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BMCTool.py
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BMCTool.py
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from typing import AnyStr, Generic
import demistomock as demisto # noqa: F401
from CommonServerPython import * # noqa: F401
# This tool was developed by "https://github.com/ANSSI-FR/bmc-tools" - Thank you for your hardwork!
from struct import pack, unpack
class BMCContainer(Generic[AnyStr]):
BIN_FILE_HEADER = b"RDP8bmp\x00"
BIN_CONTAINER = b".BIN"
BMC_CONTAINER = b".BMC"
TILE_HEADER_SIZE = {BMC_CONTAINER: 0x14, BIN_CONTAINER: 0xC}
STRIPE_WIDTH = 64
LOG_TYPES = ["[===]", "[+++]", "[---]", "[!!!]"]
PALETTE = bytes(bytearray((
0, 0, 0, 0, 0, 0, 128, 0, 0, 128, 0, 0, 0, 128, 128, 0, 128, 0, 0, 0, 128, 0, 128, 0, 128,
128, 0, 0, 192, 192, 192, 0, 192, 220, 192, 0, 240, 202, 166, 0, 0, 32, 64, 0, 0, 32, 96,
0, 0, 32, 128, 0, 0, 32, 160, 0, 0, 32, 192, 0, 0, 32, 224, 0, 0, 64, 0, 0, 0, 64, 32, 0,
0, 64, 64, 0, 0, 64, 96, 0, 0, 64, 128, 0, 0, 64, 160, 0, 0, 64, 192, 0, 0, 64, 224, 0, 0,
96, 0, 0, 0, 96, 32, 0, 0, 96, 64, 0, 0, 96, 96, 0, 0, 96, 128, 0, 0, 96, 160, 0, 0, 96,
192, 0, 0, 96, 224, 0, 0, 128, 0, 0, 0, 128, 32, 0, 0, 128, 64, 0, 0, 128, 96, 0, 0, 128,
128, 0, 0, 128, 160, 0, 0, 128, 192, 0, 0, 128, 224, 0, 0, 160, 0, 0, 0, 160, 32, 0, 0,
160, 64, 0, 0, 160, 96, 0, 0, 160, 128, 0, 0, 160, 160, 0, 0, 160, 192, 0, 0, 160, 224, 0,
0, 192, 0, 0, 0, 192, 32, 0, 0, 192, 64, 0, 0, 192, 96, 0, 0, 192, 128, 0, 0, 192, 160, 0,
0, 192, 192, 0, 0, 192, 224, 0, 0, 224, 0, 0, 0, 224, 32, 0, 0, 224, 64, 0, 0, 224, 96, 0,
0, 224, 128, 0, 0, 224, 160, 0, 0, 224, 192, 0, 0, 224, 224, 0, 64, 0, 0, 0, 64, 0, 32, 0,
64, 0, 64, 0, 64, 0, 96, 0, 64, 0, 128, 0, 64, 0, 160, 0, 64, 0, 192, 0, 64, 0, 224, 0,
64, 32, 0, 0, 64, 32, 32, 0, 64, 32, 64, 0, 64, 32, 96, 0, 64, 32, 128, 0, 64, 32, 160, 0,
64, 32, 192, 0, 64, 32, 224, 0, 64, 64, 0, 0, 64, 64, 32, 0, 64, 64, 64, 0, 64, 64, 96, 0,
64, 64, 128, 0, 64, 64, 160, 0, 64, 64, 192, 0, 64, 64, 224, 0, 64, 96, 0, 0, 64, 96, 32,
0, 64, 96, 64, 0, 64, 96, 96, 0, 64, 96, 128, 0, 64, 96, 160, 0, 64, 96, 192, 0, 64, 96,
224, 0, 64, 128, 0, 0, 64, 128, 32, 0, 64, 128, 64, 0, 64, 128, 96, 0, 64, 128, 128, 0,
64, 128, 160, 0, 64, 128, 192, 0, 64, 128, 224, 0, 64, 160, 0, 0, 64, 160, 32, 0, 64, 160,
64, 0, 64, 160, 96, 0, 64, 160, 128, 0, 64, 160, 160, 0, 64, 160, 192, 0, 64, 160, 224, 0,
64, 192, 0, 0, 64, 192, 32, 0, 64, 192, 64, 0, 64, 192, 96, 0, 64, 192, 128, 0, 64, 192,
160, 0, 64, 192, 192, 0, 64, 192, 224, 0, 64, 224, 0, 0, 64, 224, 32, 0, 64, 224, 64, 0,
