Reverse Engineering for Beginners
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS 18.1.3 MIPS. The function uses a lot of S- registers which must be preserved, so that’s wh ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS addiu $sp, 0x80 $LC0: .ascii "a[%d]=%d\n" # DATA XREF: main+44 Something interesting: ther ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS add esp, 8 xor eax, eax mov esp, ebp pop ebp ret 0 _main ENDP _TEXT ENDS END The code prod ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS Let’s try to find out where did this value come from, using OllyDbg. Let’s load and find t ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS Let’s trace further and see how it gets restored: Figure 18.4:OllyDbg: restoring value of ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS Listing 18.6: Non-optimizing MSVC 2008 _TEXT SEGMENT _i$ = -84 ; size = 4 _a$ = -80 ; size ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS Let’s load it into OllyDbg, and trace until all 30 elements are written: Figure 18.5:OllyD ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS Trace until the function end: Figure 18.6:OllyDbg: EIP was restored, but OllyDbg can’t dis ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS Welcome! It is called abuffer overflow^4. Replace theintarray with a string (chararray), c ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS 18.3 Buffer overflow protection methods. There are several methods to protect against this ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS mov ebx, DWORD PTR [ebp-4] leave ret .L5: call __stack_chk_fail The random value is locate ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS var_3C = -0x3C var_38 = -0x38 var_34 = -0x34 var_30 = -0x30 var_2C = -0x2C var_28 = -0x28 ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS ; second loop begin loc_2F14 ADDS R0, R5, #1 LDR.W R2, [R6,R5,LSL#2] MOV R5, R0 loc_2F1C M ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS "June", "July", "August", "September", "October", "November", "December" }; // in 0..11 ra ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS And that’s why to pick a specific element,month∗ 8 bytes has to be skipped from the start. ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS DCD ||.conststring||+0x32 DCD ||.conststring||+0x3c DCD ||.conststring||+0x44 DCD ||.const ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS .string "November" .LC13: .string "December" The address of the table is loaded in X1 usin ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS dq offset aMarch_1 ; "March" dq offset aApril_1 ; "April" dq offset aMay_1 ; "May" dq offs ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS Listing 18.18: Optimizing MSVC 2013 x64 $SG3143 DB 'm', 00H, 'o', 00H, 'n', 00H, 't', 00H, ...
CHAPTER 18. ARRAYS CHAPTER 18. ARRAYS 18.6 Multidimensional arrays Internally, a multidimensional array is essentially the same ...
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