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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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 ...
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1answer
2k 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 = ...
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1answer
50 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
428 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
109 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
511 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
6k 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
546 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
735 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
211 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 ...
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2answers
320 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: ...
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3answers
3k 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
375 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
3k 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-...
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1answer
1k 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
1k 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 ...
3
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2answers
4k 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
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1answer
619 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
192 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
666 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
436 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
113 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
2k 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....
2
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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
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1answer
7k 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
187 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
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1answer
450 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
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1answer
818 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 ...
4
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3answers
4k 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
1k 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
votes
1answer
2k 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
3k 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
122 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 ...
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0answers
5k 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 ...
1
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1answer
334 views

QtNetwork in IDA's PyQt5

I'm interested in writing a network component to my IDAPython plugin, and QtNetwork looks really attractive, however it isn't include-able from IDAPython shell. Is there a simple way to add that ...
2
votes
1answer
53 views

Immnunity Debugger Python API Incorrect code execution order

PyCommand import immlib def main(args): imm = immlib.Debugger() imm.setBreakpoint(0x411077) imm.setReg("EAX",0x0) imm.log("EAX: {}".format(imm.getRegs()['EAX'])...
0
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1answer
312 views

How to DUMP the full hexa of each function extracted by analysis of binary file?

I used a script python from radare2-bindings to write a code analysing a binary file, i extracted the name , the start address and the size of each function , but i can't dump the hexa of each ...
3
votes
1answer
496 views

Modifying PPID to avoid anti-debugging measure

I'm trying to debug an application that reads the Parent Process Id(PPID), to check if the application is being debugged. It expects the PPID to be the PID of explorer.exe, if it isn't, it quits. To ...
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1answer
2k views

Resolving DLL function names using ordinals

I am trying to figure out how to get the imports of a PE using the PEfile python project (https://github.com/erocarrera/pefile) One thing special about that library is the ordlookup folder. It looks ...
1
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0answers
450 views

To write a Python file to return a JSON represented list [closed]

I need to write a script that uses the r2pipe API to call the radare2 instance, analyze notepad.exe, and have it return a JSON-represented list of each function in the binary along with its virtual ...
1
vote
1answer
389 views

Pydbg setting registers without breakpoint?

In pydbg, is it possible to set a register without having it hit a break point first? Consider the following example break point handler: def handler_breakpoint(mdbg): print "[+]Hit breakpoint" ...
0
votes
1answer
145 views

Get DLL name with PyDBG and System_dll.py?

Is it possible to get the name and path of a DLL that is loaded by the application using PyDBG and System_dll.py? I have a script and PyDBG handles loaded dlls with just: dbg.set_callback(...
2
votes
1answer
498 views

Reverse engineering car stereo panel

I'd like to reverse engineer a car stereo front removable panel. It's a leftover from a broken car stereo. I'd like to do so by connecting the panel's 14 connections to Raspberry Pi 2 model B's GPIO ...
1
vote
1answer
337 views

Can I get different thread registers with PyDBG?

I am writing a python debugger and disassembler using the PyDBG library I have the disassembler part working, but not all of the debugger. Is it possible to use it to return something similar to: [*] ...
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0answers
577 views

Reverse Engineering program written in Python, compiled with “freeze 2 [REWRITE] [closed]

I am already aware of the question: 'Reverse Engineering program written in Python, compiled with “freeze”' I have Immunity Debugger and is this the pyc code and the structures? When I run the ...
8
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2answers
6k views

Good training for IDAPython

I'm familiar with python and IDA in general. I found a few very basic tutorials but nothing that goes through an explanation of the classes used and the full capability set. Near as I can tell the ...
1
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1answer
341 views

Analyse a piece of code using FloatingPoint instructions and calculations

i'm reversing this function doing this floating point calculations which eventually leads to a crucial compare. I need to understand what exactly are the calculations that are made and i want to re-...
1
vote
2answers
1k views

IDA scripting - get local variable by its name

During the debugging I can see all the function's local variables in tab Locals (Debugger -> Debugger Windows -> Locals(HEXRAYS)). For example I have a struct variable a1 0x891E1160:{pBuf=...
7
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1answer
702 views

Adding a toolbar to IDA using PySide

So i'm trying to add a custom toolbar to IDA 6.4 using their PySide download and the IDAAPI. I've tried adding a toolbar by just creating one but since it doesn't have an exec_() method I can't get ...
3
votes
1answer
4k views

Getting user comments with IDAPython API (user_cmts_*)?

How do I call the user_cmts_* functions from the IDAPython API? I am quite new to the SDK and IDAPython, so I'm kind of lost as to what I'm supposed to pass to these functions, as it's not the user-...