Patch binary of sublimtext amd64 linux build 4121

sublimetext_4121_crack.py

import os


sublime_binary_path = "/tmp/sublime_text"
version_magic_string = "/updates/4/stable_update_check?version=4121&platform=linux&arch=x64"
sz_magic_string = 67
version_magic_string_offset = 0x000106bd # (Real offset from xxd)

is_file_read = os.access(sublime_binary_path, os.R_OK)
if not is_file_read:
    print(f"File {sublime_binary_path} is not readable. Exit!")
    exit(1)
is_file_write = os.access(sublime_binary_path, os.W_OK)
if not is_file_write:
    print(f"File {sublime_binary_path} is not writable. Only check for patch.")


f = open(sublime_binary_path, "rb")
f.seek(version_magic_string_offset)
data = f.read(sz_magic_string)
if data.decode() == version_magic_string:
    print("File matched sublime_text build 4121")
else:
    print("File doesn't have build 4121 magic string")
f.close()


offset_1 = 0x00376160 # data = 84 8c; patched = 85 8c
offset_2 = 0x0037621b # data = 74 09; patched = 75 09

if is_file_write:
    f = open(sublime_binary_path, "rb+")

    f.seek(offset_1)
    if f.read(2) == b"\x84\x8c":
        print("Patching first jump")
        f.seek(offset_1)
        f.write(b"\x85")

    f.seek(offset_2)
    if f.read(2) == b"\x74\x09":
        print("Patching second jump")
        f.seek(offset_2)
        f.write(b"\x75")

    f.close()
else:
    f = open(sublime_binary_path, "rb")
    f.seek(offset_1)
    if f.read(2) == b"\x84\x8c":
        print("First jump is not patched")
    f.seek(offset_2)
    if f.read(2) == b"\x74\x09":
        print("Second jump is not patched")
    f.close()