diff options
| author | Rusty Wagner <rusty@vector35.com> | 2016-10-10 21:28:16 -0400 |
|---|---|---|
| committer | Rusty Wagner <rusty@vector35.com> | 2016-10-10 21:28:16 -0400 |
| commit | 7e4cbbbf09e8dcda20f552a937b458aa09c28cf9 (patch) | |
| tree | 95e0ef73cddbf83936d772a3f0bec64ce6d8c8a3 /python/examples/nds.py | |
| parent | 70dd487931d7bcd75e10753a741fba3299488327 (diff) | |
| parent | cf7832b8025c9acee11304bec0540f8896d56299 (diff) | |
Merge branch 'segments' into dev
Diffstat (limited to 'python/examples/nds.py')
| -rw-r--r-- | python/examples/nds.py | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/python/examples/nds.py b/python/examples/nds.py new file mode 100644 index 00000000..5300018c --- /dev/null +++ b/python/examples/nds.py @@ -0,0 +1,88 @@ +from binaryninja import *
+import struct
+import traceback
+import os
+
+def crc16(data):
+ crc = 0xffff
+ for ch in data:
+ crc ^= ord(ch)
+ for bit in xrange(0, 8):
+ if (crc & 1) == 1:
+ crc = (crc >> 1) ^ 0xa001
+ else:
+ crc >>= 1
+ return crc
+
+class DSView(BinaryView):
+ def __init__(self, data):
+ BinaryView.__init__(self, file_metadata = data.file, parent_view = data)
+ self.raw = data
+
+ @classmethod
+ def is_valid_for_data(self, data):
+ hdr = data.read(0, 0x160)
+ if len(hdr) < 0x160:
+ return False
+ if struct.unpack("<H", hdr[0x15e:0x160])[0] != crc16(hdr[0:0x15e]):
+ return False
+ if struct.unpack("<H", hdr[0x15c:0x15e])[0] != crc16(hdr[0xc0:0x15c]):
+ return False
+ return True
+
+ def init_common(self):
+ self.platform = Architecture["armv7"].standalone_platform
+ self.hdr = self.raw.read(0, 0x160)
+
+ def init_arm9(self):
+ try:
+ self.init_common()
+ self.arm9_offset = struct.unpack("<L", self.hdr[0x20:0x24])[0]
+ self.arm_entry_addr = struct.unpack("<L", self.hdr[0x24:0x28])[0]
+ self.arm9_load_addr = struct.unpack("<L", self.hdr[0x28:0x2C])[0]
+ self.arm9_size = struct.unpack("<L", self.hdr[0x2C:0x30])[0]
+ self.add_auto_segment(self.arm9_load_addr, self.arm9_size, self.arm9_offset, self.arm9_size,
+ SegmentReadable | SegmentExecutable)
+ self.add_entry_point(Architecture['armv7'].standalone_platform, self.arm_entry_addr)
+ return True
+ except:
+ log_error(traceback.format_exc())
+ return False
+
+ def init_arm7(self):
+ try:
+ self.init_common()
+ self.arm7_offset = struct.unpack("<L", self.hdr[0x30:0x34])[0]
+ self.arm_entry_addr = struct.unpack("<L", self.hdr[0x34:0x38])[0]
+ self.arm7_load_addr = struct.unpack("<L", self.hdr[0x38:0x3C])[0]
+ self.arm7_size = struct.unpack("<L", self.hdr[0x3C:0x40])[0]
+ self.add_auto_segment(self.arm7_load_addr, self.arm7_size, self.arm7_offset, self.arm7_size,
+ SegmentReadable | SegmentExecutable)
+ self.add_entry_point(Architecture['armv7'].standalone_platform, self.arm_entry_addr)
+ return True
+ except:
+ log_error(traceback.format_exc())
+ return False
+
+ def perform_is_executable(self):
+ return True
+
+ def perform_get_entry_point(self):
+ return self.arm_entry_addr
+
+class DSARM9View(DSView):
+ name = "DSARM9"
+ long_name = "DS ARM9 ROM"
+
+ def init(self):
+ return self.init_arm9()
+
+class DSARM7View(DSView):
+ name = "DSARM7"
+ long_name = "DS ARM7 ROM"
+
+ def init(self):
+ return self.init_arm7()
+
+DSARM9View.register()
+DSARM7View.register()
|