64, 224, 96, 0, 64, 224, 128, 0, 64, 224, 160, 0, 64, 224, 192, 0, 64, 224, 224, 0, 128,
0, 0, 0, 128, 0, 32, 0, 128, 0, 64, 0, 128, 0, 96, 0, 128, 0, 128, 0, 128, 0, 160, 0, 128,
0, 192, 0, 128, 0, 224, 0, 128, 32, 0, 0, 128, 32, 32, 0, 128, 32, 64, 0, 128, 32, 96, 0,
128, 32, 128, 0, 128, 32, 160, 0, 128, 32, 192, 0, 128, 32, 224, 0, 128, 64, 0, 0, 128,
64, 32, 0, 128, 64, 64, 0, 128, 64, 96, 0, 128, 64, 128, 0, 128, 64, 160, 0, 128, 64, 192,
0, 128, 64, 224, 0, 128, 96, 0, 0, 128, 96, 32, 0, 128, 96, 64, 0, 128, 96, 96, 0, 128,
96, 128, 0, 128, 96, 160, 0, 128, 96, 192, 0, 128, 96, 224, 0, 128, 128, 0, 0, 128, 128,
32, 0, 128, 128, 64, 0, 128, 128, 96, 0, 128, 128, 128, 0, 128, 128, 160, 0, 128, 128,
192, 0, 128, 128, 224, 0, 128, 160, 0, 0, 128, 160, 32, 0, 128, 160, 64, 0, 128, 160, 96,
0, 128, 160, 128, 0, 128, 160, 160, 0, 128, 160, 192, 0, 128, 160, 224, 0, 128, 192, 0, 0,
128, 192, 32, 0, 128, 192, 64, 0, 128, 192, 96, 0, 128, 192, 128, 0, 128, 192, 160, 0,
128, 192, 192, 0, 128, 192, 224, 0, 128, 224, 0, 0, 128, 224, 32, 0, 128, 224, 64, 0, 128,
224, 96, 0, 128, 224, 128, 0, 128, 224, 160, 0, 128, 224, 192, 0, 128, 224, 224, 0, 192,
0, 0, 0, 192, 0, 32, 0, 192, 0, 64, 0, 192, 0, 96, 0, 192, 0, 128, 0, 192, 0, 160, 0, 192,
0, 192, 0, 192, 0, 224, 0, 192, 32, 0, 0, 192, 32, 32, 0, 192, 32, 64, 0, 192, 32, 96, 0,
192, 32, 128, 0, 192, 32, 160, 0, 192, 32, 192, 0, 192, 32, 224, 0, 192, 64, 0, 0, 192,
64, 32, 0, 192, 64, 64, 0, 192, 64, 96, 0, 192, 64, 128, 0, 192, 64, 160, 0, 192, 64, 192,
0, 192, 64, 224, 0, 192, 96, 0, 0, 192, 96, 32, 0, 192, 96, 64, 0, 192, 96, 96, 0, 192,
96, 128, 0, 192, 96, 160, 0, 192, 96, 192, 0, 192, 96, 224, 0, 192, 128, 0, 0, 192, 128,
32, 0, 192, 128, 64, 0, 192, 128, 96, 0, 192, 128, 128, 0, 192, 128, 160, 0, 192, 128,
192, 0, 192, 128, 224, 0, 192, 160, 0, 0, 192, 160, 32, 0, 192, 160, 64, 0, 192, 160, 96,
0, 192, 160, 128, 0, 192, 160, 160, 0, 192, 160, 192, 0, 192, 160, 224, 0, 192, 192, 0, 0,
192, 192, 32, 0, 192, 192, 64, 0, 192, 192, 96, 0, 192, 192, 128, 0, 192, 192, 160, 0,
240, 251, 255, 0, 164, 160, 160, 0, 128, 128, 128, 0, 0, 0, 255, 0, 0, 255, 0, 0, 0, 255,
255, 0, 255, 0, 0, 0, 255, 0, 255, 0, 255, 255, 0, 0, 255, 255, 255, 0)))
COLOR_BLACK = b"\x00"
COLOR_WHITE = b"\xFF"
def __init__(self, verbose=False, count=0, old=False, big=False, width=64):
self.bdat = b""
self.o_bmps = []
self.bmps = []
self.btype = b""
self.cnt = count
self.fname: str = ""
self.oldsave = old
self.pal = False
self.verb = verbose
self.big = big
self.STRIPE_WIDTH = width
if count > 0:
self.b_log("debug", True, f"At most {count} tiles will be processed.")
