test/jitter/bad_block.py


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import sys
from miasm.core.utils import decode_hex
from miasm.jitter.csts import PAGE_READ, PAGE_WRITE, EXCEPT_UNK_MNEMO
from miasm.analysis.machine import Machine
from miasm.core.locationdb import LocationDB

def code_sentinelle(jitter):
    jitter.running = False
    jitter.pc = 0
    return True

machine = Machine("x86_32")
loc_db = LocationDB()
jitter = machine.jitter(loc_db, sys.argv[1])

jitter.init_stack()

# nop
# mov eax, 0x42
# XX
data = decode_hex("90b842000000ffff90909090")

# Will raise memory error at 0x40000006

error_raised = False
def raise_me(jitter):
    global error_raised
    error_raised = True
    assert jitter.pc == 0x40000006
    return False

jitter.add_exception_handler(EXCEPT_UNK_MNEMO, raise_me)

run_addr = 0x40000000

jitter.vm.add_memory_page(run_addr, PAGE_READ | PAGE_WRITE, data)

jitter.set_trace_log()
jitter.push_uint32_t(0x1337beef)

jitter.add_breakpoint(0x1337beef, code_sentinelle)

jitter.init_run(run_addr)
jitter.continue_run()

assert error_raised is True