WinAfl instrument.exe ERRORS

[Daniel0xcc]

Hello again haha :), I try to create an insturment file for my program to test the fuzzer,

My input command is instrument.exe --mode=afl --input-image=Program.exe --output-image=Program.instr.exe --force-decompose --multithread --cookie-check-hook

But when I try to run this command i get errors which look like this :

[0705/204753:ERROR:dia_util.cc(64)] Failed to create Dia object. [0705/204753:ERROR:dia_util.cc(65)] NoRegCoCreate failed with: [hr=0x800700c1, msg=%1 is not a valid Win32 application.] [0705/204753:ERROR:dia_util.cc(66)] CreateInstance failed with: [hr=0x80040154, msg=Class not registered] [0705/204753:ERROR:pe_relinker.cc(66)] Unable to decompose module: C:\Users\danie\Desktop\winafl\bin32\Program.exe [0705/204753:ERROR:instrumenter_with_relinker.cc(124)] Failed to initialize relinker.

Can someone help me please :) thanks, mrxsys.

[ifratric]

Did you build the binary you are trying to instrument with /PROFILE linker flag. Also note that static instrumentation works only on 32-bit binaries (see https://github.com/googleprojectzero/winafl/blob/master/readme_syzygy.md)

[ditah22]

Hi, I've got similar issue when running the example test_static.exe:

C:\Users\ditah\Desktop\winafl\bin32>instrument.exe --mode=afl --input-image=test_static.exe --output-image=test_static.instr.exe --force-decompose

[0502/153213:INFO:application_impl.h(46)] Syzygy Instrumenter Version 0.8.32.0 (190dbfe). [0502/153213:INFO:application_impl.h(48)] Copyright (c) Google Inc. All rights reserved. [0502/153213:INFO:pe_relinker_util.cc(336)] Input PDB not specified, searching for it. [0502/153213:INFO:pe_relinker_util.cc(362)] Using default output PDB path: C:\Users\ditah\Desktop\winafl\bin32\test_static.instr.exe.pdb [0502/153213:INFO:pe_relinker.cc(138)] Input module : C:\Users\ditah\Desktop\winafl\bin32\test_static.exe [0502/153213:INFO:pe_relinker.cc(139)] Input PDB : .\test_static.pdb [0502/153213:INFO:pe_relinker.cc(140)] Output module: C:\Users\ditah\Desktop\winafl\bin32\test_static.instr.exe [0502/153213:INFO:pe_relinker.cc(141)] Output PDB : C:\Users\ditah\Desktop\winafl\bin32\test_static.instr.exe.pdb [0502/153213:INFO:pe_relinker.cc(57)] Decomposing module: C:\Users\ditah\Desktop\winafl\bin32\test_static.exe [0502/153213:ERROR:dia_util.cc(64)] Failed to create Dia object. [0502/153213:ERROR:dia_util.cc(65)] NoRegCoCreate failed with: [hr=0x8007007e, msg=The specified module could not be found.] [0502/153213:ERROR:dia_util.cc(66)] CreateInstance failed with: [hr=0x80040154, msg=Class not registered] [0502/153213:ERROR:pe_relinker.cc(66)] Unable to decompose module: C:\Users\ditah\Desktop\winafl\bin32\test_static.exe [0502/153213:ERROR:instrumenter_with_relinker.cc(124)] Failed to initialize relinker.

Thanks, Dor

[nevilad]

It can't open IDiaDataSource interface to get access to debugging symbols. Have you any msdiaXXX.dll registered?

[ditah22]

I tried to follow this readme_syzygy, I ran regsvr32 /s msdia140.dll in cmd before instrument.exe --mode=afl --input-image=test_static.exe --output-image=test_static.instr.exe --force-decompose if that's what you meant..

Do I need to run something else?

BTW, my Windows version is 1909 and I used the pre-compiled binaries that winafl provided.

[nevilad]

Did regsvr32 /s msdia140.dll ran successfully?

[ditah22]

Didn't print any error...

[nevilad]

Looks like successfull registered msdia, but still can't load it. Try to run instrument.exe with your command line in dependency viewer. This will log al the errors in dll loading.

[ditah22]

I'm not sure if that's what you meant: And I'm not sure what to do with those missing dlls

[nevilad]

No, that's static view. I meant a profiling run, Profile->Start profiling run... menu in the original dependency walker.

[kilimnik]

I had the same Issue and found a fix for it. First of all I noticed when executing the regsvr32 /s msdia140.dll command, the /s is for silent. That's why it didn't error. To register it successfully I opened an elevated command prompt went to this C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\DIA SDK\bin> path and executed regsvr32 msdia140.dll. This resulted in a Message Box with a success message.

After that the instrument command was successful too.