if old:
self.b_log("debug", True, "Old data will also be saved in separate files.")
def b_log(self, ltype, verbose, lmsg):
log_type = {"info": demisto.info,
"debug": demisto.debug,
"error": demisto.error
}
if verbose or self.verb:
log_type[ltype](lmsg)
return True
def b_import(self, fname):
if len(self.bdat) > 0:
self.b_log("error", False, "Data is already waiting to be processed; aborting.")
return False
with open(fname, "rb") as f:
self.bdat = f.read()
if len(self.bdat) == 0:
self.b_log("error", False, "Unable to retrieve file contents; aborting.")
return False
self.fname = fname
self.btype = self.BMC_CONTAINER
if self.bdat[:len(self.BIN_FILE_HEADER)] == self.BIN_FILE_HEADER:
unpacked_bytes = unpack("<L", self.bdat[len(self.BIN_FILE_HEADER):len(self.BIN_FILE_HEADER) + 4])[0]
self.b_log("info", True, f"Subsequent header version: {unpacked_bytes}.")
self.bdat = self.bdat[len(self.BIN_FILE_HEADER) + 4:]
self.btype = self.BIN_CONTAINER
self.b_log("debug", True, f"Successfully loaded '{self.fname}' as a {self.btype.decode()} container.")
return True
else:
return False
def b_process(self):
"""Extracts tiles from bmc container
Returns:
boolean: Result of tiles extraction
"""
if len(self.bdat) == 0:
self.b_log("error", False, "Nothing to process.")
return False
bl = 0
while len(self.bdat) > 0:
o_bmp = b""
t_hdr = self.bdat[:self.TILE_HEADER_SIZE[self.btype]]
key1, key2, t_width, t_height = unpack("<LLHH", t_hdr[:0xC])
if self.btype == self.BIN_CONTAINER:
bl = 4 * t_width * t_height
t_bmp = self.b_parse_rgb32b(self.bdat[len(t_hdr):len(t_hdr) + bl])
elif self.btype == self.BMC_CONTAINER:
t_bmp = ""
t_len, t_params = unpack("<LL", t_hdr[-0x8:])
if t_params & 0x08: # This bit is always ONE when relevant data is smaller than expected data,
# thus it is most likely the "compression" bit flag.
if bl == 0:
if "22.bmc" in self.fname:
bl = 64 * 64 * 2
elif "24.bmc" in self.fname:
bl = 64 * 64 * 4
elif "2.bmc" in self.fname:
bl = 64 * 64
else:
for b in [1, 2, 4]:
if len(self.bdat) < len(t_hdr) + 64 * 64 * b + 8:
break
if unpack("<H", self.bdat[len(t_hdr) + 64 * 64 * b + 8:][:2])[0] == 64:
bl = 64 * 64 * b
break
if bl == 0:
self.b_log("error", False,
"Unable to determine data pattern size; exiting before throwing any error!")
return False
o_bmp = b""
t_bmp = self.b_uncompress(self.bdat[len(t_hdr):len(t_hdr) + t_len], bl // (64 * 64))
if len(t_bmp) > 0:
if len(t_bmp) != t_width * t_height * bl // (64 * 64):
self.b_log("error", False, (f"Uncompressed tile data seems bogus (uncompressed {len(t_bmp)} bytes "
f"while expecting {t_width * t_height * bl // (64 * 64)}). "
f"Discarding tile."
