pwnforce / usbs Goto Github PK

Hello,

I was trying to rewrite the binary with uSBS. I encountered some problems:

1. Based on the paper, the firmware entry point would be redirected to .newsec (.newtext) section (Am I correct?) Does this mean it's enough to download .newtext section to the target device? Do I still need to dowoload the original binary to the flash memory as well? In the former case, if download the .newtext section to my Nucleo-F401RE board, it traps into hard fault. In the latter case, it runs the original firmware, other than the rewritten one

2. I rewrote the firmware using the command line provided in the readme, it seems that it only translated the binary but didn't instrument ASan. How do I enable ASan instrumentation?

Thanks.

I have viewed you usbs code, and I found that asan.py and usbs.py don't use the translator module,is it something wrong?

It seems that the code in github is not complete. usbs.py doesn't use the maptext and the asan policy,I don't know how to revise it.
Could you please provide some examples or documentation?

Hi,
when I clone the repository and run "make run" to build the docker container, the installation fails due to the package "setuptools", which has to have a version higher than 46.4.0. To fix this issue and be able to run the docker container properly, I changed this line in the Dockerfile:

RUN pip install pathlib2 lief==0.8.0.post7 pwntools==4.3.1 keystone-engine==0.9.2 six==1.16.0
to
RUN pip install pyelftools==0.24 pathlib2 lief==0.8.0.post7 pwntools==4.3.1 keystone-engine==0.9.2 six==1.16.0
This way I am able to build to docker container properly.

Could you change this in the Dockerfile configuration?
Thanks!

How to use it on .bin?