analysis.md

OS and File security

Once logged on the we are prompted the following message:

$> checksec --file level02
RELRO           STACK CANARY      NX            PIE             RPATH      RUNPATH      FILE
No RELRO        No canary found   NX disabled   No PIE          No RPATH   No RUNPATH   level02

This time RELRO and NX are disabled meaning we could potentially exploit Global offset table this time.

GDB analysis

Useful data on the binary itself.

Binary compilation

Use this command to compile source.c, reproduction source-code of the given binary.

 $> gcc -Wl,-z,norelro -fno-stack-protector -z execstack -o level02 source.c