GitBook: [master] 509 pages and 2 assets modified
This commit is contained in:
CPol
gitbook-bot
parent
cbe63cbab3
commit
75b9ac155c
Binary file not shown.
|
After Width: | Height: | Size: 6.6 KiB |
Binary file not shown.
|
After Width: | Height: | Size: 29 KiB |
|
|
@ -491,9 +491,9 @@
|
|||
|
||||
## Reversing
|
||||
|
||||
* [Reversing Tools & Basic Methods](reversing/reversing-tools-basic-methods/README.md)
|
||||
* [Blobrunner](reversing/reversing-tools-basic-methods/blobrunner.md)
|
||||
* [Common API used in Malware](reversing/common-api-used-in-malware.md)
|
||||
* [Reversing Tools](reversing/reversing-tools/README.md)
|
||||
* [Blobrunner](reversing/reversing-tools/blobrunner.md)
|
||||
* [Cryptographic/Compression Algorithms](reversing/cryptographic-algorithms/README.md)
|
||||
* [Unpacking binaries](reversing/cryptographic-algorithms/unpacking-binaries.md)
|
||||
* [Word Macros](reversing/word-macros.md)
|
||||
|
|
|
|||
|
|
@ -175,7 +175,7 @@ Then, decompress all the DLsL using [**xamarin-decompress**](https://github.com/
|
|||
python3 xamarin-decompress.py -o /path/to/decompressed/apk
|
||||
```
|
||||
|
||||
and finally you can use [**these recommended tools**](../../reversing/reversing-tools/#net-decompiler) to **read C\# code** from the DLLs.
|
||||
and finally you can use [**these recommended tools**](../../reversing/reversing-tools-basic-methods/#net-decompiler) to **read C\# code** from the DLLs.
|
||||
|
||||
### Other interesting functions
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,338 @@
|
|||
# Reversing Tools & Basic Methods
|
||||
|
||||
## Wasm decompiler / Wat compiler
|
||||
|
||||
Online:
|
||||
|
||||
* Use [https://webassembly.github.io/wabt/demo/wasm2wat/index.html](https://webassembly.github.io/wabt/demo/wasm2wat/index.html) to **decompile** from wasm \(binary\) to wat \(clear text\)
|
||||
* Use [https://webassembly.github.io/wabt/demo/wat2wasm/](https://webassembly.github.io/wabt/demo/wat2wasm/) to **compile** from wat to wasm
|
||||
* you can also try to use [https://wwwg.github.io/web-wasmdec/](https://wwwg.github.io/web-wasmdec/) to decompile
|
||||
|
||||
Software:
|
||||
|
||||
* [https://www.pnfsoftware.com/jeb/demo](https://www.pnfsoftware.com/jeb/demo)
|
||||
* [https://github.com/wwwg/wasmdec](https://github.com/wwwg/wasmdec)
|
||||
|
||||
## .Net decompiler
|
||||
|
||||
[https://github.com/icsharpcode/ILSpy](https://github.com/icsharpcode/ILSpy)
|
||||
[ILSpy plugin for Visual Studio Code](https://github.com/icsharpcode/ilspy-vscode): You can have it in any OS \(you can install it directly from VSCode, no need to download the git. Click on **Extensions** and **search ILSpy**\).
|
||||
If you need to **decompile**, **modify** and **recompile** again you can use: [**https://github.com/0xd4d/dnSpy/releases**](https://github.com/0xd4d/dnSpy/releases) \(**Right Click -> Modify Method** to change something inside a function\).
