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142 views

How can I retrieve image files embedded/compressed in a MPL file?

There are some images hidden somewhere in a PE I have, I can't figure out how to extract them. This PE is from around 1997 (I think it's 32 bit) and I believe it contains some 3D model renders from ...
3
votes
1answer
47 views

Radare2 ptrace can not attach

First my setup: Linux Mint 64bit 4.15.0-20-generic radare2 the newest version from github /etc/sysctl.d/10-ptrace.conf = 0 Executable: ELF 64-bit LSB executable, x86-64 read write and ...
0
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0answers
97 views

Decrypting Lua Files from game

I'm truing to decrypt LUA scrpits from cocos2dx game (for wiki). Links to files of game: libhellolua.so (cocos2dx external library) example encrypted LUA-scripts (*.abc files) I was reading a ...
0
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0answers
44 views

IDAPython - Find the start of an undefined code blob

I'm currently working on an IDAPython script that aims to remove various rogue-byte from the malware that I'm reversing. I'm in a case where some portions of my code contain this type of anti-...
0
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0answers
16 views

how can i Encrypt a decrypted zte zxhn h108n V2.5 config file?

i have decrypted the config file using a program i found online ( maybe made by python to exe ) so to decrypt using it you type is command into CMD decode_zte_config.exe config.bin config.bin.xml ...
0
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1answer
24 views

How do you get the operand data type using idapython?

I know I can set the operand data type of my disassembly using functions such as OpBinary, OpOctal,OpDecimal, etc. Now, I'm trying to get the current operand data type of my disassembly instead. For ...
0
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0answers
35 views

radare2 (v3.6.0) on windows(x64) not change registers values in debug mode

Whats wrong: d:\radare2\bin\radare2 -A -d d:\test.exe Spawned new process with pid 7192, tid = 8572 ... [0x014eb83c]> pd 5 ┌ (fcn) entry0 2066 │ entry0 (); │ bp: 0 (vars 0, args 0) │ sp: 0 (...
2
votes
1answer
94 views

Can Ghidra do backward symbolic execution?

I am searching for a tool which can do backwards symbolic execution on x86 binaries. More specifically, I would like to give the tool a program state(PC value + registers + memory content) and have it ...
1
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0answers
19 views

IDA losses renaming and functions border data when debugger starts: is there any workaround?

I try to use IDA to debug Android application. As always, I perform static analysis first and rename registers, memory locations, jumps, etc, to make assembly code more readable. However, as soon as ...
1
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0answers
52 views

Decompile large function in IDA

I'm working on a crack me, specifically: jaunsacco's DragonCrack and the first thing I've gotten stuck on is that the program is built mostly as a enormous main function. After attempting to decompile ...
4
votes
1answer
55 views

how to flash image.bin with uboot using serial or tftp

Hello I have a 4G LTE router which is blocked. I have access to its serial interface and I have already dumped the partitions before via telnet from another device of the same model. Here's the ...
0
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0answers
28 views

faster kernel debugging in IDA (not VMWARE)

I am debugging ESX server in kernel mode(windows). I use windbg debugging through COM PORT(eventually). Can I get VirtualKD to work in this scenario? Suspending IDA takes more than a few seconds(...
1
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0answers
98 views

Checksum Calculation

Can anyone manage to work out how the checksum is calculated in the following data? Have tried reverse engineering crc and xor and anything else I can think of. There is a definite pattern there, but ...
1
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0answers
16 views

.NET manifest resource format

Currently I'm writing a parser for .NET files and stuck on manifest resources. My main resources: Huge documentation Short summary For resource format I have found this project made in 2005, all ...
2
votes
1answer
38 views

Where is Android binary XML format documented?

This format is always trouble for reverse engeneering. When there are question about binary XML, the usual answer is "use apktool" (or something similar). However, no tool is perfect; actually all ...
2
votes
1answer
145 views

How to use the book “Reverse Engineering for Beginners” by Yurichev?

