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Questions tagged [python]

General-purpose and high-level programming language. Python supports multiple programming paradigms, including object-oriented, imperative and functional programming styles.

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22 views

How to embed PYZ.-00.pyz_extracted folder with entry .py file to generate exe file?

I have decompiled exe using pyextractor script and generated these files: PYZ-00.pyz PYZ-00.pyz_extracted gui pyi_rth_tkinter pyi_rth_multiprocessing pyi_rth_pkgres pyi_rth_win32comgenpy ...
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0answers
62 views

How to generate exe from compiled Python files?

I have extracted compiled files from exe (executable in windows) using PyInstaller Extractor script. In Resultant folder, i have got was pyc files bundled in pyz folder. Then I decompiled files (...
1
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1answer
60 views

picoCTF be-quick-or-be-dead-1 dcrypt simulation with python

This is be-quick-or-be-dead-1 in picoCTF challenge (Download) in this file we can see decrypt_flag() function, this function return this flag: ./be-quick-or-be-dead-1 Calculating key... Done ...
3
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1answer
90 views

String Encoding and Decoding Method

so I came across the following string encoding method in python. def encode(the_string): encoded_string = '' rotations = ord(the_string[-1]) + 5 for i in range(0, len(the_string)): ...
0
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1answer
82 views

How to find out address in binary file (like IDA) with python code only?

I have binary for example https://github.com/andrew-d/static-binaries/blob/master/binaries/linux/x86_64/nmap that I open with IDA , and search some data that I want to find without open IDA ,only ...
0
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0answers
25 views

Can't install sasquatch tool

Ubuntu 16.04 LTS. I'm trying to install sasquatch tool (which should apply patches to the standard unsquashfs utility), but got the issue, every time build process show error in one place: ./build.sh:...
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0answers
56 views

Decoding blob data from a sqlite database into readable format

I have a Sqlite database file that has blob data in it. I only know the the database has blob data and I know what the expected output should be. The blob data's expected output should be a Mac ...
0
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0answers
58 views

How to run python script in IDA PRO after each breakpoint?

I want to write a script which after breakpoint will change some values in running program. I've tried to write script into condition field but it generates error. I'm trying to find something like '...
1
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0answers
199 views

Debugging Ghidra Script [closed]

I want to write a new script for ghidra to extract variuous information from the binary and store it to an external file for future management. I need to perform the analyisis with Ghidra Headless in ...
0
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1answer
52 views

Best python framework/library for constructing the call-graph from binary?

So i have written a python tool using capstone that disassembles the code section of a ELF binary using capstone. now i want to also create and show the call-graph of this binary in a dot format, I ...
3
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2answers
147 views

The structure of the Python's marshaled code object (or .pyc file)

Help me to decipher the Python's marshaled code object. The .pyc files are almost the same: The structure of .pyc files. I have: The code object compiled from the source. The marshaled ...
1
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0answers
128 views

Illegal instruction fault in stack based buffer overflow

I wrote this short C program to practice buffer overflow exploits: #include <stdio.h> #include <string.h> #include <stddef.h> #include <inttypes.h> char *decode(char *s){ ...
2
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1answer
65 views

IDA Python get struct type with dependencies

Over the IDA Gui it is possible to export a local type with dependencies to a header file. For example if i export a struct that has one member from type DWORD than the header file also contains "...
2
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1answer
120 views

ROP chain: Buffer Overflow Return Pointer

I am trying to get a ROP exploit to work on Ubuntu 18.04 LTS 64bit. I have a 64 bit binary (Nx enabled, ASLR disabled) with vuln function as follows: public vuln vuln proc near var_100= byte ptr -...
0
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2answers
77 views

capturing the sub processes's PID of a process

When a program is executed, some processes may be created by the parent process. Especially, if a program is malware, created (or forked or even injected) sub-processes will be named as a systemic ...
2
votes
1answer
248 views

IDA Dump Memory

I am learning how to use IDC Scripting,or IDAPython in IDA for Reversing binary.One day i face this problem: You are given an array of random integer(4-byte integer) lies within the memory .The ...
6
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2answers
2k views

