Modify IL Code during Run-time

[Codefans]

I have read a article about how to Modify IL Code during Run-time.

 

http://www.codeproject.com/Articles/463508/NET-CLR-Injection-Modify-IL-Code-during-Run-time

 

The author provide two version's binaries and code. (2012/11/05 and 2014/08/08)

 

But In my pc just 2012/11/05 version's app can run normally,

2014/08/08 version's app throw some error  "Initialization is failed with error [Failed to get addresses from server,Couldn't connect server.]!"

 

My test PC : WinXP X86

test app:  Test_x86_DotNet40_Release.exe

 

The author said as below:

 

"In previous version, the PDB file is downloaded and parsed locally with Microsoft symcheck.exe.

In the current version, I have made a web service to parse the addresses on the server and return the virtual addresses to clients. This will reduce the initialization time."

 

Maybe author's current version is refer to 2012/11/05, i can find web service link in 2012/11/05 code,2014/08/08 haven't.

 

Who can help me find the error in newer version,and how to fix it. Thanks.

-----------------------------------

 

I study this just want to write a jit tool similar Rick's (Dnguard author),he just show a picture in blog.

http://www.cnblogs.com/rick/archive/2007/07/08/810591.html

 

更新列表 Update List
IL反汇编来源 IL disassembling source
触发jit并捕获 Trigger the jit and capture
强制方法重新Jit  Mandatory methods to Jit
关闭  close

Ha ha ,it seems to have a long way to go to achieve the goal.

 

 

[Derberux]

i guess the problem come downloading symbols, all is fine for me.

 

 

decompress attached file and copy the files to the folder where you have the example, contains the symbols needed to use the program, it must look like 

 

Symbols.rar

Edited January 22, 2015 by Alcatraz3222

[Kurapica]

Check "ARTEAM EZINE ISSUE IV"

 

there is an article on how to modify MSIL code in runtime.

 

Page 66

[Codefans]

Alcatraz3222，thanks for your replay.

Maybe misunderstood my question.

In my pc,the old version can run normal,but newer version throw the error message.

according to your injection32.dll file's size in your picture, i guess you were tested in old version.

 

acturally,i want to study to write a tool to get special method's code which methodbody is empty when open in reflector.

 

Now i know profiling api is more useful than the method posted in post 1.

 

Similar dotNET MSIL dumper by Kurapica

(dump the body of every Method (Function, Procedure) called by the executable assembly you select...)

 

Alcatraz3222,Kurapica  thank you enthusiastic teach。

 

Every day after work to read two talent's article is really a kind of enjoyment.  

[NCK]

using C++ hook jit !

 

look here http://bbs.pediy.com/showthread.php?t=116218

 

sorry,my english just so so

[DragonX]

yes hook jit Can do it~~