Question

因此，我有两个文件，一个是字节文件，一个是asm文件。 asm文件的文本具有多个部分，例如.data，.rdata，.text等。我正在尝试创建一个代码，该代码可以根据asm文件中的位置从字节部分删除十六进制。基本上，这两个文件是相同的，只是asm文件具有指令，而bytes文件则包含asm的十六进制。例如，我要删除字节文件中的所有.text十六进制，方法是在asm中查找.text的第一个实例，然后检入字节文件并删除这些行。

clc;clear all;close all;

% read the entire asm file into one string
C1=fileread('kD8OJCT6bsvcBU9IVaeA.asm');

% find the location in asm file string that start with '.rdata'
temp1=strfind(C1,'.idata');

ii=1;
jj=1;

while ii<=length(temp1)

    % read the wholeset of numbers after '.rdata:'
    temp2=C1(temp1(ii)+7:temp1(ii)+13);

    % there are some '.rdata:' that are not at the beginning of the rows
    % and they start with 'off'. So, we discard them
    if temp2(1)~='o'
        num{jj}=temp2; % the cell array containing all the numbers after '.rdata:'
        jj=jj+1;
    end
    ii=ii+1;
end

% read the entire bytes file into one string
C2=fileread('kD8OJCT6bsvcBU9IVaeA.bytes');
C3=C2; % the string that will be modified and written as the new bytes file

% find the location in bytes file string that start with number sets in the 
% num cell array
ii=1;
jj=1;
while ii<=length(num)
   temp3=strfind(C2,num{ii});
   if ~isempty(temp3)
       temp4(jj)=temp3; % temp 4 contains the beginning address of the lines containing the number sets 
       jj=jj+1;
   end
   ii=ii+1;
end

temp4=unique(temp4);

% deleting the lines in the .bytes file (each line contains 56 characters
for ii=1:length(temp4)
   C3(temp4(ii):temp4(ii)+56)=[];
end

% write the modified data to the bytes file
fileID = fopen('file3.bytes','w');
fwrite(fileID,C3);
fclose(fileID);

Heres how the output looks when its printed into a new file. The spacing is all messed up and im lost

MATLAB尝试根据asm文件的各部分删除行。

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