# See the commands for Lecture 4 for the basics: "p04_commands.txt".
# We download "secret.zip" and uncompress it in a new directory.

mkdir tutorial_2
cd tutorial_2

curl -O https://www.poirrier.ca/courses/softeng/ex/secret.zip
# or
#   wget https://www.poirrier.ca/courses/softeng/ex/secret.zip

unzip secret.zip

# Let us display the contents of "secret":
hexdump -C secret | less

# Let us display dynamic linking information:
objdump -p secret | less
# or
#   readelf -a secret | less

# Optionally, we can also disassemble the code
# (see Tutorial 2 errata for how to interpret this)

objdump -M intel -d secret | less

# For the mistery app, we can use the "strings" command

strings app | less

# or

strings app > strings.txt

# This commands finds all ASCII strings in the file
# and displays just them. In the output we find, for
# example, this:

#<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
#<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
#<assemblyIdentity type="win32" name="Wine.Wordpad" version="0.0.0.0"/>

# ... which suggests that the app is WordPad