Questions tagged [patch-reversing]
Understand software updates only-based on binary patches by reversing it and analyzing the differences between old and new version of the software.
97
questions
1
vote
0
answers
24
views
Is a jailbroken iPhone is necessary to extract the ipa of a pre-installed app like iMessage?
My research notes: https://docs.google.com/document/d/1Y-2SZX4s1E1Mq9yWHZMMBzW3BJTfUuMl-YYXoZlY73w/edit?usp=sharing
From my research, I have come to the understanding that in order to extract the ipa ...
- 11
2
votes
2
answers
166
views
Reverse engineer a calculation rule from a video game
I have recently bought an economic simulation video game, but neither the docs not the game UI describe how to estimate some costs; the user needs to actually invest and spend their money, then ...
- 121
3
votes
1
answer
146
views
How to call Windows console in ASM and printf some values there?
Is there a working way to embed the windows console in disasm code? I tried AllocConsole with GetStdHandle or AttachConsole with PID of an existing console but it didn't work. I have tried printf ...
- 31
2
votes
0
answers
78
views
Reverse engineering engine room simulator license management (x32dbg)
folks, I'm marine engineer and recently got in touch with simulator software with my professor at the Simulator Department of my university. Today I thought we could dump the original installation and ...
2
votes
0
answers
205
views
Changing Offset Value with frida
So I found this offset in ghidra, and I want to change that offsets value in Frida
with this picture I have deduced that the offset is 0x6ae210
What I want to do with this is change game....
- 21
1
vote
0
answers
42
views
Reversing Executable Package
I have an .exe file that loads some other files when executed, I need to redirect these files and export them. When debugging I know that there is a subfolder /images/%s.png where the files in ...
- 11
2
votes
2
answers
311
views
HEX code to call DLL function
I'm working with 2 third party DLLs (let's A.dll and B.dll), which I don't have the source code, only the compiled DLL. I know A.dll uses the main function from B.dll, and they both works perfectly. ...
- 23
0
votes
0
answers
134
views
Game Hacking Prevention - General Question
So I'm in a middle of developing an online video game for Windows and was wondering, how does games' hacking is even possible?
I mean, assuming I calculate the HP and the location of every player in ...
- 1
1
vote
0
answers
589
views
Can't Find hex Value from X64dbg in hex editor
I want to make a simple patcher for exe , so here is the original hex value from the x64dbg before any modify :
I took the hex value and searched for it in the hex editor ,but can't find any .
So why ...
- 121
1
vote
0
answers
195
views
Bypassing unsupported android TV box!
I have an android TV box called Proximus decoder v4, anyway the android TV box is not supported anymore by the company. When I turn it on I get an update checking, you can't even cancel it, and then I ...
0
votes
0
answers
40
views
There is a course in which they teach you to use WinAFL?
I would like to know if there is a course that begins in a basic way, such as how to use winAFL to find bugs in app desktop.
- 9
-1
votes
1
answer
301
views
Call function more times with other args
I want to call the same function more times but with other args, I can't add new instructions, so how can I call it?
- 1
0
votes
0
answers
159
views
Why won't Radare2 display main's paramethers of a 32bit ELF on a 64 bit machine?
I am new to reversing and currently trying to follow this tutorial, in which the binary provided was compiled on a 32 bit machine hence the file is a "ELF 32-bit LSB executable". It runs ...
- 103
0
votes
0
answers
2k
views
Reverse exe file compiled by pyinstaller
I am trying to get python source code from only exe file compiled by pyinstaller.
I used the pyinstxtractor.py and got extracted folder.
And then what or how should I do?
Or could you explain other ...
- 101
0
votes
1
answer
724
views
Static Binary in Windows
I am learning more about binary exploitation on windows. But I saw while revering a binary that you can create static binaries in windows too just like in Linux. It was really ugly. if I would be on ...
- 143
0
votes
0
answers
242
views
capture traffic of an android app
I was trying to test and intercept traffic from an app developed on Rhodes open source framework, I setup a proxy with burp, and of course I have installed burp certificate on my device hence I can ...
