Skip to content

Instantly share code, notes, and snippets.

View mesaleh's full-sized avatar

Moustafa Saleh mesaleh

10 followers · 6 following
View GitHub Profile
@mesaleh
mesaleh / msgbox_shellcode79.c
Created April 21, 2015 01:03
Msgbox shellcode in 79 bytes
unsigned char shell[79] = {
0x33, 0xD2, 0x52, 0x68, 0x4D, 0x30, 0x53, 0x41, 0x54, 0x52, 0x64, 0x8B,
0x72, 0x30, 0xB2, 0x21, 0x4A, 0x8B, 0x74, 0x32, 0xEC, 0x8B, 0x74, 0x32,
0xEC, 0xAD, 0x8B, 0x30, 0x8B, 0x7E, 0x18, 0x8B, 0x5F, 0x3C, 0x8B, 0x5C,
0x3B, 0x78, 0x03, 0xD3, 0x8B, 0x34, 0x3A, 0x03, 0xF7, 0x8B, 0x4C, 0x3B,
0x24, 0x03, 0xCF, 0x33, 0xD2, 0x0F, 0xB7, 0x2C, 0x51, 0x42, 0xAD, 0x81,
0x3C, 0x38, 0x46, 0x61, 0x74, 0x61, 0x75, 0xF1, 0x8B, 0x74, 0x3B, 0x1C,
0x03, 0xF7, 0x03, 0x3C, 0xAE, 0xFF, 0xD7
};
@mesaleh
mesaleh / getImports_snippet.cpp
Created April 18, 2015 02:48
template <class T> // T: PIMAGE_THUNK_DATA64 or PIMAGE_THUNK_DATA32
vector<string> PE::getModuleAPIs(T pThunk, PIMAGE_SECTION_HEADER IT)
{
vector<string> APIs;
// check if IMAGE_THUNK_DATA is within the section of Import directory, otherwise, most likely the file is packed or manualy manipulated.
if (((DWORD)pThunk < ((DWORD)LoadAddr + IT->PointerToRawData)) || ((DWORD)pThunk >((DWORD)LoadAddr + IT->PointerToRawData + IT->SizeOfRawData))) {
Suspicious |= SUSPICIOUS_IMPORTS;
}
@mesaleh
mesaleh / test_dll.c
Created April 18, 2015 01:12
/*
* Moustafa Saleh ([email protected])
*
* Test DLL
* Compile:
* GCC: gcc test_dll.c -o test_dll_gcc.dll -shared -Wl,--out-implib,test_dll_gcc.a -DBUILDING_TEST_DLL
* CL: cl test_dll.c kernel32.lib user32.lib /LD /D BUILDING_TEST_DLL
*/
#include <windows.h>
@mesaleh
mesaleh / test.c
Created April 18, 2015 01:11
/*
* Moustafa Saleh ([email protected])
*
* Compile:
* gcc test.c -o test.exe -L. -l:test_dll_gcc.a
* cl test.c test_dll.lib
*/
__declspec(dllimport) void __stdcall bar();
@mesaleh
mesaleh / STRING_structure.c
Last active August 29, 2015 14:19
STRING structure
typedef struct _STRING {
USHORT Length;
USHORT MaximumLength;
PCHAR Buffer;
} STRING, OEM_STRING, *PSTRING;
@mesaleh
mesaleh / ZwDelayExecution1.cpp
Last active June 7, 2021 10:22
Used in my blog http://moustafasaleh.blogspot.com/2015/03/using-windows-native-apis-with-cl-and.html
/*
http://moustafasaleh.blogspot.com/ (@msaleh83)
Example of dynamically linking ZwDelayExecution Windows internal API
compile:
cl ZwDelayExecution1.cpp kernel32.lib user32.lib
gcc ZwDelayExecution1.cpp -o ZwDelayExecution1.exe
*/
#define UNICODE
@mesaleh
mesaleh / ZwDelayExecution2.cpp
Last active August 29, 2015 14:17
Used in my blog http://moustafasaleh.blogspot.com/2015/03/using-windows-native-apis-with-cl-and.html
/*
http://moustafasaleh.blogspot.com/ (@msaleh83)
Example of using ZwDelayExecution Windows internal API by importing ntdll.lib
compile:
cl ZwDelayExecution2.cpp kernel32.lib ntdll.lib user32.lib
gcc ZwDelayExecution2.cpp -o ZwDelayExecution1.exe -lntdll
*/
#define UNICODE
@mesaleh
mesaleh / peid_vul1.c
Last active August 29, 2015 14:14
Used for my blog entry to describe PEiD vulnerability
// getting the exact size of the section
int getMinSectionSize()
{
int size = min(VirtualSize, SizeOfRawData)
// ** if PointerToRawData is negative, overflow will happen here.
int bound = file_size - PointerToRawData
if (size <= bound) return size;
else size = bound;
@mesaleh
mesaleh / peid_vul2.c
Last active August 29, 2015 14:14
Used for my blog entry to describe PEiD vulnerability
int size = getMinSectionSize()
// ** overflow can happen here too
int bound = size + PointerToRawData;
if (bound <= file_size) ACCEPTED;
else INVALID_FILE;