I just finished skimming the book Art of Assembly by Randall Hyde. So now to get my feet wet in assembly/reverse engineering reading, I started the book Reverse Engineering for Beginners. The thing ...
1
vote
1answer
49 views

MakeArray from stack variables using idapython

I want to MakeArray() to stack variables which can be done with IDA like so: MakeArray() Create an array. ea - linear address nitems - size of array in items This ...
0
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0answers
29 views

convert NPRG9x07.mbn to NPRG9x07.bin

Hello i have qualcomm based bootloader for mdm9x07 platform i want to convert to bin format but i did not find any script that does the conversion here are the mbn files : NPRG9x07.mbn2 ENPRG9x07....
-2
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0answers
41 views

Android Shell access

I have a question about binary on Android. We know that if the shell command is executed by adb, the Android system runs the command using the binary in /system/bin. So in the NDK it's the same way. ...
1
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0answers
68 views

DLL obfuscator - what kind of obfuscator is this?

when I am looking for packet editor, I found open project on http://www.packeteditor.com/ when I learn how it works, I see that the application is injecting a dll named WSPE.dat, when I load this WSPE....
1
vote
1answer
97 views

How to extract firmware from a western digital hard drive with custom firmware

Hi all i got a western digital hard drive from a DVR which contains custom firmware so you will not be able to install any hard drive you want on the DVR device. (digital video recorder) something ...
0
votes
1answer
46 views

how can I know if PE file has appended data or not?

while doing this, I dont know the whole file size (pe size + appended data size) my PE file is embeded in othe pe file, so I dont know if it has appended data or not and also dont know its total size.
1
vote
2answers
68 views

ECU tune and reverse engineering

I'm new to the ECU (or chip) tune concept, and I try to understand what is going on there. I understand the concept and the goal, but I'm having difficulties to understand what is actually going on ...
0
votes
1answer
55 views

Remote debugging using IDA, connecting to windbg server (kernel mode)

I do kernel debugging by using a virtual com port. One machine (host) is debugging the other machine. I have a remote machine that has IDA, and I wish to connect to the debugging session in the host ...
0
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0answers
36 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?
1
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0answers
24 views

Debugging arbitrary ARM binary image using IDA and QEMU

i'm new to this and still learning a lot. Now i have managed to download the binary image from an Flash memory out of a unit having an OMAP5912 SoC. The SoC has an ARM9 family CPU core running little ...
1
vote
0answers
27 views

How can I emulate Huawei routers HG5xx firmware?

i want to pentest some HG routers in a way that i can try every thing without worrying if it would damage the router or not .... and a better view of debugging the actions .
0
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0answers
27 views

How to change operator by GDB?

How can I change je to jne via GDB tooL?
1
vote
1answer
70 views

unpacking Download.img firmware for alcatel mw40

Hello i'm trying to unpack file Download.img from alcatel mw40 (based on qualcomm 9x07) firmware but it seems i can't do it with 7zip or mount the img file . someone already extracted the file which ...
1
vote
0answers
68 views

How does IDA apply its FLIRT signatures and how are they licenced?

I'm considering writing a Ghidra extension that would apply FLIRT signatures, but I'm not sure whether the license would support that, or whether FLIRT is dependent on inputs from IDA's architecture ...
3
votes
0answers
82 views

How to do debug a running java process in linux?

TLDR I want to do live debugging of a java program on a linux machine, and don't how/what debugger to attach to the JVM to get this done. I expect that this is a well-solved problem, but I lack the ...
1
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0answers
38 views

Trying to understand linkedin's anti-robot system [closed]

I noticed something very odd about Linkedin anti-bot behavior and I am not being able to fully understand it. Basically, there are multiple people who set their profiles to public, allowing search ...
1
vote
1answer
33 views

DEX file referenced type is not defined in file

I am analyzing a dex file and to ease with reverse engineering, I converted it a jar so it could be decompiled. In the file android/support/v17/leanback/media/MediaControllerGlue.class, the following ...
0
votes
2answers
77 views

Unable to exploit format string vulenrability on Ubuntu 18.04.2 LTS

I am studying from "Hacking: The Art of Exploitation" and in program fmt_vuln.c format string is exploited. I am getting Segmentation Fault error. Checking position of AAAA on stack: $ ./fmt_vuln ...
1
vote
0answers
29 views

Breakpoints in InProc COM object .dll?