|
||||
You cloud also try [https://www.jetbrains.com/es-es/decompiler/](https://www.jetbrains.com/es-es/decompiler/)
|
||||
|
||||
### DNSpy Logging
|
||||
|
||||
In order to make **DNSpy log some information in a file**, you could use this .Net lines:
|
||||
|
||||
```bash
|
||||
using System.IO;
|
||||
path = "C:\\inetpub\\temp\\MyTest2.txt";
|
||||
File.AppendAllText(path, "Password: " + password + "\n");
|
||||
```
|
||||
|
||||
### DNSpy Debugging
|
||||
|
||||
In order to debug code using DNSpy you need to:
|
||||
|
||||
First, change the **Assembly attributes** related to **debugging**:
|
||||
|
||||
|
||||
|
||||
From:
|
||||
|
||||
```aspnet
|
||||
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
|
||||
```
|
||||
|
||||
To:
|
||||
|
||||
```text
|
||||
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.Default |
|
||||
DebuggableAttribute.DebuggingModes.DisableOptimizations |
|
||||
DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints |
|
||||
DebuggableAttribute.DebuggingModes.EnableEditAndContinue)]
|
||||
```
|
||||
|
||||
And click on **compile**:
|
||||
|
||||
|
||||
|
||||
Then save the new file on _**File >> Save module...**_:
|
||||
|
||||
|
||||
|
||||
This is necessary because if you don't do this, at **runtime** several **optimisations** will be applied to the code and it could be possible that while debugging a **break-point is never hit** or some **variables don't exist**.
|
||||
|
||||
Then, if your .Net application is being **run** by **IIS** you can **restart** it with:
|
||||
|
||||
```text
|
||||
iisreset /noforce
|
||||
```
|
||||
|
||||
Then, in order to start debugging you should close all the opened files and inside the **Debug Tab** select **Attach to Process...**:
|
||||
|
||||
|
||||
|
||||
Then select **w3wp.exe** to attach to the **IIS server** and click **attach**:
|
||||
|
||||
|
||||
|
||||
Now that we are debugging the process, it's time to stop it and load all the modules. First click on _Debug >> Break All_ and then click on _**Debug >> Windows >> Modules**_:
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
Click any module on **Modules** and selec**t Open All Modules**:
|
||||
|
||||
|
||||
|
||||
Right click any module in **Assembly Explorer** and click **Sort Assemblies**:
|
||||
|
||||
|
||||
|
||||
## Java decompiler
|
||||
|
||||
[https://github.com/skylot/jadx](https://github.com/skylot/jadx)
|
||||
[https://github.com/java-decompiler/jd-gui/releases](https://github.com/java-decompiler/jd-gui/releases)
|
||||
|
||||
## Debugging DLLs
|
||||
|
||||
### Using IDA
|
||||
|
||||
* **Load rundll32** \(64bits in C:\Windows\System32\rundll32.exe and 32 bits in C:\Windows\SysWOW64\rundll32.exe\)
|
||||
* Select **Windbg** debugger
|
||||
* Select "**Suspend on library load/unload**"
|
||||
|
||||
|
||||
|
||||
* Configure the **parameters** of the execution putting the **path to the DLL** and the function that you want to call:
|
||||
|
||||
|
||||
|
||||
Then, when you start debugging **the execution will be stopped when each DLL is loaded**, then, when rundll32 load your DLL the execution will be stopped.
|
||||
|
||||
But, how can you get to the code of the DLL that was lodaded? Using this method, I don't know how.
|
||||
|
||||
### Using x64dbg/x32dbg
|
||||
|
||||
* **Load rundll32** \(64bits in C:\Windows\System32\rundll32.exe and 32 bits in C:\Windows\SysWOW64\rundll32.exe\)
|
||||
* **Change the Command Line** \( _File --> Change Command Line_ \) and set the path of the dll and the function that you want to call, for example: "C:\Windows\SysWOW64\rundll32.exe" "Z:\shared\Cybercamp\rev2\\14.ridii\_2.dll",DLLMain
|
||||
* Change _Options --> Settings_ and select "**DLL Entry**".
|
||||
* Then **start the execution**, the debugger will stop at each dll main, at some point you will **stop in the dll Entry of your dll**. From there, just search for the points where you want to put a breakpoint.
|
||||
|
||||
Notice that when the execution is stopped by any reason in win64dbg you can see **in which code you are** looking in the **top of the win64dbg window**:
|
||||
|
||||
|
||||
|
||||
Then, looking to this ca see when the execution was stopped in the dll you want to debug.
|
||||
|
||||
## ARM & MIPS
|
||||
|
||||
{% embed url="https://github.com/nongiach/arm\_now" %}
|
||||
|
||||
## Shellcodes
|
||||
|
||||
### Debugging a shellcode with blobrunner
|
||||
|
||||
[**Blobrunner**](https://github.com/OALabs/BlobRunner) will **allocate** the **shellcode** inside a space of memory, will **indicate** you the **memory address** were the shellcode was allocated and will **stop** the execution.
