TORN@DO presents: cRACKER's n0TES
Jump Instructions


JCC - Jump if Condition Is Met (taken from the CRC32 Tutorial #7)
77 cb		JA rel8			Jump short if above (CF=0 and ZF=0)
73 cb		JAE rel8		Jump short if above or equal (CF=0)
72 cb		JB rel8			Jump short if below (CF=1)
76 cb		JBE rel8		Jump short if below or equal (CF=1 or ZF=1)
72 cb		JC rel8			Jump short if carry (CF=1)
E3 cb		JCXZ rel8		Jump short if CX register is 0
E3 cb		JECXZ rel8		Jump short if ECX register 0
74 cb		JE rel8			Jump short if equal (ZF=1)
7F cb		JG rel8			Jump short if greater (ZF=0 and SF=OF)
7D cb		JGE rel8		Jump short if greater or equal (SF=0F)
7C cb		JL rel8			Jump short if less (SF<>OF)
7E cb		JLE rel8		Jump short if less or equal (ZF=1 or SF<>OF)
76 cb		JNA rel8		Jump short if not above (CF=1 or ZF=1)
72 cb		JNAE rel8		Jump short if not above or equal (CF=1)
73 cb		JNC rel8		Jump short if not carry (CF=0)
75 cb		JNE rel8		Jump short if not equal (ZF=0)
7E cb		JNG rel8		Jump short if not greater (ZF=1 or SF<>OF)
7C cb		JNGE rel8		Jump short if not greater or equal (SF<>OF)
7D cb		JNL rel8		Jump short if not less (SF=OF)
7F cb		JNLE rel8		Jump short if not less or equal (ZF=0 and SF=OF)
71 cb		JNO rel8		Jump short if not overflow (OF=1)
7B cb		JNP rel8		Jump short if not parity (PF=1)
79 cb		JNS rel8		Jump short if not sign (SF=0)
75 cb		JNZ rel8		Jump short if not zero (ZF=0)
70 cb		JO rel8			Jump short if overflow (OF=1)
7A cb		JP rel8			Jump short if parity (PF=1)
7A cb		JPE rel8		Jump short if parity even (PF=1)
7B cb		JPO rel8		Jump short if parity odd (PF=0)
78 cb		JS rel8			Jump short if sign (SF=1)
74 cb		JZ rel8			Jump short if zero (ZF=0)


0F 87 cw/cd	JA rel16/32		Jump near if above (CF=0 and ZF=0)
0F 83 cw/cd	JAE rel16/32		Jump near if above or equal (CF=0)
0F 82 cw/cd	JB rel16/32		Jump near if below (CF=1)
0F 86 cw/cd	JBE rel16/32		Jump near if below or equal (CF=1 or ZF=1)
0F 82 cw/cd	JC rel16/32		Jump near if carry (CF=1)
0F 84 cw/cd	JE rel16/32		Jump near if equal (ZF=1)
0F 84 cw/cd	JZ rel16/32		Jump near if 0 (ZF=1)
0F 8F cw/cd	JG rel16/32		Jump near if greater (ZF=0 and SF=OF)
0F 8D cw/cd	JGE rel16/32		Jump near if greater or equal (SF=OF)
0F 8C cw/cd	JL rel16/32		Jump near if less (SF<>OF)
0F 8E cw/cd	JLE rel16/32		Jump near if less or equal (ZF=1 or SF<>OF)
0F 86 cw/cd	JNA rel16/32		Jump near if not above (CF=1 or ZF=1)
0F 82 cw/cd	JNAE rel16/32		Jump near if not above or equal (CF=1)
0F 83 cw/cd	JNB rel16/32		Jump near if not below (CF=0)
0F 87 cw/cd	JNBE rel16/32		Jump near if not below or equal (CF=0 and ZF=0)
0F 83 cw/cd	JNC rel16/32		Jump near if not carry (CF=0)
0F 85 cw/cd	JNE rel16/32		Jump near if not equal (ZF=0)
0F 8E cw/cd	JNG rel16/32		Jump near if not greater (ZF=1 or SF<>OF)
0F 8C cw/cd	JNGE rel16/32		Jump near if not greater or equal (SF<>OF)
0F 8D cw/cd	JNL rel16/32		Jump near if not less (SF=OF)
0F 8F cw/cd	JNLE rel16/32		Jump near if not less or equal (ZF=0 and SF=OF)
0F 81 cw/cd	JNO rel16/32		Jump near if not overflow (OF=0)
0F 8B cw/cd	JNP rel16/32		Jump near if not parity (PF=0)
0F 89 cw/cd	JNS rel16/32		Jump near if not sign (SF=0)
0F 85 cw/cd	JNZ rel16/32		Jump near if not zero (ZF=0)
0F 80 cw/cd	JO rel16/32		Jump near if overflow (OF=1)
0F 8A cw/cd	JP rel16/32		Jump near if parity (PF=1)
0F 8A cw/cd	JPE rel16/32		Jump near if parity even (PF=1)
0F 8B cw/cd	JPO rel16/32		Jump near if parity odd (PF=0)
0F 88 cw/cd	JS rel16/32		Jump near if sign (SF=1)
0F 84 cw/cd	JZ rel16/32		Jump near if 0 (ZF=1)




JMP - Jump (taken from the CRC32 Tutorial #7)
EB cb		JMP rel8		Jump short, relative, displacement rel to next instruct
E9 cw		JMP rel16		Jump near, relative, displacement rel to next instruct
FF /4		JMP r/m16		Jump near, absolute indirect, address given in r/m16
FF /4		JMP r/m32		Jump near, absolute indirect, address given in r/m32
EA cb		JMP ptr16:16		Jump far, absolute, address given in operand
EA cb		JMP ptr16:32		Jump far, absolute, address given in operand
FF /5		JMP m16:16		Jump far, absolute indirect, address given in m16:16
FF /5		JMP m16:32		Jump far, absolute indirect, address given in m16:32
 




The cRACKER's n0tES are divided into 10 main parts:
 00. INDEX
 01. Assembly for Crackers (CoRN2)
 02. SoftICE (Boot Menu, Setup, Commands)
 03. Breakpoints & Win API Details
 04. Jump Instructions
 05. SET Instructions
 06. Tips & Tricks for Cracking
 07. Window Messages For Crackers
 08. Identifying Functions, Arguments, and Variables (Rhayader)
 09. Commerical Protection Systems
 10. Bitmanipulation (Cruehead)
 11. General Cracking Theory
 12. FAQ

 +A. How to contact me
 +B. What's New?



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