code and control flow flattering.
Call stack tampering uses indirect branches (push register / ...
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Best way to protect source code of .exe program running on Python?
I am developing proprietary software that would be distributed in a form of .exe file. In order to use it, users will have to authenticate with their whitelist credentials (username + password).
The ...
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API Hiding Issue
I'm trying to analyze a malware which is hiding API names. When I open it with CFF Explorer, except a few API like GetProcAddress, nothing appears. Basically, I know how API hiding works. I set a ...
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J2ME games obfuscator - Spyro and Tekken 5
While reversing some J2ME games like Spyro or Tekken 5 Mobile I have encountered a weird obfuscation where all fields, methods and classes have names like A, a, B, b, Aa, Bb etc.
It's really hard to ...
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