Navigating the custom VM loop in IDA Pro or Ghidra. Analysts look for the "fetch-decode-execute" cycle to understand how the custom bytecode is processed.
Search for "Flare-On 10 Write-up" to find scripts (usually Python) that analysts wrote to automate the decryption of the VM bytecode. 7xisHeadTrick.zip
For the most comprehensive technical deep-dives, you should look at the official solutions and community walkthroughs: Navigating the custom VM loop in IDA Pro or Ghidra
"7xisHeadTrick.zip" refers to a high-profile originally featured in the Flare-On 7 Reverse Engineering Challenge (2020) . Specifically, it was Challenge #10, designed by the Mandiant (formerly FireEye) FLARE team to test advanced de-obfuscation and architectural knowledge. The Core Challenge For the most comprehensive technical deep-dives, you should
The binary doesn't execute standard x64 instructions for its main logic. Instead, it uses a custom-built virtual machine with its own bytecode and registers.
The zip contains the executable which, when run, decrypts and executes further stages in memory.