3DS CTR Decryptor script

#3DS CTR Decryptor helper script by xerpi

import sys
import glob
import os
import subprocess
from subprocess import check_output

print "3DS CTR Decryptor helper script by xerpi"
print "Enter the file you want to decrypt:"
filename = raw_input();
print "\nCreating ncchinfo.bin..."
try:
    check_output([glob.glob("./ctrKeyGen*")[0], filename])
except Exception:
    print "Failed to open ctrKeyGen, is it here?"
    sys.exit()


print "Done! Now copy the ncchinfo.bin to the root of your SD"
print "And run the Launcher.dat\n"
raw_input("Press Enter to continue...")

print "Extracting .3ds FS... (may take a while)"
try:
    check_output([glob.glob("./ctrtool*")[0], "-p", "--exefs=exefs.encrypted.bin", "--exheader=exheader.encrypted.bin", "--romfs=romfs.encrypted.bin", "%s"%filename])
except Exception:
        print "Failed to open ctrtool, is it here?"
        sys.exit()
print "(ignore the error above) Done!"
print "Once the Launcher.dat has finished, copy all the xorpads here"
raw_input("Press Enter to continue...")

print "XORing exefs..."
try:
    subprocess.call([glob.glob("./padxorer*")[0], "./exefs.encrypted.bin", glob.glob("./*.exefs.xorpad")[0]])
except Exception:
    print "Failed"
    pass
else:
    os.rename("./exefs.encrypted.bin.out", "./exefs.decrypted.bin")

print "XORing exheader..."
try:
    subprocess.call([glob.glob("./padxorer*")[0], "./exheader.encrypted.bin", glob.glob("./*.exheader.xorpad")[0]])
except Exception:
    print "Failed"
    pass
else:
    os.rename("./exheader.encrypted.bin.out", "./exheader.decrypted.bin")

print "XORing romfs..."
try:
    subprocess.call([glob.glob("./padxorer*")[0], "./romfs.encrypted.bin", glob.glob("./*.romfs.xorpad")[0]])
except Exception:
    print "Failed"
    pass
else:
    os.rename("./romfs.encrypted.bin.out", "./romfs.decrypted.bin")

print "Everything finished :D"