pwneasy
Казино (Casino)
hackerlab
Task: a PIE slot-machine binary reads 0x8c bytes into a 0x70-byte stack buffer in main(), letting adjacent local integers control the prize-selection bounds. Solution: overflow those locals to set max=1000000 and min=-1, force the special flag prize, then wait for the animation and let print_flag() read the flag from the environment.
$ ls tags/ techniques/
adjacent_stack_variable_overwritelogic_bypass
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