|
||||
Then, you need to **attach a debugger** \(Ida or x64dbg\) to the process and put a **breakpoint the indicated memory address** and **resume** the execution. This way you will be debugging the shellcode.
|
||||
|
||||
The releases github page contains zips containing the compiled releases: [https://github.com/OALabs/BlobRunner/releases/tag/v0.0.5](https://github.com/OALabs/BlobRunner/releases/tag/v0.0.5)
|
||||
You can find a slightly modified version of Blobrunner in the following link. In order to compile it just **create a C/C++ project in Visual Studio Code, copy and paste the code and build it**.
|
||||
|
||||
{% page-ref page="blobrunner.md" %}
|
||||
|
||||
### Debugging a shellcode with jmp2it
|
||||
|
||||
\*\*\*\*[**jmp2it** ](https://github.com/adamkramer/jmp2it/releases/tag/v1.4)is very similar to blobrunner. It will **allocate** the **shellcode** inside a space of memory, and start an **eternal loop**. You then need to **attach the debugger** to the process, **play start wait 2-5 secs and press stop** and you will find yourself inside the **eternal loop**. Jump to the next instruction of the eternal loop as it will be a call to the shellcode, and finally you will find yourself executing the shellcode.
|
||||
|
||||
|
||||
|
||||
You can download a compiled version of [jmp2it inside the releases page](https://github.com/adamkramer/jmp2it/releases/).
|
||||
|
||||
### Debugging shellcode using Cutter
|
||||
|
||||
\*\*\*\*[**Cutter**](https://github.com/rizinorg/cutter/releases/tag/v1.12.0) is the GUI of radare. Using cutter you can emulate the shellcode and inspect it dynamically.
|
||||
|
||||
Note that Cutter allows you to "Open File" and "Open Shellcode". In my case when I opened the shellcode as a file it decompiled it correctly, but when I opened it as a shellcode it didn't:
|
||||
|
||||
|
||||
|
||||
In order to start the emulation in the place you want to, set a bp there and apparently cutter will automatically start the emulation from there:
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
You can see the stack for example inside a hex dump:
|
||||
|
||||
|
||||
|
||||
### Deobfuscating shellcode and getting executed functions
|
||||
|
||||
You should try ****[**scdbg**](http://sandsprite.com/blogs/index.php?uid=7&pid=152).
|
||||
It will tell you things like **which functions** is the shellcode using and if the shellcode is **decoding** itself in memory.
|
||||
|
||||
```bash
|
||||
scdbg.exe -f shellcode # Get info
|
||||
scdbg.exe -f shellcode -r #show analysis report at end of run
|
||||
scdbg.exe -f shellcode -i -r #enable interactive hooks (file and network) and show analysis report at end of run
|
||||
scdbg.exe -f shellcode -d #Dump decoded shellcode
|
||||
scdbg.exe -f shellcode /findsc #Find offset where starts
|
||||
scdbg.exe -f shellcode /foff 0x0000004D #Start the executing in that offset
|
||||
```
|
||||
|
||||
scDbg also counts with a graphical launcher where you can select the options you want and execute the shellcode
|
||||
|
||||
|
||||
|
||||
The **Create Dump** option will dump the final shellcode if any change is done to the shellcode dynamically in memory \(useful to download the decoded shellcode\). The **start offset** can be useful to start the shellcode at a specific offset. The **Debug Shell** option is useful to debug the shellcode using the scDbg terminal \(however I find any of the options explained before better for this matter as you will be able to use Ida or x64dbg\).
