radare2

Static Analysis

Run the automatic analysis to identify functions and code, and then list the functions to see what we're working with:

r2 -qc 'aaa; afl' encrypt

Disassemble the main function

r2 -qc 's main; pdf' encrypt

Sometimes the automatic analysis don't create a function called main. In that case, identify the memory where the main logic starts, and then print the disassembly from there:

r2 -qc 'aaa; s 0x00001289; pdf' encrypt