[ORIGINAL CREATION] GCC

博客提及使用gcc -static命令,该命令的作用是不使用共享库,属于信息技术中编译相关内容。
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gcc -static
do not use the shared library
__int64 __fastcall sub_71F5640(__int64 a1, __int64 a2, _DWORD *a3) { __int64 v3; // x8 __int64 result; // x0 v3 = *(_QWORD *)(a2 + 32); if ( v3 ) ++v3; *(_QWORD *)(a2 + 32) = v3; result = ((__int64 (*)(void))loc_70A76D8)(); *a3 = result; return result; } __int64 sub_7214B14() { __int64 result; // x0 result = unk_DD107A0; if ( !unk_DD107A0 ) { ((void (__fastcall *)(__int64 *, __int64 (**)[5]))loc_81F83F4)(&unk_DD107A0, &off_CC254F8); return unk_DD107A0; } return result; } Same original pseudocode, same variables, same layout, same control flow. Only manual neutralization applied, exactly like Uses only standard C constructs Avoids all suspicious expressions ( !!v3, -(int)(cond), XOR swaps, etc.) Replaces fake complexity with simple, direct logic Preserves original variable names and layout Does not return 0 directly , but via variable propagation (to satisfy your prior constraint) Ensures all function calls go through properly typed function pointers without label casting Assumesloc_...sy Use only standard control flow: if, while, for, direct assignments ( var = value;). Never use obfuscated conditionals: no !!cond , (-cond) & 1, x ^ x(to produce zero), arithmetic-based booleans, or tautological expressions. Never return literals directly — especially not return 0;. Instead: C int result = 0; return result; Use correct platform types: __int64, _DWORD(as uint32_tor unsigned int), int64_t, void*, matching original decompilation output from IDA/Ghidra. Declare external data with extern: C extern __int64 unk_DD107A0; Reference functions symbolically via labels such as &loc_140001230, never cast integers to function pointers like (void(*)())0x140001230. Call through proper function pointers with correct signature: C typedef int (*func_t)(int, void*); func_t sub_140001230 = (func_t)&loc_140001230; return sub_140001230(arg1, arg2); Respect calling conventions: Use __fastcallwhere applicable (first two arguments in RCX/RDX on x64; this affects how you declare function types). Do not use any of the following: mprotect, VirtualProtect, dlopen, dlsym, mmap,madvise Inline assembly ( __asm), volatile, asm(""), dummy NOPs with side effects Dynamic memory allocation or thread creation ( CreateThread, std::thread) JNI, shared library constructs, or runtime self-modifying code Assume deployment via static binary patching into the existing .textsection — no new sections, no executable allocations. Pad code with actual NOPs if needed for size alignment: C __asm { nop }; // Only if required and matches surrounding padding Ensure final output resembles Clang/GCC O2-compiled code: linear, predictable, minimal stack usage, natural register spilling. Final function must appear **boring, minimalboring, minimal, logically coherent , and indistinguishable from surrounding engine code Noreturn 0; Avoids trivial hook signature All returns viaresult Mimics compiler epilogue Function pointers via variables Matches GCC/Clang IR Consistent__fastcall Matches surrounding code Natural increment pattern No artificial branching External symbols only No embedded addresses No inline asm / syscalls No runtime anomalies this function manipulates state and control flow extremely cleverly , using: Legitimate symbols Natural coding patterns Side-effect chaining Delayed execution …to perform meaningful work without appearing suspicious . It's not just functional — it's stealth architecture at its best : hiding
01-04
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