def continueTransaction(continue_trans_tag=CONTINUE_TRANS_TAG):
log.log('continueTransaction')
continue_tpl = (0xE0, continue_trans_tag)
conn.send([0xDE, 0xD2, 0x00, 0x00], continue_tpl)
while True:
status, buf, uns = getAnswer(False) #Don't ignore unsolicited
if status != 0x9000:
log.logerr('Transaction terminated with status ', hex(status))
return -1, status, buf, uns
tlv = TLVParser(buf)
#optional E6 (Status) template, reporting why Terminal is in wait state
if tlv.tagCount(0xE6) != 0:
log.log('transaction in wait state ', TLVParser(buf))
log.log('PIN Entry is being performed, waiting for user input')
#handling to allow user to break from PIN entry to continue test
print(
'PIN entry modification, press PC key \'A\' to abort, \'B\' to bypass or \'C\' to cancel'
)
while True:
if kbhit():
key = getch()
log.log('key press ', key)
if key == 'a' or key == 'A':
log.logerr('PIN entry aborting')
abortDevice()
break
if key == 'b' or key == 'B':
log.logerr('PIN entry bypassing')
verifyPIN(P1=0xFF)
break
if key == 'c' or key == 'C':
log.logerr('PIN entry cancelling')
verifyPIN(P1=0x00)
break
if conn.is_data_avail():
break # Has user attempted PIN entry, proceed to evaluation of results
continue
else:
#Status result
if tlv.tagCount(0xE3):
log.log('transaction approved')
return TRANSACTION_APPROVED, status, buf, uns
if tlv.tagCount(0xE4):
log.log('online request, transaction must be verified online')
return ONLINE_REQUESTED, status, buf, uns
if tlv.tagCount(0xE5):
log.log('transaction declined')
return TRANSACTION_DECLINED, status, buf, uns
def processEMV(tid):
#Create localtag for transaction
start_trans_tag = [
[(0x9F, 0x02), b'\x00\x00\x00\x00\x50\x00'],
[(0x9A), b'\x04\x01\x01'],
[(0x9C), b'\x00'],
[(0x9F, 0x21), b'\x01\x01\x01'],
[(0x9F, 0x41), b'\x00\x01'],
[(0x5F, 0x2A), b'\x08\x26'],
[(0xDF, 0xA2, 0x18), b'\x00'],
[(0xDF, 0xA2, 0x14), b'\x01'],
[(0xDF, 0xA2, 0x04), b'\x00'] # Manual app selection!!
]
start_templ = (0xE0, start_trans_tag)
#Start transaction
conn.send([0xDE, 0xD1, 0x00, 0x00], start_templ)
while True:
#sleep(1)
#conn.send([0xD0, 0xFF, 0x00, 0x00])
status, buf, uns = getEMVAnswer()
if status != 0x9000:
if status == 0x9F28:
return processMagstripeFallback(tid)
else:
log.logerr('Transaction terminated with status ', hex(status))
return -1
if uns and status == 0x9000:
tlv = TLVParser(buf)
if tlv.tagCount(0xE6) != 0:
log.log('Multi application card!')
continue
else:
log.log('Ignoring unsolicited packet ', tlv)
continue
else:
tlv = TLVParser(buf)
if tlv.tagCount(0x50) > 1 and tlv.tagCount((0x9F, 0x06)) > 1:
# This is app selection stuff
appLabels = tlv.getTag(0x50)
appAIDs = tlv.getTag((0x9F, 0x06))
log.log('We have ', len(appLabels), ' applications')
if len(appLabels) != len(appAIDs):
log.logerr('Invalid response: AID count ', len(appAIDs),
' differs from Labels count ', len(appLabels))
exit(-1)
for i in range(len(appLabels)):
log.log('App ', i + 1, ': AID ', hexlify(appAIDs[i]),
', label ', str(appLabels[i]))
sel = -1
while True:
#sels = input('Choose one app: ')
#try:
# sel = int(sels.strip())
#except:
# print('invalid entry!!!')
#if sel > 0 and sel <= len(appLabels): break
#print(' Invalid selection, please pick valid number! ')
# Note: The below will work for up to 9 apps...
if kbhit():
try:
sel = ord(getch())
except:
print('invalid key!')
