[Android Software/Hacking General [Developers Only]] thatbigmoose:
ui_print("");
ui_print("*************************");
ui_print("Samsung Galaxy S4 I9505");
ui_print("Pure Nexus Experience");
ui_print("Odexed rom by Janjan");
ui_print("*************************");

ui_print("Wiping Preload ...");
ui_print("*************************");
mount("ext4", "EMMC", "/dev/block/mmcblk0p27", "/preload");
delete_recursive("/preload");

ui_print("Wiping Cache ...");
ui_print("*************************");
mount("ext4", "EMMC", "/dev/block/mmcblk0p18", "/cache");
delete_recursive("/cache");

ui_print("Wiping Dalvik Cache ...");
ui_print("*************************");
mount("ext4", "EMMC", "/dev/block/mmcblk0p29", "/data");
delete_recursive("/data/dalvik-cache");

ui_print("Deleting System ...");
ui_print("*************************");
mount("ext4", "EMMC", "/dev/block/mmcblk0p16", "/system");
delete_recursive("/system");

ui_print("Copying System Files ...");
ui_print("*************************");
package_extract_dir("system", "/system");

ui_print("Copying Data Files ...");
ui_print("*************************");
package_extract_dir("data", "/data");

ui_print("Symlinking ...");
ui_print("*************************");

symlink("busybox", "/system/xbin/[", "/system/xbin/[[",
"/system/xbin/adjtimex", "/system/xbin/arp", "/system/xbin/ash",
"/system/xbin/awk", "/system/xbin/base64", "/system/xbin/basename",
"/system/xbin/bbconfig", "/system/xbin/blkid", "/system/xbin/blockdev",
"/system/xbin/brctl", "/system/xbin/bunzip2", "/system/xbin/bzcat",
"/system/xbin/bzip2", "/system/xbin/cal", "/system/xbin/cat",
"/system/xbin/catv", "/system/xbin/chattr", "/system/xbin/chgrp",
"/system/xbin/chmod", "/system/xbin/chown", "/system/xbin/chroot",
"/system/xbin/clear", "/system/xbin/cmp", "/system/xbin/comm",
"/system/xbin/cp", "/system/xbin/cpio", "/system/xbin/crond",
"/system/xbin/crontab", "/system/xbin/cut", "/system/xbin/date",
"/system/xbin/dc", "/system/xbin/dd", "/system/xbin/depmod",
"/system/xbin/devmem", "/system/xbin/df", "/system/xbin/diff",
"/system/xbin/dirname", "/system/xbin/dmesg", "/system/xbin/dnsd",
"/system/xbin/dos2unix", "/system/xbin/du", "/system/xbin/echo",
"/system/xbin/ed", "/system/xbin/egrep", "/system/xbin/env",
"/system/xbin/expand", "/system/xbin/expr", "/system/xbin/false",
"/system/xbin/fdisk", "/system/xbin/fgrep", "/system/xbin/find",
"/system/xbin/flash_lock", "/system/xbin/flash_unlock",
"/system/xbin/flashcp", "/system/xbin/flock", "/system/xbin/fold",
"/system/xbin/free", "/system/xbin/freeramdisk", "/system/xbin/fsync",
"/system/xbin/ftpget", "/system/xbin/ftpput", "/system/xbin/fuser",
"/system/xbin/getopt", "/system/xbin/grep", "/system/xbin/groups",
"/system/xbin/gunzip", "/system/xbin/gzip", "/system/xbin/halt",
"/system/xbin/head", "/system/xbin/hexdump", "/system/xbin/id",
"/system/xbin/ifconfig", "/system/xbin/inetd", "/system/xbin/insmod",
"/system/xbin/install", "/system/xbin/iostat", "/system/xbin/ip",
"/system/xbin/kill", "/system/xbin/killall", "/system/xbin/killall5",
"/system/xbin/length", "/system/xbin/less", "/system/xbin/ln",
"/system/xbin/losetup", "/system/xbin/ls", "/system/xbin/lsattr",
"/system/xbin/lsmod", "/system/xbin/lsusb", "/system/xbin/lzcat",
"/system/xbin/lzma", "/system/xbin/lzop", "/system/xbin/lzopcat",
"/system/xbin/man", "/system/xbin/md5sum", "/system/xbin/mesg",
"/system/xbin/mkdir", "/system/xbin/mke2fs", "/system/xbin/mkfifo",
"/system/xbin/mkfs.ext2", "/system/xbin/mkfs.vfat",
"/system/xbin/mknod", "/system/xbin/mkswap", "/system/xbin/mktemp",
"/system/xbin/modinfo", "/system/xbin/modprobe", "/system/xbin/more",
"/system/xbin/mount", "/system/xbin/mountpoint", "/system/xbin/mpstat",
"/system/xbin/mv", "/system/xbin/nanddump", "/system/xbin/nandwrite",
"/system/xbin/netstat", "/system/xbin/nice", "/system/xbin/nohup",
"/system/xbin/nslookup", "/system/xbin/ntpd", "/system/xbin/od",
"/system/xbin/patch", "/system/xbin/pgrep", "/system/xbin/pidof",
"/system/xbin/ping", "/system/xbin/pkill", "/system/xbin/pmap",
"/system/xbin/poweroff", "/system/xbin/printenv", "/system/xbin/printf",
"/system/xbin/ps", "/system/xbin/pstree", "/system/xbin/pwd",
"/system/xbin/pwdx", "/system/xbin/rdev", "/system/xbin/readlink",
"/system/xbin/realpath", "/system/xbin/renice", "/system/xbin/reset",
"/system/xbin/resize", "/system/xbin/rev", "/system/xbin/rm",
"/system/xbin/rmdir", "/system/xbin/rmmod", "/system/xbin/route",
"/system/xbin/run-parts", "/system/xbin/rx", "/system/xbin/sed",
"/system/xbin/seq", "/system/xbin/setconsole", "/system/xbin/setserial",
"/system/xbin/setsid", "/system/xbin/sh", "/system/xbin/sha1sum",
"/system/xbin/sha256sum", "/system/xbin/sha512sum",
"/system/xbin/sleep", "/system/xbin/sort", "/system/xbin/split",
"/system/xbin/stat", "/system/xbin/strings", "/system/xbin/stty",
"/system/xbin/sum", "/system/xbin/swapoff", "/system/xbin/swapon",
"/system/xbin/sync", "/system/xbin/sysctl", "/system/xbin/tac",
"/system/xbin/tail", "/system/xbin/tar", "/system/xbin/taskset",
"/system/xbin/tee", "/system/xbin/telnet", "/system/xbin/telnetd",
"/system/xbin/test", "/system/xbin/tftp", "/system/xbin/tftpd",
"/system/xbin/time", "/system/xbin/timeout", "/system/xbin/top",
"/system/xbin/touch", "/system/xbin/tr", "/system/xbin/traceroute",
"/system/xbin/true", "/system/xbin/ttysize", "/system/xbin/tune2fs",
"/system/xbin/umount", "/system/xbin/uname", "/system/xbin/uncompress",
"/system/xbin/unexpand", "/system/xbin/uniq", "/system/xbin/unix2dos",
"/system/xbin/unlzma", "/system/xbin/unlzop", "/system/xbin/unxz",
"/system/xbin/unzip", "/system/xbin/uptime", "/system/xbin/usleep",
"/system/xbin/uudecode", "/system/xbin/uuencode", "/system/xbin/vi",
"/system/xbin/watch", "/system/xbin/wc", "/system/xbin/wget",
"/system/xbin/which", "/system/xbin/whoami", "/system/xbin/xargs",
"/system/xbin/xz", "/system/xbin/xzcat", "/system/xbin/yes",
"/system/xbin/zcat");

