Is there any native DLL export functions viewer

Question

Is there any free native Windows DLL export functions viewer  which shows the function name  and a list of their parameters

User · Answer

DLL Export Viewer by NirSoft can be used to display exported functions in a DLL.

This utility displays the list of all exported functions and their virtual memory addresses for the specified DLL files. You can easily copy the memory address of the desired function, paste it into your debugger, and set a breakpoint for this memory address. When this function is called, the debugger will stop in the beginning of this function.

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dumpbin from the Visual Studio command prompt   dumpbin  exports csp dll   Example of output   Microsoft  R  COFF PE Dumper Version 10 00 30319 01 Copyright  C  Microsoft Corporation   All rights reserved    Dump of file csp dll  File Type  DLL    Section contains the following exports for CSP dll      00000000 characteristics     3B1D0B77 time date stamp Tue Jun 05 12 40 23 2001         0 00 version            1 ordinal base           25 number of functions           25 number of names      ordinal hint RVA      name            1    0 00001470 CPAcquireContext           2    1 000014B0 CPCreateHash           3    2 00001520 CPDecrypt           4    3 000014B0 CPDeriveKey           5    4 00001590 CPDestroyHash           6    5 00001590 CPDestroyKey           7    6 00001560 CPEncrypt           8    7 00001520 CPExportKey           9    8 00001490 CPGenKey          10    9 000015B0 CPGenRandom          11    A 000014D0 CPGetHashParam          12    B 000014D0 CPGetKeyParam          13    C 00001500 CPGetProvParam          14    D 000015C0 CPGetUserKey          15    E 00001580 CPHashData          16    F 000014F0 CPHashSessionKey          17   10 00001540 CPImportKey          18   11 00001590 CPReleaseContext          19   12 00001580 CPSetHashParam          20   13 00001580 CPSetKeyParam          21   14 000014F0 CPSetProvParam          22   15 00001520 CPSignHash          23   16 000015A0 CPVerifySignature          24   17 00001060 DllRegisterServer          25   18 00001000 DllUnregisterServer    Summary          1000  data         1000  rdata         1000  reloc         1000  rsrc         1000  text

User · Answer

you can use Dependency Walker to view the function name  you can see the function s parameters only if it s decorated  read the following from the FAQ   How do I view the parameter and return types of a function  For most functions  this information is simply not present in the module  The Windows  module file format only provides a single text string to identify each function  There is no structured way to list the number of parameters  the parameter types  or the return type  However  some languages do something called function  decoration  or  mangling   which is the process of encoding information into the text string  For example  a function like int Foo int  int  encoded with simple decoration might be exported as  Foo 8  The 8 refers to the number of bytes used by the parameters  If C   decoration is used  the function would be exported as  Foo  YGHHH Z  which can be directly decoded back to the function s original prototype  int Foo int  int   Dependency Walker supports C   undecoration by using the Undecorate C   Functions Command

User · Answer

If you don t have the source code and API documentation  the machine code is all there is  you need to disassemble the dll library using something like IDA Pro   another option is use the trial version of PE Explorer   PE Explorer provides a Disassembler  There is only one way to figure out the parameters  run the disassembler and read the disassembly output  Unfortunately  this task of reverse engineering the interface cannot be automated   PE Explorer comes bundled with descriptions for 39 various libraries  including the core Windows   operating system libraries  eg  KERNEL32  GDI32  USER32  SHELL32  WSOCK32   key graphics libraries  DDRAW  OPENGL32  and more     source  heaventools com

[dll] Is there any native DLL export functions viewer?

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