https://github.com/sciencemanx/ctf_import

Run basic functions from stripped binaries cross platform
https://github.com/sciencemanx/ctf_import

Last synced: 2 months ago
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Run basic functions from stripped binaries cross platform

• Host: GitHub
• URL: https://github.com/sciencemanx/ctf_import
• Owner: sciencemanx
• Created: 2016-12-12T21:24:48.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2016-12-13T14:15:13.000Z (about 8 years ago)
• Last Synced: 2024-05-21T13:50:47.422Z (8 months ago)
• Language: C
• Homepage: van.prooyen.com/projects/#ctfimport
• Size: 10.7 KB
• Stars: 108
• Watchers: 5
• Forks: 4
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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• awesome-rainmana - sciencemanx/ctf_import - Run basic functions from stripped binaries cross platform (C)

README

        
# ctf_import

> A small library that allows you to run basic functions from stripped binaries cross platform

[Website](http://van.prooyen.com/projects/#ctfimport)

## Usage

This library is designed for you to be able to quickly call functions from a stripped binary. All you need is the file name, the function offset, and the function signature. You can get these by reverse engineering the binary in IDA or Binary Ninja.

> void *import(char *file, size_t offset)

``` c

#include "ctf_import.h"

int main() {

    int (* fib)(int);

    

    // a.out is a binary with a fibonacci function at offset 0xf00

    fib = (int (*)(int)) import("a.out", 0xf00);

    

    printf("%d %d %d %d %d\n", fib(1), fib(2), fib(3), fib(4), fib(5));

}

```

To compile:

``` bash

$ gcc example.c ctf_import.c -o example

$ ./example

> 1 1 2 3 5

```

## Notes

Although the code will run "cross-OS", it will not run cross architecture. Additionally, this does not handle syscalls and anything that interacts with globals.