Add Pixel 3a offsets and corrected firmware version.

Author: m-y-mo

SecurityExploits/Chrome/SandboxEscape/CVE-2021-30528/aarch64/README.md

@@ -1,8 +1,16 @@
 ## 64 bit version
 
-The 64 bit version 90.0.4430.91 of Chrome is tested with Samsung Galaxy A71 firmware version A715FXXU3BUB5.
+The 64 bit version 90.0.4430.91 of Chrome are tested with the following devices: 
+1. Pixel 3a firmware version RQ1A.210205.004
+2. Samsung Galaxy A71 firmware version A715FXXU3BUB5
 
-The offsets included in `arm64_renderer.patch` are with respect to this firmware. The `arm64_renderer.patch` is used to simulate a compromised renderer. 
+The offsets included in `arm64_renderer.patch` are with respect to A71. To test Pixel3a, change the A71 specific offsets to the following instead:
+```
+ uint64_t executeOffset = 0x711354;
+ uint64_t systemOffset = 0x5f278;
+```
+
+The `arm64_renderer.patch` is used to simulate a compromised renderer. 
 
 The patch `browser.patch` patches the browser to make local testing more convenient. It does the following:
 1. It removes the `ServerCards` check to simulate having a credit card store in an account (rather than on the device):

SecurityExploits/Chrome/SandboxEscape/CVE-2021-30528/arm/README.md

@@ -1,7 +1,7 @@
 ## 32 bit version
 
 The 32 bit version 88.0.4324.181 of Chrome are tested with the following devices: 
-1. Pixel 3a firmware version RP1A.200720.009
+1. Pixel 3a firmware version RQ1A.210205.004
 2. Samsung Galaxy A71 firmware version A715FXXU3BUB5
 
 The offsets included in `arm_renderer.patch` are with respect to these firmware. (To test on Pixel 3a, the offset for A71 needs to be commented out) The `arm_renderer.patch` is used to simulate a compromised renderer.