![]() That’s why I couldn’t just call functions within the executable itself. Note that I had to limit the search to GOT functions because I needed a memory address that holds a pointer to a function, exactly like the vtable behaves. In order to deal with that, I wrote a script that returns all the GOT functions whose pointers are completely printable. This is pretty problematic because it drastically reduces the leverage of this attack, in effect, allowing us to only pass printable pointers. Because of the call to filtertext here, it is not possible to send a message with unprintable characters, and the size of the message is limited to 260 bytes. Let’s rewind into the limitations for a second. So, we can both control the function that is called, and even choose an argument to pass it! Neato’.ĭemorecord itself is initialized only once at the start of the game and is of type gzstream : stream I quickly noticed that reading data from the client is done using functions like getstring and getint, etc. So I started going over the various updates that can be sent from the client, for instance, sending a text message or the player’s position on the map. This is the function that, according to the developers, does “server-side processing of updates”, looks like a good place to start. Pretty quickly I came across the process function at server.cpp. Right from the beginning I was looking for the code that takes input from the client and looked for ways to meddle with it, essentially providing unexpected data to the server. So I opened up the game’s code and started to get familiar with the codebase. Escalating to admin, crashing the server, or writing some hacks (which I did by the way) were not what I was looking for. There’s also the possibilities of client →client, or server →client, but they both tend to be easier as the client is usually written in a more trustful manner. DownloadĪssaultCube Portable is available for immediate download from the AssaultCube Portable homepage.The goal was clear and straightforward, achieving Remote Code Execution Client →Server. And it's in Format, so it automatically works with the Platform including the Menu and Backup Utility. ![]() It supports upgrades by installing right over an existing copy, preserving all settings. Installer / FormatĪssaultCube Portable is packaged in a Installer so it will automatically detect an existing installation when your drive is plugged in. The cooperative editmode makes it possible. Create new maps (virtual worlds) together with other people online.Thanks to the efficient networking code, AssaultCube requires very little bandwith, you can play it with a 56k modem internet connection.AssaultCube is fast and runs on old hardware, with the correct settings you can run it on a P3 800Mhz gf2.FeaturesĪssaultCube is a free and open source first-person shooter with the following features: Update automatically or install from the portable app store in the Platform. And it's open source and completely free. It's packaged in Format so it can easily integrate with the Platform. This version updates AssaultCube to the latest release. With fast-paced, multiplayer online play and cooperative editing of maps, it's a great addition to your portable drive. ![]() AssaultCube is a free first-person-shooter based on the game Cube packaged as a portable app, so you can play on the go. A new version of AssaultCube Portable has been released by. ![]()
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