ISO Image

hackerlab

Task: modified Alpine Linux ISO from untrusted source, SHA256 doesn't match official. Solution: diff against official release reveals boot/amd-ucode.img replaced with decimal ASCII codes encoding the flag.

ascii_decoding iso_forensics alpine_linux sha256_verification file_comparison integrity_check modified_iso amd_ucode

7z_extractionascii_decimal_decodingbinary_diffiso_integrity_checksha256_comparison

$ ls tags/ techniques/

ascii_decoding iso_forensics alpine_linux sha256_verification file_comparison integrity_check modified_iso amd_ucode

7z_extractionascii_decimal_decodingbinary_diffiso_integrity_checksha256_comparison

Analysis

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

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