- 299
0
votes
0
answers
212
views
Can I reverse engineer a DLL file and add SEH or some error handing codes to it?
I am using some DLL files in my Java application using JNI library.
The dlls are not written by me and I do not have access to their source codes. They are so buggy and throw lots of exceptions. ...
- 229
0
votes
1
answer
123
views
ARM7 32-bit Branch Offset Calculator
I need to patch an arm7 program by replacing this fopen function by another function.
.text:00018D68 52 D7 FF EB BL fopen
...
.plt:0000EAB8 ; FILE *fopen(const ...
- 13
1
vote
0
answers
159
views
Replacing bytes from start of every function with IDA Pro
I want to fix a .plt segment in IDA Pro by replacing 12 bytes from start of every function in the .plt segment with the ones I specify.
I want to just make each function return so I'm replacing ...
- 73
3
votes
0
answers
149
views
How to see what has changed in a patched binary?
I am exploring MacOS Deckset app.
It has a trial version available on the official website.
But there's a cracked version available on torrent trackers.
I want to know what was changed by the people ...
-1
votes
1
answer
146
views
How can I analyze this code? [closed]
I wanted to analyse the code for some functionality.
in my understanding the code contains a logic handling intents with extras. I want to know how these Works! and also how can I pass extras using ...
- 299
-2
votes
1
answer
232
views
How to reverse engineer apks? [closed]
is it possible to reverse engineer an apk just to unlock hidden/unreleased features?
- 299
1
vote
2
answers
691
views
Decrypt application protocol packet
I have several applications that interact with the network, but the data is encrypted. I set breakpoints on send ws2_32.dll and found the correct buffer in which the encrypted data was located (then I ...
- 13
-1
votes
1
answer
119
views
Force debug Administrator Malware
I want to analyse a malware that do not run without administrative previliges.
I know it is risky but still.
How can I debug it with debugger as from entry point?
Because debugger could not start ...
0
votes
1
answer
1k
views
Patching memory
I've successfully reversed and patched an application on windows, but patching the executable on disk triggers a CRC check and prevents it from loading. I've used x64dbg and have the addresses I need (...
-2
votes
1
answer
4k
views
Change androidmanifest.xml file within apk
I am able to unpack an android apk file with apktool, but when I am repacking the apk file using apktool, it just crashes with errors, and ibotpeaches seems not patching those errors for years. Now ...
- 299
2
votes
0
answers
95
views
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 ...
- 299
0
votes
1
answer
1k
views
Android app crashes even while not edited, how can I solve it?
Installed an application from google playstore and then transferred to it my computer to apparently edit it and without any changes I made to it then I tried to install it through ADB, well the ...
- 299
3
votes
1
answer
495
views
How can I retrieve the encryption key in this code?
can anyone explain the following code? is it possible to retrieve the encryption key?
I think the code was heavily obfuscated in addition to obfuscation, I can recognize it is using algorithms like ...
- 299
1
vote
1
answer
663
views
Unable to intercept traffic of an android app even after patching ssl pinning
Recently, I was trying to test an app developed on Rhomobile, I setup a proxy with burp, and of course I have installed burp certificate on my device hence I can intercept other apps on my device but ...
- 299
1
vote
0
answers
1k
views
Pe file Vmp0 vmp1 section,
I have a PE file with section vmp0 vmp1, possible protected with VMProtect. I am using local debugger in IDA pro, the program will detect the debugger and pop-up an message box and quit , I used the ...
0
votes
1
answer
88
views
Easy way to understand vulnerable functions while Reversing [closed]
I have been doing reversing lately and not an experienced Reverse engineer. Mostly I do audit on binaries both fuzzing and source code.
As I am new to this stuff, I am getting some issues of ...
- 119
4
votes
1
answer
2k
views
Hooking function with frida
How can i hook functions with frida?
Can someone give me an example please, for something that do that?
Hook at 0x412312 and change the assembly code to "mov eax, 999"
I Arleady tried something like:...
- 59
2
votes
2
answers
968
views
Does the loader fill the IAT table of an .exe in load time by checking the corresponding export tables or during run time?