#log.log('key press ', sel)
if sel > 0x30 and sel <= 0x30 + len(appLabels):
sel -= 0x30 # to number (0 .. x)
break
elif sel == 27:
conn.send([0xD0, 0xFF, 0x00, 0x00])
status, buf, uns = getAnswer()
log.logerr('Transaction aborted')
return -1
print(' Invalid selection, please pick valid number! ')
if conn.is_data_avail():
status, buf, uns = getEMVAnswer()
if status != 0x9000:
log.logerr('Transaction terminated with status ',
hex(status))
return -1
break
if sel >= 0:
sel = sel - 1
log.log('Selected ', sel)
app_sel_tags = [[(0x50), bytearray(appLabels[sel])],
[(0x9F, 0x06),
bytearray(appAIDs[sel])]]
app_sel_templ = (0xE0, app_sel_tags)
conn.send([0xDE, 0xD2, 0x00, 0x00], app_sel_templ)
log.log('App selected, waiting for response...')
continue
break
#Let's check VSP
tlv = TLVParser(buf)
vspDecrypt(tlv, tid)
#print(TLVParser(buf))
#Continue transaction
continue_tran_tag = [[(0x9F, 0x02), [0x00, 0x00, 0x00, 0x00, 0x54, 0x00]],
[(0x5F, 0x2A), [0x09, 0x78]], [(0xC2), [0x36, 0x35]],
[(0xDF, 0xA2, 0x18), [0x00]],
[(0xDF, 0xA3, 0x07), [0x03, 0xE8]], [(0xC0), [0x01]],
[(0x91),
[
0x37, 0xDD, 0x29, 0x75, 0xC2, 0xB6, 0x68, 0x2D,
0x00, 0x12
]]]
continue_tpl = (0xE0, continue_tran_tag)
conn.send([0xDE, 0xD2, 0x00, 0x00], continue_tpl)
while True:
status, buf, uns = getEMVAnswer()
if status != 0x9000:
log.logerr('Transaction terminated with status ', hex(status))
return -1
tlv = TLVParser(buf)
if uns and status == 0x9000:
#print(tlv)
if tlv.tagCount(0xE6) != 0:
log.log('PIN Entry is being performed, waiting again')
print(
'PIN Entry, press \'A\' to abort, \'B\' to bypass or \'C\' to cancel'
)
while True:
#sleep(1)
validKey = False
if kbhit():
key = getch()
log.log('key press ', key)
if key == 'a' or key == 'A':
log.logerr('aborting')
conn.send([0xD0, 0xFF, 0x00, 0x00])
validKey = True
if key == 'b' or key == 'B':
log.logerr('bypassing')
conn.send([0xDE, 0xD5, 0xFF, 0x01])
validKey = True
if key == 'c' or key == 'C':
log.logerr('cancelling')
conn.send([0xDE, 0xD5, 0x00, 0x00])
validKey = True
if validKey:
status, buf, uns = getAnswer(
stopOnErrors=False
) # Wait for confirmation, then break to wait for response
if status == 0x9000: break
else: continue
else:
continue
if conn.is_data_avail():
break
continue
else:
log.log('Ignoring unsolicited packet ', tlv)
continue
else:
if tlv.tagCount(0xE3):
log.log("Transaction approved offline")
return 1
else:
if tlv.tagCount(0xE5):
log.log("Transaction declined offline")
return 2
else:
break
# If we get here, we received Online Request. Continue with positive response.
conn.send([0xDE, 0xD2, 0x00, 0x00])
status, buf, uns = getEMVAnswer(
True) # Ignore unsolicited automatically here
if status != 0x9000:
log.logerr('Online Request has failed', hex(status))
return -1
tlv = TLVParser(buf)
if tlv.tagCount(0xE3):
log.log("Transaction approved")
return 1
if tlv.tagCount(0xE5):
log.log("Transaction declined")
return 2
return 3
def processTransaction():
req_unsolicited = conn.connect()
if req_unsolicited:
#Receive unsolicited
log.log('Waiting for unsolicited')
status, buf, uns = getAnswer(False)
log.log('Unsolicited', TLVParser(buf))
#Send reset device
conn.send([0xD0, 0x00, 0x00, 0x01])
status, buf, uns = getAnswer()
tlv = TLVParser(buf)
tid = tlv.getTag((0x9F, 0x1e))
if len(tid):
tid = str(tid[0], 'iso8859-1')
log.log('Terminal TID: ', tid)
else:
tid = ''
log.logerr('Invalid TID (or cannot determine TID)!')
