https://github.com/coleellis/howto-gdb

Guide on using GDB
https://github.com/coleellis/howto-gdb

Last synced: about 2 months ago
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Guide on using GDB

• Host: GitHub
• URL: https://github.com/coleellis/howto-gdb
• Owner: coleellis
• Created: 2023-10-23T13:59:41.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2023-10-31T15:16:35.000Z (about 1 year ago)
• Last Synced: 2024-09-25T20:43:58.169Z (3 months ago)
• Homepage: https://gdb.coleellis.com
• Size: 689 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Mastering GDB

`gdb` is the most commonly used debugger. The base installation is super user-friendly and offers a rich feature set. It is also very easy to extend with plugins.

Nearly every challenge dissected in this guide used `gdb`, with a few exceptions.

{% hint style="info" %}

`gdb` has a _LOT_ of features. This guide covers the ones that are most commonly used in everyday settings. If you want to read more, check out [this summary guide](https://gist.github.com/integeruser/0c436a64e087b1c43b278761434cbbfa).

{% endhint %}

## Installation

Installation of `gdb` is extremely simple:

```nasm

pip install gdb

```

To extend its feature set, we will also install the `gdb-gef` extension. More information can be found [here](https://github.com/hugsy/gef). GEF allows live previews of the instruction set, the registers, and the stack. This allows us to easily do a dynamic analysis of the binary.

To install GEF, use the following command:

```nasm

$ bash -c "$(wget https://gef.blah.cat/sh -O -)"

```

{% hint style="info" %}

Other plugins out there are equally effective. Notable plugins are [`pwndbg`](https://github.com/pwndbg/pwndbg) and [`peda`](https://github.com/longld/peda).

They all offer very similar feature sets. I personally like GEF the best, but feel free to use whichever one you like. Read [this](https://infosecwriteups.com/pwndbg-gef-peda-one-for-all-and-all-for-one-714d71bf36b8) article if you want to install more than one and build a local version manager.

{% endhint %}

## Usage

We run `gdb` on the binary that we want to analyze. The plugin will automatically run when we run the binary.

```nasm

gdb 

```