SerialMe #01
A warm-up serial-validation crackme — recover the algorithm behind a simple key check.
beginner
Linux · x86-64 All crack stuffs
XORGate
by SPIRITX
Constant folding and a rolling XOR stand between you and the flag. Static-only friendly.
intermediate
Cross-platformAn original in-house crackme. Best run in your own analysis VM — it does not target any third-party or commercial software.
The challenge
XORGate encodes its expected input with a rolling XOR keyed by loop index. The challenge is to read the transform statically and invert it — no execution required. A good step up from linear comparisons into stateful checks.
xor
encoding
static