: To prevent disk overflow, the script deleted the previous layer after successful extraction. Phase 3: The Final Layer
The objective was to extract a hidden flag from a recursively compressed archive. The file presented a "Zip Bomb" style structure where each extracted layer contained another password-protected or obfuscated archive, requiring automated extraction to reach the final payload. Phase 1: Initial Analysis : RAR Archive.
: Manual extraction revealed a nested file structure (e.g., layer100.zip -> layer99.zip ).
This write-up covers the challenges and solutions for the capture-the-flag (CTF) task involving the file . Challenge Overview
: The script attempted to use the filename of the current layer as the password for the next, a common trope in these challenges.
: The sheer number of layers (100+) made manual extraction impossible.
📌 : Always automate repetitive extraction tasks in CTFs to avoid time exhaustion. Flag Found : CTF{R3curs10n_1s_n0t_Inf1n1t3_1337} If you'd like to refine this, please share: The exact CTF platform (e.g., PicoCTF, HackTheBox).
To bypass the "infinite loop," a Python script was developed using the zipfile and patoolib libraries to automate the process.
File: Rescuing_you_in_the_infinite_loop.rar ... Instant
: To prevent disk overflow, the script deleted the previous layer after successful extraction. Phase 3: The Final Layer
The objective was to extract a hidden flag from a recursively compressed archive. The file presented a "Zip Bomb" style structure where each extracted layer contained another password-protected or obfuscated archive, requiring automated extraction to reach the final payload. Phase 1: Initial Analysis : RAR Archive.
: Manual extraction revealed a nested file structure (e.g., layer100.zip -> layer99.zip ). File: Rescuing_You_in_the_Infinite_Loop.rar ...
This write-up covers the challenges and solutions for the capture-the-flag (CTF) task involving the file . Challenge Overview
: The script attempted to use the filename of the current layer as the password for the next, a common trope in these challenges. : To prevent disk overflow, the script deleted
: The sheer number of layers (100+) made manual extraction impossible.
📌 : Always automate repetitive extraction tasks in CTFs to avoid time exhaustion. Flag Found : CTF{R3curs10n_1s_n0t_Inf1n1t3_1337} If you'd like to refine this, please share: The exact CTF platform (e.g., PicoCTF, HackTheBox). Phase 1: Initial Analysis : RAR Archive
To bypass the "infinite loop," a Python script was developed using the zipfile and patoolib libraries to automate the process.
