From 4f79a59b64779077efbb1fd0a1b9dc51bdd2c2b4 Mon Sep 17 00:00:00 2001
From: itdominator <1itdominator@gmail.com>
Date: Mon, 24 Oct 2022 20:06:19 -0500
Subject: [PATCH] added notes and nase dir chroot reference script

---
 ... Linux File System with NMAP for Chroot.sh | 59 +++++++++++++++++++
 src/NOTES/Notes.txt                           |  2 +
 2 files changed, 61 insertions(+)
 create mode 100644 src/NOTES/Create Minimal Linux File System with NMAP for Chroot.sh
 create mode 100644 src/NOTES/Notes.txt

diff --git a/src/NOTES/Create Minimal Linux File System with NMAP for Chroot.sh b/src/NOTES/Create Minimal Linux File System with NMAP for Chroot.sh
new file mode 100644
index 0000000..b388f2f
--- /dev/null
+++ b/src/NOTES/Create Minimal Linux File System with NMAP for Chroot.sh	
@@ -0,0 +1,59 @@
+#!/bin/bash
+#more info here http://www.cyberciti.biz/faq/debian-ubuntu-restricting-ssh-user-session-to-a-directory-chrooted-jail/
+
+fs="$PWD/jail"
+echo "Creating ${fs}..."
+mkdir -p ${fs}/{etc,usr/{bin,lib},bin,lib}/
+
+mkdir -p $fs/dev/
+mknod -m 666 $fs/dev/null c 1 3
+mknod -m 666 $fs/dev/tty c 5 0
+mknod -m 666 $fs/dev/zero c 1 5
+mknod -m 666 $fs/dev/random c 1 8
+
+cp -v /lib/ld-linux.so.2 $fs/lib/
+
+chown root:root $fs
+chmod 0755 $fs
+
+wget "http://www.busybox.net/downloads/binaries/latest/busybox-i686" -O ${fs}/bin/busybox
+chmod +x ${fs}/bin/busybox
+
+cd ${fs}/bin
+./busybox  --help | \
+sed -e '1,/^Currently defined functions:/d' \
+    -e 's/[ \t]//g' -e 's/,$//' -e 's/,/\n/g' | \
+while read app ; do
+  if [ "$app" != "" ]; then
+    printf "linking %-12s ...\n" "$app"
+    ln -sf "./busybox" "$app"
+    ls -ld "$app"
+  fi
+done
+
+echo "nameserver 8.8.8.8" > $fs/etc/resolv.conf
+echo "search 8.8.8.8" >> $fs/etc/resolv.conf
+
+#add nmap
+cp -v /usr/bin/nmap $fs/usr/bin/nmap_real
+#create unprivileged nmap script
+cat << EOF > $fs/usr/bin/nmap
+#!/bin/sh
+nmap_real --unprivileged \$*
+EOF
+chmod +x $fs/usr/bin/nmap
+
+mkdir -p $fs/{usr/share/nmap/,etc/services}
+#cp -vr /usr/share/nmap $fs/usr/share/nmap/
+ldd /usr/bin/nmap|while read line;
+do  
+  echo "$line"|\
+  awk '{print $3}'
+done|grep lib|while read line;
+do 
+  cp -v "$line" $fs/usr/lib/;
+done
+
+clear
+echo "welcome to your chroot!"
+chroot $fs sh
\ No newline at end of file
diff --git a/src/NOTES/Notes.txt b/src/NOTES/Notes.txt
new file mode 100644
index 0000000..eab810d
--- /dev/null
+++ b/src/NOTES/Notes.txt
@@ -0,0 +1,2 @@
+# Note: Very good breakdown of an LFS setup. His directory script is interesting too. Just a good source all around. 
+https://www.youtube.com/watch?v=IXA0GNTLf_Q&list=PLHh55M_Kq4OAPznDEcgnkQsbjgvG-QFBR