Hikari_pe_x64 !!top!! 〈Top – How-To〉

((annotate("nohikari"))) void normal_function() // no obfuscation

clang-cl.exe /O2 /GS- /c source.c ^ -mllvm -enable-pass-plugin=C:\Hikari\lib\hikari_pe_x64.dll ^ -mllvm -sub -mllvm -sub_loop=1 | Flag | Effect | |------|--------| | -sub | Instruction substitution | | -sub_loop=1 | Substitution on loops | | -bcf | Bogus control flow | | -bcf_loop=1 | Bogus flow in loops | | -fla | Control flow flattening | | -fla_loop=1 | Flatten loops | | -split | Basic block splitting | | -split_num=2 | Split into 2 blocks | | -indibran | Indirect branching (opaque predicates) |

lld-link.exe /SUBSYSTEM:CONSOLE /ENTRY:main /MACHINE:X64 /OUT:obfuscated.exe payload.obj Do apply obfuscation at link stage – only per TU (translation unit). 6. Advanced: Selective Obfuscation with __attribute__ Annotate functions to control passes: hikari_pe_x64

C:\Hikari\ bin\ clang-cl.exe lld-link.exe lib\ hikari_pe_x64.dll <-- plugin Add to environment PATH : C:\Hikari\bin Use the plugin flag :

loc_obf_1: mov eax, switch_var cmp eax, 0x1 -> jmp loc_realblock1 cmp eax, 0x2 -> jmp loc_realblock2 ... If prebuilt plugin fails: If prebuilt plugin fails: 1

1. What is hikari_pe_x64? hikari_pe_x64 is a LLVM obfuscator plugin (based on Hikari/Obfuscator-LLVM) specifically compiled to work with MSVC/clang-cl on Windows targeting x64 PE executables . It transforms IR code to resist static/dynamic analysis. ⚠️ Not to be confused with “hikari” (anime character). This is a security research tool. 2. Prerequisites | Component | Requirement | |-----------|-------------| | Windows | 10/11 (x64) | | LLVM/Clang | 15.x or 16.x (clang-cl) | | Build tools | Visual Studio 2022 (with “C++ CMake tools”) | | Python | 3.8+ (for scripts) |

clang-cl.exe /O2 /GS- /c payload.c -mllvm -enable-pass-plugin=C:\Hikari\lib\hikari_pe_x64.dll -mllvm -sub -mllvm -bcf -mllvm -fla -mllvm -split Use lld-link.exe (or MSVC link.exe): It transforms IR code to resist static/dynamic analysis

__attribute__((annotate("sub"))) __attribute__((annotate("fla"))) void critical_function() // heavily obfuscated