GPT-6 solved the HellGates crackme in under 20-30 minutes on SRE-Bench in September 2026, ending a year in which humans and models including Claude, ChatGPT, and DeepSeek failed to crack the challenge. The crackme, a custom encrypted 32-bit CPU implemented in VHDL with obfuscation and anti-tamper layers, fell to a side-channel/differential analysis attack exploiting weak crypto. The author credits Zhuo Zhang for the result.
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