redcolor

spbctf

Task: stripped x86-64 PIE with a corrupted ELF entry point (e_entry=0xFFFFFFFFFFFFFFFE, the RED field in the header hex-dump image) that crashes at startup; main() is a custom stack-based bytecode VM. Solution: restore e_entry to _start (0x1060) at file offset 0x18, then statically disassemble/emulate the VM to recover a 33-byte XOR-decrypt loop yielding the flag.