Decrypt max script spot5/24/2023 ![]() The concatenation of these characters lead to the existence of the complete string on the stack. To obfuscate strings, one can create a string on the stack, character for character, or in small groups of characters. A pointer to the string’s location is used to access or alter the data. When a string is used in a local variable in source code, the compiler generally places the string in a different segment. In general, strings are not stored within the text segment of the binary. The samples have been analysed using all analysers. The analysis in this article is done with a self-built version of Ghidra 10.2, based on the publicly available source code of the first of February 2022. This article will provide insight into stack strings, the endianness of values, how to handle (encrypted) stack strings, and the step-by-step creation of a Ghidra script which handles (wide) stack strings, which may or may not be encrypted. The usage of stack strings within malware is frequent, especially when analysing shellcode or more advanced samples. This article was published on the 12th of April 2022.
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