pwnProeasy

sptr

spbctf

Task: Stack buffer overflow with adjacent string pointer. Solution: Overwrite pointer to point to "WIN" string in .rodata section to pass strcmp check.

stack_overflow strcmp rodata no_pie pointer_overwrite

string_pointer_overwriterodata_address_usageadjacent_variable_corruption

$ ls tags/ techniques/

stack_overflow strcmp rodata no_pie pointer_overwrite

string_pointer_overwriterodata_address_usageadjacent_variable_corruption

Analysis

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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