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CustomizerExport.py
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CustomizerExport.py
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#?description=Export all the function names, comments and signatures in JSON or MAP so the user can reimport them later on or use them with another tool
#?shortcut=
import json
import os
from com.pnfsoftware.jeb.client.api import IScript
from com.pnfsoftware.jeb.core import RuntimeProjectUtil
from com.pnfsoftware.jeb.core.units import INativeCodeUnit
from com.pnfsoftware.jeb.core.units.codeobject import ICodeObjectUnit, CodeObjectUnitUtil, IPECOFFUnit, IELFUnit
"""
Sample script for JEB Decompiler.
This script exports all the function names, comments and signatures in JSON
or MAP so the user can reimport them later on or use them with another tool.
"""
SECTIONS_HEADER = " Start Length Name Class"
SYMBOLS_HEADER = "Address Publics by Value"
# Functions to help format addr, lengths for the MAP format.
def pad_addr(addr):
"""
Pads the address on 16 chars
"""
addr = hex(addr)[2:].upper()
return "0"*(16-len(addr)) + addr
def pad_length(length):
"""
Pads the length on 18 chars ending with an 'H'
"""
length = hex(length)[2:].upper()
return "0"*(17-len(length)) + length +"H"
def pad_section_number(section_number):
"""
Pads the section number on 4 chars
"""
section_number = hex(section_number)[2:].upper()
return "0"* (4 - len(section_number)) + section_number
# Util to get the first unit of any type
def get_unit(ctx, unit_type):
"""
Retrieves a specific unit
"""
engctx = ctx.getEnginesContext()
if not engctx:
print "Back-end engines not initialized"
return
projects = engctx.getProjects()
if not projects:
print "There is no opened project"
return
# get the first code unit available (code units re interactive units)
units = RuntimeProjectUtil.findUnitsByType(projects[0], unit_type, False)
if not units:
print "No unit available"
return
unit = units[0]
return unit
class CustomizerExport(IScript):
"""
Script class.
"""
def export_json(self, ctx):
"""
Exports the symbols as json with comments and prototypes.
"""
code_unit = get_unit(ctx, INativeCodeUnit)
print "Code unit type: {}".format(type(code_unit))
# Getting all the comments
analyzer = code_unit.getCodeAnalyzer()
model = analyzer.getModel()
comment_manager = model.getCommentManager()
comments = comment_manager.getComments()
# Needed for Java -> pythonic types
comments = dict(comments)
# Getting all the functions
methods = code_unit.getMethods()
function_names = {}
function_prototypes = {}
for method in methods:
addr = method.getAddress()
if addr:
addr = addr[:-1]
function_names[addr] = method.getName(1)
prototype = method.getPrototype()
if prototype is not None:
function_prototypes[addr] = prototype.getSignature(1)
export = {
"comments": comments,
"function_names": function_names,
"function_prototypes": function_prototypes
}
return json.dumps(export)
def export_map(self, ctx, code_obj_unit, file_format):
"""
Exports in the MAP file format produced by linkers.
"""
sections = code_obj_unit.getSections()
sections_dict = {}
export = "\n{}\n".format(SECTIONS_HEADER)
if file_format == "PE":
start = 2
elif file_format == "ELF":
start = 1
else:
print "Unknown file format."
return
for i in range(start, len(sections)):
section_name = sections[i].getName()
sections_dict[section_name] = i
export += " {}:{} {} {} {}\n".format(
pad_section_number(i),
pad_addr(0),
pad_length(int(sections[i].getSizeInMemory())),
section_name,
"CODE"
)
code_unit = get_unit(ctx, INativeCodeUnit)
# Getting all the functions
methods = code_unit.getMethods()
function_names = {}
export += "\n\n {}\n\n".format(SYMBOLS_HEADER)
for method in methods:
addr = method.getAddress()
if addr:
addr = addr[:-1]
# PE MAP exports are offsets
if file_format == "PE":
addr -= (code_unit.getVirtualImageBase() + 0x1000)
function_names[addr] = method.getName(1)
i = 1
util = CodeObjectUnitUtil()
for addr in function_names.keys():
name = function_names[addr]
section = util.findSectionByAddress(code_obj_unit, int(addr, 16))
section_name = section.getName()
export += " 0000{}:{} {}\n".format(
pad_section_number(sections_dict[section_name]),
pad_addr(int(addr, 16)),
name
)
i += 1
return export
def run(self, ctx):
"""
Main script function.
"""
code_obj_unit = get_unit(ctx, ICodeObjectUnit)
# Determines if we are analyzing a PE or an ELF
if isinstance(code_obj_unit, IPECOFFUnit):
file_format = "PE"
elif isinstance(code_obj_unit, IELFUnit):
file_format = "ELF"
else:
print "Unknown file format."
return
export_filename = ctx.displayQuestionBox(
"Export user customizations",
"Export file name",
""
)
export_format = ctx.displayQuestionBox(
"Export user customizations",
"Export format (JSON or MAP)",
"")
if export_format.upper() == "JSON":
if export_filename.split(".")[-1] != "json":
export_filename = export_filename + ".json"
export = self.export_json(ctx)
elif export_format.upper() == "MAP":
if export_filename.split(".")[-1] != "map":
export_filename = export_filename + ".map"
export = self.export_map(ctx, code_obj_unit, file_format)
else:
print "Invalid export format"
return
export_file = open(export_filename, "w")
export_file.write(export)
export_file.close()
print "Export finished."
print "Exported file at {}".format(os.path.join(os.getcwd(), export_filename))