mirror of
https://github.com/vivisect/vivisect
synced 2026-06-08 18:04:23 +00:00
l1berty
50 lines
1.1 KiB
Python
50 lines
1.1 KiB
Python
import sys
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import shlex
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import vtrace
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class ShellcodeLoadNotifier(vtrace.Notifier):
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def __init__(self, db, fname):
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self.db = db
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self.fname = fname
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def notify(self, event, trace):
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if event != vtrace.NOTIFY_BREAK:
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return
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bytez = None
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with open(self.fname, 'rb') as f:
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bytez = f.read()
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va = trace.allocateMemory(len(bytez))
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trace.writeMemory(va, bytez)
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self.db.vprint('Loaded shellcode at address: 0x%x' % va)
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trace.setProgramCounter(va)
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trace.addBreakByAddr(va)
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self.db.deregisterNotifier(vtrace.NOTIFY_BREAK, self)
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def execsc(db, line):
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'''
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Load and execute shellcode stub from file
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Usage: execsc <fname>
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'''
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argv = shlex.split(line)
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if len(argv) != 1:
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return db.do_help('execsc')
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cmd = sys.executable
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trace = db.newTrace()
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db.vprint('Executing %s' % cmd)
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sc = ShellcodeLoadNotifier(db, argv[0])
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db.registerNotifier(vtrace.NOTIFY_BREAK, sc)
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trace.execute(cmd)
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def vdbExtension(db, trace):
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db.registerCmdExtension(execsc)
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