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Fix the bug in the heuristic for `main_arena` and `mp_` (#1273)

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* Fix the bug when searching the struct of `main_arena` and `mp_` in the memory.
pull/1274/head
Alan Li 3 years ago committed by GitHub
parent 75ece8e2a8
commit 42caec2552
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1 changed files with 2 additions and 2 deletions
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4
pwndbg/heap/ptmalloc.py
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@ -1031,7 +1031,7 @@ class HeuristicHeap(Heap):
tmp_arena = self.malloc_state(tmp_next) tmp_arena = self.malloc_state(tmp_next)
try: try:
tmp_next = int(tmp_arena["next"]) tmp_next = int(tmp_arena["next"])
except gdb.MemoryError: except (gdb.MemoryError, gdb.error, OverflowError):
# tmp_arena->next is not valid, break # tmp_arena->next is not valid, break
break break
if found: if found:
@ -1558,7 +1558,7 @@ class HeuristicHeap(Heap):
or pwndbg.vmmap.find(self._mp_addr) is None or pwndbg.vmmap.find(self._mp_addr) is None
and self.possible_page_of_symbols and self.possible_page_of_symbols
): ):
libc_page = self.possible_page_of_symbols.vaddr libc_page = self.possible_page_of_symbols
# try to find sbrk_base via main_arena or vmmap # try to find sbrk_base via main_arena or vmmap
# TODO/FIXME: If mp_.sbrk_base is not same as heap region start, this will fail # TODO/FIXME: If mp_.sbrk_base is not same as heap region start, this will fail

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