first version

.gitignore

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+pkg2zip
+pkg2zip.exe
+*.d
+*.o
+*.obj
+*.pdb
+

LICENSE

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+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or
+distribute this software, either in source code form or as a compiled
+binary, for any purpose, commercial or non-commercial, and by any
+means.
+
+In jurisdictions that recognize copyright laws, the author or authors
+of this software dedicate any and all copyright interest in the
+software to the public domain. We make this dedication for the benefit
+of the public at large and to the detriment of our heirs and
+successors. We intend this dedication to be an overt act of
+relinquishment in perpetuity of all present and future rights to this
+software under copyright law.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+For more information, please refer to <http://unlicense.org>

README.md

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+# pkg2zip
+
+Utility that decrypts PlayStation Vita pkg file and creates zip package.
+
+Optionally embedds [NoNpDrm](https://github.com/TheOfficialFloW/NoNpDrm) license into work.bin file. You must provide license key.
+
+# Features
+
+* **portable**, written in cross-platform C code, runs on Windows, GNU/Linux, macOS (system dependent functionality is isolated in sys.c file).
+* **small**, uses zero dynamic memory allocations and has no external library dependencies.
+* **fast**, uses AESNI hardware accelerated AES decryption if supported by CPU (requires [AESNI](https://en.wikipedia.org/wiki/AES_instruction_set) and [SSSE3](https://en.wikipedia.org/wiki/SSSE3) instructions).
+* **simple**, creates zip package with same folder structure that Vita expects (just drag & drop all file from zip archive to ux0:). Zip file is created directly from pkg without any intermediate temporary files.
+
+Limitations:
+* currently works only for main application pkg files, no DLC.
+
+# Usage
+
+Execute `pkg2zip package.pkg` to create `title [id] [region].zip` file. Title, ID and region is automatically detected from pkg file.
+
+If you have license key (32 hex characters) you can execute `pkg2zip package.pkg hexkey` to embed key into work.bin file.
+
+# Download
+
+Get latest Windows binaries [here](https://github.com/mmozeiko/pkg2zip/releases).
+
+# Building
+
+Execute `make` if you are on GNU/Linux or macOS.
+
+On Windows you can build either with MinGW (get [MinGW-w64](http://www.msys2.org/)) or [Visual Studio 2017 Community Edition](https://www.visualstudio.com/vs/community/).
+* for MinGW make sure you have make installed, and then execute `mingw32-make`
+* for Visual Studio run `build.cmd`
+
+# Alternatives
+
+* https://github.com/RikuKH3/unpkg_vita
+* https://github.com/St4rk/PkgDecrypt
+* https://github.com/TheRadziu/PkgDecrypt
+
+# License
+
+This is free and unencumbered software released into the public domain.
+
+Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

build.cmd

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+@echo off
+
+call "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\Tools\VsDevCmd.bat" -arch=amd64 -host_arch=amd64
+
+set CL=/nologo /errorReport:none /Gm- /GF /GS- /MT /W4
+set LINK=/errorReport:none /INCREMENTAL:NO
+
+set CL=%CL% /Ox
+rem set CL=%CL% /Od /Zi
+rem set LINK=%LINK% /DEBUG
+
+cl.exe pkg2zip*.c /Fepkg2zip.exe

makefile

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+ifeq ($(OS),Windows_NT)
+  RM := del /q
+  EXE := .exe
+else
+  EXE :=
+endif
+
+BIN=pkg2zip${EXE}
+SRC=${wildcard pkg2zip*.c}
+OBJ=${SRC:.c=.o}
+DEP=${SRC:.c=.d}
+
+CFLAGS=-pipe -fvisibility=hidden -Wall -Wextra -DNDEBUG -O2
+LDFLAGS=-s
+
+.PHONY: all clean
+
+all: ${BIN}
+
+clean:
+	@${RM} ${BIN} ${OBJ} ${DEP}
+
+${BIN}: ${OBJ}
+	@echo [L] $@
+	@${CC} ${LDFLAGS} -o $@ $^
+
+%_x86.o: %_x86.c
+	@echo [C] $<
+	@${CC} ${CFLAGS} -maes -mssse3 -MMD -c -o $@ $<
+
+%.o: %.c
+	@echo [C] $<
+	@${CC} ${CFLAGS} -MMD -c -o $@ $<
+
+-include ${DEP}