pwnmedium
Storage
spbctf
Task: Binary pwn challenge with key-value storage service. Solution: Exploited buffer overflow in fgets() to overwrite getcwd() result on stack, then triggered command injection via system() call in list command using append mode to build payload across multiple writes.
$ ls tags/ techniques/
command_injectionelf64buffer_overflowpiecanary_bypassstack_variable_overwritefgets_overflowappend_modesystem_call
stack_buffer_overflowcwd_overwritecommand_injection_via_systemappend_mode_payload_building
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