symlink("toolbox", "/system/bin/cat");
symlink("toolbox", "/system/bin/chmod");
symlink("toolbox", "/system/bin/chown");
symlink("toolbox", "/system/bin/cmp");
symlink("toolbox", "/system/bin/date");
symlink("toolbox", "/system/bin/dd");
symlink("toolbox", "/system/bin/df");
symlink("toolbox", "/system/bin/dmesg");
symlink("toolbox", "/system/bin/getevent");
symlink("toolbox", "/system/bin/getprop");
symlink("toolbox", "/system/bin/hd");
symlink("toolbox", "/system/bin/id");
symlink("toolbox", "/system/bin/ifconfig");
symlink("toolbox", "/system/bin/iftop");
symlink("toolbox", "/system/bin/insmod");
symlink("toolbox", "/system/bin/ioctl");
symlink("toolbox", "/system/bin/ionice");
symlink("toolbox", "/system/bin/lsof");
symlink("toolbox", "/system/bin/kill");
symlink("toolbox", "/system/bin/ln");
symlink("toolbox", "/system/bin/log");
symlink("toolbox", "/system/bin/ls");
symlink("toolbox", "/system/bin/lsmod");
symlink("toolbox", "/system/bin/lsof");
symlink("toolbox", "/system/bin/md5");
symlink("toolbox", "/system/bin/mkdir");
symlink("toolbox", "/system/bin/mount");
symlink("toolbox", "/system/bin/mv");
symlink("toolbox", "/system/bin/nandread");
symlink("toolbox", "/system/bin/netstat");
symlink("toolbox", "/system/bin/newfs_msdos");
symlink("toolbox", "/system/bin/notify");
symlink("toolbox", "/system/bin/playback");
symlink("toolbox", "/system/bin/printenv");
symlink("toolbox", "/system/bin/ps");
symlink("toolbox", "/system/bin/reboot");
symlink("toolbox", "/system/bin/renice");
symlink("toolbox", "/system/bin/rm");
symlink("toolbox", "/system/bin/rmdir");
symlink("toolbox", "/system/bin/rmmod");
symlink("toolbox", "/system/bin/route");
symlink("toolbox", "/system/bin/schedtop");
symlink("toolbox", "/system/bin/sendevent");
symlink("toolbox", "/system/bin/setconsole");
symlink("toolbox", "/system/bin/setprop");
symlink("toolbox", "/system/bin/sleep");
symlink("toolbox", "/system/bin/smd");
symlink("toolbox", "/system/bin/start");
symlink("toolbox", "/system/bin/stop");
symlink("toolbox", "/system/bin/sync");
symlink("toolbox", "/system/bin/top");
symlink("toolbox", "/system/bin/touch");
symlink("toolbox", "/system/bin/touchinput");
symlink("toolbox", "/system/bin/umount");
symlink("toolbox", "/system/bin/uptime");
symlink("toolbox", "/system/bin/vmstat");
symlink("toolbox", "/system/bin/watchprops");
symlink("toolbox", "/system/bin/wipe");
symlink("dumpstate", "/system/bin/dumpcrash");
symlink("debuggerd", "/system/bin/csview");
symlink("mksh", "/system/bin/sh");
symlink("Roboto-Regular.ttf", "/system/fonts/DroidSans.ttf");
symlink("Roboto-Bold.ttf", "/system/fonts/DroidSans-Bold.ttf");

