Topic created on: December 18, 2006 15:05 CST by doekia .

I am facing a VM. In VM opcode is implemented a SHA-1 hashing. I am targeting this code right now to decypher the VM opcode (the VM analyzer/interpreter is a beast).
Here below is the current challenge I am facing. If any of you have an idea what those opcode could be that might helps. I have spend so much time in this small section of code that I am going brain dead.

---8<-------8<------8<-------8<------8<-------8<------8<-------8<------8<-------8<---
hash_me+166  14 1E                          loadb   B, 1Eh
hash_me+168
hash_me+168                 rol30:                                       ; CODE XREF: hash_me+172j
hash_me+168  48                             one     _48_                 ; 48h and 08h are commonly found in return before test
hash_me+168                 ; ---------------------------------------------------------------------------
hash_me+169  C8                             db 0C8h ; +                  ; <-- x8h are usually 1byte opcode
hash_me+16A                 ; ---------------------------------------------------------------------------
hash_me+16A  D2 4F 01                       iif     _4FD2_, unk_6807A
hash_me+16D  08                             zero    _08_
hash_me+16D                 ; ---------------------------------------------------------------------------
hash_me+16E  C8             unk_6807A:      db 0C8h ; +                  ; CODE XREF: hash_me+16Aj
hash_me+16E                                                              ; <-- x8h are usually 1byte opcode
hash_me+16F  B2                             db 0B2h ; �
hash_me+170  61                             db  61h ; a
hash_me+171                 ; ---------------------------------------------------------------------------
hash_me+171  73                             dec     B
hash_me+172  E0 F4                          jr      NOT ZERO, rol30
hash_me+174  6E 08 02 0E                    loadl   dword_50E0208, A     ; C = B <<< 30