|
||||
|
||||
### Disassembling using CyberChef
|
||||
|
||||
Upload you shellcode file as input and use the following receipt to decompile it: [https://gchq.github.io/CyberChef/\#recipe=To\_Hex\('Space',0\)Disassemble\_x86\('32','Full%20x86%20architecture',16,0,true,true\)](https://gchq.github.io/CyberChef/#recipe=To_Hex%28'Space',0%29Disassemble_x86%28'32','Full%20x86%20architecture',16,0,true,true%29)
|
||||
|
||||
## [Movfuscator](https://github.com/xoreaxeaxeax/movfuscator)
|
||||
|
||||
This obfuscator **modify all the instructions for `mov`**\(yeah, really cool\). It also uses interruptions to change executions flows. For more information about how does it works:
|
||||
|
||||
* [https://www.youtube.com/watch?v=2VF\_wPkiBJY](https://www.youtube.com/watch?v=2VF_wPkiBJY)
|
||||
* [https://github.com/xoreaxeaxeax/movfuscator/blob/master/slides/domas\_2015\_the\_movfuscator.pdf](https://github.com/xoreaxeaxeax/movfuscator/blob/master/slides/domas_2015_the_movfuscator.pdf)
|
||||
|
||||
If you are lucky [demovfuscator ](https://github.com/kirschju/demovfuscator)will deofuscate the binary. It has several dependencies
|
||||
|
||||
```text
|
||||
apt-get install libcapstone-dev
|
||||
apt-get install libz3-dev
|
||||
```
|
||||
|
||||
And [install keystone](https://github.com/keystone-engine/keystone/blob/master/docs/COMPILE-NIX.md) \(`apt-get install cmake; mkdir build; cd build; ../make-share.sh; make install`\)
|
||||
|
||||
If you are playing a **CTF, this workaround to find the flag** could be very useful: [https://dustri.org/b/defeating-the-recons-movfuscator-crackme.html](https://dustri.org/b/defeating-the-recons-movfuscator-crackme.html)
|
||||
|
||||
## Delphi
|
||||
|
||||
For Delphi compiled binaries you can use [https://github.com/crypto2011/IDR](https://github.com/crypto2011/IDR)
|
||||
|
||||
## GBA - Game Body Advance
|
||||
|
||||
If you get the **binary** of a GBA game you can use different tools to **emulate** and **debug** it:
|
||||
|
||||
* \*\*\*\*[**no$gba**](https://problemkaputt.de/gba.htm) \(_Download the debug version_\) - Contains a debugger with interface
|
||||
* \*\*\*\*[**mgba** ](https://mgba.io/)- Contains a CLI debugger
|
||||
* \*\*\*\*[**gba-ghidra-loader**](https://github.com/pudii/gba-ghidra-loader) ****- Ghidra plugin
|
||||
* [**GhidraGBA**](https://github.com/SiD3W4y/GhidraGBA) ****- Ghidra plugin
|
||||
|
||||
In [**no$gba**](https://problemkaputt.de/gba.htm), in _**Options --> Emulation Setup --> Controls**_ ****you can see how to press the Game Boy Advance **buttons**
|
||||
|
||||
|
||||
|
||||
When pressed, each **key has a value** to identify it:
|
||||
|
||||
```text
|
||||
A = 1
|
||||
B = 2
|
||||
SELECT = 4
|
||||
START = 8
|
||||
RIGHT = 16
|
||||
LEFT = 32
|
||||
UP = 64
|
||||
DOWN = 128
|
||||
R = 256
|
||||
L = 256
|
||||
```
|
||||
|
||||
So, in this kind of programs, the an interesting part will be **how the program treats the user input**. In the address **0x4000130** you will find the commonly found function: **KEYINPUT.**
|
||||
|
||||
|
||||
|
||||
In the previous image you can find that the function is called from **FUN\_080015a8** \(addresses: _0x080015fa_ and _0x080017ac_\).
