Questions tagged [binary-analysis]
The process of gathering information about a binary file, either with static or dynamic methods.
493
questions
2
votes
1answer
35 views
When would a program normally transfer data between memory and coprocessor?
In the analysis of an ARM binary, when would one normally encounter transfer operations between memory and a coprocessor? These are encoded as the LDC and STC operators.
Would it be common for ...
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0answers
38 views
How do I view registers at a specific point of a binary's execution?
I have a binary that I'm attempting to reverse engineer to find a flag. From using ghidra I have found that the flag is stored in the program at a point called "check" and then run through ...
0
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0answers
62 views
Extract smartwatch firmware bin file
I'm trying to extract files from a bin file that's the firmware of a smartwatch.
I tried using
binwalk -Mre firmware.bin
but got no files, this is the result:
How should I extract/modify this bin ...
1
vote
2answers
71 views
Can't figure out a crash in IDA "The memory could not be read -> 00000710 (exc.code c0000005, tid 20612)"
I'm trying to debug out a game. Basically, the Steam version works perfectly but the GOG version (which is 8kb smaller) has an annoying problem where for some people (which happen to be me) the game ...
2
votes
1answer
131 views
Proprietary 3D Format Reverse Engineering: What Could These Numbers And Matrices Represent?
I'm trying to reverse engineer a model format from an older Russian game (Pathologic) with limited success. It is a proprietary model format not recognized by any converters/editing tools (believe me, ...
0
votes
1answer
52 views
string pointer to byte conversion condition
I am trying to understand the following snippet. I understand that the first check would check if it is even if it would be an int, but I don't understand it in this context.
Could someone explain to ...
0
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0answers
26 views
How to debug an unknown Tricore binary
I want to analyze a binary from a automotive ECU with an Infineon TC1797 Tricore processor. I can load it in Ghidra, and have analyzed and reverse-engineered a bit of code at the starting address. I ...
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0answers
45 views
Unknown binary format (.scp) - No Header
I hope everyone is doing well. I've recently been trying to decode the structure of some files that contain a lot Unicode-8 IIRC characters, with a mix of binary. When I put it into IDA, I can't seem ...
1
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0answers
30 views
How to find references for a string (where it is being called) in Go binary
I have a Go binary and I have this string:
When I go to its location, with IDA Pro, and tries to find all the references (using x) I am getting a message that there are no references:
It might be ...
0
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0answers
55 views
Inflate zlib Data Stream from Hex File
I am working on a firmware bin file that has been extracted from an EXE file. The Firmware was inserted as an encrypted PKZip resource in the EXE.
I was able to fish the EXE password at runtime and ...
2
votes
1answer
116 views
Reverse engineering Roland TR-8S kit file format .t8k
I'm trying to figure out the file format that the Roland TR-8S drum machine uses for importing/exporting drum kits. My goal is to replace the sample (PCM) data within a kit. It's a proprietary binary ...
0
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0answers
110 views
Extracting Userdata from Userdata.bin file backup of oneplus 7pro mobile
I have userdata backup file (Userdata.bin) of oneplus 7pro. I want to extract photos and videos from this. when i used the command "binwalk userdata.bin" it shows
DECIMAL HEXADECIMAL ...
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0answers
154 views
Repacking vmlinux into zImage/bzimage
While RE an embedded device I ran into a problem - I need to patch a check in the kernel which has no sources available. Unpacking the kernel and binary-patching went smoothly. However I cannot get ...
0
votes
2answers
92 views
Is it possible to reverse CGI binary file?
I wanna reverse CGI binary file.
Is it possible?
What are the recommended tools and guides?
Thank you for reading my question.
$ file test.cgi
status.cgi: ELF 32-bit LSB executable, ARM, EABI5 ...
2
votes
1answer
50 views
Reversing uboot on an aarch64 Hi3559AV target problems
I am trying to reverse uboot for an ARM aarch64 Hi3559AV target.
I've dumped the binary uboot.bin.gz, and have loaded it in IDA at the correct address. IDA seems to see a lot of strings (and ...
0
votes
2answers
127 views
Open unknown image format (probably a RAW image)
I copy image files here from a linux based system which ends with .bin.
