Exploring Pico2026 Gatekeeper
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- Unpack an executable with upx (don't snap install upx, instead apt-get install upx-ucl), reverse engineering in Ghidra, then use ...
- Brute force an XOR encrypted file with single byte key.
- Get encrypted exfiltrated data from a PCAP file, then use CyberChef to XOR decode it.
- Use pwntools to read symbols from ELF file and send function addresses to server.
- Use virt-ls and virt-copy-out to extract a GIT repo from a disk image, then git log.
In-Depth Information on Pico2026 Gatekeeper
Simple reverse engineering with Ghidra. PicoCTF Uses CUPP to generate custom password list. SQL injection on a website.
Uses LLDB, Ghidra and CyberChef to reverse engineer a binary that decodes the password at runtime.
We hope this detailed breakdown of Pico2026 Gatekeeper was helpful.
