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1500 questions
6
votes
1 answer

Storing barcodes as ASCII

I am currently looking at a TIFF file generated by a microscope vendor. They store an XML within the TIFF (ImageDescription tag). Within this XML I can find a element. But instead of storing the actual barcode (PDF417, DataMatrix) value,…
tibar
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6
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1 answer

Understanding hardware extracted keys

I'm a crypto newbie, but have been working on card-access systems that encrypt the card data with 128-bit RSA. I have an example (from a card) of 1024 bits of encrypted data. I also have the public key (1024 bits), which is (rather curiously) placed…
swx
6
votes
2 answers

Install Ghidra plugin without GUI

I have a plugin that I want to install for Ghidra. The current way to install the plugin is to go to the file->Install Extension in the project window, and add my plugin there. However, in my scenario, I don't have an access to the GUI and I want to…
macro_controller
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6
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1 answer

Reverse engineering compressed byte array

We are trying to extract sonar data from a proprietary sonar log file format, which we have working well in most cases. The data is stored in binary, with a variable length header containing information such as depth, geographic location etc, and a…
Matt
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6
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0 answers

Why does Hex-rays thinks that 32bit PE is 16bit?

I'm using IDA 6.1 32-bit version. I'm pretty new to IDA and Hex-rays decompiling. My goal is to generate some C source from a 32-bit PE executable. I know this file is 32-bit PE executable. I've looked at the header struct in a hex editor and…
crush
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6
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1 answer

Dalvik Byte code instrumentation framwork for dynamic data dependency analysis

I am looking forward to having your input regarding the availability of any tool that can do instrumentation in byte code level run-time, so that data dependency analysis can be carried out? Such tool exists for x86 binaries, such as Pin. Also i…
P basak
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6
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1 answer

Program won't crash on heap overflow

I'm trying to learn about heap overflows for this exploitation challenge I have to solve. In short, the program allocates 3 consecutive buffers on the heap, and I have access to write whatever I want to all of them. Even though I write over the…
user2835
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1 answer

HackRF One - Replay Attack on Garage Door does not work (12 DIP switches)

TL;DR solution Setting 4MHz sample rate and 2Mhz bandwidth in the capture tab (according to the Nyquist theorem the sample rate has to be double the bandwidth) Using the length of a DIP switch position in samples as the samples/symbol…
John St
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6
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1 answer

AndroGuard equivalent for iOS

I am doing a research project where I want to look at apps that create or extends certain classes. For Android I am using the Androguard project which provide a large set of great tools for inspecting APK files and also comes with an API which I can…
Christoffer Reijer
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6
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How to find event functions called by UI components in a C++/DirectX program

I have a program written in C++ with DirectX (as far as I know). The user interface has menus with buttons and other UI components. To automate a process I would like to find the function called by an event (eg. click on a specific button). How can…
samuirai
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6
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2 answers

A PE packer: issues with the packed image base address

I am toying with writing a basic PE packer, whose job is simply to execute the attached target PE in memory. I have spent a couple of days getting intimate with the format, and I think that I have grasped it well enough for the purpose. These are…
hauzer
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6
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1 answer

Debugging Shellcode with Bochs and IDA Pro

I am using the Local Bochs Debugger along with IDA Pro to debug a shellcode. This shellcode disassembles properly in IDA Pro, however, now I want to debug it. I tried debugging but since the configuration of Bochs is bare metal, it will not be able…
Neon Flash
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1 answer

WinDBG Hung on Shellcode Execution

I've been trying to debug a piece of simple shellcode with Windbg. To go over the steps I took, I allocated a buffer for the shellcode with .foreach /pS 5 ( register { .dvalloc 400 } ) { r @$t0 = register } and saved the address in the pseudo…
rustam Shirinov
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6
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1 answer

Huawei HG8245H, can't read some system files

I have modem Echolife HG8245H (V3R016C10S150). I'm using telnet to connect it. I need to read some files from this modem. There's a shell mode I can enter, but it is nerfed badly: SU_WAP>shell BusyBox v1.18.4 (2016-10-11 19:35:35 CST) built-in…
HE9CbITb
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Debugging ARM binary with IDA Pro and Qemu

I am debugging an ARM binary using IDA Pro by connecting to QEMU (remote gdb debugging). In gdb configuration, I am selecting ARM_versatilepb as the device. Now, I am able to successfully debug the ARM binary. However, I am unable to execute the…
Neon Flash
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