Category "bytecode"

Decoding PHP obfuscated payload

Recently I found a malicious PHP payload on my company's server. The code seems to be encoded into two strings claster and x64. The claster string decodes to th

EVM command line interface drops heading zeros in input

I am executing a dummy (smart) contract through the evm command line to understand how input is passed to the contract. I am using the following contract byteco

Java post increment vs opcode iinc

Most of us are familiar with post increment, but when I look to the bytecode instructions, it shows the increment happened before the invocation to the method.

How can you extend Java to introduce passing by reference?

Java is pass-by-value. How could you modify the language to introduce passing by reference (or some equivalent behavior)? Take for example something like publ

modifying python bytecode

I was wondering how to modify byte code, then recompile that code so I can use it in python as a function? I've been trying: a = """ def fact(): a = 8

Recovering human-readable Python 3.10 source from cached .pyc bytecode

After manually clearing a corrupt recycle bin on my removable USB drive, I found a couple of my most recently executed Python files to be corrupt as well; openi