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Gah, I’m piss poor at encryption. Oh well, that’s why I’m doing these!

$ cat encflag.txt.enc

Alright I don’t even know where to start honestly. The == makes me think base64, so maybe that’ll give me some hints

$ cat encflag.txt.enc | base64 --decode
Salted__"��ܫ���&�#W�z��`�D�L��FB<*�[email protected]�XM[)���W�J:U{(�WLqoracle

Hmm, Salted__ seems to be a decent hint. Research time.

I threw the string into Crack station and that doesn’t recognize the format, gah.

Maybe I should poke around for hints…

$ ls -al
total 32
dr-x------ 3 oracle oracle 4096 Oct 17  2018 .
drwxr-xr-x 8 root   root   4096 May 30  2018 ..
lrwxrwxrwx 1 root   root      9 May 30  2018 .bash_history -> /dev/null
-r-x------ 1 oracle oracle  235 Aug 23  2018 .bash_logout
-r-x------ 1 oracle oracle 3512 Aug 23  2018 .bashrc
-r-x------ 1 oracle oracle   90 Oct  2  2018 encflag.txt.enc
-r-x------ 1 oracle oracle   53 Oct  2  2018 flag.txt
lrwxrwxrwx 1 root   root      9 Oct 17  2018 .mysql_history -> /dev/null
-r-x------ 1 oracle oracle  780 Aug 23  2018 .profile
drwx------ 2 oracle oracle 4096 Aug 23  2018 .ssh

$ cat .bashrc
$ cat  .bashrc
# ~/.bashrc: executed by bash(1) for non-login shells.
# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
# for examples

# If not running interactively, don't do anything
case $- in
    *i*) ;;
      *) return;;

# don't put duplicate lines or lines starting with space in the history.
# See bash(1) for more options

# append to the history file, don't overwrite it
shopt -s histappend

# for setting history length see HISTSIZE and HISTFILESIZE in bash(1)

# check the window size after each command and, if necessary,
# update the values of LINES and COLUMNS.
shopt -s checkwinsize

# If set, the pattern "**" used in a pathname expansion context will
# match all files and zero or more directories and subdirectories.
#shopt -s globstar

# make less more friendly for non-text input files, see lesspipe(1)
#[ -x /usr/bin/lesspipe ] && eval "$(SHELL=/bin/sh lesspipe)"

# set variable identifying the chroot you work in (used in the prompt below)
if [ -z "${debian_chroot:-}" ] && [ -r /etc/debian_chroot ]; then
    debian_chroot=$(cat /etc/debian_chroot)

# set a fancy prompt (non-color, unless we know we "want" color)
case "$TERM" in
    xterm-color) color_prompt=yes;;

# uncomment for a colored prompt, if the terminal has the capability; turned
# off by default to not distract the user: the focus in a terminal window
# should be on the output of commands, not on the prompt

if [ -n "$force_color_prompt" ]; then
    if [ -x /usr/bin/tput ] && tput setaf 1 >&/dev/null; then
	# We have color support; assume it's compliant with Ecma-48
	# (ISO/IEC-6429). (Lack of such support is extremely rare, and such
	# a case would tend to support setf rather than setaf.)

if [ "$color_prompt" = yes ]; then
    PS1='${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\[email protected]\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\]\$ '
    PS1='${debian_chroot:+($debian_chroot)}\[email protected]\h:\w\$ '
unset color_prompt force_color_prompt

# If this is an xterm set the title to [email protected]:dir
case "$TERM" in
    PS1="\[\e]0;${debian_chroot:+($debian_chroot)}\[email protected]\h: \w\a\]$PS1"

# enable color support of ls and also add handy aliases
alias reveal="openssl enc -aes-256-cbc -a -d -in encflag.txt.enc -k 'lp6PWgOwDctq5Yx7ntTmBpOISc'"
if [ -x /usr/bin/dircolors ]; then
    test -r ~/.dircolors && eval "$(dircolors -b ~/.dircolors)" || eval "$(dircolors -b)"
    alias ls='ls --color=auto'
    #alias dir='dir --color=auto'
    #alias vdir='vdir --color=auto'

    #alias grep='grep --color=auto'
    #alias fgrep='fgrep --color=auto'
    #alias egrep='egrep --color=auto'

# some more ls aliases
#alias ll='ls -l'
#alias la='ls -A'
#alias l='ls -CF'

# Alias definitions.
# You may want to put all your additions into a separate file like
# ~/.bash_aliases, instead of adding them here directly.
# See /usr/share/doc/bash-doc/examples in the bash-doc package.

if [ -f ~/.bash_aliases ]; then
    . ~/.bash_aliases

# enable programmable completion features (you don't need to enable
# this, if it's already enabled in /etc/bash.bashrc and /etc/profile
# sources /etc/bash.bashrc).
if ! shopt -oq posix; then
  if [ -f /usr/share/bash-completion/bash_completion ]; then
    . /usr/share/bash-completion/bash_completion
  elif [ -f /etc/bash_completion ]; then
    . /etc/bash_completion
umask 0027
history -c

$ cat .profile
# ~/.profile: executed by the command interpreter for login shells.
# This file is not read by bash(1), if ~/.bash_profile or ~/.bash_login
# exists.
# see /usr/share/doc/bash/examples/startup-files for examples.
# the files are located in the bash-doc package.

# the default umask is set in /etc/profile; for setting the umask
# for ssh logins, install and configure the libpam-umask package.
#umask 022

# if running bash
if [ -n "$BASH_VERSION" ]; then
    # include .bashrc if it exists
    if [ -f "$HOME/.bashrc" ]; then
	. "$HOME/.bashrc"

# set PATH so it includes user's private bin if it exists
if [ -d "$HOME/bin" ] ; then

alias reveal='openssl enc -aes-256-cbc -a -d -in encflag.txt.enc -k '\''lp6PWgOwDctq5Yx7ntTmBpOISc'\'''

Oh shit there we go!

$ reveal

Just how I like encryption to ship, with a hard-coded decoder!

$ cd content && tree