Basic Shellcode — Writeup Vulnerability Analysis The binary reads up to 0x1000 bytes from stdin into a stack buffer and then directly executes it as code via ((void(*)())shellcode)(). There is no...

WriteUp — Control Hijack (Hard) Challenge Source: PwnCollege — Binary Exploitation track Binary: binary-exploitation-control-hijack Objective: Stack smash — overwrite return address to hijack con...

WriteUp — PIE Overflow (Hard) Challenge Source: PwnCollege — Binary Exploitation track Binary: binary-exploitation-pie-overflow Objective: PIE + no debug output + no source. Reverse engineer all ...

WriteUp — First Overflow (Hard) Challenge Source: PwnCollege — Binary Exploitation track Binary: binary-exploitation-first-overflow Objective: Overflow a stack buffer to set win_variable != 0 and...

Detailed Analysis: Pwn.College — Accessing Resources (cIMG) 1. Initial Reconnaissance 1.1. Challenge Goal The /challenge/cimg binary is a parser for .cimg (Custom Image) format files. It is a set...

Reverse Engineering Analysis — Pwn.College: Optimizing for Space 1. General Information Property Value Binary cimg / cimg_optimizing ...

Storage and Retrieval — Writeup Challenge Overview The challenge presents a cimg binary that interprets a custom image format called cIMG (version 3). The goal is to create a .cimg file of less t...

Challenge: cIMG — Bigger Framebuffer (Level 3) Description This level keeps the same structure as the previous one, but the framebuffer is much larger: instead of 4 pixels, the program now expects...

Reverse Engineering Analysis — Pwn.College: Internal State Mini 1. Challenge Description This level introduces a compiled binary (not a Python script like the previous one) that processes images ...

File Format Directives 1. General Information Property Value Binary cimg Architecture x86-64 ELF Goal ...