Questions tagged [static-analysis]

Static analysis is the analysis code without actually executing it. This is in contrast to dynamic analysis which executes the code.

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Radare2 8051 code bank switching

Some of 8051 chips use bank switching to extend accessible code memory. Good example is Silabs C8051F12x. Another example is here. Code area in range 0x0000..0x7ffff is common always accessible code ...
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How can I tell whether or not a given library method is being referenced by a consumer program statically in OOP languages?

Preface: This question is about source code reverse engineering and static analysis. Meaning, there is no built code available but I have access to the source code of the program. Imagine I'm looking ...
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691 views

Is this a good way to get past anti-debugging measures?

This program I am analyzing is full of anti-debugging. It won't even run if most debuggers are loaded before I start the app. I tried using IDA to static analyze it, but it was written in a OOP ...
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378 views

Is there a static data flow analysis tool for .net assemblies?

I read here that CAT.NET and FxCop are dead. As far as I understand, the successor Roslyn requires a visual studio project and source code. Is there a tool that reads in a compiled .NET program and ...
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CRC16 Reverse in C166 Arch

Before that I asked about piece of code that used in this algorithm (here). Now I have a bit problem with the rest of algorithm. So I have to describe this with detail. Sorry if i vast your time for ...
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36 views

Strange memory allocation behaviour

I'm currently working on a modding library for a particular game, and I have come across a part of the menu system that I can't figure out the purpose of. The expression in question is this: unsigned ...
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42 views

Statically injecting translated NASM assembly into existing ELF binary

I'm trying to statically patching ELF binaries in order to incorporate code that can help provide run-time protection. In an effort to save time writing and debugging assembly, I took the following no-...
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60 views

Immediate offset LDR in presumed malloc function looks wrong in static analysis

I am attempting to disassemble a ROM image for a BCM4366C [1] after reading a blog post where researchers reversed some other Broadcom chips [2] . I have analyzed the ROM image in Ghidra and I have ...
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117 views

Removing/bypassing a BIOS whitelist

I am trying to bypass or erase the BIOS whitelist on my Thinkpad T440p. So far I've used flashrom and a soic8 clip to dump the bios to a bios.img file made another dump and compared with diff bios....
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63 views

ARM chip gpio/ identification from firmware code

Device: i was able to recover bricked Chinese IOT a Sous Vide cooker. Replaced damaged capacitor. it works. it has ARM soc/mcu/processor WI-FI (broadcom) LCD touch screen + 16bit STM mcu. EEPROM ...
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14 views

Locating Exit/Abort Functions from Static Analysis

Similar to this question, I'm interested in locating exit and abort style functions in a firmware - any function call that in fact terminates the execution, by statically analyzing the firmware. My ...
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40 views

IDA Pro SP tracking

I am reversing a BIOS and its code extensively uses SP register for 16-bit return addresses (and also things like "bswap ESP" to obtain a "two-level-deep" stack, and rarely "mov mm7, esp" to obtain a "...
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62 views

static core dump analysis

I got a coredump from an unknow binary. I want to retrieve as many information as possible (memory, register, contexte..) Most of the answers available on the web speak about coredump analysis using ...
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224 views

How to restore IAT?

I have the start address and the end address of the IAT now im trying to restore the table/folder of it. the start address is: E7C000 thx for helping
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60 views

Parse / statically analyzing .NET binaries using python

Which libraries do you use to parse and statically analyze .NET binaries? Is there a python module, or do I have to use a .NET library such as dnlib? Does it make sense to write a python wrapper for ...
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151 views

Reconstructing struct/union-based IPC protocol wire format

I'm embarking on my first reverse-engineering adventure. I think I've picked a rather dense piece of steak to start out with. I have three C programs which communicate together using an unknown IPC ...
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1answer
435 views

pyelftools relocation section symbols

I have been trying to get into reverse engineering as of late and after playing with Radare2 I realized I was playing with a lot of things without really understanding what I was doing. In an effort ...
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797 views

Finding function call (with arguments) in ELF file

I have two kinds of ELF files, built from C++. .so files: ELF 64-bit LSB shared object, x86-64, version 1 (GNU/Linux), dynamically linked, BuildID[sha1]=5e751e769912aef28bc63b888e5e4904b867a180, ...
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227 views

Saving IDA Graph to PDF format?

