Here is a deep modification of original code by Rolf Rolles and Takahiro Haruyama to deal with nested flattening and jg/jle instead jz/jnz comparing were used in FinSpy (FinFisher) malware. As well it should be useful in RE other flattened malware.
Unflattener may be disabled/enabled in decompiler's context menu. Current state of unflattener reported in a comment in the first line of pseudocode.