|
||||
|
||||
In that function, after some init operations \(without any importance\):
|
||||
|
||||
```c
|
||||
void FUN_080015a8(void)
|
||||
|
||||
{
|
||||
ushort uVar1;
|
||||
undefined4 uVar2;
|
||||
undefined4 uVar3;
|
||||
ushort uVar4;
|
||||
int iVar5;
|
||||
ushort *puVar6;
|
||||
undefined *local_2c;
|
||||
|
||||
DISPCNT = 0x1140;
|
||||
FUN_08000a74();
|
||||
FUN_08000ce4(1);
|
||||
DISPCNT = 0x404;
|
||||
FUN_08000dd0(&DAT_02009584,0x6000000,&DAT_030000dc);
|
||||
FUN_08000354(&DAT_030000dc,0x3c);
|
||||
uVar4 = DAT_030004d8;
|
||||
```
|
||||
|
||||
It's found this code:
|
||||
|
||||
```c
|
||||
do {
|
||||
DAT_030004da = uVar4; //This is the last key pressed
|
||||
DAT_030004d8 = KEYINPUT | 0xfc00;
|
||||
puVar6 = &DAT_0200b03c;
|
||||
uVar4 = DAT_030004d8;
|
||||
do {
|
||||
uVar2 = DAT_030004dc;
|
||||
uVar1 = *puVar6;
|
||||
if ((uVar1 & DAT_030004da & ~uVar4) != 0) {
|
||||
```
|
||||
|
||||
The last if is checking **`uVar4`** is in the **last Keys** and not is the current key, also called letting go off a button \(current key is stored in **`uVar1`**\).
|
||||
|
||||
```c
|
||||
if (uVar1 == 4) {
|
||||
DAT_030000d4 = 0;
|
||||
uVar3 = FUN_08001c24(DAT_030004dc);
|
||||
FUN_08001868(uVar2,0,uVar3);
|
||||
DAT_05000000 = 0x1483;
|
||||
FUN_08001844(&DAT_0200ba18);
|
||||
FUN_08001844(&DAT_0200ba20,&DAT_0200ba40);
|
||||
DAT_030000d8 = 0;
|
||||
uVar4 = DAT_030004d8;
|
||||
}
|
||||
else {
|
||||
if (uVar1 == 8) {
|
||||
if (DAT_030000d8 == 0xf3) {
|
||||
DISPCNT = 0x404;
|
||||
FUN_08000dd0(&DAT_02008aac,0x6000000,&DAT_030000dc);
|
||||
FUN_08000354(&DAT_030000dc,0x3c);
|
||||
uVar4 = DAT_030004d8;
|
||||
}
|
||||
}
|
||||
else {
|
||||
if (DAT_030000d4 < 8) {
|
||||
DAT_030000d4 = DAT_030000d4 + 1;
|
||||
FUN_08000864();
|
||||
if (uVar1 == 0x10) {
|
||||
DAT_030000d8 = DAT_030000d8 + 0x3a;
|
||||
```
|
||||
|
||||
In the previous code you can see that we are comparing **uVar1** \(the place where the **value of the pressed button** is\) with some values:
|
||||
|
||||
* First, it's compared with the **value 4** \(**SELECT** button\): In the challenge this button clears the screen
|
||||
* Then, it's comparing it with the **value 8** \(**START** button\): In the challenge this checks is the code is valid to get the flag.
|
||||
* In this case the var **`DAT_030000d8`** is compared with 0xf3 and if the value is the same some code is executed.
|
||||
* In any other cases, some cont \(`DAT_030000d4`\) is checked. It's a cont because it's adding 1 right after entering in the code. **I**f less than 8 something that involves **adding** values to **`DAT_030000d8`** is done \(basically it's adding the values of the keys pressed in this variable as long as the cont is less than 8\).
|
||||
|
||||
So, in this challenge, knowing the values of the buttons, you needed to **press a combination with a length smaller than 8 that the resulting addition is 0xf3.**
|
||||
|
||||
**Reference for this tutorial:** [**https://exp.codes/Nostalgia/**](https://exp.codes/Nostalgia/)\*\*\*\*
|
||||
|
||||
## Game Boy
|
||||
|
||||
{% embed url="https://www.youtube.com/watch?v=VVbRe7wr3G4" %}
|
||||
|
||||
## Courses
|
||||
|
||||
* [https://github.com/0xZ0F/Z0FCourse\_ReverseEngineering](https://github.com/0xZ0F/Z0FCourse_ReverseEngineering)
|
||||
* [https://github.com/malrev/ABD](https://github.com/malrev/ABD) \(Binary deobfuscation\)
|
||||
|
||||
|
|
@ -0,0 +1,209 @@
|
|||
# Blobrunner
|
||||
|
||||
The only modified line from the [original code](https://github.com/OALabs/BlobRunner) is the line 10.
|
||||
In order to compile it just **create a C/C++ project in Visual Studio Code, copy and paste the code and build it**.