))
t_bmp = b""
else:
t_bmp = self.b_parse_rgb565(t_bmp)
else:
cf = t_len // (t_width * t_height)
funcdict = {
'4': self.b_parse_rgb32b,
'3': self.b_parse_rgb24b,
'2': self.b_parse_rgb565,
}
try:
t_bmp = funcdict[str(cf)](self.bdat[len(t_hdr):len(t_hdr) + cf * t_width * t_height])
if t_height != 64:
o_bmp = self.PALETTE + self.bdat[
len(t_hdr) + cf * t_width * t_height:len(t_hdr) + cf * 64 * 64]
except KeyError:
if cf == 1:
self.pal = True
t_bmp = self.PALETTE + self.bdat[len(t_hdr):len(t_hdr) + cf * t_width * t_height]
else:
self.b_log("error", False, f"Unexpected bpp {8*cf} found during processing; aborting.")
bl = cf * 64 * 64
if len(t_bmp) > 0:
self.bmps.append(t_bmp)
if len(o_bmp) > 0:
self.o_bmps.append(o_bmp)
if len(self.bmps) % 100 == 0:
self.b_log("debug", True, f"{len(self.bmps)} tiles successfully extracted so far.")
self.bdat = self.bdat[len(t_hdr) + bl:]
if self.cnt != 0 and len(self.bmps) == self.cnt:
break
self.b_log("debug", False, f"{len(self.bmps)} tiles successfully extracted in the end.")
return True
def b_parse_rgb565(self, data):
d_out = b""
while len(data) > 0:
pxl = unpack("<H", data[:2])[0]
bl = ((pxl >> 8) & 0xF8) | ((pxl >> 13) & 0x07)
gr = ((pxl >> 3) & 0xFC) | ((pxl >> 9) & 0x03)
re = ((pxl << 3) & 0xF8) | ((pxl >> 2) & 0x07)
d_out += bytearray((re, gr, bl, 255))
data = data[2:]
return bytes(d_out)
def b_parse_rgb32b(self, data):
d_out = b""
d_buf = b""
while len(data) > 0:
if self.btype == self.BIN_CONTAINER:
d_buf += data[:3] + b"\xFF"
if len(d_buf) == 256:
d_out = d_buf + d_out
d_buf = b""
else:
d_out += data[:3] + b"\xFF"
data = data[4:]
return d_out
def b_parse_rgb24b(self, data):
d_out = b""
d_buf = b""
while len(data) > 0:
if self.btype == self.BIN_CONTAINER:
d_buf += data[:3] + b"\xFF"
if len(d_buf) == 256:
d_out = d_buf + d_out
d_buf = b""
else:
d_out += data[:3] + b"\xFF"
data = data[3:]
return d_out
def b_unrle(self, data):
if len(data) == 0:
return (-1, 1, 0)
x = ord(data[0:1])
if (x & 0xF0) == 0xF0:
if x in [0xF5, 0xFB, 0xFC, 0xFF]:
return (-1, 2, x)
elif x in [0xFD, 0xFE]:
return (x, 0, 1)
elif x in [0xF9, 0xFA]:
return (x, 8, 1)
elif len(data) < 3:
return (-1, 1, 0)
else:
c = unpack("<H", data[1:3])[0]
return (x, c, 3)
elif (x & 0xE0) == 0xA0:
return (-1, 2, x)
else:
if (x & 0x80) == 0x00 or (x & 0xE0) == 0x80:
c = x & 0x1F
x = x & 0xE0
o = 32
else:
c = x & 0x0F
x = x & 0xF0
o = 16
if x in [0x40, 0xD0]:
c *= 8
o = 1
if c == 0:
if len(data) < 2:
return (-1, 1, 0)
else:
c = ord(data[1:2]) + o
o = 2
else:
o = 1
return (x, c, o)
return (-1, 3, 0)
def b_uncompress(self, data, bbp):
d_out = b""
bro = -1
fgc = self.COLOR_WHITE * bbp
while len(data) > 0:
cmd, rl, sz = self.b_unrle(data[:3])
if cmd == -1:
if rl == 1:
self.b_log("error", False, "Unexpected end of compressed stream. Skipping tile.")
