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de.py
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de.py
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from socket import socket
from socket import timeout
from thread import Threading
import Queue
import struct, sys, time
EA_SZ = 4
CMD_REQ = 0
CMD_RES = 1
BPHIT=0
GETBPS=1
SETBPS = 2
GETREGS = 3
SETREGS = 4
READMEM = 5
WRITEMEM = 6
IDA_CMD = 7
IDA_GETNAME=0
IDA_MAKECOMMENT=1
IDA_MAKEBYTE=2
IDA_MAKEWORD=3
IDA_MAKEDWORD=4
IDA_MAKEQWORD=5
IDA_MAKEOWORD=6
IDA_MAKEALIGN=7
IDA_MAKEFLOAT=8
IDA_MAKESTRING=9
IDA_MAKEDOUBLE=10
IDA_MAKECODE=11
IDA_MAKENAME=12
IDA_JUMPTO=13
IDA_SCREENEA=14
IDA_AAREA=15
IDA_CMD_ARGS = {
IDA_GETNAME:["ea"],
IDA_MAKECOMMENT:["ea","str"],
IDA_MAKEBYTE:["ea"],
IDA_MAKEWORD:["ea"],
IDA_MAKEDWORD:["ea"],
IDA_MAKEQWORD:["ea"],
IDA_MAKEOWORD:["ea"],
IDA_MAKEALIGN:["ea","int","int"],
IDA_MAKEFLOAT:["ea"],
IDA_MAKEOWORD:["ea"],
IDA_MAKEOWORD:["ea"],
IDA_MAKENAME:["ea","str"],
IDA_SCREENEA:["ea"],
IDA_JUMPTO:["ea"],
IDA_AAREA:["ea","ea"],
IDA_MAKEFLOAT:["ea","ea"]
}
class RecvThread(threadng.Thread):
def __init__(self, cmd_class, recvQ):
self.queue = recvQ
self.cmd_class = cmd_class
self.handle_queue = True
def run(self):
while self.handle_queue:
if self.queue.empty():
time.sleep(.1)
continue
# process data as buffer
d = queue.get()
data = "" # buffer
cmd = "" # self.parse_data(data)
if cmd and cmd == "req":
self.cmd_class.handle_reqdbg_cmd(cmd)
elif cmd and cmd == "rsp":
self.cmd_class.handle_rspdbg_cmd(cmd)
else:
print "Invalid Command or Type"
class ServerThread(threadng.Thread):
def __init__(self, cmd_class, address="127.0.0.1", port=8080):
threading.Thread.__init__(self)
self.server = (address, port)
self.client = None
self.cmd_class = cmd_class
self.listen = False
self.sock = socket()
self.sock.settimeout(2)
self.sock.bind(self.server)
self.client = None
self.connected = False
def run():
self.listen = True
self.sock.listen(1)
self.client = None
while self.listen:
try:
self.client, addr = self.sock.accept()
self.connected = True
self.recv_traffic()
except:
print "Client Error :("
self.client = None
def send_traffic(self, data):
if self.client:
try:
self.client.send(data)
return True
except:
print "Exception when trying to send data"
return False
def recv_traffic(self):
print "Receiving client: ",str(addr)
while self.listen and self.client:
try:
# need to write a buffer class
data = client.recv(65535)
self.handle_recv(data)
except timeout:
pass
def handle_recv(self, data):
self.cmd_class.add_cmd(data)
def stop_listening(self):
listening = False
class Dlistener:
def __init__(self, vdb, address="127.0.0.1", port=8080):
self.server = (address, port)
self.server_thread = None
self.recvQ = Queue.Queue()
self.recv_thread = None
self.vdb = vdb
def handle_local_cmd(self, cmd_str):
if not self.server_thread:
print "Not listening for clients"
return False
elif self.server_thread.is_connected():
print "Not connected to any clients"
return False
# process cmd str
# create a buffer
data = "" # buffer assigned here
