mirror of
https://github.com/cea-sec/miasm
synced 2026-06-21 13:48:18 +00:00
Camille Mougey
45 lines
1.3 KiB
Python
45 lines
1.3 KiB
Python
import random
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from miasm2.expression.expression import *
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from miasm2.expression.expression_helper import ExprRandom
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from miasm2.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 target_exprs.iteritems():
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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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