Decompile Python for ELF Binaries

There are several solutions available to extract Pyc files from Windows binaries and then decompile them using uncompyle2 or uncompyle6. However, I have a Linux ELF 64-bit binary which was compiled ...
0
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1answer
276 views

What is the right way to pack a payload with Python3's pwntools

On the tutorial by Megabeets, "A journey into Radare 2 – Part 2: Exploitation", he shows an example of how to create a payload with Python2 # Initial payload payload = "A"*140 # padding ropchain = ...
0
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1answer
40 views

generating byte file with IDA batch command

how to use the command line to generate the byte file using IDA? I know how to get the .asm but not the byte file
4
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0answers
238 views

How do I perform concolic execution with Angr and collect constraints on input?

I have a program that takes a string (with some structure) as input. My aim is to collect information on what values each character in input is compared to as it gets parsed using concolic execution. ...
-1
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1answer
59 views

How to use Python while debugging in IDA

I'm debugging an .exe file in IDA. At a specific point during debugging, I want the Python code to automatically take the data in *(eax+8) and encrypt it with that module and print the result to file ...
2
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2answers
325 views

How can I reverse this recursive function?

This is the python code I wrote of a simple crackme that I have reversed but I am not able to understand what the recursive function here does. def the_process(stored, inp, size): idx = 0 ...
4
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2answers
2k views

Run a python command with “run” on GDB

Hi I'd like to run a python command python -c 'print "\x90"*52' when the program start in GDB, as I would do when I execute : python -c 'print "\x90"*52' | ./myProg . Does anyone knows any way to ...
4
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1answer
305 views

Is there a way to explicitly connect r2pipe to an existing radare2 session that I have open?

I understand that I can execute my script within a session using [0x401000]> . server.py and the pipe will be connected to it when I call r2pipe.open() with no arguments. Ideally I would like to ...
2
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2answers
363 views

IDA: call a function with different arguments

I'm reversing some software and found the function which decrypts some stuff: As you can see it has the password parameter for it which gets decrypted in this function. Function disassembly: ...
0
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1answer
160 views

Pyemu - cannot use PEPyEmu() module, Python

I want to run code from Gray Hat Python book for upx_unpacker. I have downloaded PyEmu, but when I run script I got this error: AttributeError: PEPyEmu instance has no attribute 'load' My script use ...
1
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2answers
255 views

What is a more efficient way to locate disasm patterns in IDAPython?

This is my first "serious" IDAPython script. As I sorta suspected, it's performing waaaayyyyy too slow so I wanted to ask for some pointers on this: fp = MinEA() end = MaxEA() while fp < end: ...
3
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3answers
2k views

Reverse engineering USB peripheral driver

I'm looking to reverse engineer a Windows driver for a printer I have here. I found out a bit about USB sniffing but I don't think Snoopy runs on Windows 7. I know the driver is on my computer ...
1
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0answers
274 views

How to hook Windows syscall ntcreatefile an get path to saved file from notepad? Python 3 [closed]

I need to automate some text editing and encryption. I've been doing some research and it seems uhooker can detect when a file is saved or when a program is closed, but I didn't see any examples to ...
2
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4answers
2k views

How to decompile with Hex Rays via a Python API?

If i have a large set of files and I'd like to run Hex-rays over them to produce output as C - can I do so in python? I see there is IDA Python And I see Hex-rays has a C++ SDK Is there a python Hex-...
1
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1answer
846 views

Processor Type in IDA Python

While using IDA Python and related code of idaapi, the processor type is not returned correctly. Specially we will have MetaPC instead of the exact processor type. This is my code that I used it: ...
1
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1answer
782 views

Extract conditional instructions using IDA python in ARM binaries

While using IDA Python for extract ARM instructions, I noticed that some instructions are not extracted completely. For example, conditional instructions such as BCS or BCC are printed as B. For ...
2
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1answer
2k views

Volatility - manually inspect heap of a process

According to the book The Art of Memory Forensics[1], there is a heaps plugin that can extract out information from the heap memory of a process. I'm using latest version of volatility - 2.6 , but the ...
5
votes
1answer
357 views