elif rl == 2:
self.b_log("error", False,
f"Unexpected decompression command encountered (0x{sz:02x}). Skipping tile.")
else:
self.b_log("error", False, "Unhandled case in decompression routine. Skipping tile.")
return b""
data = data[sz:]
if cmd in [0x00, 0xF0]:
if len(d_out) < 64 * bbp:
if bro == 0:
d_out += fgc
rl -= 1
d_out += (self.COLOR_BLACK * bbp) * rl
else:
if bro > 0:
c = d_out[-64 * bbp:][:bbp]
for i in range(bbp):
d_out += bytearray((ord(c[i:i + 1]) ^ ord(fgc[i:i + 1]),))
rl -= 1
while rl > 0:
d_out += d_out[-64 * bbp:][:bbp]
rl -= 1
bro = len(d_out) // (64 * bbp)
elif cmd in [0x20, 0xC0, 0xF1, 0xF6]:
if cmd in [0xC0, 0xF6]:
if len(data) < bbp:
self.b_log("error", False,
f"Unexpected end of compressed stream. Skipping tile. ({cmd}, {rl})")
return b""
fgc = data[:bbp]
data = data[bbp:]
if len(d_out) < 64 * bbp:
d_out += fgc * rl
else:
while rl > 0:
c = d_out[-64 * bbp:][:bbp]
for i in range(bbp):
d_out += bytearray((ord(c[i:i + 1]) ^ ord(fgc[i:i + 1]),))
rl -= 1
elif cmd in [0xE0, 0xF8]:
if len(data) < 2 * bbp:
self.b_log("error", False, "Unexpected end of compressed stream. Skipping tile.")
return b""
d_out += data[:2 * bbp] * rl
data = data[2 * bbp:]
elif cmd in [0x60, 0xF3]:
if len(data) < bbp:
self.b_log("error", False, "Unexpected end of compressed stream. Skipping tile.")
return b""
d_out += data[:bbp] * rl
data = data[bbp:]
elif cmd in [0x40, 0xD0, 0xF2, 0xF7, 0xF9, 0xFA]:
if cmd in [0xD0, 0xF7]:
if len(data) < bbp:
self.b_log("error", False, "Unexpected end of compressed stream. Skipping tile.")
return b""
fgc = data[:bbp]
data = data[bbp:]
if cmd == 0xF9:
msk = b"\x03"
ml = 1
elif cmd == 0xFA:
msk = b"\x05"
ml = 1
else:
ml = (rl // 8) + 1 if rl % 8 != 0 else rl // 8
if len(data) < ml:
self.b_log("error", False, "Unexpected end of compressed stream. Skipping tile.")
return b""
msk = data[:ml]
data = data[ml:]
k = 0
while rl > 0:
if (k % 8) == 0:
m = ord(msk[k // 8:][:1])
b = m & (0x1 << (k % 8))
if len(d_out) < 64 * bbp:
if b == 0:
d_out += (self.COLOR_BLACK * bbp)
else:
d_out += fgc
else:
c = d_out[-64 * bbp:][:bbp]
if b == 0:
d_out += c
else:
for i in range(bbp):
d_out += bytearray((ord(c[i:i + 1]) ^ ord(fgc[i:i + 1]),))
k += 1
rl -= 1
elif cmd in [0x80, 0xF4]:
if len(data) < bbp * rl:
self.b_log("error", False, "Unexpected end of compressed stream. Skipping tile.")
return b""
d_out += data[:rl * bbp]
data = data[rl * bbp:]
elif cmd == 0xFD:
d_out += (self.COLOR_WHITE * bbp)
elif cmd == 0xFE:
d_out += (self.COLOR_BLACK * bbp)
else:
self.b_log("error", False, f"Unhandled decompression command (0x{cmd:02x}). Skipping tile.")
