PS3Cobra Payload Reverse Engineering
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The Ps3Cobra implements syscall 8 and moves syscall 0 into the payload. It does some heavy patching on Lv2 code
Lv2 Patches of Cobra Payload 1.2
| offset | psgroove | cobra 1.2 | comment |
|---|---|---|---|
| 4F0A8 | bl sub_50B44 | bl sub_500250 | |
| 4FC2C | beq cr7, loc_4FC4C | nop | |
| 505D0 | li %r3, 1 | b sub_5008E0 | |
| 50B48 | patched | unpatched ? | |
| 572B8 | extsw %r3, %r31 | li %r3, 0 | |
| 5741C | bl sub_288568 | nop | |
| 1C00EC | stdu %sp, var_150(%sp) | b sub_5003A8 | |
| 1C26EC | stdu %sp, var_D0(%sp) | b sub_500448 | |
| 1CF8A8 | stdu %sp, var_B0(%sp) | b sub_5004C8 | |
| 25EC18 | bl sub_12934 | bl sub_500960 | |
| 271AF0 | stdu %sp, var_B0(%sp) | b loc_500808 | (syscall864) this is 1.2! |
| 273F80 | stdu %sp, var_B0(%sp) | b sub_500878 | (syscall867, |
| 29245C | stdu %sp, var_100(%sp) | b sub_5005A8 | |
| 292598 | ld %r11, stru_3403A0.base_addr_toc+8 | b sub_5006D8 | |
| 293A18 | ld %r9, stru_3403A0.base_addr_toc+8 | b sub_500540 | |
| 296550 | stdu %sp, var_D0(%sp) | b sub_500640 | (syscall606) |
| 296928 | stdu %sp, var_D0(%sp) | b sub_500770 | (syscall619) |
| 29BD48 | b sub_11850 | b sub_500358 | |
| 2AAFC8 | b sub_50B48 | b sub_5002F0 |
feel free to append and/or revise :)