def rebase_code_entry(self, entry):
seg = get_segm_by_name('ENTRIES')
return nrs.entry_to_offset(entry) + seg.startEA
def rebase_code_entry(self, entry):
seg = get_segm_by_name('ENTRIES')
return nrs.entry_to_offset(entry) + seg.startEA
def load_file(li, netflags, format):
nsis = nsisfile.NSIS.from_path(idaapi.get_input_file_path())
# Create NSIS netnode.
nsis_netnode = idaapi.netnode("$ NSIS", 0, True)
nsis_netnode.hashset("VERSION_MAJOR", nsis.version_major)
nsis_netnode.hashset("VERSION_MINOR", nsis.version_minor)
# Create blocks segments.
for name, n, sclass in BLOCKS:
offset = nsis.header.blocks[n].offset
if offset == 0:
continue
content = nsis.block(n)
# Create block segment
seg = idaapi.segment_t()
seg.startEA = offset
seg.endEA = offset + len(content)
idaapi.add_segm_ex(seg, name, sclass, 0)
idaapi.mem2base(content, offset)
# Add one virtual segment to hold variables.
var_seg = idaapi.segment_t()
var_start = align(nsis.size())
var_seg.startEA = var_start
var_seg.endEA = var_start + 0x1000 # Size chosen arbitrarily, should be enough.
idaapi.add_segm_ex(var_seg, "VARS", "BSS", 0)
# Create standard vars.
for i, v in enumerate(nrs.strings.SYSVAR_NAMES.values()):
idaapi.do_name_anyway(var_seg.startEA + i + 20, "$" + v)
code_base = nsis.header.blocks[fileform.NB_ENTRIES].offset
# Create sections functions.
for i, section in enumerate(nsis.sections):
if section.code == PTR_NONE:
continue
name = nsis.get_string(section.name_ptr)
if not name:
name = "_section" + str(i)
ea = code_base + nrs.entry_to_offset(section.code)
cname = canonize_name(name)
AddEntryPoint(ea, ea, cname, 1)
# Mark pages handlers.
for i, page in enumerate(nsis.pages):
for fn in ["prefunc", "showfunc", "leavefunc"]:
addr = getattr(page, fn)
if addr != PTR_NONE:
name = "_page_{}_{}".format(i, fn)
ea = code_base + nrs.entry_to_offset(addr)
AddEntryPoint(ea, ea, name, 1)
# Mark installer handlers.
for event in [
"Init",
"InstSuccess",
"InstFailed",
"UserAbort",
"GUIInit",
"GUIEnd",
"MouseOverSection",
"VerifyInstDir",
"SelChange",
"RebootFailed",
]:
addr = getattr(nsis.header, "code_on" + event)
if addr != PTR_NONE:
name = "_on" + event
ea = code_base + nrs.entry_to_offset(addr)
AddEntryPoint(ea, ea, name, 1)
# Create strings.
"""
strings_data = nsis.block(fileform.NB_STRINGS)
strings_off = nsis.header.blocks[fileform.NB_STRINGS].offset
i = 0
while i < len(strings_data):
decoded_string, length = \
nrs.strings.decode(strings_data, i, nsis.version_major)
decoded_string = str(decoded_string)
string_name = canonize_name(decoded_string)
idaapi.make_ascii_string(strings_off + i, length, ASCSTR_C)
idaapi.set_cmt(strings_off + i, decoded_string, True)
idaapi.do_name_anyway(strings_off + i, string_name)
i += length
#"""
# Set processor to nsis script.
SetProcessorType("nsis", SETPROC_ALL | SETPROC_FATAL)
return 1
