A comprehensive guide to creating custom Windows shellcode in C++ by manually parsing the Process Environment Block (PEB) and Thread Environment Block (TEB) to dynamically resolve API functions. The tutorial covers Windows memory fundamentals, PE parsing, string obfuscation techniques, and demonstrates building a reverse shell payload that bypasses common detection methods used by security tools.
Table of contents
Windows Memory Fundamentals: The Process DiaryRetrieving the Loader Data Table (LDR) contentTraversing the InMemoryOrderModuleList to Print Loaded DLLsHow It Works:Parsing the Kernel32 PE objectFinding GetProcAddress and Storing Strings in ShellcodeGet Itz.sanskarr’s stories in your inboxLet’s step up our gameHere is the full source code of the malicious payload that establish a reverse shell to 192.168.210.130 on TCP port 2106 on a powershell handlePayload conversion to shellcodePOC-Key TakeawaysFinal ThoughtsSort: