UEFI/BIOS Modding using Linux?

[Knogle]

Ahoy friends.
In the past during Phoenix times i edited my BIOS using disassemblers and hex editors on Windows XP.
But nowadays i use Linux since almost 5 years and a lot of things have changed. Now we have UEFI.
A lot of tutorials use Windows tools to perform changes, but does someone know if there are any Linux tools to perform that?
Currently i'm searching for such tools, and currently i'm trying to mess with my socketed uefi using a CH431A SPI and binwalk as well as a debugger to disassemble and assemble stuff again.

Currently i extract them using dd and the given offset.

It looks like that.
But is there any easy-to-use tool?

Code:

DECIMAL       HEXADECIMAL     DESCRIPTION -------------------------------------------------------------------------------- 0             0x0             LZMA compressed data, properties: 0x5D, dictionary size: 16777216 bytes, uncompressed size: 10072068 bytes 2822039       0x2B0F97        UEFI PI Firmware Volume, volume size: 417792, header size: 0, revision: 0, Variable Storage, GUID: FFF12B8D-7696-4C8B-85A9-2747075B4F50 2822551       0x2B1197        Intel x86 or x64 microcode, sig 0x000306c1, pf_mask 0x32, 2012-06-14, rev 0x-ffed, size 24576 2847127       0x2B7197        Intel x86 or x64 microcode, sig 0x000306c2, pf_mask 0x32, 2012-10-17, rev 0x-fffa, size 22528 2869655       0x2BC997        Intel x86 or x64 microcode, sig 0x000306c3, pf_mask 0x32, 2019-02-26, rev 0x0027, size 23552 2915790       0x2C7DCE        Certificate in DER format (x509 v3), header length: 4, sequence length: 1552 2917390       0x2C840E        Certificate in DER format (x509 v3), header length: 4, sequence length: 1495 2918933       0x2C8A15        Certificate in DER format (x509 v3), header length: 4, sequence length: 942 2919923       0x2C8DF3        Certificate in DER format (x509 v3), header length: 4, sequence length: 899 2924650       0x2CA06A        Certificate in DER format (x509 v3), header length: 4, sequence length: 937 2925635       0x2CA443        Certificate in DER format (x509 v3), header length: 4, sequence length: 1512 2927311       0x2CAACF        Certificate in DER format (x509 v3), header length: 4, sequence length: 935 3014814       0x2E009E        GIF image data, version "89a", 600 x 260 3021217       0x2E19A1        Copyright string: "Copyright (C) By Lenovo" 3045539       0x2E78A3        GIF image data, version "89a", 546 x 78 3049481       0x2E8809        Copyright string: "Copyright (C) By Lenovo" 3239831       0x316F97        UEFI PI Firmware Volume, volume size: 167936, header size: 0, revision: 0, GUID: 00504624-8A59-4EEB-0FBD-6B36E96128E0 3244313       0x318119        Certificate in DER format (x509 v3), header length: 4, sequence length: 1552 3245913       0x318759        Certificate in DER format (x509 v3), header length: 4, sequence length: 1495 3247456       0x318D60        Certificate in DER format (x509 v3), header length: 4, sequence length: 942 3248446       0x31913E        Certificate in DER format (x509 v3), header length: 4, sequence length: 899 3249525       0x319575        Certificate in DER format (x509 v3), header length: 4, sequence length: 937 3250510       0x31994E        Certificate in DER format (x509 v3), header length: 4, sequence length: 1512 3252098       0x319F82        Certificate in DER format (x509 v3), header length: 4, sequence length: 935 3407767       0x33FF97        UEFI PI Firmware Volume, volume size: 786432, header size: 0, revision: 0, EFI Firmware File System, GUID: 7A9354D9-0468-444A-CE81-0BF617D890DF 3407927       0x340037        Microsoft executable, portable (PE) 3417911       0x342737        Microsoft executable, portable (PE) 3443895       0x348CB7        Microsoft executable, portable (PE) 3444534       0x348F36        mcrypt 2.2 encrypted data, algorithm: blowfish-448, mode: CBC, keymode: 8bit 3461431       0x34D137        Microsoft executable, portable (PE) 3464791       0x34DE57        Microsoft executable, portable (PE) 3472871       0x34FDE7        SHA256 hash constants, little endian 3511919       0x35966F        SHA256 hash constants, little endian 3681495       0x382CD7        Microsoft executable, portable (PE) 3686743       0x384157        SHA256 hash constants, little endian 3766999       0x397AD7        Microsoft executable, portable (PE) 3775703       0x399CD7        Microsoft executable, portable (PE) 3788767       0x39CFDF        SHA256 hash constants, little endian 3818423       0x3A43B7        Microsoft executable, portable (PE) 3852343       0x3AC837        Microsoft executable, portable (PE) 3856823       0x3AD9B7        Microsoft executable, portable (PE) 3858999       0x3AE237        Microsoft executable, portable (PE) 3874807       0x3B1FF7        Microsoft executable, portable (PE) 3877495       0x3B2A77        Microsoft executable, portable (PE) 3880119       0x3B34B7        Microsoft executable, portable (PE) 3881175       0x3B38D7        Microsoft executable, portable (PE) 3883831       0x3B4337        Microsoft executable, portable (PE) 3896023       0x3B72D7        Microsoft executable, portable (PE) 3909943       0x3BA937        Microsoft executable, portable (PE) 3910807       0x3BAC97        Microsoft executable, portable (PE) 3913079       0x3BB577        Microsoft executable, portable (PE) 3916247       0x3BC1D7        Microsoft executable, portable (PE) 3949503       0x3C43BF        SHA256 hash constants, little endian 3966935       0x3C87D7        Microsoft executable, portable (PE) 4017111       0x3D4BD7        Microsoft executable, portable (PE) 4028471       0x3D7837        Microsoft executable, portable (PE) 4029911       0x3D7DD7        Microsoft executable, portable (PE)