Unfortunately I don't know how to open it. The goal is to convert images to this format later.
What I have already tried:
Open ...
0
votes
1answer
72 views
What character codes could these be?
Good day. I have these character codes in a binary file (Adobe After Effects Project) that represent a string. If I change them the text inside the application changes. However, for the life of me, I ...
0
votes
1answer
90 views
How to get the input necessary to get to the end
In short, I have a code that gets an input via stdin. Once it has the input string in memory, it verifies its integrity by calling a function for every condition, and exiting the program if those ...
0
votes
0answers
56 views
Reverse engineering encrypted router backup config file
My router has a config backup function that downloads a base64-encoded file.
After decoding the file, it's clear that it is encrypted:
I have tried redownloading the config, both after having changed ...
0
votes
0answers
65 views
Nokia 105(TA-1114) Firmware analysis using Binwalk
First please forgive me if a make any mistake. i am not a primarily English speaker but I will try my best.
Few days ago i started to tinkering with Nokia feature phone Nokia 105(TA-1114). I get a ...
-1
votes
1answer
74 views
Instrument memory accesses of python scripts
My research requires processing memory traces of applications. For C/C++ programs, this is easy using Intel's PIN library. However, as suggested here https://stackoverflow.com/questions/51835532/use-...
2
votes
0answers
66 views
How to modify checksum after making changes in Nokia 215 4G firmware?
If I change any character in the firmware file and try to flash it, it will failed. But it will successfully flashed if I changed the string with the same number of character if it's not a function.
...
0
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0answers
89 views
Help to find the main menu apps in Nokia firmware
I am trying to custom Nokia 215 4G firmware
I want to remove specific apps like games, radio, browser...
If not removing it, redirecting it OR even damage it. So when you click on an app it will open ...
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0answers
79 views
What type of file has the file signature 'BOOT'?
I have a .bin file which I am trying to disassemble into something that I can edit. Given that binary files can contain just about any binary data, I found it difficult to assess what file data is ...
0
votes
1answer
32 views
The Logic Of Incremental Data on Serial Communication Encoding
These are the serial communication reverse values.
I am trying to understand the logic behind this.
I am pretty sure that 2 bytes represent 1 byte(high byte and low byte), values are correct.
I tried ...
0
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0answers
46 views
Understand the AES encryption mode
I am reverse engineering a software that implements its own encryption over HTTP. The implementation is very simple, the client has the server's public key which it uses to encrypt the data it sends ...
1
vote
1answer
136 views
Arrays assembly
I'm reversing my C array's programs where I'm storing numbers in arrays like this...
int marks[5];
marks[0] = 1;
marks[1] = 3;
marks[2] = 2;
marks[3] = 7;
marks[4] = 9;
so the compiler showing me the ...
0
votes
1answer
76 views
Why compiler is doing this?
While I was disassembling my own C code for practice I saw an interesting point which I want to share with you guys and needs to know the answer as I always get from here. Now, the interesting point ...
0
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0answers
65 views
How to Find Password/ Bypass Password in a Switch Statement using IDA
I'm new to reverse engineering, wondering how access or bypass the password contained in the switch statement ?
File Link
2
votes
1answer
110 views
Not able to understand the C-switch statement in disassembly
While I'm trying to disassemble my own C code I am stuck in a problem of not understanding how this Switch statement is implemented in assembly code. Can anyone please help to figure it out? This the ...
0
votes
0answers
33 views
IDAPython NtCreateFile
Let's say I want to print the filenames on every call to NtCreateFile
(With %any% exe loaded in IDA )
The first problem is to get the ntdll!NtCreateFile address
Tried to do it like this ...
12
votes
4answers
4k views
Why do reversers nowadays reverse engineer using decompilers and not disassemblers?
I see many reverse engineering lessons and every second person does reverse engineer using Ghidra decompiler and not disassembler as both are available in the same platform. I assume that reversing ...
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0answers
83 views
Control flow graph of entire binary file
Is it possible to get the control flow graph of the entire binary file using any disassembler? IDA Pro generates the CFG for each function. Can we use it to get the CFG of the entire program?
