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CHALLENGE03/ 06

PWN // INTERMEDIATE

Stack the Patty

Overflow a sixteen-byte WebAssembly buffer by one useful byte.

STATUSREADYIntermediate

CHALLENGE BRIEF

Brief

A WebAssembly routine copies an arbitrary byte sequence into a sixteen-byte buffer. The byte immediately after it controls the success latch.

Objective

Send exactly seventeen hexadecimal bytes with the latch byte set to 42 and recover the flag.

Buffer
16 bytes @ 0x100
Latch
1 byte @ 0x110
Target
0x42

INTERACTIVE LAB

Run the lab

YOUR NEXT MOVE
0x10016-byte input bufferlatch 0x000x110
Download module122 bytes // exports memory, plate, reset

Success latch reads 0x00.

OPTIONAL HINTS

Hints

No hints opened. Hints do not affect progress.

    FINAL ANSWER

    ONE LAST STEP

    SUBMIT YOUR FLAG.

    Preparing challenge…