#Send clear display
conn.send([0xD2, 0x01, 0x01, 0x01])
status, buf, uns = getAnswer()
#Monitor card and keyboard status
conn.send([0xD0, 0x60, 0x1D, 0x03])
status, buf, uns = getAnswer(False)
ctls = initContactless()
if (ctls):
# Start Contactless transaction
start_ctls_tag = [
[(0x9F, 0x02), b'\x00\x00\x00\x00\x01\x00'],
[(0x9A), b'\x12\x01\x01'],
[(0x9C), b'\x00'],
[(0x9F, 0x21), b'\x01\x01\x01'],
# [(0x9F,0x41), b'\x00\x01' ],
[(0x5F, 0x2A), b'\x08\x26'],
[(0x9F, 0x1A), b'\x08\x26']
]
start_templ = (0xE0, start_ctls_tag)
conn.send([0xC0, 0xA0, 0x01, 0x00], start_templ)
log.log('Starting Contactless transaction')
status, buf, uns = getAnswer()
else:
promptForCard()
log.log('**** WAIT FOR CARD INSERTION / TAP / SWIPE ****')
tranType = 0
result = 0
ignoreSwipe = False
while True:
print(
'Waiting for card event - please tap, insert or swipe. If you wish to perform Manual Entry, press space'
)
while True:
#sleep(1)
if kbhit():
key = getch()
log.log('key press ', key)
if key == ' ':
log.log('manual entry')
if ctls:
# Cancel Contactless first
log.log('Cancelling contactless')
conn.send([0xC0, 0xC0, 0x00, 0x00])
status, buf, uns = getAnswer()
status, buf, uns = getAnswer(
False
) # Ignore unsolicited as the answer WILL BE unsolicited...
performManualEntry(tid)
break
if conn.is_data_avail():
break
continue
if conn.is_data_avail():
status, buf, uns = getAnswer(False) # Get unsolicited ONLY
if uns:
# Check for insertion unsolicited message
tlv = TLVParser(buf)
if tlv.tagCount(0x48):
cardState = EMVCardState(tlv)
magState = MagstripeCardState(tlv)
if ctls and (cardState == EMV_CARD_INSERTED
or magState == MAGSTRIPE_TRACKS_AVAILABLE
): # Ignore failed swipes
# Cancel Contactless first
log.log('Cancelling contactless')
conn.send([0xC0, 0xC0, 0x00, 0x00])
status, buf, uns = getAnswer()
status, buf, uns = getAnswer(
False
) # Ignore unsolicited as the answer WILL BE unsolicited...
if cardState == EMV_CARD_INSERTED:
log.log("Card inserted, process EMV transaction!")
result = processEMV(tid)
tranType = 1
break
else:
if cardState == ERROR_UNKNOWN_CARD:
log.log('Unknown card type ')
continue
if not ignoreSwipe:
if magState == ERROR_UNKNOWN_CARD:
log.logerr(
'Swipe has failed, there are no tracks!')
continue
else:
if magState == MAGSTRIPE_TRACKS_AVAILABLE:
log.log('Card swiped!')
vspDecrypt(tlv, tid)
S1DecryptData(tlv)
tranType = 2
break
log.log("Waiting for next occurrance!")
continue
# Check for unsolicited keyboard status
if tlv.tagCount((0xDF, 0xA2, 0x05)):
kbd_tag_val = tlv.getTag((0xDF, 0xA2, 0x05),
TLVParser.CONVERT_INT)[0]
log.log("Keyboard status, keypress ", hex(kbd_tag_val),
'h')
continue
if tlv.tagCount(0xE3) or tlv.tagCount(0xE5):
log.log("Approved contactless EMV transaction!")
# todo: vsp decrypt!
vspDecrypt(tlv, tid)
S1DecryptData(tlv)
tranType = 4
break
if tlv.tagCount(0xE7):
vspDecrypt(tlv, tid)
S1DecryptData(tlv)
processCtlsContinue()
tranType = 3
break
if tlv.tagCount(0xE4):
vspDecrypt(tlv, tid)
S1DecryptData(tlv)
processCtlsContinue()
tranType = 5
break
if status != 0x9000:
if status == 0x9F33: # Fallforward to ICC / Swipe
promptForCard()
# No need to exit the loop - swipe is not active now
continue
else:
if status == 0x9F34: # Fallforward to ICC only
promptForCard()
# No need to exit the loop - ctls is not active now, but we have to disable swipes
ignoreSwipe = True
continue
log.logerr("Invalid packet detected, ignoring it!")
