Reverse Engineering for Beginners
CHAPTER 83. DEMOS CHAPTER 83. DEMOS 63 ; correct scale: 64 sar bx,6 ; BX=BX/64 65 add bx,dx ; BX=BX+start_X 66 ; now temp_X = te ...
CHAPTER 83. DEMOS CHAPTER 83. DEMOS Some other optimization tricks: The 1-byte CWD is used here for clearing DX instead of the ...
CHAPTER 83. DEMOS CHAPTER 83. DEMOS 53 loop MandelLoop 54 55 MandelBreak: 56 xchg ax,cx 57 stosb 58 cmp di, 0FA00h 59 jb FillLoo ...
Part IX Examples of reversing proprietary file formats ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION Chapter 84 Primitive XOR-encryption ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION 84.1 Norton Guide: simplest possible 1-byte XOR encryp ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION Since the 0x1A byte occurs so often, we can try to dec ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION Out[5]= 5.62724 In[6]:= Entropy[2, ExampleData[{"Text" ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION 84.2 Simplest possible 4-byte XOR encryption If a long ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION Here it is “encrypted” with a 4-byte key: Figure 84.4: ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION Here is the beginning of a PE-header in hexadecimal fo ...
CHAPTER 84. PRIMITIVE XOR-ENCRYPTION CHAPTER 84. PRIMITIVE XOR-ENCRYPTION Here it is “encrypted”: Figure 84.6:“Encrypted” PE-hea ...
CHAPTER 85. MILLENIUM GAME SAVE FILE CHAPTER 85. MILLENIUM GAME SAVE FILE Chapter 85 Millenium game save file The “Millenium Ret ...
CHAPTER 85. MILLENIUM GAME SAVE FILE CHAPTER 85. MILLENIUM GAME SAVE FILE So there is a mine in the game. Mines at some planets ...
CHAPTER 85. MILLENIUM GAME SAVE FILE CHAPTER 85. MILLENIUM GAME SAVE FILE ...> FC /b 2200save.i.v1 2200SAVE.I.V2 Comparing fi ...
CHAPTER 85. MILLENIUM GAME SAVE FILE CHAPTER 85. MILLENIUM GAME SAVE FILE Here is the new version of file opened in Hiew, we mar ...
CHAPTER 85. MILLENIUM GAME SAVE FILE CHAPTER 85. MILLENIUM GAME SAVE FILE Let’s check our assumptions. We will write the 1234 (0 ...
CHAPTER 85. MILLENIUM GAME SAVE FILE CHAPTER 85. MILLENIUM GAME SAVE FILE Now let’s try to finish the game as soon as possible, ...
CHAPTER 85. MILLENIUM GAME SAVE FILE CHAPTER 85. MILLENIUM GAME SAVE FILE Let’s skip some “days” in the game and oops! We have a ...
CHAPTER 86. ORACLE RDBMS: .SYM-FILES CHAPTER 86. ORACLE RDBMS: .SYM-FILES Chapter 86 Oracle RDBMS: .SYM-files When an Oracle RDB ...
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