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#!/usr/bin/env python
#-*- coding:utf-8 -*-
from argparse import ArgumentParser
from miasm2.analysis import debugging, gdbserver
from miasm2.jitter.jitload import vm_load_elf, libimp, preload_elf
from miasm2.analysis.machine import Machine
parser = ArgumentParser(
description="""Sandbox an elf binary with arm engine
(ex: test_jit_arm.py example/md5_arm A684)""")
parser.add_argument("-r", "--log-regs",
help="Log registers value for each instruction",
action="store_true")
parser.add_argument("-m", "--log-mn",
help="Log desassembly conversion for each instruction",
action="store_true")
parser.add_argument("-n", "--log-newbloc",
help="Log basic blocks processed by the Jitter",
action="store_true")
parser.add_argument("-j", "--jitter",
help="Jitter engine. Possible values are : tcc (default), llvm",
default="tcc")
parser.add_argument("-d", "--debugging",
help="Attach a CLI debugguer to the sandboxed programm",
action="store_true")
parser.add_argument("binary",
help="binary to run")
parser.add_argument("addr",
help="start exec on addr")
machine = Machine("arm")
def jit_arm_binary(args):
filepath, entryp = args.binary, int(args.addr, 16)
myjit = machine.jitter(jit_type = args.jitter)
myjit.init_stack()
# Log level (if available with jitter engine)
myjit.jit.log_regs = args.log_regs
myjit.jit.log_mn = args.log_mn
myjit.jit.log_newbloc = args.log_newbloc
elf = vm_load_elf(myjit.vm, filepath)
libs = libimp()
preload_elf(myjit.vm, elf, libs)
myjit.add_lib_handler(libs)
myjit.add_breakpoint(0x1337BEEF, lambda _: exit(0))
regs = myjit.cpu.vm_get_gpreg()
regs['LR'] = 0x1337BEEF
myjit.cpu.vm_set_gpreg(regs)
myjit.init_run(entryp)
# Handle debugging
if args.debugging is True:
dbg = debugging.Debugguer(myjit)
cmd = debugging.DebugCmd(dbg)
cmd.cmdloop()
else:
print(myjit.continue_run())
if __name__ == '__main__':
from sys import stderr
args = parser.parse_args()
jit_arm_binary(args)
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