Purebasic Decompiler Now

A developer accidentally deletes the original .pb source but still has the compiled .exe. They hope to recover their work.

Reality: Unless the executable was compiled with debug symbols (rare in release builds), you will only recover assembly. It is often faster to rewrite the program.

Sometimes static analysis fails. Run the PureBasic executable in x64dbg:

Let’s look at a practical example. You have an exe and want to know what this function does. Ghidra gives you:

void FUN_00401200(void) 
  int i;
  char *local_10;
local_10 = (char *)PB_StringBase(0);
i = 0;
while (i < 10) 
PB_PrintString(local_10);
i = i + 1;
return;
 purebasic decompiler

You can manually translate that back to PureBasic:

Procedure MyLoop()
  Define i.i
  For i = 0 To 9
    PrintN("Hello")
  Next i
EndProcedure

Notice the string "Hello" was stored elsewhere. You have to reconstruct constants by cross-referencing numeric addresses.

Detect protection/packing

Map runtime characteristics of PureBasic binaries

Build function/call graph

Extract data and structures

Recover control flow and higher-level constructs A developer accidentally deletes the original

Recreate PureBasic-like code

Preserve variable types where possible (Long, Long64, Ptr, String, Byte).

Validate iteratively

Automate repetitive tasks

Document findings

Load the exe into x64dbg, set breakpoints on key APIs, and run it. You will see exactly what data is passed.

Example: You suspect a license key check. Break on lstrcmpA. When it hits, examine the two strings on the stack – one is your entered key, the other is the hardcoded valid key.

---