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VMBoxGen: minor refactoring

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CPunch
2022-10-08 18:32:33 -05:00
parent 5076e4c7b9
commit 7c4a5ddc8c
4 changed files with 36 additions and 24 deletions
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10
lib/include/core/lbox.h
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@@ -63,13 +63,15 @@ struct sLaikaB_box
# define LAIKA_BOX_SKID_END(ident) ((void)0) /* no-op */
#endif
/* clang-format off */
/* ======================================[[ Laika Boxes ]]====================================== */
/* BOX_SKID decodes null-terminated strings using a provided xor _key. aptly named lol */
#define LAIKA_BOX_SKID(_key) \
{ \
.unlockedData = {0}, /* reserved */ \
.code = { /* stack layout: \
.code = { /* stack layout: \
[0] - unlockedData (ptr) \
[1] - data (ptr) \
[2] - key (uint8_t) \
@@ -83,7 +85,7 @@ struct sLaikaB_box
LAIKA_MAKE_VM_IAB(OP_WRITE, 0, 3), /* write data to unlockedData */ \
LAIKA_MAKE_VM_IA(OP_INCPTR, 0), \
LAIKA_MAKE_VM_IA(OP_INCPTR, 1), \
LAIKA_MAKE_VM_IAB(OP_TESTJMP, 3, -17), /* exit loop on null terminator */ \
LAIKA_MAKE_VM_IAB(OP_TESTJMP, 3, -17), /* exit loop on null terminator */ \
OP_EXIT \
} \
}
@@ -99,7 +101,7 @@ LAIKA_FORCEINLINE void *laikaB_unlock(struct sLaikaB_box *box, void *data)
[LAIKA_BOX_SCRATCH_INDX] = LAIKA_MAKE_VM_PTR(box->scratch),
[LAIKA_BOX_DATA_INDX] = LAIKA_MAKE_VM_PTR(data),
},
.code = {0}, /* zero initalized */
.code = {0}, /* zero initalized */
.stack = {0}, /* zero initalized */
.pc = 0
};
@@ -116,6 +118,8 @@ LAIKA_FORCEINLINE void laikaB_lock(struct sLaikaB_box *box)
sodium_memzero(box->scratch, LAIKA_BOX_SCRATCH_SIZE);
}
/* clang-format on */
/* include KEY_* & DATA_* macros for each obfuscated string */
#include "lboxconfig.h"