return b""
if cmd not in [0x00, 0xF0]:
bro = -1
return d_out
def b_export(self, name):
self.fname = name
# Removed tile creation from these lines
self.b_log("info", False, f"Successfully exported {len(self.bmps)} files.")
if self.big:
pad: bytes = b"\xFF"
if not self.pal:
pad *= 4
for i in range(len(self.bmps)):
if self.pal:
self.bmps[i] = self.bmps[i][len(self.PALETTE):]
while len(self.bmps[i]) != 64 * 64 * len(pad):
self.bmps[i] += pad * 64
w: int = 64 * len(self.bmps)
h = 64
if len(self.bmps) // self.STRIPE_WIDTH > 0:
m = len(self.bmps) % self.STRIPE_WIDTH
if m != 0:
for _ in range(self.STRIPE_WIDTH - m):
self.bmps.append(pad * 64 * 64)
w = self.STRIPE_WIDTH * 64
h *= len(self.bmps) // self.STRIPE_WIDTH
c_bmp = b"" if not self.pal else self.PALETTE
if self.btype == self.BIN_CONTAINER:
def collage_builder(x, a=self, PAD=len(pad), WIDTH=range(w // 64)):
return b"".join([b"".join([a.bmps[a.STRIPE_WIDTH * (x + 1) - 1 - k][64 * PAD * j:64 * PAD * (j + 1)]
for k in WIDTH]) for j in range(64)])
else:
def collage_builder(x, a=self, PAD=len(pad), WIDTH=range(w // 64)):
return b"".join([b"".join([a.bmps[a.STRIPE_WIDTH * x + k][64 * PAD * j:64 * PAD * (j + 1)]
for k in WIDTH]) for j in range(64)])
c_bmp += b''.join(map(collage_builder, range(h // 64)))
self.b_write(f"{self.fname[:-4]}_collage.bmp", self.b_export_bmp(w, h, c_bmp))
self.b_log("info", False, "Successfully exported collage file.")
def b_export_bmp(self, width, height, data):
if not self.pal:
return b"BM" + pack("<L", len(data) + 122) + b"\x00\x00\x00\x00\x7A\x00\x00\x00\x6C\x00\x00\x00" + pack(
"<L", width) + pack("<L", height) + b"\x01\x00\x20\x00\x03\x00\x00\x00" + pack("<L",
len(data)) + b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFF\x00\x00\xFF\x00\x00\xFF\x00\x00\x00\x00\x00\x00\xFF niW" + ( # noqa: E501
b"\x00" * 36) + b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + data # noqa: E126
else:
return b"BM" + pack("<L", len(data) + 0x36) + b"\x00\x00\x00\x00\x36\x04\x00\x00\x28\x00\x00\x00" + pack(
"<L", width) + pack("<L", height) + b"\x01\x00\x08\x00\x00\x00\x00\x00" + pack("<L",
len(data) - 0x400) + b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" + data # noqa: E501
def b_write(self, fname, data):
collage = fileResult(fname, data)
return_results(collage)
def b_flush(self):
self.bdat = b""
self.bmps = []
self.o_bmps = []
def main():
args = demisto.args()
verbose = args.get("verbose", False)
width = int(args.get("width", 64))
source = args.get("EntryID", '')
try:
bmcc = BMCContainer(verbose=verbose, count=-1, old=False, big=True, width=width)
if not source:
# If the user didn't specify a path to a specific file(s) the script will grab .bin files from context
sources = []
files = argToList(demisto.context().get('File'))
for bin_file in files:
file = demisto.getFilePath(bin_file.get("EntryID"))
if file.get("name").endswith(('bin', 'bmc')):
sources.append(file)
else:
sources = [demisto.getFilePath(source)]
for source in sources:
if bmcc.b_import(source.get("path")):
bmcc.b_process()
bmcc.b_export(source.get("name"))
bmcc.b_flush()
del bmcc
results = CommandResults(
outputs_prefix='Collages',
outputs=sources
)
return_results(results)
except Exception as e:
return_error(f'Failed to parse BMC cache file. Problem: {str(e)}')
if __name__ in ('__builtin__', 'builtins', '__main__'):
main()