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replace.py: Moved replace func,mitm: addr book replace

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Moved the replace function from mitm.py to replace.py.

This implementation is context insensitive for now. It would be
better, to have a mitm class or to pass state information to the
function. Because how else can the MITM code know, whether it gets
passed data to or from the sim card, to or from the phone?
This commit is contained in:
Christina Quast
2015-06-24 15:44:36 +02:00
parent 2cafadb2a1
commit ad6f4d3fd2
2 changed files with 48 additions and 18 deletions
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20
usb_application/mitm.py
View File

@@ -12,6 +12,8 @@ from util import HEX
from constants import *
from apdu_split import Apdu_splitter, apdu_states
from replace import replace
def pattern_match(inpt):
print("Matching inpt", inpt)
if (inpt == ATR_SYSMOCOM1) or (inpt == ATR_STRANGE_SIM):
@@ -38,24 +40,6 @@ def write_phone(dev, resp):
print("WR: ", HEX(resp))
dev.write(PHONE_WR, resp, 10)
def replace(data):
if data is None:
raise MITMReplaceError
else:
try:
if data[0] == 0x3B:
print("*** Replace ATR")
return array('B', NEW_ATR)
elif data[0] == 0x9F:
print("*** Replace return val")
# return array('B', [0x60, 0x00])
elif data == PHONE_BOOK_RESP:
print("*** Replace phone book")
return PHONE_BOOK_RESP_MITM
except ValueError:
print("*** Value error! ")
return data
def do_mitm(dev, sim_emul=True):
if sim_emul == True:
my_class = SmartCardEmulator

46
usb_application/replace.py Executable file
View File

@@ -0,0 +1,46 @@
#!/usr/bin/env python
import array
from constants import *
# Address book entries
name = 'deine mudda'
phone = '0123456789abcdef'
def replace(data):
print(replace.last_req)
if data is None:
raise MITMReplaceError
else:
try:
if data[0] == 0xA0:
print("INS: ", hex(data[1]))
replace.last_req = data
return data
if data[0] == 0x3B:
return data
#print("*** Replace ATR")
#return array('B', NEW_ATR)
elif data[0] == 0x9F:
return data
# print("*** Replace return val")
# return array('B', [0x60, 0x00])
elif replace.last_req[1:5] == array('B', [0xB2, 0x01, 0x04, 0x1A]): # phone book request
print("*** Replace phone book")
# return array('B', [0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0xff, 0xff, 0xff, 0xff, 0x09, 0x81, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0x55, 0xff, 0xff, 0xff, 0xff, 0x90, 0x00])
resp = map(ord, name) + ([0xff]*(12-len(name))) + [len(name) + 1] + [0x81]
for x in range(1,len(phone)/2+1):
list.append(resp, int(phone[x*2-2:2*x:], 16))
resp += ([0xff]*(replace.last_req[4]-len(resp))) + [0x90, 0x00]
return array('B', resp)
except ValueError:
print("*** Value error! ")
return data
replace.last_req = array('B')
if __name__ == '__main__':
print("Replacing PHONE_BOOK_REQ", PHONE_BOOK_REQ, "with", replace(PHONE_BOOK_REQ))
print("Replacing PHONE_BOOK_RESP", PHONE_BOOK_RESP, "with", replace(PHONE_BOOK_RESP))