I have a very simple exe that just uses CoCreateInstance to load a COM dll. This dll contains 1 function. I know where it is, I know what it's called etc. I know where in the exe it calls it. But ...
0
votes
1answer
41 views

How to remove line? [Help with CTF]

Hi! So, the program print me a Flag length is 32. As I understand call strlen convert my flag to string of length. So, I want to remove that part call strlen or somehow avoid it (maybe I'm not right ...
2
votes
1answer
187 views

Decrypting Lua Files

I am trying to decrypt a lua file which has been encrypting using a key. Some background to the LUA file. Its from an android Game i decompiled the APK and found that all the lua files are encrypted. ...
0
votes
0answers
32 views

Bufferoverflow Stack

I want to do a buffer overflow exploit in the stack. For this i read in data via the "gets"-function. void ExploitMe() { char buffer[256]; gets(buffer); } I compile this file with gcc test.c -...
1
vote
1answer
46 views

DLL Injection Call Address In Target

I have an address that is located in a dll loaded by my target process. I would like to call this address using dll injection. For now my dll looks like this: BOOL APIENTRY DllMain(HMODULE hModule, ...
0
votes
0answers
26 views

Examining Stack Frame in GDB

I am learning exploitation from the book "Hacking: The Art of Exploitation". In the program an integer variable auth_flag is declared after a char array password_buffer. So on stack frame first ...
0
votes
2answers
74 views

Predicting Memory locations of arguments within a function

I'm trying to write a script that would help display the memory contents of the arguments passed within a function. For example, in the function below, the first argument starts at the EAX register. ...
1
vote
1answer
43 views

Finding out what calls win32u.dll functions

There's a button which, when clicked, writes some data to the clipboard. I'm trying to call the function this button executes using DLL Injection. I managed to find the function in win32u.dll which ...
0
votes
0answers
35 views

Can machine learning be used to simulate the working of an actual machine?

I have seen one paper on decompiling C code and other software-based reverse engineering (of sorts) been done using machine learning (or claims on doing so). I am interested in finding out if the ...
0
votes
2answers
62 views

Firestick get application binary

I would like to reverse engineer and ultimately patch an application on my Amazon Firestick. To doo this, I want to analyze the app executable. I believe third-party apk's are stored in the /data ...
0
votes
0answers
68 views

Advanced Anti-Debugging Techniques

I was wondering what are some advanced AntiDebugging techniques that more advanced than the basic ones like IsDebuggerPresent and CheckRemoteDebuggerPresent?
0
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0answers
48 views

How does windows 10 v.1803 save the password in the SAM file?

I'm doing a search on how windows 10 saves hashed passwords in the SAM file. From this article I suppose that Windows does this: If the password is 123456 and the user has RID 000003E9: CALCULATION ...
0
votes
1answer
73 views

Need help identifying a -possibly- encrypted string

I'm having some trouble building an app that gets data from a database to keep a log of files added to a website. Most URLs are generated from a file ID and a time stamp, some of those URLs are ...
1
vote
1answer
34 views

How to determine target of far call in Windows 3 16-bit protected mode binary

I'm attempting to patch an old 16-bit windows 3 new executable binary which is in protected mode. It's a simple setup executable. Additionally, I'm doing this disassembly on linux and I've used ...
0
votes
1answer
85 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 ...
1
vote
2answers
55 views

Bochs x86 16bit and IDA dissasembly

I have been trying a figure out how to get Bochs to run an x86 embeded firmware rom so I can disassemble while emulating. When I start the debug in ida bochs just says "wrong segmentation". Loading in ...

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