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0answers
67 views
Possible ways to reverse enginerring the boot file
I am trying to take files from the file called LOADING.KWI
it is the boot file for multimedia, located on the loading sdhc card, which should be inserted in multimedia's slot, without this card the ...
0
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0answers
70 views
finding a not-so-straightforward game's function
I am working on Mad Max game [ APEX engine ]
I do my best to explain the situation.
so my target executes function like this:
there are commands like " call [eax+XX] " or " call RX &...
0
votes
1answer
33 views
How to force a program to run as monothread for dynamic analysis?
I'm reversing a program with x64dbg and ida (I switched from ghidra), hence disassembled and decompiled, I need to understand what is happening with dynamic analysis, but I have a tricky part where ...
3
votes
2answers
88 views
How to figure out functionality when doing Static Code Analysis in ASM?
When doing Static code analysis on a disassembled app, I usually end up seeing many calls to registers (CALL EAX for example), which is constructed in runtime, which leaves me clueless on how to ...
0
votes
1answer
104 views
How to export arm64 and x86-64 binary into one?
I am trying to export a binary that contains both AARCH64-64 and x86-64 in Ghidra. I only opened the x86-64 counterpart to perform some changes.
When I tried to export it, it exported a .bin file that ...
0
votes
1answer
49 views
IDAPython, parse IDA DB as PE file
I have buffer loaded into IDA with IDAPython in a costume loader script, I want to now to be parsed as a PE, or in fact, it would be better if IDA will try to reparse it as a PE, is it possible ...
0
votes
1answer
278 views
Advanced Binary Exploitation CTF
I wanted to ask your assistance: Where can I find advanced ctfs (that hopefully contain solutions) regarding binary/kernel exploitation? I am interested on finding x86_64 linux/windows/arm64 that ...
0
votes
1answer
59 views
usercalls in old Win32 game
I am currently analyzing an old Win32 game from 1999 that was probably compiled with Visual C++ 6 and was programmed in C.
I noticed that there are almost no usercalls (i.e. calls that use registers ...
2
votes
1answer
191 views
The Knowledge of Compiler for becoming a good Reverser
I just reached the the topic of Compilers in the book "Reversing:Secrets of Reverse Engineering" So, I want to ask, is the knowledge of Compilers necessary for becoming a Malware Reverse ...
1
vote
4answers
103 views
finding sequence of opcode in binary
I have dis-assmebled binary and want to check if it contains particular sequence of opcodes(obtained from other reference binary). how to do that . i know plain byte
level comparison wont work as as ...
2
votes
2answers
112 views
C++ structure containing a RTTI getter function?
I'm working on reversing a C++ application and I've come across a structure that contains a getter function that returns TypeDescriptor*, I've read some articles on RTTI and reversing C++ but can't ...
0
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0answers
67 views
What is .data.rel.ro used for in GO on Linux?
I'm reversing a GO binary, and I was trying to locate where some symbols appear in the binary. I did the following:
Used nm on the binary - which did not recognize any symbols
Used go tool nm - same ...
0
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0answers
40 views
Bypassing debugger detection in radar2
I'm currently doing a reversee engineering challenge. I disassembled the ELF binary in radare2, however the binary checks whether its attached to a debugger. How can i bypass this detection ? Thanks ...
0
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0answers
35 views
Issue Debugging in IDA PRO
I am analyzing a binary file to retrieve the password. It requires a userID and password. By analyzing I need to crack the password. But after running through IDA it is being terminated.
First, I used ...
2
votes
1answer
663 views
Correct way to understand local_ in ghidra disassembly
Attached is the part of a disassembled main from a x86 binary file, generated by ghidra.
**************************************************************
...
1
vote
1answer
697 views
Mul(Multiplication) in x64 and in x32 assembly
I'm completely new in malware reverse engineering. I'm stuck in a confusion that,
I studied that in x32, mul instruction multiplies the source with eax register and store the result as 64 bit value ...
1
vote
1answer
421 views
Defining all undefined functions
I analyzed a binary, and lots of functions weren't detected as such - the bytes weren't detected as assembly. I read about the Aggressive Instruction Finder analysis and used it. Now the instructions ...
