5bed39728e404838ecd679df65048abcb443f8c7a9484702a2ded60104b8c4a9
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humpty_tony
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medium
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This post’s goal is to teach someone how to take a “real-world” supply-chain DLL dropper/loader and turn it into a set of actionable reversing primitives:
- Reconstruct the full execution chain from NPM install hook → rundll32 execution of a shipped DLL export → staged loader → staged stealer, and understand where “initial access” ends and “payload logic” begins.
- Deobfuscate a modern loader’s internals efficiently by focusing on the repeatable patterns that matter:
- PEB-walking + import hashing
- Encrypted static strings
- Hook checks + indirect syscalls
- Extract a protocol/crypto story from messy networking code, even if you don’t fully reverse the C2
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04 Jan 2026
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