I want to save flow/call graph of IDA into a pdf format so that I could view it in my android. How can I do that? I know IDA can generate a flow chart (gdl file) and call chart (gdl file). But my ...
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72 views

Where can I get a good description about windows build-in exe programs like wupdmgr.exe?

I was checking the Strings for Lab01-04.exe from Practical Malware Analysis and I found wupdmgr.exe and I face this every time I search for an exe. Is there any "msdn" alike repository but for exe ...
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469 views

Static binary instrumentation tools for android .so libraries?

I'm trying to statically inject code into an android app. The best way would be to use APKStudio and the like, but there are very harsh restrictions on the device and the app itself, so that apk ...
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Why parameters are out side of stack frame ( green) in attached image?

In my assumption, stack frame is between EBP & ESP only. But Stack frame is started from out side of EBP, in the attached image.
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Can you strip a mips64 object file?

-strip doesn’t know what this file is but read elf and objdump recognize it read elf gives entry and all the headers. I’m trying to find main() or the start function. Can I strip the file? Do I need ...
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35 views

What is the difference between a file on disk and a file on memory?

Currently, I am learning about the differences between static and dynamic analysis. I have come across this incredible question that has been bugging me: What happens to the file (in memory) when you ...
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46 views

Using GDB to find the address of a buffer in a stripped C binary

I am working with a crackmes binary called Simple Overflow. It has two buffers with sizes 0x10 and 0x8, and it uses malloc to allocate two contiguous memory blocks (see <+25> and <+39> on ...
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1answer
64 views

How can I find a value in Tricore(TC1766) Arch?

I recently work on Tricore Processor, but I have some problems. With reading memory value. I do not know if I am right or not, but I think a part of flash memory copied to RAM and now in my algorithm ...
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49 views

How to use aarch64 call convention to understand an unknown function?

I’m trying to reverse engineer an aarch64 Golang binary which happens to call a symbol, i.e., function named guess_me which is an import. To stop the binary from throwing errors, I write a Hello World!...
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90 views

Delphi mt38 CRC (Tricore 1766 Arch)

I want to calculate CRC32 for Delphi mt38 and found the below assembly algorithm and converted it to C. It seems that this algorithm is defined for n = 256 or 1024. I want to calculate CRC32 for n = ...
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22 views

Symbols for detecting UBSan

I am looking for the symbols that reveal if a specific binary was compiled with UBSan. Unfortunately, Checksec is not able to detect it. So, I have compiled the snippet reported in the official doc. ...
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144 views

What are the known techniques used by wrappers and obfuscators to protect against decompiling?

I am NOT looking to make my application 99% safe, nor my goal is to prevent a a determined reverse-engineer to disassemble it, but simply is to protect my source code from lambda user with little ...
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39 views

static analysis for identifying backdoors

I am doing a research in identifying backdoors in windows .exe files. Currently I found some methods to detect. 1.String search in .exe 2.find Reffrence .dll and win32 Api calls using import table ...
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47 views

Python based static c analysis tools

I want to analyze some open-source C code, and I'm looking for a static analysis python library for C, preferably open-source. Any ideas/suggestions, based on your experience?
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1answer
109 views

Get function return value

any idea for more ways to get return value? (no hooks, no hw/memory breakpoints, no call functions) thx :) tried to find dword maybe that hold the function return, didn't found. I'm trying to create ...
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113 views

How to find who use these strings?

When i see function like this, im getting confused, because all the strings i need in this function, but how can i find which functions which this strings? how can i know the address of the function ...