miscProhard

EvilBabyKalmarCTF

kalmarctf

Task: Scraper bot runs ctfd-download every 30s, flag at /flag.txt on scraper container. Solution: Chain CTFd RCE to serve raw Python via plugin/template, then exploit markdown image path traversal to hijack tqdm import.

path_traversal ctfd python_module_hijacking scraper ctfd_download markdown_injection

python_import_hijackingmarkdown_image_path_traversalflask_plugin_injectionjinja2_template_raw_output

$ ls tags/ techniques/

path_traversal ctfd python_module_hijacking scraper ctfd_download markdown_injection

python_import_hijackingmarkdown_image_path_traversalflask_plugin_injectionjinja2_template_raw_output

Analysis

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

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