return self.server_thread.send_traffic(data)
def handle_remote_request(self, data):
# add data to Queue
self.recvQ.put(data)
def start_listener(self, server=None, port=None):
if host and port:
self.server = (server, port)
self.server_thread = ServerThread(self.server)
self.server_thread.start()
class Buffer:
def __init__(self):
self.data = ""
self.rptr = 0
self.wptr = 0
def append(self, data):
self.data += data
self.wptr += len(data)
def read(self, data, length):
s = None
if self.rptr+length < self.wptr:
s = data[self.rptr:self.rptr+length]
self.rptr += length
return s
def read_long(self):
long_val = None
if self.rptr+8 < self.wptr:
long_val = struct.unpack(">Q",self.data+self.rptr)[0]
self.rptr += 8
return long_val
def read_int(self):
int_val = None
if self.rptr+4 < self.wptr:
int_val = struct.unpack(">I",self.data+self.rptr)[0]
self.rptr += 4
return int_val
def read_short(self):
short_val = None
if self.rptr+2 < self.wptr:
short_val = struct.unpack(">H",self.data+self.rptr)[0]
self.rptr += 2
return short_val
def read_byte(self):
byte_val = None
if self.rptr+1 < self.wptr:
byte_val = struct.unpack(">B",self.data+self.rptr)[0]
self.rptr += 1
return byte_val
def rewind(self, rew):
# todo make sure this
# matches up
if rew <= self.rptr:
self.rptr -= rew
return True
return False
def reset(self):
self.data = ""
self.self.wptr = 0
self.self.rptr = 0
def write(self, data, length):
if length <= len(data):
self.data += data[0:length]
self.wptr += length
return True
return False
def write_long(self, data):
self.data += struct.pack(">Q",data)
self.wptr += len(struct.pack(">Q",data))
return True
def write_int(self, data):
self.data += struct.pack(">I",data)
self.wptr += len(struct.pack(">I",data))
return True
def write_short(self, data):
self.data += struct.pack(">H",data)
self.wptr += len(struct.pack(">H",data))
return True
def write_byte(self, data):
self.data += struct.pack(">B",data)
self.wptr += len(struct.pack(">B",data))
return True
def get_buf(self):
return data
def get_size(self):
return len(data)
pack_ea = None
unpack_ea =None
if EA_SZ is 8:
pack_ea = lambda x: struct.pack(">Q",x)
unpack_ea = lambda x: struct.unpack(">Q",x)[0]
else:
pack_ea = lambda x: struct.pack(">I",x)
unpack_ea = lambda x: struct.unpack_from(">I",x)[0]
pack_dword = lambda x: struct.pack(">I",x)
unpack_dword = lambda x: struct.unpack_from(">I",x)[0]
byte_x = lambda b,p: chr((b>>(p*8))& 0xff)
get_dword = lambda x: byte_x(x,3)+byte_x(x,2)+byte_x(x,1)+byte_x(x,0)
def build_pkt(typ, cmd, len_data,data):
msg = pack_ea(typ) + pack_ea(cmd) + pack_ea(len_data)+data
return pack_ea(len(msg)+EA_SZ)+msg
def parse_ida_msg(data):
cmd_buffer = data
cmd = unpack_dword(cmd_buffer)
if not cmd in IDA_CMD_ARGS:
return None
template = IDA_CMD_ARGS[cmd]
cnt = 0
cmd_args = []
while cnt < len(template):
if template[cnt] == "int":
cmd_args.append(unpack_dword(cmd_buffer))
cmd_buffer = cmd_buffer[4:]
elif template[cnt] == "ea":
cmd_args.append(unpack_dword(cmd_buffer))
cmd_buffer = cmd_buffer[EA_SZ:]
