Debrideur Fileice.net May 2026

FILE="$1:-mystery.dat" FIXED="$FILE.fixed"

# run the binary and capture the flag ./debrideur "$FIXED" 2>/dev/null | grep -i flag Running this script prints: Debrideur fileice.net

def fix(fname): data = open(fname, "rb").read() payload = data[0x10:] # skip header + checksum field crc = binascii.crc32(payload) & 0xffffffff fixed = data[:0x08] + crc.to_bytes(4, "little") + data[0x0c:] out = fname + ".fixed" open(out, "wb").write(fixed) print(f"[+] Fixed file: out CRC=0xcrc:08x") FILE="$1:-mystery

# 1️⃣ Fix the CRC python3 rebuild.py "$FILE" Debrideur fileice.net