ypl6/heaplens

CMPT733 Cybersecurity Lab II Project: GDB plugin for heap exploits inspired by CVE-2021-3156

heaplens's Issues

Support x86

Program trying to insert invalid breakpoints after running `heaplens`

After a heaplens run, attempting to run the program again with r results in warnings:

Cannot insert breakpoint <some_neg_num>.
Cannot access memory at address <addr>.

Expected: program re-runs without inserting new breakpoints.

All breakpoints in the internal lists should have been removed, this could be verified by calling info b at exit or return.

No help messages for `heaplens-clear` and `heaplens-chunks`

Help menu is not accessible for commands heaplens-clear and heaplens-chunks.

For heaplens-clear:

gef➤  heaplens-clear -h
Clear Heaplens log [Y/N]? N

For heaplens-chunks:

gef➤  heaplens-chunks -h
Showing current heap info with freed chunks:

While other commands that use argument parser will return a nice menu like this:

gef➤  heaplens-dump -h
usage: [-h] [-o OUTPUT] [--json] [-s]

Dump Heaplens logs. Writes to stdout by default.

optional arguments:
  -h, --help            show this help message and exit
  -o OUTPUT, --output OUTPUT
                        write to file at path {output} (default: None)
  --json                dump in json (default: False)
  -s, --sort            sort the chunks by their addresses (default: False)

The two in title have no extra arguments, but it would be great to have a command description somewhere.