[Cbump] POSIX C implementation of Open_Bump

ferreirawax · Aug 7, 2015

Hello,

A few days ago I wrote a new implementation inspired by the work of CyboLabs and Codefire that in harmony contributed for the creation of Open_Bump. Basically I rewrote Open_Bump using POSIX C to run directly on LG G2 or any compatible device with Open_Bump. So now you can bump any kernel or recovery using the target device, validate images to know if they have been bumped and other things.

The source code and binaries for Linux and Android found at: https://github.com/ferreirawax/cbump

FAQ

What is POSIX?
POSIX is an API for Unix-like systems (Linux, Android, etc).

But what are the benefits of this?
Considering the benefits already mentioned above. Other example, if you are a developer, you will probably will get rid of Python or even get rid of everything and create a script to bump the Kernel/Recovery on the flash time.

And why the original developers did not do it?
I do not know.

I do not know how to use it.
See the readme in the link above.

Cheers!

iko11 · Aug 7, 2015

It will be useful for developers, thanks for the effort

wulsic · Aug 8, 2015

Nice work, I guess the reason why it remained in Python was because it was just working fine once you installed python on your linux environment. And the only way to bump on android was what was implented in multirom to first unloki the boot.img and then sign it with the LG key.

Just some questions:
so if you use cbump with -f then it will check or it's bumped and then flash it but if it's loki then it will not flash it and it will only say that it's not bumped right?
And with your usage:

Code:

usage: cbump [-f|--flash] [-a|--avexado] [stdin] [stdin]

Is it both stdin or must the last one be stdout?

Code:

usage: cbump [-f|--flash] [-a|--avexado] [stdin] [stdout]

Also could you perhaps explain a bit with how to use it on android, like where to put it and those things a little bit more explaination.
Just asking as I won't check the complete code now and as I am tired and I am still a newb at this level of writing codes etc but it look's :good: but still, I am not sure how much we will use cbump in Android and perhaps also in multirom but I'll check it out perhaps tomorrow or later more. Still thanks for your contribution:good:

ferreirawax · Aug 8, 2015

wulsic said:
Nice work, I guess the reason why it remained in Python was because it was just working fine once you installed python on your linux environment. And the only way to bump on android was what was implented in multirom to first unloki the boot.img and then sign it with the LG key.

Just some questions:
so if you use cbump with -f then it will check or it's bumped and then flash it but if it's loki then it will not flash it and it will only say that it's not bumped right?
And with your usage:

Code:

usage: cbump [-f|--flash] [-a|--avexado] [stdin] [stdin]

Is it both stdin or must the last one be stdout?

Code:

usage: cbump [-f|--flash] [-a|--avexado] [stdin] [stdout]

Also could you perhaps explain a bit with how to use it on android, like where to put it and those things a little bit more explaination.
Just asking as I won't check the complete code now and as I am tired and I am still a newb at this level of writing codes etc but it look's :good: but still, I am not sure how much we will use cbump in Android and perhaps also in multirom but I'll check it out perhaps tomorrow or later more. Still thanks for your contribution:good:

Hello,

I know that Python works well, but Cbump was thought to be portable. I did not even know about MultiROM, I checked now and discover that he used the unrepresentative signature in many standard unicodes which is not an elegant method. About -f, yes. I had not thought about Loki up because I have no reason to use Loki instead of Bump (Without disregarding the Dan's splendid work), Maybe I can add support for Loki verification later. About streams take look here, I'll add more information/instructions in thread soon.

Thanks.

RenderBroken · Aug 8, 2015

@ferreirawax

Very cool work. Can't wait to expand on this and find more use cases!

Sj12345 · Aug 10, 2015

how I know if my devices is bump supported? I know it works in G2,G3 on lollipop 5.0.2, right? now I own a G flex 2 on 5.0.1, can this work?????

jeebspawnshop · Aug 10, 2015

Sj12345 said:
how I know if my devices is bump supported? I know it works in G2,G3 on lollipop 5.0.2, right? now I own a G flex 2 on 5.0.1, can this work?????

You're in the WROOOOOONG thread, buddy...

Sj12345 · Aug 10, 2015

jeebspawnshop said:
You're in the WROOOOOONG thread, buddy...

haha,no I dont buddy, LG exploits can be used for all LG devices (we have root on g2,g3,g4,gflex,gflex2 with the SAME EXPLOIT) He understands how the exploit "bump" works... so I need help from HIM to try this in my devices

....... thanks

From Readme.txt
"The flash function uses MSM identifier to detect partition block, Tested only on LG G2, Probably works too with LG G3 and others LG devices powered by Qualcomm."

Sj12345 · Aug 10, 2015

Sorry its me again
I have a lot of question???? can you help me? @ferreirawax
I have two partitions on my phone (aboot and boot), which should be used???
I will dump the correct partition with

Code:

dd if=/dev/block/bootdevice/by-name/boot of=/data/media/0/boot.img

then use your tool like

Code:

cbump /data/media/0/boot.img /data/media/0/cboot.img

flash partition with

Code:

dd if=/data/media/0/cboot.img of=/dev/block/bootdevice/by-name/boot

and try to booting up....so if this boot up means it works?
and my next step will be make a TWRP recovery???? I will be carefull cause My phone doesnt have kdz or tot for go back to stock... I only have my own backup from dd

wulsic · Aug 10, 2015

@Sj12345 this is a rewritten version of open_bump so if bump didnt worked on your device this won't work either. Lollipop isn't working with bump only jellybean and kitkat as far as I know. Also I suggest before doing these things to learn what the partitions etc are before you will hardbrick yourself. Aboot is the bootloader. Boot is the boot.img so that's the kernel.
It probably will result into an security error.

Sent from my LG-D802 using Tapatalk

dorimanx · Aug 10, 2015

One word: COOL

blastagator · Aug 10, 2015

This is awesome, thank you so much. Now we can use .zip to bump and flash, just like loki method. Will make testing things SO much easier. Won't have to re-bump the image every time

You the man!

MicroMod777 · Aug 10, 2015

Now if u can get one for the G4 n get the $10,000 bounty!

Sent from my LG-H811 using Tapatalk

fLipz · Aug 10, 2015

5 Star For You [Excellent]

Testing Cbump to our devices

Screenshot_2015-08-11-03-33-16_dbpg220150811_033529_zpse9azfbvt.png

Awesome Tools! :good:

marchino123 · Aug 10, 2015

It should help multirom?

Inviato dal mio LG-D802 utilizzando Tapatalk

InsideMuz · Aug 10, 2015

Edited

tsunamical · Feb 11, 2016

~~Sorry for the bump (ehehe), but does anyone have a mirror of this?~~ Nvm, solved!
https://github.com/dorimanx/cbump

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[Cbump] POSIX C implementation of Open_Bump

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