Different crack me challenges
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password checker checks input against some value
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keygen takes user input, produces a password from input based on algorithm
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patchme remove some code by nop/jump etc...
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pwnme binary exploit
32-bit executable stack/ no DEP no PIE no canary
gcc file.c -m32 -z execstack -fno-stack-protector -fno-pie
no endbr32/endbr64 control flow enforcement ??