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Fixing pass_memory-breakpoint logic

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hakril
2025-08-07 16:59:02 +02:00
parent bef410a1c3
commit c46d76a846
2 changed files with 6 additions and 3 deletions
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windows/debug/breakpoints.py
+1
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@@ -55,6 +55,7 @@ class MemoryBreakpoint(Breakpoint):
self.size = size if size is not None else self.DEFAULT_SIZE
events = events if events is not None else self.DEFAULT_EVENTS
self.events = set(events)
self._reput_pages = [] # The current memory BP page that is passed
def trigger(self, dbg, exception):
"""Called when breakpoint is hit"""
windows/debug/debugger.py
+5 -3
View File
@@ -422,8 +422,9 @@ class Debugger(object):
return True
def _restore_breakpoint_MEMBP(self, bp, target):
(page_addr, page_prot) = bp._reput_page
return target.virtual_protect(page_addr, PAGE_SIZE, page_prot, None)
for (page_addr, page_prot) in bp._reput_pages:
target.virtual_protect(page_addr, PAGE_SIZE, page_prot, None)
bp._reput_pages.clear()
def _remove_breakpoint_MEMBP(self, bp, target):
@@ -542,7 +543,7 @@ class Debugger(object):
ctx = thread.context
ctx.EEFlags.TF = 1
thread.set_context(ctx)
bp._reput_page = (fault_page, page_prot.value)
bp._reput_pages.append((fault_page, page_prot.value))
self._breakpoint_to_reput[cp.pid].add(bp)
# debug event handlers
@@ -665,6 +666,7 @@ class Debugger(object):
fault_type = exception.ExceptionRecord.ExceptionInformation[0]
fault_addr = exception.ExceptionRecord.ExceptionInformation[1]
pc_addr = self.current_thread.context.pc
dbgprint("Handling access_violation at pc={0:#x} addr={1:#x}".format(pc_addr, fault_addr), "DBG")
if fault_addr == pc_addr:
fault_type = EXEC
event = EVENT_STR[fault_type]