mirror of
https://github.com/cea-sec/miasm
synced 2026-06-21 13:48:18 +00:00
Fabrice Desclaux
59 lines
1.7 KiB
Python
59 lines
1.7 KiB
Python
from __future__ import print_function
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import random
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from future.utils import viewitems
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from miasm.expression.expression import *
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from miasm.expression.expression_helper import ExprRandom
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from miasm.ir.translators import Translator
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random.seed(0)
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class ExprRandom_OpSubRange(ExprRandom):
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operations_by_args_number = {1: ["-"],
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2: ["<<", ">>",],
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"2+": ["+", "*", "&", "|", "^"],
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}
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print("[+] Compute a random expression:")
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expr = ExprRandom_OpSubRange.get(depth=8)
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print("-> %s" % expr)
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print()
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target_exprs = {lang:Translator.to_language(lang).from_expr(expr)
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for lang in Translator.available_languages()}
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for target_lang, target_expr in viewitems(target_exprs):
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print("[+] Translate in %s:" % target_lang)
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print(target_expr)
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print()
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print("[+] Eval in Python:")
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def memory(addr, size):
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ret = random.randint(0, (1 << size) - 1)
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print("Memory access: @0x%x -> 0x%x" % (addr, ret))
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return ret
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for expr_id in expr.get_r(mem_read=True):
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if isinstance(expr_id, ExprId):
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value = random.randint(0, (1 << expr_id.size) - 1)
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print("Declare var: %s = 0x%x" % (expr_id.name, value))
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globals()[expr_id.name] = value
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print("-> 0x%x" % eval(target_exprs["Python"]))
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print("[+] Validate the Miasm syntax rebuilding")
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exprRebuild = eval(target_exprs["Miasm"])
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assert(expr == exprRebuild)
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a = ExprId("a", 32)
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b = ExprId("b", 32)
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cst1 = ExprInt(1, 32)
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eq_test = ExprOp("==", a, b + cst1)
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for lang in Translator.available_languages():
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translator = Translator.to_language(lang)
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print("Translate to %s:" % lang)
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print(translator.from_expr(eq_test))
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