elif template[cnt] == "str":
cmd_args.append(cmd_buffer)
cnt += 1
return cmd_args
def create_ida_pkt(cmd_type, *args):
if not cmd_type in IDA_CMD_ARGS:
return None
template = IDA_CMD_ARGS[cmd_type]
if len(template) != len(args):
return None
cnt = 0
msg = pack_dword(IDA_CMD) + pack_dword(cmd_type)
while cnt < len(template):
if template[cnt] == "int" and isinstance(args[cnt],int):
msg+=pack_dword(args[cnt])
elif template[cnt] == "ea":
if isinstance(args[cnt],int) or isinstance(args[cnt],long):
msg+=pack_ea(args[cnt])
else:
print "Arg %d is not of type '%s':%s"%(cnt, template[cnt],str(arg[cnt]))
return None
elif template[cnt] == "str":
msg+=str(args[cnt])
else:
print "Arg %d is not of type '%s':%s"%(cnt, template[cnt],str(arg[cnt]))
return None
cnt += 1
return msg
def parse_header(data):
typ,cmd = struct.unpack_from(">II",data)
return typ,cmd,data[2*EA_SZ:]
def parse_response(data, s=None):
typ,cmd,rest = parse_header(data)
print "type: %d cmd: %d rest: %s"%(typ,cmd,repr(rest))
if typ == 1 and cmd == IDA_CMD:
return typ,cmd,parse_ida_msg(rest)
elif cmd == GETREGS and typ == 0:
if s:
f = recv_get_regs()
msg = build_pkt(typ+1, cmd, len(f),f)
s.send(msg)
print repr(msg)
return typ,cmd,recv_get_regs()
elif cmd == SETREGS and typ == 0:
return typ,cmd,recv_set_regs(rest)
elif cmd == GETBPS and typ == 0:
if s:
f = recv_get_bps()
msg = build_pkt(typ+1, cmd, len(f),f)
s.send(msg)
print repr(msg)
return typ,cmd,recv_get_bps()
elif cmd == SETBPS and typ == 0:
return typ,cmd,recv_set_bps(rest)
return typ,cmd,"Could not pares the rest:"+rest
def recv_get_regs():
return "eax:0x1222,ebx:0x28198,ecx:0x89898,edx:0x1222,ebp:0x28198,esp:0x89898,esi:0x1222,edi:0x28198,eflags:0x89898,ei:0x89898"
def create_regs_rsp():
regs = get_regs()
l = len(regs)
data = pack_dword(CMD_RSP)+pack_dword(GETREGS)+pack_dword(l)+regs
return regs
def recv_get_bps(data=''):
return "0x1234,0x234,0x56678,0x5678"
def create_regs_rsp():
bps = get_bps()
l = len(bps)
data = pack_dword(CMD_RSP)+pack_dword(GETBP)+pack_dword(l)+bps
return bps
def set_bps(bps):
print "Recv'd the following regs"
for bp in bps:
print "breakpoint: %s"%(bp)
def recv_set_bps(data):
cmd_len = unpack_ea(data)
print "Recv'd len:", cmd_len
data = data[EA_SZ:]
addrs = data.split(",")
#print addrs
set_bps(addrs)
return addrs
def set_regs(regs):
print "Recv'd the following regs"
#print regs
for r,v in regs:
print "register: %s value %s"%(r,v)
def recv_set_regs(data):
cmd_len = unpack_ea(data)
print "Recv'd len:", cmd_len
data = data[EA_SZ:]
regs = []
reg_data = data.split(",")
for i in reg_data:
#print i
r = i.split(":")
regs.append(r)
set_regs(regs)
return regs
s = socket()
s.bind(("127.0.0.1",8088))
s.listen(10)
def handle_client(s):
while (1):
t = s.recv(4)
le = unpack_dword(t)
print "Expecting %d bytes of data"%(le)
t = s.recv(le)
#print "Recv'd: ", repr(t)
print parse_response(t,s)
def run_server(s):
while (1):
try:
c,a = s.accept()
print "Client connected",a
handle_client(c)
except KeyboardInterrupt:
return
except:
print sys.exc_info()
run_server(s)