I came upon this question :
Can we hook the Nt or Zw functions using IAT hooking, or just inline hooking?
and it got me wondering, lets say for some reason some function was not in the IAT of our ...
- 99
3
votes
2
answers
1k
views
In reverse engineering, what does it mean to "patch a file"?
I've been solving some crackmes, and every file that I download, in the "instructions" says: "Patching is obviously not allowed". What does that mean? And how does one patch a file?
- 69
0
votes
0
answers
89
views
How to execute an import exe/dll from memory
i dumped a exe/dll file from the memory with OllyDumpEx, now i understand i need to fix the address or something like this to use the dll or to run the exe, so how can i do that?
- 21
2
votes
1
answer
1k
views
Change instruction test eax, eax to text eax, 1
I'm trying to change an instruction in assembly. Try with test eax, eax to test eax, 1. I try modify the opcodes.
For example opcode of test eax, eax: 85c0
Try to understand why is 85c0 with this ...
- 23
0
votes
2
answers
2k
views
Find flag from GO binary challenge [closed]
I have GO binary file from challenge (that already over).
I spent around 3 days to find the flag without results.
I'm trying to load the file with gdb and using the following command:
First, Trying ...
1
vote
1
answer
500
views
Not able to find Hard coded strings in the mac executable file
I know that there is a string called "Activate your subscription" used in this particular app. But Im not able to find this string from its executable. I tried strings myapp and also searched for same ...
- 145
1
vote
0
answers
224
views
Need help understanding basic buffer overflow
So I have this sample problem that I need to buffer overflow. Its an elf file that require to be run on a separate terminal then using "nc localhost 'port' " on a separate terminal we can see the ...
- 11
0
votes
1
answer
319
views
Calculate LEA operand
I have those opcodes on 64 bits:
48 8D 35 45 CE FF FF >>> lea rsi, [rip - 0x31bb].
How can I get the 0x31bb value from those opcodes and how can I know if I have a + sign or a - sign ...
- 3
1
vote
0
answers
287
views
Patching an app that updates frequently
Hello i am working with an app coded in c# which updates very often usually within 2-3 days or sometimes every 12 hours
The updates are really needed for the app to work
So i was wondering what can i ...
- 11
2
votes
1
answer
295
views
Has there been any success in using deep learning for reverse engineering?
So has there been any success in using deep learning for doing reverse engineering?
i couldn't find anything useful other than some theoretical papers, so was there any talk about this in recent ...
- 207
2
votes
1
answer
672
views
find a dialog in ida using resource hacker
I am having difficulties finding the dialog reference in IDA.
e.g. i can trace a dialog in "resource Hacker" or "PE Explorer" which looks like this:
5035 DIALOG 0, 0, 295, 163
STYLE DS_SETFONT | ...
- 275
0
votes
2
answers
202
views
Monitor all changes done by function
What is the easiest way to track all changes before and after a specific function is executed.
I know I can trace instruction but that may yield a long list of all command executed.
I want to stop the ...
- 275
1
vote
2
answers
669
views
IDA PRO - compare running process
I have a software which writes some data to specific location in memory depending on user choices.
Say i can have 2 choices, A & B.
I want to run IDA, set option A and save all the data, then run ...
- 275
0
votes
1
answer
222
views
immediate value change when start debugging
I patch the code for my work. I have a problem with code patching.
I use IDA pro 6.8.
I added code like this.
(Assembly) (Hex dump)
mov eax, 638BACh --> B8 AC 8B 63 00
Not problem ...
- 3
1
vote
1
answer
468
views
IDA PRO does miss calls when tracing
I am following this tutorial:
enter link description here
Though it uses Olly I am following with IDA.
Basically i am tying to catch where a popup decision is taking place in the program.
I though ...
- 275
2
votes
2
answers
5k
views
Patching a class file inside Jar using bytecode
I was trying to patch an application, but the application is required to exact same class size as the original one but editing class file with JByteMod, Recaf or whatsoever always changes the class ...
- 63
1
vote
0
answers
518
views
Java Bytecode edit
Hi, I would like to edit one compiled java class file & like to insert & edit a couple of lines. I'm trying to make a patch for a software & when I compare this two file the only change I ...
- 63