RevMe
Reverse a three-step transformation (reverse + rotate + XOR) applied to a 36-byte target symbol to recover the flag.
Xor
ASMR — Static XOR Reverse Engineering
Reverse a static XOR encryption: subtract flag bytes from key bytes position-by-position to recover the plaintext.
SSA0x42 — XOR Key Recovery from Known-Plaintext PCAP Headers
Two known-plaintext byte sequences (k and l) from the PCAP header XOR to reveal the repeating key. XOR the encrypted flag block with that key to recover the plaintext.