Category Archives: shellcode

part 3: cleaning and optimising shellcode In Part 2: Building the shellcode, we created a bind shell on port 4444 which accepts connections from any host and then interacts with “/bin/sh” to facilitate remote code execution. Our shellcode however was littered with null bytes and would probably not be very… →

part 2: building the shellcode In Part 1: Disassembling and Understanding Shellcode we disassembled some shellcode and found out the steps required to create a bind shell. In Part 2, we will take each of these 6 steps, understand them and write assembly instructions to call them. The steps we… →

  About a month ago I signed up for the Securitytube Linux Assembly Expert certification to get a deeper understanding of assembly and GDB. Doing so has helped me understand what is actually going on in the registers and not just relying on “hail-mary” advice like “use pop, pop, ret… →