How can I get the shared libraries' function calls using angr

I am trying to get all the library function calls that a binary performs in a preorder-DFT traversal of the CFG. I'm able to get the CFG like: import sys, angr import networkx as nx proj = angr....
0
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1answer
138 views

Can anyone help me identify and decode this string? [closed]

Below is a part of a code that I reversed with repy2exe and I want to understand what it does and especially how to decode the value in the "secret" variable: using = [ 'Mg==\n', 'MTA1\n', ...
2
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1answer
428 views

Deducing Protobuf Schema and Datatypes

I have a number of protobuf files but no .proto schema file! cat myfile.pbuf | protoc --decode_raw > outputfile.txt Using the above command, I was able to decode the file into a somewhat readable ...
0
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1answer
324 views

Decode Ascii string values from reverse-engineered lua file

I decompiled a lua file with unluac and it turns out all the string variables are not readable and are instead ascii encoded clues = { { answer = { "\216\173", "\216\177", "\...
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1answer
97 views

Python winappdbg getting process name from event object

I'm developing a debugging automation system using https://github.com/MarioVilas/winappdbg. I would like to retrieve process name from event object. Here is my code: def EventHandler(event): ...
3
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2answers
1k views

IDA - Some issues regarding function's/data/code recognition

I have to write an IDAPython script and I came across many false positives in IDA's function/code/data recognition. Case 1 - Invalid function's end (rpcrt4.dll): In some DLLs (especially in rpcrt4....
1
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3answers
2k views

How to monitor/reverse engineer RS485-connected display device traffic?

Can anyone point me in the right direction for tutorials etc on reverse engineering RS484 connected battery management system? I have a large 12V lithium battery module which has an internal BMS and ...
1
vote
1answer
4k views

IDA python : reading n bytes from an offset

Using python in IDA, I would like tu create a partial file dump. For exemple I would like to dump the data from offset X for a size of Y. I believe I could do it by using the idc.Dword function : ...
2
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1answer
172 views

vivisect parse assembly

I'm using the vivisect library to parse functions within a binary, the documentation for vivisect is quite slim and I was wondering if there was a way to get information about the assembly ...
0
votes
1answer
320 views

Handling of the communication data I received with PySerial (Python)

In a nutshell: I've sniffed the data that goes from the controlling PC to the modem via RS232 serial port by building a little Y-adapter, now I want to figure out how to reverse engineer that data so ...
0
votes
1answer
611 views

Write own obfuscator in Python [closed]

I want to create my own, static obfuscator for any executables. What is the best way to do it with python? How should I start or what sources should I learn to do it? Anyon can give me some tips or ...
3
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2answers
3k views

Is it possible to get a list of user-defined names in IDA?

IDA allows one to rename a program entity (e.g. register, variable, function) using N shortcut. Is it possible to get a list of such user-defined names in IDA?
2
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4answers
975 views

Locate address of function in DLL

I need to locate the address of a function in a DLL at runtime which isn't exported. The DLL in question is vbe7.dll related to Visual Basic (and macros). The function is ___vbaInStr, can be found in ...
2
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1answer
1k views

Getting pydbg working on windows 10

I downloaded the paimei tool and dropped the pydbg package files inside .../paimai/pydbg then installed paimei but I can't seem to get pydbg to work. I keep getting an error with pydasm when trying to ...
5
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2answers
2k views

idapython - Determine if item is code or data

I need to determine whether an IDA's item is code or data. Sometimes, data resides in an executable's code section (virtual functions tables, switch tables and stuff). So in IDA, you can sometimes see ...
2
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0answers
110 views

Restore function key

I have a simple function which looks like that: keyAlphabet = [-1, 16, 32, 127, 61, -32, -31, 43, 0, 88, 2, 5, 7, 112, 64, 69, 96] key = ??? # only keyAlphabet values p = 0x1337 for i in key: ...p*=i ...
1
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0answers
3k views

Plugin directory in IDA?

According to IDA docs, we can put a Python plugin into $HOME/.idapro/plugins/ directory. But when I copied my Python plugin there & restart IDA, IDA still do not see that. What can go wrong, and ...