|
||||
|
||||
```c
|
||||
#include <stdio.h>
|
||||
#include <windows.h>
|
||||
#include <stdlib.h>
|
||||
|
||||
#ifdef _WIN64
|
||||
#include <WinBase.h>
|
||||
#endif
|
||||
|
||||
// Define bool
|
||||
#pragma warning(disable:4996)
|
||||
#define true 1
|
||||
#define false 0
|
||||
|
||||
const char* _version = "0.0.5";
|
||||
|
||||
const char* _banner = " __________.__ ___. __________\n"
|
||||
" \\______ \\ | ____\\_ |__\\______ \\__ __ ____ ____ ___________ \n"
|
||||
" | | _/ | / _ \\| __ \\| _/ | \\/ \\ / \\_/ __ \\_ __ \\ \n"
|
||||
" | | \\ |_( <_> ) \\_\\ \\ | \\ | / | \\ | \\ ___/| | \\/ \n"
|
||||
" |______ /____/\\____/|___ /____|_ /____/|___| /___| /\\___ >__| \n"
|
||||
" \\/ \\/ \\/ \\/ \\/ \\/ \n\n"
|
||||
" %s \n\n";
|
||||
|
||||
|
||||
void banner() {
|
||||
system("cls");
|
||||
printf(_banner, _version);
|
||||
return;
|
||||
}
|
||||
|
||||
LPVOID process_file(char* inputfile_name, bool jit, int offset, bool debug) {
|
||||
LPVOID lpvBase;
|
||||
FILE* file;
|
||||
unsigned long fileLen;
|
||||
char* buffer;
|
||||
DWORD dummy;
|
||||
|
||||
file = fopen(inputfile_name, "rb");
|
||||
|
||||
if (!file) {
|
||||
printf(" [!] Error: Unable to open %s\n", inputfile_name);
|
||||
|
||||
return (LPVOID)NULL;
|
||||
}
|
||||
|
||||
printf(" [*] Reading file...\n");
|
||||
fseek(file, 0, SEEK_END);
|
||||
fileLen = ftell(file); //Get Length
|
||||
|
||||
printf(" [*] File Size: 0x%04x\n", fileLen);
|
||||
fseek(file, 0, SEEK_SET); //Reset
|
||||
|
||||
fileLen += 1;
|
||||
|
||||
buffer = (char*)malloc(fileLen); //Create Buffer
|
||||
fread(buffer, fileLen, 1, file);
|
||||
fclose(file);
|
||||
|
||||
printf(" [*] Allocating Memory...");
|
||||
|
||||
lpvBase = VirtualAlloc(NULL, fileLen, 0x3000, 0x40);
|
||||
|
||||
printf(".Allocated!\n");
|
||||
printf(" [*] |-Base: 0x%08x\n", (int)(size_t)lpvBase);
|
||||
printf(" [*] Copying input data...\n");
|
||||
|
||||
CopyMemory(lpvBase, buffer, fileLen);
|
||||
return lpvBase;
|
||||
}
|
||||
|
||||
void execute(LPVOID base, int offset, bool nopause, bool jit, bool debug)
|
||||
{
|
||||
LPVOID shell_entry;
|
||||
|
||||
#ifdef _WIN64
|
||||
DWORD thread_id;
|
||||
HANDLE thread_handle;
|
||||
const char msg[] = " [*] Navigate to the Thread Entry and set a breakpoint. Then press any key to resume the thread.\n";
|
||||
#else
|
||||
const char msg[] = " [*] Navigate to the EP and set a breakpoint. Then press any key to jump to the shellcode.\n";
|
||||
#endif
|
||||
|
||||
shell_entry = (LPVOID)((UINT_PTR)base + offset);
|
||||
|
||||
#ifdef _WIN64
|
||||
|
||||
printf(" [*] Creating Suspended Thread...\n");
|
||||
thread_handle = CreateThread(
|
||||
NULL, // Attributes
|
||||
0, // Stack size (Default)
|
||||
shell_entry, // Thread EP
|
||||
NULL, // Arguments
|
||||
0x4, // Create Suspended
|
||||
&thread_id); // Thread identifier
|
||||
|
||||
if (thread_handle == NULL) {
|
||||
printf(" [!] Error Creating thread...");
|
||||
return;
|
||||
}
|
||||
printf(" [*] Created Thread: [%d]\n", thread_id);
|
||||
printf(" [*] Thread Entry: 0x%016x\n", (int)(size_t)shell_entry);
|
||||
|
||||
#endif
|
||||
|
||||
if (nopause == false) {
|
||||
printf("%s", msg);
|
||||
getchar();
|
||||
}
|
||||
else
|
||||
{
|
||||
if (jit == true) {
|
||||
// Force an exception by making the first byte not executable.
