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Error: java.lang.RuntimeException: Unable to create decompiler #58

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kajaaz opened this issue Nov 27, 2023 · 12 comments · Fixed by #60
Closed

Error: java.lang.RuntimeException: Unable to create decompiler #58

kajaaz opened this issue Nov 27, 2023 · 12 comments · Fixed by #60
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@sei-eschwartz
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@kajaaz
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kajaaz commented Nov 27, 2023

Hi,

I have an issue when running GhiHorn on my Ghidra on a Go binary. Could you help me to fix that please ?

ApiAnalyzer Failed (4 errors)
Error: java.lang.RuntimeException: Unable to create decompiler

Build Date: 2023-Jul-11 1640 EDT
Ghidra Version: 10.3.2
Java Home: /home/usr/ghidra/OpenJDK17U-jdk_x64_linux_hotspot_17.0.8_7/jdk-17.0.8+7
JVM Version: Eclipse Adoptium 17.0.8
OS: Linux 6.2.0-37-generic amd64

[2023-11-27 16:55:22]: Looking for path from 00dfdf00 to 00dfe259
[2023-11-27 16:55:22]: Error: java.lang.RuntimeException: Unable to create decompiler
[2023-11-27 16:55:22]: PathAnalyzer completed.
[2023-11-27 16:55:22]: PathAnalyzer completed.
[2023-11-27 16:55:22]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.
[2023-11-27 17:08:58]: PathAnalyzer completed.

[2023-11-27 17:14:44]: Looking for all API signatures
[2023-11-27 17:14:44]: Error: java.lang.RuntimeException: Unable to create decompiler
[2023-11-27 17:14:45]: Error: java.lang.RuntimeException: Unable to create decompiler
[2023-11-27 17:14:45]: Error: java.lang.RuntimeException: Unable to create decompiler
[2023-11-27 17:14:46]: Error: java.lang.RuntimeException: Unable to create decompiler
[2023-11-27 17:14:46]: Error: java.lang.RuntimeException: Unable to create decompiler
[2023-11-27 17:14:46]: ApiAnalyzer completed.
[2023-11-27 17:14:46]: ApiAnalyzer completed.
[2023-11-27 17:14:46]: ApiAnalyzer completed.
[2023-11-27 17:14:46]: ApiAnalyzer completed.
[2023-11-27 17:14:46]: ApiAnalyzer completed.
[2023-11-27 17:14:46]: Error: java.lang.RuntimeException: Unable to create decompiler
@jeffgennari
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Hi,

Can you share the binary that caused the exception? We need a bit more information to reproduce this issue.

@kajaaz
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kajaaz commented Nov 28, 2023

Hi,

Can you share the binary that caused the exception? We need a bit more information to reproduce this issue.

Hi @jeffgennari,

Sure. I work on https://github.com/ethereum/go-ethereum, on the geth binary (from make geth).
Actually I got the same error on different Go binary that are forks of this repo.

This error comes from here I think :

kaiju/src/main/java/kaiju/tools/ghihorn/decompiler/DecompilerFactory.java

Line 35 in cf6a4bf

throw new RuntimeException("Unable to create decompiler");

Thank you for your time

@sei-eschwartz
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sei-eschwartz commented Nov 28, 2023 via email

@kajaaz
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kajaaz commented Nov 29, 2023

Can you upload the binary? Thanks.
…

Hi @sei-eschwartz,

Yes, here it is.

@sei-eschwartz sei-eschwartz added the bug Something isn't working label Nov 29, 2023
@sei-eschwartz sei-eschwartz self-assigned this Nov 29, 2023
@sei-eschwartz
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So this did not work for me either, but it failed in a very different way. I got the following error:

[2023-11-29 15:37:01]: Looking for path from 00dfdf00 to 00dfe259
[2023-11-29 15:46:10]: Error: No entry point found for function: COVER_selectDict.
[2023-11-29 15:46:10]: PathAnalyzer completed.

I think this might be related to #40 and fdc3a80

I'm really not sure why you would be unable to create a decompiler. Does the decompiler GUI work for you? Could you be running out of memory?

@sei-eschwartz
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sei-eschwartz commented Nov 29, 2023 •
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So I made another patch for the entry point problem: cmu-sei#10

But with that, I get:

[2023-11-29 16:16:03]: Looking for path from 00dfdf00 to 00dfe259
[2023-11-29 16:25:25]: Encountered invalid decompiled function(s), analysis may be inaccurate
[2023-11-29 16:34:37]: Could not complete analysis: Failed to generate variables for p-code at address 015c011b:  ---  STORE (const, 0x1b1, 4) , (register, 0x38, 8) , (const, 0x0, 16), exception: Bit length must be >= 1 and <= 64. This is an issue with Ghidra's HighConstant class.
[2023-11-29 16:34:37]: PathAnalyzer completed.

        015c011b 0f 11 07        MOVUPS     xmmword ptr [RDI],XMM0

This is a known problem with Ghidra that we don't really have a way to work around at the moment.

@kajaaz
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kajaaz commented Nov 30, 2023

Hi @sei-eschwartz,

  1. Yes I think my decompiler GUI works properly (see screenshot). I can explore functions and create Graph Control/Data Flow without troubles.

  2. I use additional scripts for Go binaries to decompile, maybe that explains the differences we have.

I still do not understand why I have this issue with "Unable to create decompiler"... :/

ksnip_20231130-100855

@sei-eschwartz
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I bet the Go scripts are related. I'll give them a try and see if I can reproduce the problem.

If you could export your database to a ghidra zip file and upload it, that would be another way for me to try to replicate the decompiler problem.

@kajaaz
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kajaaz commented Dec 1, 2023

I bet the Go scripts are related. I'll give them a try and see if I can reproduce the problem.

If you could export your database to a ghidra zip file and upload it, that would be another way for me to try to replicate the decompiler problem.

Yes probably. I have added here the ghidra zip file, hope it will help!

@sei-eschwartz
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Even with your database, I still don't get the same error :( I'm going to push a new release that prints the original exception. Can you try out https://github.com/CERTCC/kaiju/releases/tag/231201 and let me know what the error is?

@kajaaz
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kajaaz commented Dec 4, 2023

Hi @sei-eschwartz,

Sure. I have tested different entry points and addresses and here is what I always get :

Error: java.lang.RuntimeException: Unable to create decompiler: java.lang.ClassNotFoundException:
docking.options.OptionsService

Build Date: 2023-Jul-11 1640 EDT
Ghidra Version: 10.3.2
Java Home: /home/usr/ghidra/OpenJDK17U-jdk_x64_linux_hotspot_17.0.8_7/jdk-17.0.8+7
JVM Version: Eclipse Adoptium 17.0.8
OS: Linux 6.2.0-37-generic amd64

ghidra_kaiju_bug

sei-eschwartz added a commit that referenced this issue Dec 4, 2023
@sei-eschwartz
Correct the OptionsService name
1b561da 
Fixes #58
@sei-eschwartz sei-eschwartz mentioned this issue Dec 4, 2023
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@sei-eschwartz
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Well, that's interesting. Apparently Kaiju was broken for Ghidra 10.3.2, and our tests weren't exercising that code.

This should be fixed now in release 231204. Let me know if not...

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Fix OptionsService for older Ghidra versions CERTCC/kaiju
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@jeffgennari @sei-eschwartz @kajaaz