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Questions tagged [emulation]

The tag has no usage guidance.

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0answers
45 views

Cannot load a Floppy Disk image with Bochs emulator

I have a floppy disk image which I am trying to load with Bochs Emulator. It is from a CTF challenge and can be downloaded from here: http://squarectf.com/2017/floppy.img I am using Bochs version 2....
3
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1answer
103 views

Emulating Routers and other Embedded Devices with QEMU

I'm thinking about reverse engineering a few router models and trying to get them running with QEMU. In particular I'm trying to get the web server running. The current issue I'm thinking might be a ...
2
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0answers
58 views

How should I got about working out the format for this psp game?

I have been attempting to reverse engineer a format for a visual novel psp game ('Mirai Nikki RE: WRITE - 13 Ninme No Nikki Shoyuusha') and I have come to the understanding that the format works as a ...
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0answers
47 views

Can Radare2 emulate null pointer exceptions and others?

I'm wondering if anyone has had any luck with Radare2's configuration variables, esil.exectrap, esil.iotrap, and esil.nonull while emulating? xor eax, eax mov eax, dword [eax] <- From what I can ...
1
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1answer
273 views

*.abs (sfw) emulation in Qemu - MIPS (abs = Amiko,Skybox,OpenBox, Cryptobox,… file firmware)

I have some questions well today I tried to emulate with (Qemu) a STB firmware (.abs extension file) in Qemu. So I tried to unpack the .abs file I got many files. Example for: Amiko HD8150 2.4.43 emu ...
2
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1answer
101 views

Windows x86 compability on x64 operating system

I know some about wow64 system, in x64 windows version, and i looked up into this wow64* dlls, to see how the actual syscall transition happen, but something i can't find, and this is probably done by ...
0
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1answer
42 views

Where Is device specific information kept on smart devices

I am doing a project for school on Emulation of device using its firmware. Using firmadyne, I can start up the smart device unfortunately because it is not a real device, information fields like ...
3
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2answers
229 views

Unicorn emulator: find out if register is undefined

Maybe I am stupid, but I really dont see anything in their documentation. Say I emulate this code mov eax, 1 mov ecx, 2 Then I can get the result like so: int rr; uc_reg_read(uc, UC_X86_REG_ECX, &...
1
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1answer
107 views

library issue when running mips binary in a chrooted environment

Background In my endeavor to RE my router, I'm trying to emulate a router's firmware inside a QEMU MIPS system. I have debian-mips installed to a virtual disk that runs just fine. Its a MIPS32 Big ...
1
vote
1answer
403 views

Network support when emulating firmware with QEMU

Continuing from this question: Firmware analysis and file system extraction? I am trying to run the QNap firmware using QEmu. I have basically the same firmware as is used in the question above. My ...
2
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0answers
431 views

When to use qemu user mode versus system mode?

This seems to be a pretty basic question but I can't seem to find a good answer. I am currently just following https://w00tsec.blogspot.ca/2013/09/analyzing-and-running-binaries-from.html to learn ...
2
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1answer
3k views

Invalid ELF image for this architecture

I'm trying to load a Busybox binary with qemu-ppc-static with this command: sudo chroot . ./qemu-ppc-static ./bin/busybox And I get this error: /lib/ld.so.1: Invalid ELF image for this ...
5
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1answer
2k views

Unicorn and QEMU: Example use cases to understand the differences

The Unicorn website lists some differences between Unicorn and QEMU, especially those differences "where Unicorn shines". They furthermore write: A notable difference between Unicorn and QEMU is ...
3
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1answer
1k views

Emulate juan DVR R7816 in Qemu

I Want to emulate cctv dvr in qemu.this dvr is from juan cctv and the model is R7816.it is an 16ch dvr.I Have firmware upgrade file in .rom format which i can extract with binwalk.But i dont know what ...
2
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0answers
825 views

Emulate TP-Link WR841N using Qemu

I have downloaded a few different versions of the firmware from the TP-Link website. I've been piecing together details on how to achieve this but I'm missing some key points. Following instructions ...
7
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4answers
855 views

Disassemble using an emulator

I learned the disassembly challenges from this link. The following six challenges are listed in that article: Data embedded in the code regions Variable instruction size Indirect branch instructions ...
5
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1answer
555 views

Why is true emulation not possible?

Antiviruses and similar analysis engines often face the problem of identifying whether the file is harmful. They often do so with the use of (partial)emulation and as a result often fall prey to the ...