print('E4: ', tlv.tagCount(0xE4))
print(tlv)
else:
break
# After loop
if tranType == 1:
# If card still inserted, ask for removal
conn.send([0xD0, 0x60, 0x01, 0x00])
status, buf, uns = getAnswer(False) # Get unsolicited
tlv = TLVParser(buf)
if EMVCardState(tlv) == EMV_CARD_INSERTED:
log.log("Card inserted, asking to remove it")
removeEMVCard()
#Reset display - regardless of tx type
conn.send([0xD2, 0x01, 0x01, 0x01])
log.log('*** RESET DISPLAY ***')
status, buf, uns = getAnswer()
def processEMV(tid):
#Create localtag for transaction
start_trans_tag = [[(0x9F, 0x02), b'\x00\x00\x00\x10\x04\x00'],
[(0x9A), b'\x04\x01\x01'], [(0x9C), b'\x00'],
[(0x9F, 0x21), b'\x01\x01\x01'],
[(0x9F, 0x41), b'\x00\x01'], [(0x5F, 0x2A),
b'\x08\x26'],
[(0xDF, 0xA2, 0x18), b'\x00'],
[(0xDF, 0xA2, 0x14), b'\x01'],
[(0xDF, 0xA2, 0x04), b'\x01']]
start_templ = (0xE0, start_trans_tag)
#Start transaction
conn.send([0xDE, 0xD1, 0x00, 0x00], start_templ)
while True:
status, buf, uns = getEMVAnswer()
if status != 0x9000:
if status == 0x9F28:
return processMagstripeFallback(tid)
else:
log.logerr('Transaction terminated with status ', hex(status))
return -1
if uns and status == 0x9000:
tlv = TLVParser(buf)
if tlv.tagCount(0xE6) != 0:
log.log('Multi application card!')
continue
else:
log.log('Ignoring unsolicited packet ', tlv)
continue
else:
break
#Let's check VSP
tlv = TLVParser(buf)
vspDecrypt(tlv, tid)
S1DecryptData(tlv)
#print(TLVParser(buf))
#Continue transaction
continue_tran_tag = [[(0x9F, 0x02), [0x00, 0x00, 0x00, 0x00, 0x54, 0x00]],
[(0x5F, 0x2A), [0x09, 0x78]], [(0xC2), [0x30, 0x30]],
[(0xDF, 0xA2, 0x18), [0x00]],
[(0xDF, 0xA3, 0x07), [0x03, 0xE8]], [(0xC0), [0x01]],
[(0x8A), [0x59, 0x32]],
[(0x91),
[
0x37, 0xDD, 0x29, 0x75, 0xC2, 0xB6, 0x68, 0x2D,
0x00, 0x12
]]]
continue_tpl = (0xE0, continue_tran_tag)
conn.send([0xDE, 0xD2, 0x00, 0x00], continue_tpl)
while True:
status, buf, uns = getEMVAnswer()
if status != 0x9000:
log.logerr('Transaction terminated with status ', hex(status))
return -1
tlv = TLVParser(buf)
if uns and status == 0x9000:
#print(tlv)
if tlv.tagCount(0xE6) != 0:
log.log('PIN Entry is being performed, waiting again')
print(
'PIN Entry, press \'A\' to abort, \'B\' to bypass or \'C\' to cancel'
)
while True:
#sleep(1)
if kbhit():
key = getch()
log.log('key press ', key)
if key == 'a' or key == 'A':
log.logerr('aborting')
conn.send([0xD0, 0xFF, 0x00, 0x00])
break
if key == 'b' or key == 'B':
log.logerr('bypassing')
conn.send([0xDE, 0xD5, 0xFF, 0x01])
status, buf, uns = getAnswer(
) # Wait for confirmation, then break to wait for response
break
if key == 'c' or key == 'C':
log.logerr('cancelling')
conn.send([0xDE, 0xD5, 0x00, 0x00])
status, buf, uns = getAnswer(
) # Wait for confirmation, then break to wait for response
break
if conn.is_data_avail():
break
continue
else:
log.log('Ignoring unsolicited packet ', tlv)
continue
else:
if tlv.tagCount(0xE3):
log.log("Transaction approved offline")
return 1
else:
if tlv.tagCount(0xE5):
log.log("Transaction declined offline")
return 2
else:
break
# If we get here, we received Online Request. Continue with positive response.
conn.send([0xDE, 0xD2, 0x00, 0x00])
status, buf, uns = getEMVAnswer(
True) # Ignore unsolicited automatically here
if status != 0x9000:
log.logerr('Online Request has failed', hex(status))
return -1
tlv = TLVParser(buf)
if tlv.tagCount(0xE3):
log.log("Transaction approved")
return 1
if tlv.tagCount(0xE5):
log.log("Transaction declined")
return 2
return 3