|
||||
// This will cause
|
||||
DWORD oldp;
|
||||
|
||||
printf(" [*] Removing EXECUTE access to trigger exception...\n");
|
||||
|
||||
VirtualProtect(shell_entry, 1 , PAGE_READWRITE, &oldp);
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef _WIN64
|
||||
printf(" [*] Resuming Thread..\n");
|
||||
ResumeThread(thread_handle);
|
||||
#else
|
||||
printf(" [*] Entry: 0x%08x\n", (int)(size_t)shell_entry);
|
||||
printf(" [*] Jumping to shellcode\n");
|
||||
__asm jmp shell_entry;
|
||||
#endif
|
||||
}
|
||||
|
||||
void print_help() {
|
||||
printf(" [!] Error: No file!\n\n");
|
||||
printf(" Required args: <inputfile>\n\n");
|
||||
printf(" Optional Args:\n");
|
||||
printf(" --offset <offset> The offset to jump into.\n");
|
||||
printf(" --nopause Don't pause before jumping to shellcode. Danger!!! \n");
|
||||
printf(" --jit Forces an exception by removing the EXECUTE permission from the alloacted memory.\n");
|
||||
printf(" --debug Verbose logging.\n");
|
||||
printf(" --version Print version and exit.\n\n");
|
||||
}
|
||||
|
||||
int main(int argc, char* argv[])
|
||||
{
|
||||
LPVOID base;
|
||||
int i;
|
||||
int offset = 0;
|
||||
bool nopause = false;
|
||||
bool debug = false;
|
||||
bool jit = false;
|
||||
char* nptr;
|
||||
|
||||
banner();
|
||||
|
||||
if (argc < 2) {
|
||||
print_help();
|
||||
return -1;
|
||||
}
|
||||
|
||||
printf(" [*] Using file: %s \n", argv[1]);
|
||||
|
||||
for (i = 2; i < argc; i++) {
|
||||
if (strcmp(argv[i], "--offset") == 0) {
|
||||
printf(" [*] Parsing offset...\n");
|
||||
i = i + 1;
|
||||
if (strncmp(argv[i], "0x", 2) == 0) {
|
||||
offset = strtol(argv[i], &nptr, 16);
|
||||
}
|
||||
else {
|
||||
offset = strtol(argv[i], &nptr, 10);
|
||||
}
|
||||
}
|
||||
else if (strcmp(argv[i], "--nopause") == 0) {
|
||||
nopause = true;
|
||||
}
|
||||
else if (strcmp(argv[i], "--jit") == 0) {
|
||||
jit = true;
|
||||
nopause = true;
|
||||
}
|
||||
else if (strcmp(argv[i], "--debug") == 0) {
|
||||
debug = true;
|
||||
}
|
||||
else if (strcmp(argv[i], "--version") == 0) {
|
||||
printf("Version: %s", _version);
|
||||
}
|
||||
else {
|
||||
printf("[!] Warning: Unknown arg: %s\n", argv[i]);
|
||||
}
|
||||
}
|
||||
|
||||
base = process_file(argv[1], jit, offset, debug);
|
||||
if (base == NULL) {
|
||||
printf(" [!] Exiting...");
|
||||
return -1;
|
||||
}
|
||||
printf(" [*] Using offset: 0x%08x\n", offset);
|
||||
execute(base, offset, nopause, jit, debug);
|
||||
printf("Pausing - Press any key to quit.\n");
|
||||
getchar();
|
||||
return 0;
|
||||
}
|
||||
```
|
||||
|
||||
Loading…
Reference in New Issue