exrs

exrs is a collection of exercises focused on reverse engineering and exploitation, specifically using 64-bit ELF binaries. The tool primarily serves as a training platform, enabling users to solve challenges by reverse engineering binaries to achieve objectives such as executing code or spawning shells. Notably, the exercises enforce a clear separation from traditional cracking methods, emphasizing interaction via standard input/output as if engaging with a remote service while maintaining compatibility with NX and ASLR protections.