JBpatch - continued

[knc1]

The original project thread is here:
https://www.mobileread.com/forums/sho...d.php?t=175512
The original repository is here:
https://bitbucket.org/ixtab/jbpatcher

The repository of this fork of JBpatch is at:
https://bitbucket.org/knc1-admin/jbpatcher/overview

The Serp project on SourceForge appears to be dead, a backup copy of that code, as of 11.23.2016, is at (no CVS history, code only):
https://github.com/janetizzy/serp
And it appears to be updated for Java8 (which is what firmware 5.8.x is using).

The initial goal of re-opening this dead project:

• Update the patching classloader for the 5.8 series firmware, if required
  (it may not require any changes - not yet tested).
• Update the margins patch.
• Create a patch to take control of OTA downloader, once and forever.
  (Mostly because 5.8.5 can **almost** defeat our current OTA blocker.)

Various tools

• cVM developer information ::
  • http://docs.oracle.com/javame/config...r/html/toc.htm
  • http://docs.oracle.com/javame/embedded/embedded.html
  • (closest) Source code: http://hg.openjdk.java.net/jdk8u/jdk...e/3229d7b76bab
• De-compiling ::
  • Procyon toolset repository: https://bitbucket.org/mstrobel/procyon
• Deobfuscation ::
  • Active fork of enigma: https://bitbucket.org/Earthcomputer/enigma
  • Distribution by bintray.com at: Earthcomputer-MEME
• List of cVM referenced binary files ::
  lib-list.zip, attached below, both the 'on-kindle' script and an example output file.

Spoiler:

Note 1:
I haven't coded anything in Java for 20 years, help will be require from current Java coders or this project will remain dead.

Note 2 (5.8.5 built for the KT3):

[root@kindle us]# /usr/java/bin/cvm -version
CVM Capabilities set
java version "1.8.0_06-ea"
Java(TM) SE Embedded Runtime Environment (build 1.8.0_06-ea-b00, profile compact1, headless)
Java HotSpot(TM) Embedded Minimal VM (build 25.06-b00, mixed mode)

Note 3 (procyon-decompiler-0.5.30.jar renamed to procyon.jar and placed in */esys (our extension system's directory) ):
The procyon decompiler, version 0.5.30 requires Java-7 or later to run, so this isn't much of a test, but:

[root@kindle esys]# /usr/java/bin/cvm -jar procyon.jar
CVM Capabilities set
Usage: <main class> [options] <type names or class/jar files>
  Options:
- - - snip - - -

Drat!
It seems I can't follow our own instructions ( https://github.com/janetizzy/KUAL-buttons ).
Before I screw up our plan again, make things look like this:

[root@kindle us]# tree esys
esys
├── bin
│   └── tree
├── java
│   ├── bin
│   │   └── procyon.jar
│   └── lib
└── lib

5 directories, 2 files

of course you will need an:

[root@kindle us]# export PATH=/mnt/us/esys/bin:$PATH

somewhere along the line.
How / If you automate that for ssh logins is up to you (there is a thread on that somewhere - since root's home directory is normally on tmpfs).

tree isn't pre-installed, attached is the one from Debian/Jessie/ARMel, works fine (at least over ssh).
The .bin is to keep the forum uploader happy, you can rename it on the Kindle as shown above.

Note 4: The "original" engima (renamed from enigma-v0.10.4.beta):
*/esys looks like this now:

[root@kindle esys]# tree .
.
├── bin
│   └── tree
├── java
│   ├── bin
│   │   ├── enigma.jar
│   │   └── procyon.jar
│   └── lib
└── lib

5 directories, 3 files

And for a quick check on that (again, KT3-fm-5.8.5):

[root@kindle esys]# /usr/java/bin/cvm -cp java/bin/enigma.jar cuchaz.enigma.CommandMain
CVM Capabilities set
command is required
Enigma - 0.10.4 beta
Usage:
	java -cp enigma.jar cuchaz.enigma.CommandMain <command>
	where <command> is one of:
		deobfuscate <in jar> <out jar> [<mappings file>]
		decompile <in jar> <out folder> [<mappings file>]
		protectify <in jar> <out jar>

Note: enigma also has a GUI mode.

Note 5: Going to need readelf for the next script (shown after renaming from readelf.bin to keep the forum uploader happy).

[root@kindle esys]# tree .
.
├── bin
│   ├── readelf
│   └── tree
├── java
│    ├── bin
│    │    ├── enigma.jar
│    │    └── procyon.jar
│    └── lib
└── lib

More bits and pieces to come as I gather them together.

[knc1]

Issues:
IAW forum policy of: "No more public lessons for Amazon/Lab126", example code solutions when found will not be posted here.

• Patching signed jar files.
  Heard from the author (ixtab) and he doesn't have a clue. Must be a post-doc subject.
• Dealing with 'protected' execution environments.
  This is for certain one subject that I am not going to give public lessons on to certain commercial groups.

[gocho8]

I havent understood very well but... there is no .azw file to download? Sorry if i am like retard

[knc1]

Originally Posted by gocho8

I havent understood very well but... there is no .azw file to download? Sorry if i am like retard

This is dead because nobody is interested in working on it.
And it will remain that way until some Java guru shows up here with time on their hands.