reversemedium

What Is This?

hackerlab

Task: a PE32+ Windows x64 executable dynamically resolves registry APIs and jumps into runtime-generated RWX code. Solution: dump or emulate the generated stub, recover its byte-minus-0x41 string decoder, and extract the flag written into HKCU\\SOFTWARE\\TASK_CODEBY.

$ ls tags/ techniques/

registry windows_pe x64 self_modifying_code virtualalloc runtime_generated_code advapi32 obfuscated_strings

dynamic_api_resolution_analysisruntime_stub_emulationstring_decoder_recoveryregistry_artifact_extraction

Analysis

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

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