Practical Binary Analysis - Chapter 5 - CTF walkthrough level 7
31 March 2019 at 00:00
Following the wake of the previous post, here is Practical Binary Analysislevel 7 CTF walkthrough.As we pay attention to the oracle’s hint, we begin to suspect that this level might be two-staged:
$ ./oracle 0fa355cbec64a05f7a5d050e836b1a1f -h Find out what I expect, then trace me for a hint If we try to open the level7 file
1.$ ./lvl7 -bash: ./lvl7: cannot execute binary file: Exec format error $ file lvl7 lvl7: gzip compressed data, last modified: Sat Dec 1 17:30:15 2018, from Unix We can see it’s a gzip format, so we need to decompress it first.