reversehard

explorer

dicectf_2026

Task: Reverse engineer a Rust kernel module implementing a tree-maze with ioctl interface in a QEMU environment. Solution: Extract vmlinux from bzImage, reverse ioctl commands, implement DFS with reset-based backtracking to navigate the randomly-generated tree and reach the goal node.

$ ls tags/ techniques/

maze linux_kernel rust dfs kernel_module qemu initramfs ioctl tree_traversal bzimage serio ps2_mouse misc_char_device

initramfs_extractionvmlinux_extraction_from_bzimageioctl_reverse_engineeringdfs_maze_solvingreset_based_backtrackingstatic_binary_upload

Analysis

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$ python3 exploit.py --target 192.168.1.1 --port 8080
[*] Connecting to target...
[+] Shell obtained!

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