Reverse Engineering

Return oriented programming is one of the paradigms of all time. The garbled output is `94 7 d4 64 7 54 63 24 ad 98 45 72 35`

Android APK that applies a position-dependent substitution over letters/digits/specials. Invert it in Python.

Stripped Nim binary that XORs input with a keystream derived from a hard seed. Extract the keystream at runtime with gdb and XOR out the flag.