def encrypFile(clsdata):
""" Calculated Encrypted text of the given clear text.
"""
moo = AES.AESModeOfOperation()
cypherkey = [143,194,34,208,145,203,230,143,177,246,97,206,145,92,255,84]
iv = [103,35,148,239,76,213,47,118,255,222,123,176,106,134,98,92]
mode, orig_len, ciph = moo.encrypt(clsdata, moo.modeOfOperation["CBC"],
cypherkey, moo.aes.keySize["SIZE_128"], iv)
encryptedData= bytearray(ciph)
return encryptedData
def aes_login(scr):
DEFAULT_KEY = [
0x58, 0x49, 0x52, 0x47, 0x4f, 0x54, 0x45, 0x43,
0x48, 0x44, 0x45, 0x46, 0x41, 0x55, 0x4c, 0x54
]
DEFAULT_IV = [
0xcb, 0x11, 0x25, 0xe4, 0x38, 0x18, 0xde, 0x1f,
0x82, 0x49, 0xc7, 0xb2, 0xdc, 0x0d, 0xe7, 0xee
]
key = DEFAULT_KEY
decrypto = AES.AESModeOfOperation()
''' Screen Object properties '''
sync_mem = scr.Synchronous
scr.Synchronous = True
''' login '''
scr.Send('login\r')
scr.ReadString('\r',2)
login_list=[]
''' AES.decrypt expects a list of ints. The device sends us a string of hex
bytes, so here I split them into a list and convert them to ints. '''
login_string = scr.ReadString('\r',1).strip('\r\n').encode('ascii')
if(login_string=="ERROR"):
scr.Send('Already LoggedIn\n', True)
else:
login_list = [int(login_string[i:i+2],16) for i in range(0,len(login_string),2)]
dec_string = decrypto.decrypt(login_list,
16,
decrypto.modeOfOperation["CBC"],
key,
decrypto.aes.keySize["SIZE_128"],
DEFAULT_IV)
scr.Send(''.join([i.encode('hex') for i in dec_string]) + '\r')
''' decrypt returns a string in ASCII. I have to do a conversion back to hex.
This converts to hex, then slaps them all together into a nice long string
that the device likes, then sends it.'''
''' restore Screen Object properties '''
scr.Synchronous = sync_mem
def main():
'''These probably should not be plaintext floating around but.. they are.'''
# DEFAULT_KEY = [
# 0x22,0xC7,0x52,0xF4,0x84,0xA0,0x63,0x41,
# 0x3E,0x54,0x55,0x83,0x48,0x0F,0x36,0x98
# ]
DEFAULT_KEY = [
#0x22,0xC7,0x52,0xF4,0x84,0xA0,0x63,0x41,0x3E,0x54,0x55,0x83,0x48,0x0F,0x36,0x98
0x58, 0x49, 0x52, 0x47, 0x4f, 0x54, 0x45, 0x43,0x48, 0x44, 0x45, 0x46, 0x41, 0x55, 0x4c, 0x54
#0x48, 0xc0,0xb4,0xdc,0x36,0x07,0xc2,0x8f,0x3a,0x12,0x91,0x45,0xd1,0xb0,0xf4,0x90
#0x01,0xab,0x23,0xcd,0x45,0xef,0x67,0xab,0x89,0xcd,0x01,0xef,0x23,0xab,0x45,0xcd
]
DEFAULT_IV = [
0xcb, 0x11, 0x25, 0xe4, 0x38, 0x18, 0xde, 0x1f,
0x82, 0x49, 0xc7, 0xb2, 0xdc, 0x0d, 0xe7, 0xee
]
key = []
if crt.Arguments.Count < 1:
key = DEFAULT_KEY
else:
if len(crt.Arguments.GetArg(0)) == 16:
for i in range(0,16):
key.append(ord(crt.Arguments.GetArg(0)[i]))
elif len(crt.Arguments.GetArg(0)) == 32:
for i in range(0,32,2):
key.append(int(crt.Arguments.GetArg(0)[i:i+2],16))
else:
key = DEFAULT_KEY
''' Set up all the SecureCRT Mumbo-jumbo. Initialize our decryption object'''
crt.Screen.Synchronous = True
tab = crt.GetScriptTab()
decrypto = AES.AESModeOfOperation()
''' Try a login '''
tab.Screen.Send('login\r')
tab.Screen.ReadString('\r',2)
''' Someone did care about the robustness of this. So now we try five times
to login, dumping any strings that don't translate well. There are some
cases where this may fail, but this should work for the most part. Five
is the number because Ensemble prints 4 lines of junk at the beginning of
the USB print. '''
login_list=[]
counter = 0
while (not login_list):
if counter > 4:
return
login_string = tab.Screen.ReadString('\r',1).strip('\r\n').encode('ascii')
if not login_string:
return
''' AES.decrypt expects a list of ints. The device sends us a string of hex bytes,
so here I split them into a list and convert them to ints. '''
try:
login_list = [int(login_string[i:i+2],16) for i in range(0,len(login_string),2)]
except:
counter+=1
''' Does the actual decryption. The orin_length is hardcoded because hacky.'''
dec_string = decrypto.decrypt(login_list,
16,
decrypto.modeOfOperation["CBC"],
key,
decrypto.aes.keySize["SIZE_128"],
DEFAULT_IV)
''' decrypt returns a string in ASCII. I have to do a conversion back to hex.
This converts to hex, then slaps them all together into a nice long string
that the device likes, then sends it.'''
tab.Screen.Send(''.join([i.encode('hex') for i in dec_string]) + '\r')