ui_print("Setting Permissions ...");
ui_print("+++++++++++++++++++++++++");
set_perm_recursive(0, 0, 0755, 0644, "/system");

set_perm_recursive(0, 2000, 0755, 0755, "/system/bin");
set_perm(0, 1000, 04750, "/system/bin/diag_mdlog");
set_perm(0, 3003, 02750, "/system/bin/netcfg");
set_perm(0, 3004, 02755, "/system/bin/ping");
set_perm(0, 0, 0700, "/system/bin/rtcc_init");
set_perm(0, 2000, 06750, "/system/bin/run-as");
set_perm(0, 3003, 06755, "/system/bin/ip");
set_perm(0, 0, 06755, "/system/bin/su");

set_perm_recursive(0, 0, 0755, 0755, "/system/etc/init.d");
set_perm(0, 2000, 0755, "/system/etc/install-recovery.sh");
set_perm(0, 2000, 0550, "/system/etc/init.goldfish.sh");
set_perm(1002, 1002, 0440, "/system/etc/dbus.conf");
set_perm(1014, 2000, 0550, "/system/etc/dhcpcd/dhcpcd-run-hooks");
set_perm_recursive(0, 0, 0755, 0555, "/system/etc/ppp");
set_perm_recursive(1002, 1002, 0755, 0440, "/system/etc/bluetooth");
set_perm(0, 0, 0755, "/system/etc/bluetooth");
set_perm(1000, 1000, 0640, "/system/etc/bluetooth/auto_pairing.conf");
set_perm(3002, 3002, 0444, "/system/etc/bluetooth/blacklist.conf");

set_perm_recursive(0, 2000, 0755, 0644, "/system/vendor");
set_perm(0, 0, 0644, "/system/vendor/etc/audio_effects.conf");
set_perm_recursive(0, 0, 0755, 0644, "/system/vendor/firmware");
set_perm(0, 2000, 0755, "/system/vendor/firmware");
set_perm(0, 2000, 0755, "/system/vendor/lib/hw");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/left_eye-y0-yi45-p0-pi45-r0-ri20.lg_32/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/nose_base-y0-yi45-p0-pi45-r0-ri20.lg_32/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/multi_pose_face_landmark_detectors.7/right_eye-y0-yi45-p0-pi45-r0-ri20.lg_32-2/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-r0-ri30.4a-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-rn30-ri30.5-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/detection/yaw_roll_face_detectors.6/head-y0-yi45-p0-pi45-rp30-ri30.5-v24/full_model.bin");
set_perm(0, 0, 0644, "/system/vendor/pittpatt/models/recognition/face.face.y0-y0-22-b-N/full_model.bin");

set_perm(0, 2000, 0755, "/system/vendor");
set_perm(0, 2000, 0755, "/system/vendor/firmware");
set_perm(0, 2000, 0755, "/system/vendor/lib");
set_perm_recursive(0, 2000, 0755, 0644, "/system/vendor/pittpatt");

run_program("/sbin/busybox", "chmod", "0771", "/data/data");
run_program("/sbin/busybox", "chmod", "0771", "/data/app");

set_perm_recursive(0, 2000, 0755, 0755, "/system/xbin");
set_perm(0, 0, 06755, "/system/xbin/su");
set_perm(0, 1000, 0755, "/system/xbin/busybox");
symlink("/system/xbin/busybox", "/system/bin/busybox");
ui_print("Installing Busybox ...");
ui_print("*************************");
run_program("/system/xbin/busybox", "--install", "-s", "/system/xbin");

show_progress(0.200000, 10);

ui_print("Flashing kernel ...");
ui_print("*************************");
assert(package_extract_file("botimg/boot.img", "/tmp/boot.img"),
write_raw_image("/tmp/boot.img", "/dev/block/mmcblk0p20"),
delete("/tmp/boot.img"));

ui_print("You Are Done ...");
ui_print("Enjoy Pure Google");
ui_print("By Janjan");
ui_print("*************************");
unmount("/system");
unmount("/cache");
unmount("/data");
unmount("/preload");

Best I could find.